C32 AMG, C55 AMG (W203) 2001 - 2007

Need help/advice removing C32 AMG ECU!!!

Thread Tools
 
Search this Thread
 
Rate Thread
 
Old May 4, 2010 | 03:58 PM
  #1  
jroush06's Avatar
Thread Starter
Newbie
 
Joined: May 2010
Posts: 10
Likes: 0
2003 Mercedes C32 AMG
Need help/advice removing C32 AMG ECU!!!

I am trying to remove my ECU out of my 03 C32 AMG to have it checked out. My local dealer is telling me it has gone bad and told me just to order a new one. I wanted to have a company check it out first before I went and spent over 2500. IS there a write up on how to properly remove it? Or could anyone give me some advice?

I usually work on mustangs, so the mercedes is somewhat new to me. I took off all the covers, the ECU isnt bolted down, it will move freely. I am stuck on removing the modules with the wires attached. I dont want to break anything. Any help would be appreciated. Thanks.
Reply
Old May 4, 2010 | 04:04 PM
  #2  
M-bENZ's Avatar
MBWorld Fanatic!
 
Joined: Sep 2007
Posts: 7,136
Likes: 5
Corrolla
Any pics of your ECU location?...if its the same as CLK I can show you how. Its pretty easy.

Andy
Reply
Old May 4, 2010 | 05:24 PM
  #3  
400+ HPC32 AMG's Avatar
Member
 
Joined: Feb 2010
Posts: 81
Likes: 0
2002 C32 amg
This should help. The friendly staff at Evosport sent it to me.
Attached Files
File Type: pdf
MBZ_W203_C32_ECU_Removal.pdf (425.0 KB, 1377 views)
Reply
Old May 4, 2010 | 06:38 PM
  #4  
jroush06's Avatar
Thread Starter
Newbie
 
Joined: May 2010
Posts: 10
Likes: 0
2003 Mercedes C32 AMG
Thanks guys, that helps alot. My ECU is located on the driver side, back corner, right underneath the driver's side wiper blade arm. The ECU seems to not be bolted down, just sitting inside the container box firmly. Its not moving around or anything though.

Im going to try to the instructions from the PDF file that was posted. I really appreciate all the help. If anyone lives around me (in Va), I might need some help. Working on mercedes is new to me! ha ha I also have to try and remove my supercharger soon too as well. I was told by my dealer that the bearing is going out. Removing the supercharger is sure to be a challenge!

Im going to try again tomorrow to remove the ECU, I will keep you guys updated.
Reply
Old May 4, 2010 | 07:08 PM
  #5  
tommy's Avatar
Out Of Control!!
 
Joined: Nov 2001
Posts: 10,067
Likes: 11
From: Westwood, NJ
2004 Civic Si. FWD for the Win!
I'm not sure if 400+ was being sarcastic or not (helpful staff at evosport is an oxymoron), but those directions won't help.

As you said, it's in the corner on the driver's side. I've done this several times myself, and I'm a complete idiot, so it's really not too hard.

For the most part, all you do is loosen the clamps on the plastic cover like you've already done, then just start unplugging the sh*t that's attached until the unit can be removed. I think your biggest problem is getting over your fear of *******g something up.
Reply
Old May 4, 2010 | 07:10 PM
  #6  
jroush06's Avatar
Thread Starter
Newbie
 
Joined: May 2010
Posts: 10
Likes: 0
2003 Mercedes C32 AMG
Just pulled out the ECU, it worked like a charm. Thanks everyone for the help.

Now I gotta find a company to send it off to, to have it fixed!
Reply
Old May 4, 2010 | 08:30 PM
  #7  
loungn14's Avatar
SPONSOR
 
Joined: Jul 2007
Posts: 5,459
Likes: 152
From: Houston/ Austin /Toronto / UAE / Minneapolis / Orlando /Cincinnati
Eurocharged Performance ML63 and TT lambo
Originally Posted by jroush06
Just pulled out the ECU, it worked like a charm. Thanks everyone for the help.

Now I gotta find a company to send it off to, to have it fixed!
uh, whats the problem with it? We have seen tons of ECU's and its very rare to have a bad one.

Did you send it somewhere for a tune and have you checked to make sure there are no bent pins?
Reply
Old May 4, 2010 | 08:38 PM
  #8  
jroush06's Avatar
Thread Starter
Newbie
 
Joined: May 2010
Posts: 10
Likes: 0
2003 Mercedes C32 AMG
Originally Posted by loungn14
uh, whats the problem with it? We have seen tons of ECU's and its very rare to have a bad one.

Did you send it somewhere for a tune and have you checked to make sure there are no bent pins?

Well I was gone for a few days, the car sat. I came home, started it up and the "ESP, visit workshop" message was flashing on the dash screen. The car was idling extremely high and in some cases up to 4500-5000rps unless i shifted it into drive or just shut the car off.

When I put the car into drive, it would just sputter really bad and not go over 10mph.

I took it to the local mercedes dealer. That hooked up the plugger to see what kind of codes it was throwing.

The code he read back to me was a engine control unit code, he stated that the ecu was causing or regulating too many volts and it was killing the car's performance, etc etc. End result, the tech told me I needed to buy a new ecu asap. (Im pretty lost when it comes to these cars) Pulled the ecu today to send it off to a company in florida to have it checked out. I have never had the car tuned or messed with the ecu prior to this situation. Unless the previous owner did so.

And thats where im at now with the whole situation. Any thoughts?
Reply
MB World Stories

The Best of Mercedes & AMG

story-0

6 Mercedes Models That Did NOT Age Well (But Are Somehow Still Cool)

 Verdad Gallardo
story-1

Manual Mercedes? 6 Times Sindelfingen Let Drivers Have All The Fun

 Verdad Gallardo
story-2

Mercedes SLR McLaren 722 S Is Extremely Rare Example Modified by McLaren

 Verdad Gallardo
story-3

8 Classic Boxy Mercedes Designs That Have Aged Like Fine Wine

 Verdad Gallardo
story-4

Flawlessly Restored Mercedes 190E Evo II Heads to Auction

 Verdad Gallardo
story-5

Electric Mercedes C-Class Unveiled: 11 Things You Need to Know

 Verdad Gallardo
story-6

Mercedes EQS Gets A Major Update: Everything You Need to Know

 Verdad Gallardo
story-7

5 Underrated Mercedes-Benz Models That Don't Get the Love They Deserve

 Verdad Gallardo
story-8

Mercedes 300D Has Pushed Well Past 1 Million Miles and It Ain't Stopping

 Verdad Gallardo
story-9

10 Most Reliable Mercedes-Benz Models You Can Buy Used

 Verdad Gallardo
Old May 4, 2010 | 10:41 PM
  #9  
400+ HPC32 AMG's Avatar
Member
 
Joined: Feb 2010
Posts: 81
Likes: 0
2002 C32 amg
[quote=jroush06;4059863]Just pulled out the ECU, it worked like a charm. Thanks everyone for the help.

looks like i did help him tommy
Reply
Old May 4, 2010 | 10:44 PM
  #10  
jroush06's Avatar
Thread Starter
Newbie
 
Joined: May 2010
Posts: 10
Likes: 0
2003 Mercedes C32 AMG
[quote=400+ HPC32 AMG;4060176]
Originally Posted by jroush06
Just pulled out the ECU, it worked like a charm. Thanks everyone for the help.

looks like i did help him tommy

The pics from the instructions you sent were for the wrong car or atleast the wrong engine bay. My ecu is on the driver side, that one was for the passenger side, so I dunno. But regardless it still helped me from what I was trying to do and it worked!! . I appreciate the help man.
Reply
Old May 4, 2010 | 11:07 PM
  #11  
tommy's Avatar
Out Of Control!!
 
Joined: Nov 2001
Posts: 10,067
Likes: 11
From: Westwood, NJ
2004 Civic Si. FWD for the Win!
[QUOTE=400+ HPC32 AMG;4060176]
Originally Posted by jroush06
Just pulled out the ECU, it worked like a charm. Thanks everyone for the help.

looks like i did help him tommy
If you say so.
Reply
Old May 4, 2010 | 11:26 PM
  #12  
francoisisp's Avatar
Senior Member
 
Joined: Oct 2007
Posts: 369
Likes: 17
From: SO CAL
AMG
Originally Posted by jroush06
Just pulled out the ECU, it worked like a charm. Thanks everyone for the help.

Now I gotta find a company to send it off to, to have it fixed!
which company did you send the ecu to ? i would like to know incase something of tha sort ever happen to me. feel me ?
Reply
Old May 5, 2010 | 12:14 AM
  #13  
02C32guy's Avatar
Super Member
 
Joined: Apr 2009
Posts: 852
Likes: 4
From: DE
2005 E55
I routinely see used ECU's for our cars on ebay for a few hundred bucks. If one shows up, that would probably be a better option than the stealership.
Reply
Old May 5, 2010 | 09:06 AM
  #14  
jroush06's Avatar
Thread Starter
Newbie
 
Joined: May 2010
Posts: 10
Likes: 0
2003 Mercedes C32 AMG
Originally Posted by francoisisp
which company did you send the ecu to ? i would like to know incase something of tha sort ever happen to me. feel me ?

The company I am most likely going to go with this company.

www.enginecontrolunits.com

I spoke with the guy on the phone, seemed pretty knowlegeable about mercedes ECUs and how they work. $500 (if its fixable) and a three-four day turn around.
Reply
Old May 5, 2010 | 06:19 PM
  #15  
jroush06's Avatar
Thread Starter
Newbie
 
Joined: May 2010
Posts: 10
Likes: 0
2003 Mercedes C32 AMG
Originally Posted by 02C32guy
I routinely see used ECU's for our cars on ebay for a few hundred bucks. If one shows up, that would probably be a better option than the stealership.

That is true, but im assuming you have to get the keys reprogrammed when you get a whole different ECU?
Reply

Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 


You have already rated this thread Rating: Thread Rating: 0 votes,  average.


All times are GMT -4. The time now is 05:02 AM.

story-0
6 Mercedes Models That Did NOT Age Well (But Are Somehow Still Cool)

Slideshow: Not every Mercedes design becomes timeless, some feel stuck in the era they came from.

By Verdad Gallardo | 2026-05-12 18:09:07


VIEW MORE
story-1
Manual Mercedes? 6 Times Sindelfingen Let Drivers Have All The Fun

Slideshow: Yes, Mercedes built manual cars, and some of them are far more interesting than you'd expect.

By Verdad Gallardo | 2026-05-02 12:36:58


VIEW MORE
story-2
Mercedes SLR McLaren 722 S Is Extremely Rare Example Modified by McLaren

Slideshow: A one-of-one U.S.-spec Mercedes-Benz SLR McLaren Roadster became even rarer after a factory-backed transformation at McLaren's headquarters.

By Verdad Gallardo | 2026-04-29 11:19:28


VIEW MORE
story-3
8 Classic Boxy Mercedes Designs That Have Aged Like Fine Wine

Slideshow: Before curves took over, Mercedes mastered the art of the straight line, and some of those shapes still look right today.

By Verdad Gallardo | 2026-04-25 12:05:49


VIEW MORE
story-4
Flawlessly Restored Mercedes 190E Evo II Heads to Auction

Slideshow: The 190E Evolution II shows how a homologation necessity became a six-figure collector icon.

By Verdad Gallardo | 2026-04-22 17:53:47


VIEW MORE
story-5
Electric Mercedes C-Class Unveiled: 11 Things You Need to Know

Slideshow: Mercedes is turning one of its core nameplates electric, and the details show just how serious this shift is.

By Verdad Gallardo | 2026-04-21 13:58:06


VIEW MORE
story-6
Mercedes EQS Gets A Major Update: Everything You Need to Know

Slideshow: Faster charging, longer range, and a controversial steer-by-wire system define the latest evolution of Mercedes-Benz EQS.

By Verdad Gallardo | 2026-04-15 10:35:34


VIEW MORE
story-7
5 Underrated Mercedes-Benz Models That Don't Get the Love They Deserve

Slideshow: These overlooked Mercedes-Benz models never got the spotlight, but they quietly delivered more than most remember.

By Verdad Gallardo | 2026-04-13 19:35:45


VIEW MORE
story-8
Mercedes 300D Has Pushed Well Past 1 Million Miles and It Ain't Stopping

Slideshow: A well-used 1991 Mercedes-Benz 300D with more than one million miles is now looking for a new owner, and it still appears ready for more.

By Verdad Gallardo | 2026-04-10 10:05:15


VIEW MORE
story-9
10 Most Reliable Mercedes-Benz Models You Can Buy Used

Slideshow: From bulletproof sedans to surprisingly tough SUVs, these Mercedes models proved that the three-pointed star can go the distance.

By Verdad Gallardo | 2026-04-08 09:55:49


VIEW MORE