how to replace rain light sensor + ecu module mercedes benz w204
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- Опубликовано: 28 апр 2020
- #w204replacerainsensor #mercedesreplacelightsensor #mercedesreplacerainlightsensormodule
whats up guys back again with another w204 video 🎥🎥
if your new to the channel im mikey
this is mikeyz vlogz
and on this channel 📺📺
i do a whole bunch of videos on mercedes benz w204
how to videos
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fixes
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and step by step tutorials
helping other w204 owners to DIY themselves at home and help keep the money in your pocket 💲
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i also do some product reviews and comparisons time to time as i love to share the cool gadgets that catch my eye
in this video i show you how to replace the light/rain sensor for your mercedes w204
this procedure may apply to other models also
but be sure to double check before attempting
tools needed
trim removal tool
scribe/pick tool
flat head screwdriver
this is a very doable diy
anybody can do
hints
be careful not to pry too hard when removing the silver clips
as they are very fragile
careful not to break the ecu module for the sensors
part no.
rain/light sensor: A2048208485
ecu module: A2048210851
if you have any questions feel free to leave a comment in the comment section below and i will do my best to answer them 💬💬
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mikeyz vlogz
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PLEASE NOTE
this is my own personal vlogs. the views and opinions expressed here represent my own and not the people, institutions or organizations that i may or may not be related with unless stated otherwise My thoughts and opinions change from time to time,as i come to learn more and develop my own understanding about the things and issues that i am vlogging about. my vlogs just provide a brief insight of knowledge , views and opinions that i possess at that point in time, which may change overtime. comments are welcome. however please keep in mind that offensive, unrelated and tasteless comments may be deleted. this also relates to off - topic comments. i am not responsible for the content in the comments, or in blogs or vlogs and other online content that i may link to or refer to, other then the comments made by myself. i will not be held responsible for any damages or issues that may occur during or that may arise after the use of this video, if you choose to do so. this video should only be used as a guideline. i am not a qualified mechanic nor a qualified electrician or a professional.
Absolutely fantastic... good clear instructions like always
Great video explanation very clear instructions
Good and clear video with detailed explanations. thumbs up!
thx
Great editing man. Keep up the great work.
thanks mate appreciate it
Excelente video muy buena informacion saludos desde Costa Rica
hope u guys will enjoy the video... this is an easy fix ... again apologies for the error in judgement with the light sensor... my bad... hope this video clarifies all that...dont know what i mean ??? watch the video and find out... look out for new mercedes w203c200k video content..!!!! whos excited??
Love your videos
thanks mate
Well done
You are the best explanations love it and i am glad that i learn to fix my rain and light sensor myself and safe huge money please tell us how to replace rear brake sensor cable thanks..👍
thanks for saying so and the suppprt
Very interesting
🔥🔥
Awesome
Omg I have a Mercedes C200 kompressor elegance 2008 W204 i’m so excited for that content when is it coming out?
mine is a w203 tho my c200k is. 203 not 204
Thanks Mike, great videos. You helped me before with my Merc ESL problem and column removal. Have message "Auto light inoperative", changed sensor but still get error message. Aliexpress claims "Registration required"? Bought it from Amazon or Fleabay, but would "registration" still be required?
My iCarsoft MB II does not show an error related to the light sensor, so I cannot delete it. Would it be the ECU at fault in my case? Thanks.
hey bud welcome.back..and thanks for tour kind words ... now I've heard mixed msgs from this ..so wen u have auto lights inoperative it can also be the sensor of the actual headlight too... yes first you check the window sensor and apparently it does need to be coded ... that's what I've heard
💯💯
Amazing!!! I do have a question for you... When you get the message Auto Lamps Function Inoperative would that mean to replace the sensor and the ecu or can you just replace the sensor.. I am confused because I didn't know if I have to replace the ecu or not too
i believe that would be the sensor however if u replacs that and it doesnt fix jt then u would know its the ecu .. but always try a scan first to see if the obs2 scanner will show u the fault code
Hello I have mercedes c klasse w204 2011 c180 cdi i have problem whith a light the driver side dont working i change olso lamps and the same problem. Show my light system inoperative
I have a 2003 C230K (w203) and I have tried 6 different used rain sensors and none of them work. Although they are all from junkyards, I doubt very much they are all dead. Does my model have an ECU like you have shown in the video for the W204?
I don't think so although u may need to have it coded to sync
I've replaced that sensor for a new one from Mercedes dealership here in nicosia and still have the Auto Lights inoperative. Rain sensor works fine but Auto lights nit working. Any idea where the issue might be? I'll appreciate your help.
have u had the obd2 scanned in order to show what the fault may be, its always a good idea to start with scanning the obd2 as it narrows down what the issue is, once you do that it will point you in the direction of what the issue is, may be something as simple as having the new sensor activated or synced... this was what i had to do when i changed out my headlights , i have to activate and sync the headlamps with my car so the ecu could recognise it, just an example of what mite be needed sometimes for electrical components... i cant say definitively your issue as i havent had the problem, do a scan see what it says, jump on the forums and ask around..so many helpful ppl out there friend...
@ Douglas sampedro i do have a same issue, did you figure out what was wrong? Can you please kindly let me know?
Had mine replaced and actually auto lights work properly and so does the rain sensor but still have the AUTO LOGHTS INOPERATIVE error message.
The automatic day/night mode in the radio not working, neither the scrolling on the command controller.
I'll appreciate any help
what do u mean by the auto day and night mode in the radio not working? amd the scroller for your audio system not working? that is usually due to the shaft breaking in the scroller for your audio system...im not sure about the day night mode... can u clarify what u mean
@douglassampedro
Mercedes Computer system uses A combination of simple sensors that control toggle between daytime and nighttime display mode, which changes the backlit settings on the central display, instrument cluster and backlit switches knobs and accessories threw out the cabin. The goal of this is to enjoy a more precisely tuned luxurious presentation while increasing driver safety; instead of having a simple nighttime or daytime mode; headlights on or headlights off,
The system is able to determine the correct combination of lighting settings using a simple logic computer module that takes in current sensor data and historical sensor recordings during the current “trip” and applies this to preprogrammed set of
Values.
It also allows for when rain is detected on the windshield it is to automatically turn on the wipers after a set amount of interference on the sensor( more
Interference = Heavier rain. or amount of time.
So if it begin to pour rain without warning lights will turn on nearly instantly or if it began to sprinkle for several minutes it would record that in the historical sensor data and allowing for more data to decide headlights activation accordingly
As long as windshield wiper Control wheel is in one of the two auto sensitivity settings. This allows rain sensor input to be fed into the said lighting control module (all of this varies country to country for legal reasons. all are closely related but where for example DRL‘s are mandate it is at this step it is programmed and made not be able to turn them off )
also as a tip to preserve longevity of the rain sensor when rain is definitely unlikely turn off wipers completely to position 0 By doing this you’re Turning off power to that sensor which by design when turned on to “auto” The sensor is experiencing “wear and tear”
It works by recording light reflection generally the main cause of failure is the optical return sensor failure to send data in the form of light return percentage to Computer module due to “burn out” . Especially if it’s on throughout the cars entire life. It also lessens the load on the headlight Control module by reducing the number of input values.
But be warned if it is raining but still sunny outside and if you’re low beams are on because it’s raining and you switch your wipers to 0 your headlights will switch off because they are only using light sensor data input. Putting you in danger.
The sensor system works in tandem with the headlight/ rain sensor located between the rearview mirror and windshield as shown in this video. But it also uses a“ cabin ambient light sensor” which is located generally in MB 2007-2016 next to the central display screen. (Black small bump in area you can feel it you run your fingers around it) you can test its operation by placing your thumb over it and watching the display invert and darken within 30 seconds
The ambient light sensor is charged
With determining color contrast settings of display screen for the radio. (If set to auto) as well as turning on switch lighting threw out the Cabin. The brightness of all this can be controlled in the instrument cluster settings under lighting ( if built in Germany this is true; but for the American made SUVs, it was decided it would be better for consumer if it was an extended rod that rotates clockwise and counterclockwise threw the dash board area which was common in their market for many decades past and it would be more likely that they would use it for their safety) now in newer vehicles ambient light sensors change the brightness of the ambient lighting if selected to be automatic. (this is a huge advancement in automotive interior lighting by always selecting the best choice for the environment of driving)
So in functionality for example on your drive home in the evening the sun could be going down and intermediately getting sunshine on the highway. And your DRL‘s are no longer sufficient ( due to lack of rear lighting in US market) Low beams turn on and only instrument gage lighting but with out any change to cabin Ambience settings. It’s as if your DRLs never switched off and it is still fully day light. This is because ambient light in the cabin is still satisfactory but not satisfactory outside the vehicle for safety visibility purposes for other drivers. Time passes and the sun is now fully hidden,
Low beams are already on from earlier but now cabin backlit lighting will turn on which could include foot well lighting, switch lighting and ambient light. But your central display would still remain white background contrast
The final activation sequence would be the ambient light in the cabin being recorded to a certain point that would make The contrast invert on the display for reduced eyestrain and safety.
Since you have replaced your rain and headlight sensor it would be recommended to replace your Cabin ambient light sensor. As it can be sending invalid, inaccurate data ( it should be throwing an error code for this specifying which sensor) using MB STAR
The failure rate in this sensor is much less than the headlights and rain sensor but can be increased with excess sunlight shining on the sensor threw out is life. Due to its design
You could also try to reset the entertainment system By holding the power button for 30 seconds and allowing it to reboot. It could also fix the sensor input for your toggle knob but this is unlikely. Find the instructions to put your entertainment computer to place it in diagnostic or engineering mode from that menu go to error code storage it would record the data input error there just Google the error code numbers if you don’t have star
(my apologies for grammar and word choice English is not my first language. I am good for casual conversations but describing technical aspects is best left for German )
@@josephmorganr.mitchell2985 nice . Thanks
God bless you
cheers matey
Hi,
I’ve got a 2016 Vito. Auto long beams stopped working. No error message. Auto wipers work fine. Fuses are ok. Obd scan shows no errors. Any clues?
wen u say long beam do u mean high beam ??
i have c117 with only light sensor. never had rain sensor. xentry say its the part but rain function its faulty. can i retrofit for rain too? use vediamo for. coding? or monaco? thanks a lot
honestly I'm not sure
not sure ad I don't know much about coding
Is it possible to place a rainsensor in a W176 that came without rainsensor?
anything is possible it just depends how far ur willing to go and how kuch it will cost
Did u code bfre installing
no I didn't
Hello friend i have mercedes w204 20011 model and left lamp its of i change i put new lamp and the same problem don't come one i don't know what is going on
Xenon lamp
so ur front headllamp is it bi xenon or halogen
if its bi xenon it can be the ballast .... if halogen i would start with fuses ... and then get an obd2 scan ....it should tell u whats wrong
@@MIKEYZVLOGZ hello show i out in computer and show my one code no 1669010201 module lights
@@bledarbani1868 didnu google the code ..it will tell u what it means
My wipers doesn’t stop when I am in the tunnel, is this because my rain sensor is broken?
it will.relate to it.... so usually wen your In a tunnel ..yes..ut should stop and there isn't anything hitting the windscreen and sensor an pick it up..so it stops...
what if the error message does not go off after you replace the sensor???
get it synced
When are you going to do another giveaway
not sure maybe in acpl months
Hello! I have The same problem Whit mine w212 2011 i have replaced The rain sensor but i still got The error message auto lights not working i have even replaced The little ecu module that runs The rain sensor but still not working any idea what the problem is ?
not too sure ... it could be the actual rain sensor it self
the replacement part is from the car scrap can probably be so that this is also broken in that case damn bad luck I have! But the orginal part number must match whit the new one or not ?
@@alexanderosmani8177 as long as it works it should be ok ... as long as the part is the same .. usually there a universal part no .. cuz alot of models use the same rain sensor
I have tried from a friend's car his sensor to my car does not work but my sensor to his car works just fine.. i dont get it :/
@@alexanderosmani8177 that puzzles me ... I would try another one of possible or even ask mercedes ... I'm not sure what the issue is ...
Just did a sensor, still no working... the ecu needs changing too?..
u might need to sync to your car ..
@@MIKEYZVLOGZ do I need a special scanner? Or is there button logic tricks? I have a c3 star das.. no software...lol
@AndyChristou u need the coding program..I'm not good with all tht yet I still have to learn
@@MIKEYZVLOGZ oh no!
Everything works but I’m still getting and error message
di du use the correct part, you shouldnt need to reset , but maybe u need a quick code
@@MIKEYZVLOGZ thank you I called the dealership and they said I need to have it programmed to my car $285 dollars
Why not get to the point!!!! 😜😂
love it ..lol.. sorry bout that just trying to speak to ppl who aren't as mechanically minded as others
Hi;) I`ve got the light sensor problem, I`ve exchange it and there is no change I still get auto light inoperative and fault code in driver sam U023100. It`s nr is A2048204326, Maybe You have any idea what to check.
Hi mate sorry to hear... did u clear the code once u fixed it ... usually once fixed it should clear but I would clear it too and see if it changes.. if the code is still there .. there's another issue... wat didn't change ? The ecu the sensor? The entire module?
@@MIKEYZVLOGZ I`ve tried to clear but it won`t. I only changed the sensor on windschield.
@@slawomirgierczak561 u may need to check the ecu module