Thanks Joel! All of my content plus about 30 new videos (350 in all) have been moved to my website. You can subscribe here www.scannerdanner.com/join-scannerdanner-premium.html Thank you and I hope to hear from you in the comments section of the videos.
That's a good find. I've got thirteen years with Mercedes and am currently a master certified team lead. That's the first time I've seen corrosion at that interior box. When I first saw the complaint I figured for a blown circuit 87 fuse. Well done, will be looking into more of your videos.
The other 340+ videos on this channel have been moved here www.scannerdanner.com/join-scannerdanner-premium.html My free channel (ScannerDanner) has almost 400. Thanks for comment and hope to hear from you more.
Morrisey wrote a Smiths song about this same scenario... Idle speed relay on his 85 500 sel actin up. Shop told him "These things take time" hence the song!
This video was quite useful for my issue. I had a crank no start with electric cooling fan on full on a 1999 CLK320. I also had no comms with a scan tool. I fully charged the battery. No change. Checked every fuse. No change. I swapped the K40 relay block with a known good one. No change. I then bought a scrap yard ECU for £20 which wouldn't start the car but did communicate with the scan tool. I then swapped the MCU from my bad ECU into the replacement ECU and I was back in business. Which is just as well because now my 1998 E55 has coolant in the oil. So that's really serious and not getting used until that's diagnosed and resolved! Blokes like you put real value into RUclips, so thanks very much!
I was screaming at you for five minutes while you were tearing that cowl apart to check the fuse connection. its very rare for me to get ahead of you on a diag. I recently did a chevy van no comm with the airbag module. same exact issue. I'm a college graduate with a 2 year degree in automotive technology and I wish I had a teacher like you ten years ago. your procedures have saved me so much time in the field. its nice to see someone get as excited as I do about diagnostics. thanks paul your a great inspiration.
I do the same not scream but say hey look here! LOL Then I have to watch to see f that is where it is.. And if wrong I am glad no one could hear me! LOL
Thank you more than I express. I was working on clients car and accidentally grounded out on valve cover while back probing. I had the ESP AND FAN symptoms and thought I fried the computer. Rechecking the feed fuse #43 I found it was popped. I knew I already checked this but retraced my steps on your wiring diagram and found it. Tears of joy brother! Thanks so much for helping a side hustling technician.
Hey Dan, keep in mind that ALL Mercedes-Benz hoods can lift into service mode (12 o'clock position). There is a red buttom one side that you press in while lifting and go to the other side and press that tab in and it should allow you to lift it thus rendering the hood lights obsolete.
Genius resistance = heat. I've seen so many corroded melted fuses. THANK YOU. Also the car has/had an air-tronic suspension. The bellows corrode and fail leading to air bag failures and some owners opt to buy the cheaper struts to save money. Thank you. Great video.
There was website with an up close inspection of the Space Shuttle wiring. There were tons of chafe and arc spots. I used to work on airplanes and we had lots of wires break from work harden/vibration.
Thanks for all your videos!!!! I'm a 68 year old shade tree Maniac that has never had a vehicle in a shop but, don't know what I need to about the new stuff. I don't work on cars for a living, just for family and friends. Wish I had every video you have made (except for the x rated ones) or could take your courses. Don't know how much longer I will be able to work on vehicles anyway but I sure do love it !!!!
Sir I'm 74 and I do the same with family and friends and I bought his book and his premium and it sure has helped me G B to all that others while we can😊
@38:57 and THAT is one of the reasons why I always physically pull out any fuse I wanna check. Years ago, I went to GM training course where they simulated several problems on different vehicles, and one of the things they did on one of the vehicles was break off one of the spades on a fuse, stuffed the broken spade in the outlet side of the fuse block, meaning the wire that was going from the fuse block to whatever it was the fuse was supposed to power, then plugged the fuse that they broke the spade off of into the other spade hole for that fuse location. I forget what the symptom(s) were, but the cause they were trying to simulate was a bad fuse block. It took everybody else who worked on that car 30-45 minutes to figure out what the problem was, I found out what the trainers really did to it in less than 5 by physically pulling the fuse.
U R the man I was quoted $8k to repair. I was informed its electrical issues that may cost more depending rime of labor. TRULY A SAVIOR. THANKS BROTHA. MR.FIELDS GO HAWKS
Now that was awesome troubleshooting utilizing ECM's 5v REF, power and grounds, and sheer determination to find the culprit. Your methods are proven!!!
Just bought a E500. One mention in my research in it was sunroof drains plug up and water leaks down through A pilar. Have watched your vids before and found them to be SOLID strategy based diagnostics. This is my 1st Benz and intimidates me a bit, but you just proved (again) it's about basic fundamentals regardless of make. Thank you sir!
Exactly! Fundamentals is key. Just had another comment here telling me to stop referencing other car models while I'm troubleshooting. That makes no sense to me. If you know your fundamentals, how can you not reference other cars.
Another absolutely fantastic video! I can only imagine the work you put into editing these complex scenes, and everything flows flawlessly! As for the Benz, no match for some well applied voltage drop testing and knowledge of fundamentals. You continue to be an inspiration to us all Paul!
You are awesome sir. I was your paying student on your premium channel then i stopped. But i am coming back to you again. I have never come across teacher like you. You absolutely brilliant.
Would love to visit the class some day , have always been fascinated with wiring diagnostics . Rather watch this than go to a movie ! Thank you so ! much !
OMG what happy i am with my Audi A4 from 1999 with no electronic crap like almost every new car , it stil run with 501.000 km on the clock ! Nice video !
If he serviced more Benz/ BMW Products - He would probably become a serial killer. Too much German over engineering and over simplification. Even down to brake and rotor service. Cant just do pads. They screw you with that too.
Hi there, if you enjoy German car issues and complicated problems now common with most German cars check out DIAGNOSE DAN channel, he is in the Netherlands and fixes problems that dealerships best mechanics cant fix and almost makes it look easy. Take a look at his no start BMW which ended up being a shorted door handle because it had that easy entry feature/nonsense which shut down the entire car
Just in time. After replacing the o2 sensor and not seeing improvement I disconnected the MAF on my '89 Ranger 2.3 and turned ignition on off on off then started engine and it runs really good. Replacing MAF tomorrow. This after a week of troubleshooting. Thanks ScannerDanner.
Also, the moisture intrusion could have come from the sunroof drains. If the car has a sunroof, the drain tubes on Mercedes and BMW clog and can and often do dump water out of the tubes and down behind the A pillar covers. The water usually goes behind the edges of the dash and into the carpets and can get into the fuse boxes....And that fuse box is right below the path of the sunroof drain tube if equipped.....
As I'm typing this, 106 comments only 95 thumbs up. Sometimes I get the RUclips email for a new scannerdanner vid and just get excited and hit play and watch only to realize after its over I'm not "signed in" to accept my thumbs up. I try really hard to wait till I get home and signed in cause I'm just not that phone literate. As always thank you very much for knowledge and effort
Experience of semi truck driver , never trust at first look it is not always what it looks like. . . We have more vibration, corrosion , corroded wires. Always check back side of fuse or signal tracer I like your honesty and knowledge
From now on, every time my Merc throws a code, I'm going to call it a Fart Code! Great video on finding bad wires and fuses in insane modern wiring harnesses!
Youre easily the best mechanic I've witnessed in action. No ASE cert but my father taught master techs and I've been rebuilding cars my whole life. Dan, I appreciate you filming your course materials. You saved my Mercedes cls 55 amg rebuild. Along with several ac issues and injector issues on a CTSV. Keep up the good work.
Lol, Danner goes on a rant about how it's not the fuse, then proceeds to diagnose a bad fuse. Great video for sure. I had a Ford van recently with a similar issue. Turned out to be the fuse box. Never would've found it without videos like yours. I love learning about this stuff.
Wow.That was AWESOME! As a Mercedes tech i reaaaally enjoyed watchin this video..and as a car nerd i liked it even more. ive neeever seen moisture in that cabin fuse box before ..after working at the Mercedes dealership for 7 years.....really weird.Had a similar "faultfinding" on my own 1992 mod w124 500e on my channel here...,No power from "Base module"...TO the ECU...wiring break in a Z/Soldering point.This video of yours is just another good example,that shows proper faultfinding....and how that saves you from spending thousands of dollars... throwing parts at a "problem,and risking not ever to fix the problem,only throwing money and time out of the window."( what usually happens when doing "online faultfinding looking on forums and "asking for help").Well..enough babble here...you are very much welcome to check out my humble low key "channel if you want to,even though it isnt straight up faultfinding all the time.Anyways...Thank you so much for lovely channel.Greetings from Norway , Stefan :)
Again - watched this finding the expected unexpected/known unknown. My not be the cuprit in mine, but I have found that if there is a particular problem in a particular make and model - that it will likely be found in others with same make and model. Owned, serviced, flipped and troubleshot many VW & AUDI as well as GM make..you get to know exactly where to start looking before probing into more complex. Looks like simply pulling that fuse module and electrical cleaner + all new fuses would be prudent.
I remember during the late 70's and 80's, just about every Mercedes I'd pull up to had the tail lights full of water. My buddy upgraded every few years with another used car. We looked at a ton of them and many had leaky trunks and rotten trunk floors.
Found your channel after one of these died running in front of the house and the pushed it into my front lawn... wish i would looked before the tow truck tore up my lawn
Hi. Just seen you for the first time. Picked up a 2011 W204 C250. I’m an industrial electrician/electronic fault finder. Many different way to go around the fault. So well done. I would cut and spade lugged those bad fuses. Stick a temporary new fuse. Just to overcome voltage drop. No harm no foul. Lol. Regards KevinM
Dear thank you for your time and effort I had the same issue with my 2003 e240 and it was the same problem that you did and the problem was with the fuse box itself 😒😒😒😒 I spent 1 hour searching for the problem and I found this stupid fuse. Thank you man. Big thanks from UAE
Well done ! When you start working on a car, make sure that energy is allways available. Electricity and gas. Then check all the electric contacts. Pull fuses and relais. Very often, if not allways, you find the trouble maker. If Dan had checked his fuses better then problem would have been solved much quicker. But we are brainwashed by the OBD scanner manufacturers.
I have 2 signal generators and dont even understand how to use it. Im so ahamed to say this cuz i have fixed a myriad of stuff. I have a snap on one and the harbor freight tool one. As I use it I dont beliew what I am doing. Pffff.
@@CBRRR-eh3ky Its just a matter of hooking it up properly and not blowing up the signal generator. I mimic a stock signal "arbitrary waveform" and watch for the changes in the ECU. I made a protection circuit that is a fet and transistor combo so I dont drive the circuit with the signal generator directly and damage it.
How important it is to check your basics as you did. I could imagine the changed parts list by a individual if they didn't do their basics: Entire key mechanism to the pcm. Perfect example you showed by checking power source with this case study. My inspiring instructor always says "Don't Be a Parts Changer" 😀. Thank you brother Paul 🙏.
I'm always amazed at how people pay 70 or $80,000 for a car or more and then treat it like crap. Look at how filthy that car is! No wonder there's an air freshener attached to the vent.
For those who can spare $70-$80k on a car don't really care about how rough they treat their car. At the end of the day, to those people, time is money.
This is a great great video Paul! You are not afraid of tackling an unfamiliar car and most importantly,you do not bitch and moan about “ how complicated and unnecessary European cars are “,like I’ve seen many others do on RUclips! You just follow the basics and fix the car! That’s what makes you the best of the best! I’ll be definitely joining your premium channel on your website now that all your videos are moved there!
Very good content Paul, I work a lot on Benz and it is very common issue the corroded terminals and modules, no idea what is the root cause, maybe materials are incompatible. I support your channel because you earned, you teach us new and old techniques, that is invaluable! I can thank you enough, you made me a better tech and all is here and in your free channel. I wish you and your family the best. God bless you my friend.
And you've been here a long time!. It does get to a point were you guys will be passing me up but I appreciate your sticking around more than you know.
ESP = Electric Stability Program / Mercedes name for the electronic stability control / traction control. Damn rotten fuses, can get you in trouble every time. :-)
Awesome Paul, like the way you approached this problem. CPU no communication, check power feeds to the CPU, found a low input, jumped it to 12 volts with enough amperage. Then everything woke up 🙂 Awesome. That's $$$$ in the Bank !!!
Man that was allot of fun! Love those Benz fuze boxes. ML's have issues with water dripping onto the rear SAMs and rear box. One time, I pulled 85 dtc's from a ML350. This kind of problem solving is always rewarding when you get it figured out! Good job man, your an animal!
Nice job!!!! That car is dejavu for me, my brother's neighbor bought one off Craigslist and spent way too much, as soon as he got home CEL pops on. Brings it to me, there is an EGR Flow and a ETC Code. Another shop had already cleaned the EGR and pipe out code came back. That pressure sensor that you tested in the video is the MAP Sensor. On mine the hose coming off of it was corroded and scan data was fixed at 20 in hg fixed it and it took care of the EGR Code. Learned that from you! Throttle was clean and wires looked good changed the ETC Assembly and took care of that code.
talking about corrosion you had that stupid cologne bottle hanging right over the air vent. Good chance it leaked at some point dripping fluid running along the wires down onto the back of the fuse box. That's my theory.
Almost impossible to Stop. The rain run off from the outside windshield drain, use a straight clothes hanger and stick it down the drain screen slot you should be able to see the hanger go all the way to the ground take a look under the car to make sure the hanger went all the way through to the ground to clean out leafs and dirt or water will come into the car on the floor boards and wet the fuses, two drains to clean out with a straight clothes hanger. Mercedes Benz was already been sued and loss the class action for such a poor design in a $100,000 car for water into the fuse boxes in and out.
learning so much Brother you've been a great help. I'm an ex Generator technician due to my troubleshooting background. I'm able to solve a lot of these problems with your information in channel. I would not be able to solve as many. thank you very much for your help. Starting over in my life as a mechanic due to an unfortunate divorce is me my life. Your easy watching channel has helped the transition enjoyable and profitable. Thanks again bro.
Thanks for the detailed information. However my 2003 E500's issue was water entering into the ECU. I stumbled upon a flood yesterday. ECU replaced everyone is happy 😊
i hate to tell you but! with dan sullivans loadpro you would have seen the voltage drop at/to the fuse. The test you did with the volt meter and the test light to cause the voltage drop is essentially how the loadpro works and gives you a readout on the actuarl drop in voltage on the multimeter. My 300$ flashlight also paid off, i think it now only cost 150 $nz my phillips penlight premium . Top video like always.
I'm not so sure about that, because the corroded pin was on the load side not the feed side of the fuse. The drop would have shown just on the other side. my test light woukd have shown it if it was the feed coming into the fuse, in fact my voltmeter would have even shown it with the computer still plugged in as the load. Make sense?
I bought that load pro few years ago and the first and only time I used it was on a no start cavalier in walmart parking lot. It was the same problem as this car with A corroded fuse for the fuel pump. Soon as I touched the fuse with the load pro I heard the fuel pump turn on. I am confident I would have found the problem just as fast with my test light. Save your money.. Great video Paul
The loadpro is a time saver lets say, "the wire was corroded in the firewall to the fuse box" . You would definetly proof with the volt meter and pressing the loadpro button that the feed was good to the fuse holder and that the problem would have to be from there onwards for that particular circuit. The loadpro is a time saver that is ALL its not a competitor to a test light . 30 minute 50 secounds is exactly what i think the loadpro is doing and you dont have to rig up the testlight and the multimeter. Plus a test light lightbulb resistance changes as the bulb gets hot the loadpro has a fixed Load applyed . Well thats what i think is how it works i never seen sullivans patent.
no you wouldn't have. the meter clearly showed to voltage drop. if you like that load pro so much you should go watch the review of it on pine hollow auto diagnostics. I'm sure ivan will convince you its nothing special and a test light is all you really need.
really a load pro? does this guy pay attention to any of your content? its sad he is paying ten dollars a month and not comprehending anything your teaching us.
So interesting Mr danner. Certainly,I never see a good electrician like you. You are alone all over the world 🌎 with regards to the work.i real appreciate. And we'll surely follow you till dikindome come.
1. you don’t use a snap-on scanner on a Mercedes-Benz- It is absolutely useless. 2. If you were to read codes from the gateway (EIS module) you’ll probably see a factory fault code indicating which terminal is lacking power.
I'm not a mechanic but I work on my Mercedes cars as a hobby so any vid's with a Mercedes + ScannerDanner I'm watching... Also on Mercedes if the car won't go out of Park the reason is a dead battery.
To tell the truth, Mr. Kilmer has some kind of a point. It is depressing that products today have planned obsolescence in them. If you want to have say a smartphone that is up to date you will have to put up with the fact that they are not easy to repair. None of them. The battery is not user-replaceable and they will become sluggish with a software update because of a "new battery saving feature" that is "incompatible" with older models. The point is that **every** major cell phone manufacturer is doing this even with the most expensive models. The same can be said about cars though it is comforting that a Mercedes isn't too impossible to work with after all. Combine that with talented Chinese engineers that develop good tools that can hack into the OBD-II diagnostics interface for a mere fraction of the price of that tool he is using in the clip. Honestly, I don't feel that what the Volkswagen did with the diesel emissions is so bad. The smartphone manufacturers engage in much dirtier practices.
Man brother i have been dealing with my mercedes benz e320 exactly like that one i had the same exact issue i changed my whole ignition a few months ago but still have very little to no communication when i plug my scan tool now you just pointed me in the right direction thank you so much for making this video. Great video and amazing detailed explanation
No cloning we only live once Make the best of it love like u live live like you love ......you welcome Dan its ur work that has brought you this far ..you do good work people come bk to you
My teacher thanx from the west side of the world i really appreciate your efforts man , car doctor clear points , direct diagnosis without more philosophy thanx for inspiring me ❤
aviomaster alot of other cars have just as much. My GM trucks all have over 250k minor idiot lights etc. German cars horrible. They lost ww2 and seek revenge on us selling this overrated junk. Keeps our shop busy .
No substitute for real world experience. New techs within their first 3 years don't tackle jobs like this without a mentor!!! Guidance and persistency!!
Holly crap, that fan does sounds like the jet. What a great find. You got there by understanding circuit design and even that you were surprised a bit by the corrosion, the video was excellent because we were surprised with you. But the commentary kept us on track and it helped me visualize voltage drop. Thanks so much for letting us hang out in the class room/shop.
Great Danner nice diagnose, for a mechanic this could be a expensive one with a lot of parts ............ a new diagnostic to remember check the fuse if fuse is ok pull the fuse check for corrosion. The older types of fuses with aluminium on the fuse and copper on the fuse box did get corroded without water and could give a lot of problem but you only rolled the fuses and problem disappeared then you change to new fuses. Later learned that if you bought fuses with copper no more oxidation best to have same kind of metal and not mix.. But this case was moisture. Thanks for your time Danner
Mr danner ... it’s great to watch this, it’s like watching an artists paint the picture and as you watch it comes together ...... patience is the key and there’s about 70% of techs who think they know and talk the talk but still get caught out , I’ve personally seen techs going straight for the one of fix and finding out it’s a broken wire , keep up the good work
Yes, yes, yes!!! I'm a 10 yr ASE Cert Master Teck, and this is my life, "Im not going to do that" but I always do, nothings easy!!! I've memorized countless diagrams, only to find cure where I started! It's become habit to literally pull every fuse and inspect when. Concern is electrical intermittents and closed circuit B+ and ref signals issues. Auto Electric is good brain exercise that is required to enable the mind to think outside the box in this field.
Thank you mr ScannerDanner. Your patience paid off. I've already watched an another video where you were visiting at the ericthecarguy's place discussing about the OBD task with him. Greetings from Helsinki Finland.
We come across water ingress quite often on Rover 75 and MG ZT's which is what we specialise in. My advice while dealing with any unprotected plugs (ie not weather proofed) while they are unplugged simply pack the plugs & sockets with clear grease or battery terminal grease or even red rubber grease . At least if you don't trace the source of the leak at least if water does hit the plugs or fuse boxes etc it's not going to cause further corrosion due to the grease acting as a fantastic water repellent. We've used this practice for years and no problems will arise with interference or cross conductance or voltage leakage etc. In fact if the factories greased every plug and socket and fuse blade there would hardly be any faults but hey they don't want their cars to last forever do they ?!!! Nice video and clever superimposing effects through your scope screen :)
Oh Yeh the bad fuse has bitten me too! I dont know what it is about Mercedes of this era, many of them suffer from corroded fuses I've seen it on multiple occasions - I think they often get condensation issues in the cabin and thus the crusty fuse box. On older 90's models I've even seen the wood trim fall off due to damp. great vid as usual......
Hey Scanner Danner, Love watching your show, you are indeed an Guru & Master at what you Do! I Have an 2003 Mercedes, no crank, no start, but the starter engages, diagnosed no fuel pressure, have already verified fuses & relay works, my pressure sensor is integrated into the fuel pump itself, so I'm ordering another pump that's where I'm at, Keep up the good work!
I do believe they are engineered to fail. I guess it keeps the riff raff from owning them and keeps them the toys of the richest even when they are old you will need to Chuck money at it to keep it alive. It’s a shame, because they are beautifully engineered and finished cars - can’t believe they do this to their own creations; no pride, all about profit
"Dr" Feyi (of LTI fame!) here... ...Checking fuses, Mr Danner, is just that...CHECKING FUSES! I am actually notorious for setting bugs that technical tests would miss but visual ones would find. Not to worry though, I have been stumped at my day job chasing similar v.drop issues and regret not having the time to go back and video the problem and its final resolution. That said, kudos Sir. I plan on making a Northern run and hopefully make detours to see you Ivan, Eric and Keith... ...when it warms up (of course!!!) Until then, cheers! -100
I like how u try to be so patient because a lot of times when I'm messing with the electrical part of the vehicles it gets on my nerves. THANKS FOR THIS VIDEO UR DOING A GREAT JOB.👍
New to the channel, this video brings me back to a car we had in the shop at my old job (s500 with the same engine as this) which randomly broke into misfiring and some times no start when it warmed up, it had already got an ecu fitted a few years earlier, looking at the way the car in this video is behaving I’d almost put money on it having the same issue......!
So glad you tore into that to find the damage. At first I was thinking that it got wet with the window stuck down, but then realized that the window was the effect, not the cause. Another great video. Thank you!
Dude: here it is July 2020 and I am seeing this for the first time. Impressive. I know M-B. Thumbs up from Death Valley, CA. where we keep a stable of S-Klasse cars operational.
THANK YOU SO MUCH FOR THIS VIDEO! I'm having the exact same problem with my 2013 C 250! The engine misfired due to failed spark plugs and a broken head gasket. I went ahead and fixed that, but there is a separate issue with my car not starting and not connecting to the ECU. My cooling fan also blows at full speed with the car off. If I open the doors, the hood, or the trunk, it triggers the fan even if the ignition isn't going. I have to unplug the main relay for it to stop. A friend of mine who works on European cars said he couldn't find a short, and that it's probably my ECM that's fried, but he didn't do the 5v reference. He just tried to get into the ECU with the OBD reader and failed. He could communicate with all the other modules, but not the engine or transmission. From watching this video, I'm starting to think that I also have a short somewhere. It was termite season here in the south, so I wouldn't be surprised if they got into my engine and chewed some wires. Also, lizards seem to enjoy my car, so I wouldn't be surprised if one of them got to the wiring somehow.
Excellent video. A prime example of "focus on the main problem" and fix it first. No start? F-16 cooling fan? Fix that! The other stuff you can knock out as the customer wishes. You probably have won their trust by then since the thing starts and runs now. Nice to see you working more Euros. The fuse box on that Mercedes is called a SAM (signal acquisition module). It "intelligently" monitors many circuits, and if there is a problem, will shut the circuit down. Not the case here, but sometimes you may find a circuit which comes and goes, and what you have is the SAM triggering. Also most Benz have two hood positions. A check position, and a service position. On the inside of the hood hinges you will see these spring loaded tabs you can depress them which will allow the hood to go completely vertical. Your back will be happy 😉👌🏽🙃
In addition to learning the ins and outs of troubleshooting modern vehicles from your channel, I'm also learning about myself! I could see the exact moment I'd have lost my patience, and ran a wire. There's no RUclips vid in the world that will help me with that problem - gotta do that one on my own, lol. PATIENCE!! I need it BADLY! Especially with modern cars. Excellent vid, as always. I think you're helping us just as much as we (collectively) are helping you - it's an extremely rewarding circle of GOOD, any way you slice it. :) You got a subscriber for LIFE here!
Mr.Danner. I amazed what you did and how you fix the issue, i was excited all the time watching you digging hard to find the problem i wish i am young to be my tech teacher. i wish for your the best.
You Rock Man .... I have just this problem with my MERC ML 270 and I will go at this just as you have shown but straight to the fuse and contact aspect! thank you !! Greetings from LATVIA !
Your the man, I just worked on a E350 that had the same exact problem. Without your guidance, I’m not sure if I would of fixed it as soon as I did. Definitely going to watch your course. Great instructor!!!!!
I know I am preaching to choir. But that was excellent. Crazy Ya vool cars, but the basics r so important. The load of the test light, the voltmeter numbers, the tenacity of the (not so) old hound. Love the learning experience. Going to try the website a bit. I also like that quick picture u took. Probably to send to the owner to give him a visual. Bought an old Vantage on eBay. All the good channels have driven the price up on those bad boys. We will c if it works when it gets here in no rain no rust So Cal
S.Danner: You RULE! I watch your "Sensor grounds & 5v reference" "Hall effect...Pull up...pull down..." videos just to relax! Thanks bro, you got it goin' on. btw Later Benzs' cooling fan is energized when the A/C compressor circuit is energized - even on cold start. Hit the IO button to remove it from operation (center console lower right button) or shut the climate system off completely (lower center IO button.) **It WILL START automatically but not "always on." Paul
I really need to buy that diagnostic course of yours Mr. Danner.
Thanks Joel! All of my content plus about 30 new videos (350 in all) have been moved to my website. You can subscribe here
www.scannerdanner.com/join-scannerdanner-premium.html
Thank you and I hope to hear from you in the comments section of the videos.
I like it thanks Mr. Danner I hope you make more vedio 🤝🤝🤝👏👏👏
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@@amgbenz7544 n
@@ScannerDannerPremiumThank you brothers,your are very good education 🧐🥳happy new year 2021
That's a good find. I've got thirteen years with Mercedes and am currently a master certified team lead. That's the first time I've seen corrosion at that interior box. When I first saw the complaint I figured for a blown circuit 87 fuse. Well done, will be looking into more of your videos.
The other 340+ videos on this channel have been moved here www.scannerdanner.com/join-scannerdanner-premium.html
My free channel (ScannerDanner) has almost 400. Thanks for comment and hope to hear from you more.
Morrisey wrote a Smiths song about this same scenario... Idle speed relay on his 85 500 sel actin up. Shop told him "These things take time" hence the song!
This video was quite useful for my issue. I had a crank no start with electric cooling fan on full on a 1999 CLK320. I also had no comms with a scan tool. I fully charged the battery. No change. Checked every fuse. No change. I swapped the K40 relay block with a known good one. No change. I then bought a scrap yard ECU for £20 which wouldn't start the car but did communicate with the scan tool. I then swapped the MCU from my bad ECU into the replacement ECU and I was back in business. Which is just as well because now my 1998 E55 has coolant in the oil. So that's really serious and not getting used until that's diagnosed and resolved! Blokes like you put real value into RUclips, so thanks very much!
I was screaming at you for five minutes while you were tearing that cowl apart to check the fuse connection. its very rare for me to get ahead of you on a diag. I recently did a chevy van no comm with the airbag module. same exact issue. I'm a college graduate with a 2 year degree in automotive technology and I wish I had a teacher like you ten years ago. your procedures have saved me so much time in the field. its nice to see someone get as excited as I do about diagnostics. thanks paul your a great inspiration.
I do the same not scream but say hey look here! LOL Then I have to watch to see f that is where it is.. And if wrong I am glad no one could hear me! LOL
Thank you more than I express. I was working on clients car and accidentally grounded out on valve cover while back probing. I had the ESP AND FAN symptoms and thought I fried the computer. Rechecking the feed fuse #43 I found it was popped. I knew I already checked this but retraced my steps on your wiring diagram and found it. Tears of joy brother! Thanks so much for helping a side hustling technician.
Hey Dan, keep in mind that ALL Mercedes-Benz hoods can lift into service mode (12 o'clock position). There is a red buttom one side that you press in while lifting and go to the other side and press that tab in and it should allow you to lift it thus rendering the hood lights obsolete.
That's what I said...lol
@@leannablakely1043 A woman that knows that detail!?!?! That's hot.
Genius resistance = heat. I've seen so many corroded melted fuses. THANK YOU.
Also the car has/had an air-tronic suspension. The bellows corrode and fail leading to air bag failures and some owners opt to buy the cheaper struts to save money.
Thank you. Great video.
It has always fascinated me how a single small circuit can render a thing that weighs thousands of pounds useless, that's why i love this profession
There was website with an up close inspection of the Space Shuttle wiring. There were tons of chafe and arc spots. I used to work on airplanes and we had lots of wires break from work harden/vibration.
Thanks for all your videos!!!! I'm a 68 year old shade tree Maniac that has never had a vehicle in a shop but, don't know what I need to about the new stuff. I don't work on cars for a living, just for family and friends. Wish I had every video you have made (except for the x rated ones) or could take your courses. Don't know how much longer I will be able to work on vehicles anyway but I sure do love it !!!!
Sir I'm 74 and I do the same with family and friends and I bought his book and his premium and it sure has helped me G B to all that others while we can😊
@38:57 and THAT is one of the reasons why I always physically pull out any fuse I wanna check. Years ago, I went to GM training course where they simulated several problems on different vehicles, and one of the things they did on one of the vehicles was break off one of the spades on a fuse, stuffed the broken spade in the outlet side of the fuse block, meaning the wire that was going from the fuse block to whatever it was the fuse was supposed to power, then plugged the fuse that they broke the spade off of into the other spade hole for that fuse location. I forget what the symptom(s) were, but the cause they were trying to simulate was a bad fuse block. It took everybody else who worked on that car 30-45 minutes to figure out what the problem was, I found out what the trainers really did to it in less than 5 by physically pulling the fuse.
U R the man I was quoted $8k to repair. I was informed its electrical issues that may cost more depending rime of labor. TRULY A SAVIOR. THANKS BROTHA.
MR.FIELDS
GO HAWKS
Now that was awesome troubleshooting utilizing ECM's 5v REF, power and grounds, and sheer determination to find the culprit. Your methods are proven!!!
Just bought a E500. One mention in my research in it was sunroof drains plug up and water leaks down through A pilar. Have watched your vids before and found them to be SOLID strategy based diagnostics. This is my 1st Benz and intimidates me a bit, but you just proved (again) it's about basic fundamentals regardless of make. Thank you sir!
Exactly! Fundamentals is key. Just had another comment here telling me to stop referencing other car models while I'm troubleshooting. That makes no sense to me. If you know your fundamentals, how can you not reference other cars.
Another absolutely fantastic video! I can only imagine the work you put into editing these complex scenes, and everything flows flawlessly! As for the Benz, no match for some well applied voltage drop testing and knowledge of fundamentals. You continue to be an inspiration to us all Paul!
You are awesome sir. I was your paying student on your premium channel then i stopped. But i am coming back to you again. I have never come across teacher like you. You absolutely brilliant.
Thank you!
www.scannerdanner.com/join-scannerdanner-premium.html
Would love to visit the class some day , have always been fascinated with wiring diagnostics . Rather watch this than go to a movie ! Thank you so ! much !
OMG what happy i am with my Audi A4 from 1999 with no electronic crap like almost every new car , it stil run with 501.000 km on the clock ! Nice video !
I wish you did more Mercedes and BMW... Perfect as always.
I have some more here www.scannerdanner.com/join-scannerdanner-premium.html Thanks!
If he serviced more Benz/
BMW Products - He would probably become a serial killer.
Too much German over engineering and over simplification. Even down to brake and rotor service. Cant just do pads. They screw you with that too.
@@1keykneedeep it's engineered to fall apart quickly 😂
just look for the water, and you'll find your problem on any eurotrash, their known as fish bowls for a reason
Hi there, if you enjoy German car issues and complicated problems now common with most German cars check out DIAGNOSE DAN channel, he is in the Netherlands and fixes problems that dealerships best mechanics cant fix and almost makes it look easy. Take a look at his no start BMW which ended up being a shorted door handle because it had that easy entry feature/nonsense which shut down the entire car
Paul u r what u r and u r the only one of ur type..even in the coming era no one will be there like u
ScannerDanner you are "The man"!
Yeah he is I hope he can tell me what's going on with my 2003 e 320 it's in limp mode want change gear and have no brakes
Just in time. After replacing the o2 sensor and not seeing improvement I disconnected the MAF on my '89 Ranger 2.3 and turned ignition on off on off then started engine and it runs really good. Replacing MAF tomorrow. This after a week of troubleshooting. Thanks ScannerDanner.
Also, the moisture intrusion could have come from the sunroof drains. If the car has a sunroof, the drain tubes on Mercedes and BMW clog and can and often do dump water out of the tubes and down behind the A pillar covers. The water usually goes behind the edges of the dash and into the carpets and can get into the fuse boxes....And that fuse box is right below the path of the sunroof drain tube if equipped.....
Bad design causing this fault
As I'm typing this, 106 comments only 95 thumbs up. Sometimes I get the RUclips email for a new scannerdanner vid and just get excited and hit play and watch only to realize after its over I'm not "signed in" to accept my thumbs up. I try really hard to wait till I get home and signed in cause I'm just not that phone literate. As always thank you very much for knowledge and effort
I just got an idea to find my No Start problem on my S500 ... Thank you again
Experience of semi truck driver , never trust at first look it is not always what it looks like. . . We have more vibration, corrosion , corroded wires. Always check back side of fuse or signal tracer I like your honesty and knowledge
From now on, every time my Merc throws a code, I'm going to call it a Fart Code! Great video on finding bad wires and fuses in insane modern wiring harnesses!
Youre easily the best mechanic I've witnessed in action. No ASE cert but my father taught master techs and I've been rebuilding cars my whole life.
Dan, I appreciate you filming your course materials. You saved my Mercedes cls 55 amg rebuild. Along with several ac issues and injector issues on a CTSV. Keep up the good work.
Pretty basics... but well approached and explained!
Great video!
Lol, Danner goes on a rant about how it's not the fuse, then proceeds to diagnose a bad fuse. Great video for sure. I had a Ford van recently with a similar issue. Turned out to be the fuse box. Never would've found it without videos like yours. I love learning about this stuff.
Wow.That was AWESOME! As a Mercedes tech i reaaaally enjoyed watchin this video..and as a car nerd i liked it even more. ive neeever seen moisture in that cabin fuse box before ..after working at the Mercedes dealership for 7 years.....really weird.Had a similar "faultfinding" on my own 1992 mod w124 500e on my channel here...,No power from "Base module"...TO the ECU...wiring break in a Z/Soldering point.This video of yours is just another good example,that shows proper faultfinding....and how that saves you from spending thousands of dollars... throwing parts at a "problem,and risking not ever to fix the problem,only throwing money and time out of the window."( what usually happens when doing "online faultfinding looking on forums and "asking for help").Well..enough babble here...you are very much welcome to check out my humble low key "channel if you want to,even though it isnt straight up faultfinding all the time.Anyways...Thank you so much for lovely channel.Greetings from Norway , Stefan :)
Again - watched this finding the expected unexpected/known unknown. My not be the cuprit in mine, but I have found that if there is a particular problem in a particular make and model - that it will likely be found in others with same make and model.
Owned, serviced, flipped and troubleshot many VW & AUDI as well as GM make..you get to know exactly where to start looking before probing into more complex. Looks like simply pulling that fuse module and electrical cleaner + all new fuses would be prudent.
I remember during the late 70's and 80's, just about every Mercedes I'd pull up to had the tail lights full of water. My buddy upgraded every few years with another used car. We looked at a ton of them and many had leaky trunks and rotten trunk floors.
Found your channel after one of these died running in front of the house and the pushed it into my front lawn... wish i would looked before the tow truck tore up my lawn
sir, you're a Doctor
pure genius and patience!
Txs 👍🏻
Hi. Just seen you for the first time.
Picked up a 2011 W204 C250.
I’m an industrial electrician/electronic fault finder. Many different way to go around the fault. So well done.
I would cut and spade lugged those bad fuses. Stick a temporary new fuse. Just to overcome voltage drop.
No harm no foul. Lol.
Regards KevinM
Every good tech knows you always clear the fart before giving it back to the owner...
lol
Extra daig charge for the farts! LOL
now you have to say, “don’t be a farts changer”
Dear thank you for your time and effort I had the same issue with my 2003 e240 and it was the same problem that you did and the problem was with the fuse box itself 😒😒😒😒 I spent 1 hour searching for the problem and I found this stupid fuse. Thank you man.
Big thanks from UAE
Well done ! When you start working on a car, make sure that energy is allways available. Electricity and gas. Then check all the electric contacts. Pull fuses and relais. Very often, if not allways, you find the trouble maker. If Dan had checked his fuses better then problem would have been solved much quicker. But we are brainwashed by the OBD scanner manufacturers.
Even with no students in the classroom your still teaching thousands of followers
Always have you guys in mind.
Thats why I love my signal generator and tracer. helps find the wire quickly in the dash area from the engine bay
I have 2 signal generators and dont even understand how to use it. Im so ahamed to say this cuz i have fixed a myriad of stuff. I have a snap on one and the harbor freight tool one. As I use it I dont beliew what I am doing. Pffff.
@@CBRRR-eh3ky Its just a matter of hooking it up properly and not blowing up the signal generator. I mimic a stock signal "arbitrary waveform" and watch for the changes in the ECU. I made a protection circuit that is a fet and transistor combo so I dont drive the circuit with the signal generator directly and damage it.
How important it is to check your basics as you did. I could imagine the changed parts list by a individual if they didn't do their basics: Entire key mechanism to the pcm. Perfect example you showed by checking power source with this case study.
My inspiring instructor always says "Don't Be a Parts Changer" 😀.
Thank you brother Paul 🙏.
I'm always amazed at how people pay 70 or $80,000 for a car or more and then treat it like crap. Look at how filthy that car is! No wonder there's an air freshener attached to the vent.
For those who can spare $70-$80k on a car don't really care about how rough they treat their car. At the end of the day, to those people, time is money.
This is a great great video Paul! You are not afraid of tackling an unfamiliar car and most importantly,you do not bitch and moan about “ how complicated and unnecessary European cars are “,like I’ve seen many others do on RUclips! You just follow the basics and fix the car! That’s what makes you the best of the best!
I’ll be definitely joining your premium channel on your website now that all your videos are moved there!
Thank you Nick! You can do that here www.scannerdanner.com/join-scannerdanner-premium.html
Thank you Nick! You can subscribe here www.scannerdanner.com/join-scannerdanner-premium.html
Great video, as always. Love the way you take us through every step of the diagnosis. Keep up the good work!
Very good content Paul, I work a lot on Benz and it is very common issue the corroded terminals and modules, no idea what is the root cause, maybe materials are incompatible.
I support your channel because you earned, you teach us new and old techniques, that is invaluable! I can thank you enough, you made me a better tech and all is here and in your free channel. I wish you and your family the best. God bless you my friend.
And you've been here a long time!. It does get to a point were you guys will be passing me up but I appreciate your sticking around more than you know.
ESP = Electric Stability Program / Mercedes name for the electronic stability control / traction control. Damn rotten fuses, can get you in trouble every time. :-)
ESP will not work if you deactivate the AIRMATIC suspension or have any faults in the ABS system pump assembly.
Awesome Paul, like the way you approached this problem. CPU no communication, check power feeds to the CPU, found a low input, jumped it to 12 volts with enough amperage. Then everything woke up 🙂 Awesome. That's $$$$ in the Bank !!!
That Mercedes cooling fan sounds exactly like my trusty old Panasonic VCR in rewind mode. ....and man is that thing noisy!!!!!
Man that was allot of fun! Love those Benz fuze boxes. ML's have issues with water dripping onto the rear SAMs and rear box. One time, I pulled 85 dtc's from a ML350. This kind of problem solving is always rewarding when you get it figured out! Good job man, your an animal!
You should offer an online test and then give a certificate for your online training.
I need a clone first :-)
😂😂
o
Nice job!!!! That car is dejavu for me, my brother's neighbor bought one off Craigslist and spent way too much, as soon as he got home CEL pops on. Brings it to me, there is an EGR Flow and a ETC Code. Another shop had already cleaned the EGR and pipe out code came back. That pressure sensor that you tested in the video is the MAP Sensor. On mine the hose coming off of it was corroded and scan data was fixed at 20 in hg fixed it and it took care of the EGR Code. Learned that from you! Throttle was clean and wires looked good changed the ETC Assembly and took care of that code.
talking about corrosion you had that stupid cologne bottle hanging right over the air vent. Good chance it leaked at some point dripping fluid running along the wires down onto the back of the fuse box. That's my theory.
I missed that
I saw that too! Wondered if one drained out and down the side of dash into the fuse panel! That would corrode stuff for sure!
Good theory. Maybe the customer was using the cologne to clear the fart smell.
yep dont park under trees for any length of time.........causes soooooo many probs
Almost impossible to Stop. The rain run off from the outside windshield drain, use a straight clothes hanger and stick it down the drain screen slot you should be able to see the hanger go all the way to the ground take a look under the car to make sure the hanger went all the way through to the ground to clean out leafs and dirt or water will come into the car on the floor boards and wet the fuses, two drains to clean out with a straight clothes hanger. Mercedes Benz was already been sued and loss the class action for such a poor design in a $100,000 car for water into the fuse boxes in and out.
learning so much Brother you've been a great help. I'm an ex Generator technician due to my troubleshooting background. I'm able to solve a lot of these problems with your information in channel. I would not be able to solve as many. thank you very much for your help. Starting over in my life as a mechanic due to an unfortunate divorce is me my life. Your easy watching channel has helped the transition enjoyable and profitable.
Thanks again bro.
Nice ! Your still an Automotive God in my eyes Paul ! LOL !
Haha whatever you say Billy
You the man Paul ! Take Care !
Thanks for the detailed information. However my 2003 E500's issue was water entering into the ECU. I stumbled upon a flood yesterday. ECU replaced everyone is happy 😊
i hate to tell you but! with dan sullivans loadpro you would have seen the voltage drop at/to the fuse. The test you did with the volt meter and the test light to cause the voltage drop is essentially how the loadpro works and gives you a readout on the actuarl drop in voltage on the multimeter. My 300$ flashlight also paid off, i think it now only cost 150 $nz my phillips penlight premium .
Top video like always.
I'm not so sure about that, because the corroded pin was on the load side not the feed side of the fuse. The drop would have shown just on the other side. my test light woukd have shown it if it was the feed coming into the fuse, in fact my voltmeter would have even shown it with the computer still plugged in as the load. Make sense?
I bought that load pro few years ago and the first and only time I used it was on a no start cavalier in walmart parking lot. It was the same problem as this car with A corroded fuse for the fuel pump. Soon as I touched the fuse with the load pro I heard the fuel pump turn on. I am confident I would have found the problem just as fast with my test light. Save your money..
Great video Paul
The loadpro is a time saver lets say, "the wire was corroded in the firewall to the fuse box" . You would definetly proof with the volt meter and pressing the loadpro button that the feed was good to the fuse holder and that the problem would have to be from there onwards for that particular circuit. The loadpro is a time saver that is ALL its not a competitor to a test light . 30 minute 50 secounds is exactly what i think the loadpro is doing and you dont have to rig up the testlight and the multimeter.
Plus a test light lightbulb resistance changes as the bulb gets hot the loadpro has a fixed Load applyed . Well thats what i think is how it works i never seen sullivans patent.
no you wouldn't have. the meter clearly showed to voltage drop. if you like that load pro so much you should go watch the review of it on pine hollow auto diagnostics. I'm sure ivan will convince you its nothing special and a test light is all you really need.
really a load pro? does this guy pay attention to any of your content? its sad he is paying ten dollars a month and not comprehending anything your teaching us.
Great video Paul, perfect example that whatever the car , circuit or fault it always comes down to ohms law and the fundamentals. Cheers, Doc...
Thank you Steve!
So interesting Mr danner. Certainly,I never see a good electrician like you. You are alone all over the world 🌎 with regards to the work.i real appreciate. And we'll surely follow you till dikindome come.
1. you don’t use a snap-on scanner on a Mercedes-Benz- It is absolutely useless.
2. If you were to read codes from the gateway (EIS module) you’ll probably see a factory fault code indicating which terminal is lacking power.
JGTech 1 k
He’s right you can’t use snap on with Benz it’s useless really. With a Benz tool he would get to see exactly right where the problem is.
Matt C I have troubles with my car with the start and hot start.do you think that with Benz scanner can help me to solve this situation
no time is late am getting the knowledge now in 2023. thanks
Powers & Grounds .......Yes! ....... :-)
Fast, Automotive, Repair and Troubleshooting
I see what you did there 😂
I'm not a mechanic but I work on my Mercedes cars as a hobby so any vid's with a Mercedes + ScannerDanner I'm watching... Also on Mercedes if the car won't go out of Park the reason is a dead battery.
Scotty Kilmer is turning in his grave.
He'd have run a 35mm2 wire, using his excellent (urgh) welding "skills", with a 300A switch drilled through the dash.
He's really rough...
He seems to be alive and kicking still.
He'd tell them to sell it and buy a Celica.
A 30 year old Celica..
To tell the truth, Mr. Kilmer has some kind of a point. It is depressing that products today have planned obsolescence in them.
If you want to have say a smartphone that is up to date you will have to put up with the fact that they are not easy to repair. None of them. The battery is not user-replaceable and they will become sluggish with a software update because of a "new battery saving feature" that is "incompatible" with older models. The point is that **every** major cell phone manufacturer is doing this even with the most expensive models.
The same can be said about cars though it is comforting that a Mercedes isn't too impossible to work with after all. Combine that with talented Chinese engineers that develop good tools that can hack into the OBD-II diagnostics interface for a mere fraction of the price of that tool he is using in the clip.
Honestly, I don't feel that what the Volkswagen did with the diesel emissions is so bad. The smartphone manufacturers engage in much dirtier practices.
Man brother i have been dealing with my mercedes benz e320 exactly like that one i had the same exact issue i changed my whole ignition a few months ago but still have very little to no communication when i plug my scan tool now you just pointed me in the right direction thank you so much for making this video. Great video and amazing detailed explanation
the fan from HELL..
No cloning we only live once Make the best of it love like u live live like you love ......you welcome Dan its ur work that has brought you this far ..you do good work people come bk to you
lol, "it wouldn't start so I replaced the starter" lort..
" Ignition Relay & Auxillary Fan Relay "
@sideburns2009 No, no I needed a oil change so just bought another car one with fresh oil.
My teacher thanx from the west side of the world i really appreciate your efforts man , car doctor clear points , direct diagnosis without more philosophy thanx for inspiring me ❤
lol just sell the Benz before you spend $$$$$$$ . Our shop make a fortune on eurotrash .
aviomaster alot of other cars have just as much. My GM trucks all have over 250k minor idiot lights etc.
German cars horrible. They lost ww2 and seek revenge on us selling this overrated junk. Keeps our shop busy .
yeah,classy junk,nazi style.
No substitute for real world experience. New techs within their first 3 years don't tackle jobs like this without a mentor!!! Guidance and persistency!!
Holly crap, that fan does sounds like the jet. What a great find. You got there by understanding circuit design and even that you were surprised a bit by the corrosion, the video was excellent because we were surprised with you. But the commentary kept us on track and it helped me visualize voltage drop. Thanks so much for letting us hang out in the class room/shop.
Great Danner nice diagnose, for a mechanic this could be a expensive one with a lot of parts ............ a new diagnostic to remember check the fuse if fuse is ok pull the fuse check for corrosion. The older types of fuses with aluminium on the fuse and copper on the fuse box did get corroded without water and could give a lot of problem but you only rolled the fuses and problem disappeared then you change to new fuses. Later learned that if you bought fuses with copper no more oxidation best to have same kind of metal and not mix..
But this case was moisture. Thanks for your time Danner
Mr danner ... it’s great to watch this, it’s like watching an artists paint the picture and as you watch it comes together ...... patience is the key and there’s about 70% of techs who think they know and talk the talk but still get caught out , I’ve personally seen techs going straight for the one of fix and finding out it’s a broken wire , keep up the good work
Yes, yes, yes!!! I'm a 10 yr ASE Cert Master Teck, and this is my life, "Im not going to do that" but I always do, nothings easy!!! I've memorized countless diagrams, only to find cure where I started! It's become habit to literally pull every fuse and inspect when. Concern is electrical intermittents and closed circuit B+ and ref signals issues. Auto Electric is good brain exercise that is required to enable the mind to think outside the box in this field.
Thank you mr ScannerDanner. Your patience paid off. I've already watched an another video where you were visiting at the ericthecarguy's place discussing about the OBD task with him. Greetings from Helsinki Finland.
Fundamentals! You’re videos are so easy and fun to watch. Thank you and your Son.
We come across water ingress quite often on Rover 75 and MG ZT's which is what we specialise in.
My advice while dealing with any unprotected plugs (ie not weather proofed) while they are unplugged simply pack the plugs & sockets with clear grease or battery terminal grease or even red rubber grease . At least if you don't trace the source of the leak at least if water does hit the plugs or fuse boxes etc it's not going to cause further corrosion due to the grease acting as a fantastic water repellent.
We've used this practice for years and no problems will arise with interference or cross conductance or voltage leakage etc.
In fact if the factories greased every plug and socket and fuse blade there would hardly be any faults but hey they don't want their cars to last forever do they ?!!!
Nice video and clever superimposing effects through your scope screen :)
Hello friends
Oh Yeh the bad fuse has bitten me too! I dont know what it is about Mercedes of this era, many of them suffer from corroded fuses I've seen it on multiple occasions - I think they often get condensation issues in the cabin and thus the crusty fuse box. On older 90's models I've even seen the wood trim fall off due to damp.
great vid as usual......
Hey Scanner Danner, Love watching your show, you are indeed an Guru & Master at what you Do! I Have an 2003 Mercedes, no crank, no start, but the starter engages, diagnosed no fuel pressure, have already verified fuses & relay works, my pressure sensor is integrated into the fuel pump itself, so I'm ordering another pump that's where I'm at, Keep up the good work!
charles potts i
"Mercedes. Engineered like no other car in the world." Thank God!
I do believe they are engineered to fail. I guess it keeps the riff raff from owning them and keeps them the toys of the richest even when they are old you will need to Chuck money at it to keep it alive. It’s a shame, because they are beautifully engineered and finished cars - can’t believe they do this to their own creations; no pride, all about profit
"Dr" Feyi (of LTI fame!) here...
...Checking fuses, Mr Danner, is just that...CHECKING FUSES!
I am actually notorious for setting bugs that technical tests would miss but visual ones would find.
Not to worry though, I have been stumped at my day job chasing similar v.drop issues and regret not having the time to go back and video the problem and its final resolution.
That said, kudos Sir.
I plan on making a Northern run and hopefully make detours to see you Ivan, Eric and Keith...
...when it warms up (of course!!!)
Until then, cheers!
-100
I like how u try to be so patient because a lot of times when I'm messing with the electrical part of the vehicles it gets on my nerves. THANKS FOR THIS VIDEO UR DOING A GREAT JOB.👍
Great video! Gave me insights into why my SL500, 2004 won’t start intermittently… likely the power to the cpu!
As a MB Tech myself!Ur a genius!Keep it up!!!
What causes the alarm to go of once brake is depressed to put car in gear. It also want change gear. Hot post on battery also gets hot!
This problem with corroded fuses and melted fuse sockets is very common on tractors/farm machinery, another great video
New to the channel, this video brings me back to a car we had in the shop at my old job (s500 with the same engine as this) which randomly broke into misfiring and some times no start when it warmed up, it had already got an ecu fitted a few years earlier, looking at the way the car in this video is behaving I’d almost put money on it having the same issue......!
So glad you tore into that to find the damage. At first I was thinking that it got wet with the window stuck down, but then realized that the window was the effect, not the cause. Another great video. Thank you!
Dude: here it is July 2020 and I am seeing this for the first time. Impressive. I know M-B. Thumbs up from Death Valley, CA. where we keep a stable of S-Klasse cars operational.
You have pretty good knowledge of S500s?
THANK YOU SO MUCH FOR THIS VIDEO! I'm having the exact same problem with my 2013 C 250! The engine misfired due to failed spark plugs and a broken head gasket. I went ahead and fixed that, but there is a separate issue with my car not starting and not connecting to the ECU. My cooling fan also blows at full speed with the car off. If I open the doors, the hood, or the trunk, it triggers the fan even if the ignition isn't going. I have to unplug the main relay for it to stop. A friend of mine who works on European cars said he couldn't find a short, and that it's probably my ECM that's fried, but he didn't do the 5v reference. He just tried to get into the ECU with the OBD reader and failed. He could communicate with all the other modules, but not the engine or transmission. From watching this video, I'm starting to think that I also have a short somewhere. It was termite season here in the south, so I wouldn't be surprised if they got into my engine and chewed some wires. Also, lizards seem to enjoy my car, so I wouldn't be surprised if one of them got to the wiring somehow.
Excellent video. A prime example of "focus on the main problem" and fix it first. No start? F-16 cooling fan? Fix that! The other stuff you can knock out as the customer wishes. You probably have won their trust by then since the thing starts and runs now.
Nice to see you working more Euros. The fuse box on that Mercedes is called a SAM (signal acquisition module). It "intelligently" monitors many circuits, and if there is a problem, will shut the circuit down. Not the case here, but sometimes you may find a circuit which comes and goes, and what you have is the SAM triggering.
Also most Benz have two hood positions. A check position, and a service position. On the inside of the hood hinges you will see these spring loaded tabs you can depress them which will allow the hood to go completely vertical. Your back will be happy 😉👌🏽🙃
In addition to learning the ins and outs of troubleshooting modern vehicles from your channel, I'm also learning about myself! I could see the exact moment I'd have lost my patience, and ran a wire. There's no RUclips vid in the world that will help me with that problem - gotta do that one on my own, lol. PATIENCE!! I need it BADLY! Especially with modern cars.
Excellent vid, as always. I think you're helping us just as much as we (collectively) are helping you - it's an extremely rewarding circle of GOOD, any way you slice it. :) You got a subscriber for LIFE here!
You guys are helping me! And pushing me too in a good way
corrosion because of the top AC vent/condensation maybe? MAN I love the diagnostics you do on your channel!
Starts the video with saying "first check your fuses" and proves his point. Great video.
DIY Carguy he does a terrible job of checking fuses. A fucking test light !! Use a dvom
Greetings from Germany. Paul‘s the man. Awesome Job. You‘re showing us the real automotive GODMODE
Have you ever seen DIAGNOSIS DAN from Holland? Simply amazing is an understatement and I am serious
jim dandy hey jim I'll try my best als soon as possible. As you know Christmas' in the air. My family would be angry seeing me watching youtube😃
Mr.Danner. I amazed what you did and how you fix the issue, i was excited all the time watching you digging hard to find the problem i wish i am young to be my tech teacher. i wish for your the best.
The struggle of pulling wires is real. I love how you do things. I am changing the way how I used to do things. Great staff
Love the way you were arguing with yourself about not taking it apart and then you got the better of you (lol) and took it apart anyway. Cheers
I do this ALL the time 😂
You Rock Man .... I have just this problem with my MERC ML 270 and I will go at this just as you have shown but straight to the fuse and contact aspect!
thank you !! Greetings from LATVIA !
Your the man, I just worked on a E350 that had the same exact problem. Without your guidance, I’m not sure if I would of fixed it as soon as I did. Definitely going to watch your course. Great instructor!!!!!
I know I am preaching to choir. But that was excellent. Crazy Ya vool cars, but the basics r so important. The load of the test light, the voltmeter numbers, the tenacity of the (not so) old hound. Love the learning experience. Going to try the website a bit. I also like that quick picture u took. Probably to send to the owner to give him a visual. Bought an old Vantage on eBay. All the good channels have driven the price up on those bad boys. We will c if it works when it gets here in no rain no rust So Cal
Have they gone up in price from us? That's crazy!
ScannerDanner Premium I paid 425.
S.Danner: You RULE! I watch your "Sensor grounds & 5v reference" "Hall effect...Pull up...pull down..." videos just to relax! Thanks bro, you got it goin' on. btw Later Benzs' cooling fan is energized when the A/C compressor circuit is energized - even on cold start. Hit the IO button to remove it from operation (center console lower right button) or shut the climate system off completely (lower center IO button.) **It WILL START automatically but not "always on." Paul
I really enjoyed your video. I am not in this field. Analysis and struggles were great. When you pull back car out, i was happy.