E500 Transmission question - Urgent!!
Member
Joined: Apr 2006
Posts: 97
Likes: 0
From: Silicon Valley
2005 E500 AMG Sport
In my '03 E500 (25k miles) I started noticing a strange vibration and shift pattern during slow acceleration at around 30mph. I could see the rpm's rise and fall, as you would with a slipping clutch. It got worse, so I took it in for service. The repair recommendation is a new transmission control module. I hope this isn't some kind of band-aid repair.
I would have the problem when I was braking to a stop. You could feel the vehicle downshifting. The car would jerk forward really bad.
It sucks that there is problems like this with the transmission. I may just purchase an extended warranty because of problems like this!
Out Of Control!!
Joined: Jul 2003
Posts: 15,901
Likes: 4,630
From: North Scottsdale, AZ
'71 Pinto
P-B-27.60/61f NOV06
Guys, PM your email address and I'll forward a copy of this DTB so you can better familiarize yourself with the diagnostic procedure involved. Depending on the steps taken already you may, or may not be entitled to a new transmission. At the very least you will have a MBUSA document to better support your claim to the area MBUSA SPOM who is responsible for making the final decision.
Last edited by konigstiger; Mar 15, 2007 at 03:03 PM.
Newbie
Joined: Mar 2007
Posts: 3
Likes: 0
update
The service consultant called and said they installed the control unit, but a road test confirmed that the problem was not fixed. Then they sampled the trans fluid and found a low % of ethyln glycol in the trans. apparently something in the radiator failed, allowing coolant to mix with trans fluid, which is also cooled in the radiator. they recommend replacing the radiator, followed by 3x flushing of both coolant system and transmission. They stated that since the problem was caught very early there should be no long-term problem with the trans.
Out Of Control!!
Joined: Jul 2003
Posts: 15,901
Likes: 4,630
From: North Scottsdale, AZ
'71 Pinto
P-B-27.55/50f MAR06
All 2003 211 models with either 5G or 7G transmission -- Humming/buzzing noises or noticeable harsh engagement during acceleration between engine speeds of 1200-2500 rpm caused by incomplete adaptation of the torque converter, ECU software or glycol contamination of the automatic transmission fluid. Not intermittent and produced at all times.
Member
Joined: Apr 2006
Posts: 97
Likes: 0
From: Silicon Valley
2005 E500 AMG Sport
I think Mercedes is aware of this problem with the 7G transmission, but sometimes tries to get out of replacing it...
