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Merecedes E320 -2001 Model-75k miles as of 09/08/2010
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Discussion Starter #1
Guys:

I got the transmission on my E320 (2001 model with 74K miles) repaired by a Merc Authorized reputed service place about 2 months ago as I had noticed some very minor slippage in the first couple of minutes after starting the car and never later (only about twice in 2 months). While I am now totally convinced that the repairs were absolutely unnecessary & there was nothing wrong with the trans. at all, but it's all in the past now.

Anyways they opened the transmission, replaced the "one way roller clutch" and a few other minor parts. After the repair I have noticed the following issues:

a) Transmission not engaging when shifting from reverse to forward and when it engages it does with a loud thud & a jerk.

b) The car “stalls or “just does not respond for a few seconds” when I press on the gas pedal suddenly to increase speed as in merging (NOT all the way down, but exert some extra pressure) or even during start.

While both the above issues have happened in perfectly normal conditions more frequently in the weeks after the repair, over the last 2-3 weeks I have noticed they occur only under wet & slippery conditions. But, as I use the car very little I cannot say with surety that it does not happen under normal conditions. I have always ensured that the ESP was on.

I took the car in to try to demonstrate the problem to their mechanics on a wet day, but couldn't simulate the problem. They checked the error codes and did not find any. They believe that it may be due to slippage at the tires. But my tires are good and properly inflated.

Can you tell me what might be going on and if indeed that was a trans. issue as I very strongly suspect?

I greatly appreciate any help in this regard.
 

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1999 E55, 2001 E320, 1990 560 SEC, 2004 ML350, 2001 ML55, 1995 S500, 1998 SL500, 2010 E550 Sport zoo
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7,035 Posts
On the tranny performance, I would recommend you do your own tranny reset - search the forum as the reset for ECU/tranny takes about 4 minutes, tops, and report back if that changed the shifting condition.

The original defaults are "agressive" for performance, and then the computer degrades them as time goes by if not frequently called for. It is not uncommon for owners to "reset" every couple of weeks, especially if their cars are not driven daily.

On your "forward-to-reverse" - unlear if you are talking about a occasional prolem, or if that occurs all the time. If it's all-the-time, then couldn't the dealer duplicate that problem ?

I believe you are now out-of-extra-warranty, but the dealer did the work, you should bug their butt to take care of you - like checking the fluid level, again, in the shop with tranny at correct temperature.
 

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Merecedes E320 -2001 Model-75k miles as of 09/08/2010
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26 Posts
Discussion Starter #6
. It is not uncommon for owners to "reset" every couple of weeks, especially if their cars are not driven daily.

On your "forward-to-reverse" - unlear if you are talking about a occasional prolem, or if that occurs all the time. If it's all-the-time, then couldn't the dealer duplicate that problem ?

I believe you are now out-of-extra-warranty, but the dealer did the work, you should bug their butt to take care of you - like checking the fluid level, again, in the shop with tranny at correct temperature.

a) My car may not be driven daily, but I use it at least 5 days a week on an average. Do I still need to do the reset?

b) Forward-to-reverse: As I mentioned it used to happen more often in the first 4-5 weeks after repair, but over the past 2-3 weeks I have noticed it ONLY on wet days.

Thx.
 

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1999 E55, 2001 E320, 1990 560 SEC, 2004 ML350, 2001 ML55, 1995 S500, 1998 SL500, 2010 E550 Sport zoo
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7,035 Posts
I think you might be sensitized a bit about your tranny - and would recommend getting to basics.

Do the tranny reset, and that shound change the characterisitics of that tranny that have been degraded.

With the reset, pound that accelerator like a lead foot for a couple of days - be bold and aggressive and shake that car out.

Then, after a week of bold, take the car to the dealer for any complaints and for free recheck of the tranny fluid level at correct temp.
 
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