Alternator Replacement [2003 Mercedes E320]
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- Опубликовано: 10 окт 2013
- In this video, I replace the alternator in a 2003 Mercedes E320.
TRANSCRIPT:
So in this video
We're going to be replacing an alternator
in a 2003 Mercedes E320
He's on his way now
Step One, Disconnect the battery.
Do the negative...negative side
There it is... Make sure it cant touch it
You don't want it coming back on and
giving us a shock.
Alright looks good.
Okay we're going to take off these covers.
So next we gotta remove the belt.
Here's the tensioner
17mm, on the tensioner.
aaaand...
Just turn it
And the slide... Actually I am just going to slide the
belt off the alternator.
There we go.
And then
Let go..
Okay 11mm, right here
We have another 11mm on the bottom.
There it goes..
Chatter
There it is, and now, there is a 10mm nut
holding on the hot wire and an electrical connector
Oh this has got to be a 13mm.
Now there is an electrical connector
There it is! And then just fish it out
And... I don't know if you can hear that
But this was making a lot of noise
Now for the new one.
This is the new one, nice and quiet.
Plug in the electrical connector
And then
...get it down there first.
And now for the...positive cable
Put the nut back on.
Definitely don't want to kill this.. Just snug it.
There
We might need to pull out this sleeve a little bit
There is this sleeve here.
Let's see if I can get a bite on it...
There it is!
Alright.
Alright so now... We have to re-route the belt
It is a good idea to draw a diagram, or have something before hand
But this pretty much all stayed intact so..
There we go! Make sure the belt is in the center of the pullys.
Now check all the pullys, make sure it's on all the pullys in the center... Nothing slipped off..
Okay, Battery goes back on.
You don't want to strip it out.. There we go.
Let's put all the covers back on.
Alright, lets start it up!
Nice and quiet! 
Авто/Мото
My dad got quoted $600 to replace the alternator and after seeing your video I did it for him. $170 for the alternator and 25 minutes r&r. Thanks bro you saved my pops $430 🤑
Awesome!!
I just changed my alternator after watching this video.. however!!!!🙄🙄🙄 I totally missed the tension belt lmao! Would have taken 30 minutes.. but because that belt.. took forever!!!! 😂 good work and thank you for sharing
Agreed on the positive cable removal. The red cover was covering the wrong post from the beginning. Nice video and thanks.
Just watched your video. Thanks for posting did it myself. Saved a ton of $$$$$.
thanks for showing the removal of the alternator using the crowbar - I couldn't get mine out until I saw you do it.
No problem! Thanks for watching!
THANKS YOU GUYS ARE THE BEST
Thanks!! I didn't know how to move that sleeve in the top bracket when re installing 😊
Looks like the same procedure for my Chrysler Crossfire..thank you!
you did awesome! love working on this m112 engine. I just out anti seize on the bolts.
That was very helpful, thank you
Great video. Thanks
got my project for the weekend
Excelente video
Awesome!!! Thank you Matt!
You're welcome! Thanks for watching.
Very helpful!
Thanks very much. Dealer wanted a grand for this job and local mechanic half that. Did it myself only replacing the voltage regulator. Total cost, 30 bucks. Those sleeves in the mounting bracket are a pain.
Nice! Yeah never go to the dealer. They will take you to the cleaners!
Thanks for sharing. I learned a lot. I do suggest for your own safety to remove your watch/jewelries, possibly scratch the cars finish.
When the mechanic lifted the red cover on the battery, it was the negative terminal on the battery label. you directed him to do the negative terminal, he proceded to undo the red positive lead, labelled so on the battery surface.
Nice!!! Gonna do mine tomorrow. 167k miles on it and still the original alternator
had it done in less than half an hour!!! I love working mercedes cars. Only pita was the 13mm bolt was rusted so i hit it with pb blaster and it came loose. Also do not over tighten the bolts to the alternator because they will strip because it is aluminum
nick elias Thanks for the update! Glad to hear you got it done.
MattsMotorz
Yup and thanks for the video. I was worried it would be a pita to get out and I did exactly what you guys did and BOOM! Paid 99 bucks after online promo/ core refund at advanced auto parts. Dealer wanted 900
nick elias same here hahaaa
hey man ! thanks for the video. Will it be the same on c32 amg ?
Be careful breaking loose the mounting bolts. Occasionally one of them will be seized to the timing cover, if forced the cover will break and then your replacing the timing cover. Also rec removing the ground cable from the battery.
my 03 w211, usually would give me battery consumer switched off, i put subwoofers and it dims the lights with high volume.. i replaced both main and aux batterys with gel Stinger batteries recently.. and my lights still dim, u think it might be voltage regulator not passing enough charge to altenator? and i still get that Battery consumer messege and a ABS light malfunction visit workshop after i changed my batteries
Pearl Wilson, Mercedes Mechanic's Assistant
Have you changed a battery before?
you took off the positive side
thanks a lot I have a C320 but its exactly the same setup ....... I couldn't find the tentioner for the surp belt
Thanks
is it similar to changing it out on a 98 E320?
WAS THAT 2 HRS. OF LABOR AT 152.00 A HR.
Nice...
Love the vid. My 04 E320 was having charging issues and brainfarts because of the alt. 20minute change here with shit tools fro walmart
What kind of problems did you have?
muito bom .
That was great!! thank you. Do you have a video of the engine running before the replacement? thanks
+Bloom0to9 Nope. But I can say that it was making a whole lot of noise!
Thanks for the Fast Reply ; just another question sorry to bother you ; was your car winding as soon as you would crank it and continue to whine or Would the whining noise gets louder as you turn your steering wheel because I was more than sure it was the power steering pump butt usually if you have a bad pump he would get a lot Louder whining noise as turning the wheels your help and knowledge would be appreciated thank you.
Yeah, typically a bad pump gets louder when turning the wheel. Especially at a stand still. I cant remember the specifics for this case as it was a couple years ago.
good video didn't think it was going to be that easy I had a question I got a 2001 Mercedes CLK430 it's making a loud whining noise I was thinking is the power steering pump but as I turn the wheels the noise does not get louder so I've been reading sewing blogs and it might be the alternator bearing but there is no battery light on so I'm confused please reply as soon as possible thank you
A bad bearing doesn't really have any impact on the function of the alternator. It may make it less efficient but you aren't likely to get a battery light come on the dash. The problem is most likely the alternator bearing as this is a common issue with many cars.
you removed the positive battery cable not the negative
+steven pierce Ha, it actually wasn't me that did that. I had the owner of the car help me out and I told him what to do. But I guess I wasn't paying attention.
thats what i thout neg is brown
What if the bolts are frozen?
how did you wiggle the alternator out past the hoses in front of it?
?
Same for 2004?
I love beavers
hey mat I replaced my alternator about 3 weeks ago now I'm getting a alternator battery light on dash of my 05 e320 any ideas?
+Rehaz Khan It is most likely the alternator again. Most likely you bought a rebuilt one (as most people do), and some times these just don't last very long. It is definitely under warrantee so bring it back where you got it from and get another one.
What alternator brand and model did you replace the old alternator with?
In this case the customer brought me a part. I believe he ordered it online and said it was a dealer part (in other words, not aftermarket). But I do not know for sure, it was so long ago.
ok thanks for a reply
i replaced mine and the car started but then when i turned it off and tried to turn it on again the ignition locked along with the steering. Do you know why?
Ever found out? Was just about to do mine
Why did you tell him to disconnect the negative side of the battery when it was clearly marked positive with a plus on the battery
Where did you buy the alternator & for how much?
The customer bought the part in this case. I believe he ordered it online somewhere. I personally always like to shop at rockauto.com
Good job what about a 1997 E320
HEY IS THIS VIDEO GOOD FOR AN 2002 E320 4MATIC AS WELL??
+Jimmy Jackson I believe so yes.
MattsMotorz could You tell me the tools Im going to need to take it out??? I'm going to try my hardest to get mines out today. Your video Is really helpful bro.
I cant unfortunately. I did this job a LOOOONG time ago and have long since forgot. :\
how hard is it to replace alternator in 02 s500 benz
Ronald Jones I went to the dealer in illinois and they quoted me almost $1100. HA HA HA fuck that. #localmechanic
is the alternator located in the same place on the s500 97?
Don't know. Never worked on that vehicle unfortunately.
I HAVE A BENZ E 320.YEAR 2011,ALTARNATOR GOT BURN. I BROUTH A NEW ONE IT GOT BURN TOO...I HAVE CHECK EVERYWHERE THERE IS NO CABUL TOUCHING....AM CONFUSE
why didnt you take off your watch? u wil scratch it all up
Matt ... where are you located ???
State College PA
Boohoo why can't you be in Texas!!!
Sorry! Lol
You disconnected the positive terminal not a big deal but you didn't disconnect the small battery that is a big deal so the car is still energized.
Bought voltage regulator 25bucks hope works
lol he was about to remove the negative wire from the battery but when you told him no just remove the negative wire you confused him and he just followed you with not paying attention and removed the positive one (red )which is the one you thought it was the negative
How do you know if your regulator is bad for a 2004 E500 4matic
Take it off the alternator and inspect the brushes on it.
If its whining or smelling weird its fried need a new alternator
you dont have to take the belt completly off
Will this work on e 500 2004
Not sure. I do not work on Mercedes much. Check to see if they have the same engine. If they do, then it will be very very similar.
MattsMotorz lol I already start working on it missing a 17mm for tensioner but I'm gonna go get that today but looks like I'm gonna save a lot of money because of you!! appreciate you and your video!
That's awesome! Glad I could help out!
MattsMotorz spoke to soon cant get the damn nut off the back of alternator lol spent all day tryna go at and I dont want to strip it any more than i may have it just seem impossible to remove any suggestions on how i can get nut off ?
Remove the alternator first, then flip it around and pull it forward and remove the nut.
DUDE WTF IS THE HOLE ON THE TENSION PULLEY...I DONT THINK NOBODY SEEN THAT PART?...I SURE DIDNT!!
They missed the part of tightening the tensioner 🤦🏽
very good. It look like a pain in a ass to change my alternator in the Benz.I am use to doing my trucks. Don't look that hard. Easy said then done. ill find out tomorrow. thank you for the input. I'm from Jersey so if you here me saying what the fuck. I didn't do well. thank you.
I am sure you will do fine! I am also from Jersey (don't live there anymore though)