C32 AMG, C55 AMG (W203) 2001 - 2007

Glycol Contamination

Thread Tools
 
Search this Thread
 
Rate Thread
 
Old Aug 6, 2009 | 02:49 PM
  #1  
barueba's Avatar
Thread Starter
Newbie
 
Joined: Aug 2009
Posts: 3
Likes: 0
2003 C32
Glycol Contamination

Hi folks I have a 2003 C32, and just came down with the dreaded glycol contamination issue. I am pretty new to the site, and this was super helpful to help diagose the issue. Measurement came back as 200 mg/l, so not on the high end (at one point, I think 400 mg/l called for replacement of both torque converter and tranny). Tech at the dealer replaced the Valeo radiator with a new Valeo dated 10/2008, flushed ATF from torque converter and tranny and jerking is gone.

My question is - are there any known issues with torque converter and transmission after the fix described? Tech followed the latest service bulletin, and since jerking is gone, he did not replace torque converter or tranny. Does anyone know if the glycol contamination would have caused enough damage that I should push for torque converter and/or transmission replacement at this point? Car is still under extended warranty, but I am afraid I may have issues once warranty expires (which is soon). What have been your experiences and what you'd recommend? TIA.
Reply
Old Aug 6, 2009 | 02:55 PM
  #2  
loudandheard's Avatar
MBWorld Fanatic!
 
Joined: Mar 2007
Posts: 1,948
Likes: 3
From: Houston, TX
C32/C55 AMG
You should have gotten the other brand of radiator, since the valeo is the known radiator to cause such a problem. If you are not having any problems with your transmission, you should be fine, but if you can convice them to get a new one, I would definitely do it.
Reply
Old Aug 6, 2009 | 04:04 PM
  #3  
pointman's Avatar
MBWorld Fanatic!
 
Joined: Jun 2003
Posts: 4,705
Likes: 2
From: nj
a car that can't do the throttle reset.
Originally Posted by loudandheard
You should have gotten the other brand of radiator, since the valeo is the known radiator to cause such a problem. If you are not having any problems with your transmission, you should be fine, but if you can convice them to get a new one, I would definitely do it.
I thought just to early model of Valeo caused issues and the updated one was fine?
Reply
Old Aug 6, 2009 | 04:17 PM
  #4  
jturkel's Avatar
MBWorld Fanatic!
 
Joined: Oct 2006
Posts: 4,856
Likes: 4
02 C32 AMG
Originally Posted by pointman
I thought just to early model of Valeo caused issues and the updated one was fine?
yes. you are correct.
Reply
Old Aug 7, 2009 | 01:24 AM
  #5  
pointman's Avatar
MBWorld Fanatic!
 
Joined: Jun 2003
Posts: 4,705
Likes: 2
From: nj
a car that can't do the throttle reset.
Ahh good to know. Thanks.
Reply
Old Aug 8, 2009 | 10:40 PM
  #6  
barueba's Avatar
Thread Starter
Newbie
 
Joined: Aug 2009
Posts: 3
Likes: 0
2003 C32
The dealer told me the new Valeo would not have the same issue, and even mentioned that they'll do another glycol test within the next 12 months. I was not able to push for t/c or tranny replacement, for now will just monitor if jerkiness comes back. If anyone has had only radiator replaced and flush done, I'd appreciate any feedback on whether that cured the jerkiness problem long term. I am really concerned about long-term effects of glycol on t/c and tranny, and possible issues down the road.

I've dealt with MBUSA twice and both times I have not been satisfied with the resolution...not very effective way to create goodwill or loyalty from customers...
Reply
Old Aug 8, 2009 | 11:00 PM
  #7  
moosejaw's Avatar
MBWorld Fanatic!
 
Joined: Nov 2005
Posts: 5,692
Likes: 5
none
take it up with a MBUSA district rep or offer to pay the difference to use the better radiator
Reply
Old Aug 9, 2009 | 02:03 AM
  #8  
Dingleberry's Avatar
Super Member
 
Joined: Aug 2009
Posts: 983
Likes: 2
From: USA
Marsaydees
how do you tell the radiators apart?
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 Aug 10, 2009 | 02:28 AM
  #9  
barueba's Avatar
Thread Starter
Newbie
 
Joined: Aug 2009
Posts: 3
Likes: 0
2003 C32
I can see the valeo label on top of the radiator. It should be under the flap that has the mobil 1 sticker.
Reply
Old Jan 14, 2010 | 12:07 PM
  #10  
Camalfi's Avatar
Junior Member
 
Joined: Oct 2009
Posts: 18
Likes: 0
2003 c32 amg
Originally Posted by barueba
I can see the valeo label on top of the radiator. It should be under the flap that has the mobil 1 sticker.
I have a 2003 C32 purchased in dec 02 assembled in nov 02. Looked for the Valeo label under teh mobile 1 sticker could not find it do I have to remove anything?
Reply
Old Jan 14, 2010 | 01:45 PM
  #11  
Dingleberry's Avatar
Super Member
 
Joined: Aug 2009
Posts: 983
Likes: 2
From: USA
Marsaydees
Originally Posted by Camalfi
I have a 2003 C32 purchased in dec 02 assembled in nov 02. Looked for the Valeo label under teh mobile 1 sticker could not find it do I have to remove anything?
you can tell if it's a valeo by the crimping at the ends of the radiator...
Reply
Old Jan 15, 2010 | 12:42 AM
  #12  
francoisisp's Avatar
Senior Member
 
Joined: Oct 2007
Posts: 369
Likes: 17
From: SO CAL
AMG
Originally Posted by Dingleberry
you can tell if it's a valeo by the crimping at the ends of the radiator...
what do you need by the crimping at theend of the radiator, im also interested in this since I happen to have a 2003 manufactured late 2002 aswell plus i just got a faulty trasmition gear ration code.
Reply
Old Jan 20, 2010 | 02:07 PM
  #13  
Camalfi's Avatar
Junior Member
 
Joined: Oct 2009
Posts: 18
Likes: 0
2003 c32 amg
Originally Posted by Dingleberry
you can tell if it's a valeo by the crimping at the ends of the radiator...
Can you take a picture. Looked but did not see any crimping
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 08:24 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