Trans delay 2-1 shift coming to a stop
Thread Starter
MBWorld Fanatic!
Joined: Dec 2008
Posts: 2,396
Likes: 38
From: Bay Area, CA
2007 SL55 AMG
Trans delay 2-1 shift coming to a stop
I've noticed recently that when I come to a stop (driving normal) the car delays in downshifting into 1st gear. Sometimes I get to a stop sign, stop, then when I start to hit the gas(or right before I hit the gas), I feel it kick back into 1st gear. It doesn't happen all the time but has been happening much more often recently. I also get a slightly firmer 1st to 2nd gear shift at times. Otherwise, the car is fine at 500mi. before 150k.
I did a soft adaptation reset (gas pedal kickdown trick) and it did not improve anything.
I first experienced this problem at a much smaller extent when I was in Arizona idling in 110 degree heat 1.5 years ago. I did a transmission service after I got back from Arizona and it had been fine until now.
Few things to note:
- The car is an 02 E55
- 17k mi since last trans service (pan drop, filter, trans connector, 4 qts MB 134 ATF replaced.)
- Trans level is perfect when I checked last night
- Fluid has turned into a gold color, but definitely not black at all.
- Engine mounts replaced at end of 2010, trans mount was recently replaced as preventative maintenance.
The only theories I have come up with so far is transmission fluid deterioration, flex discs worn, or a solenoid or speed sensor inside the transmission is faulty. I will check the flex discs tomorrow.
This member posted in 09 about his problem and I believe I'm experiencing the exact issues: https://mbworld.org/forums/mercedes-...0-722-6-a.html
Any ideas anyone? Thanks in advance!
I did a soft adaptation reset (gas pedal kickdown trick) and it did not improve anything.
I first experienced this problem at a much smaller extent when I was in Arizona idling in 110 degree heat 1.5 years ago. I did a transmission service after I got back from Arizona and it had been fine until now.
Few things to note:
- The car is an 02 E55
- 17k mi since last trans service (pan drop, filter, trans connector, 4 qts MB 134 ATF replaced.)
- Trans level is perfect when I checked last night
- Fluid has turned into a gold color, but definitely not black at all.
- Engine mounts replaced at end of 2010, trans mount was recently replaced as preventative maintenance.
The only theories I have come up with so far is transmission fluid deterioration, flex discs worn, or a solenoid or speed sensor inside the transmission is faulty. I will check the flex discs tomorrow.
This member posted in 09 about his problem and I believe I'm experiencing the exact issues: https://mbworld.org/forums/mercedes-...0-722-6-a.html
Any ideas anyone? Thanks in advance!
Last edited by desired_speeds; Feb 5, 2013 at 01:07 AM.
Newbie
Joined: Oct 2010
Posts: 9
Likes: 0
1991 420SEL Siren Red, 1986 560SEC ECE White, 2000 E55
Had this issue lately and thought the same as the reply above but when I checked the fluid level it was just a touch low. Added what would be a coke can full and problem gone. These transmissions are SO sensitive.
Senior Member
Joined: Jan 2010
Posts: 301
Likes: 23
1997 E300D
I have this "lurching problem" in the winter when pulling away from a stop, for the first few miles. once things warm up it never happens and it doesn't happen in the summer. I would guess it has something to do with the viscosity of the ATF, but it is just a guess.
Senior Member
Joined: Jan 2010
Posts: 301
Likes: 23
1997 E300D
No. It couldn't mean anything to anybody. On my first stop or two the transmission does not seem to be in low until I press on the accelerator to go. The transmission then shifts down into first and lurches forward. Once it warms up it always shifts down into low before I start forward. This sounds to me like what the OP was seeing although in his case it may not remedy itself when the car warms up.
that could mean anything to anybody, what are you actually talking about?
Senior Member
Joined: Jan 2010
Posts: 301
Likes: 23
1997 E300D
Yes, but it only happens in the stops made in the first few miles of the day. When the car is warm it never happens and it never happens in the summer. It has done this for the five years or so that I have owned it. It is not something I would feel a need to fix, but it would be interesting to know why it happens. I just consider it to be an idiosyncrasy of the car.
Senior Member
Joined: Jun 2008
Posts: 341
Likes: 6
From: Chicago, IL
2001 E430, 2002 ML55
hmmm this happened to me today. Coming to a stop sign, make a stop, then go to accelerate and then the tranny shifts into firsts after I've started going in 2nd.
Today is a nice 5 degrees F...but like stated, once the car warms up, all is well again.
I've just accepted that my E430 is cranky after a cold start and should just be let to warm up with slow driving around the neighborhood.
Today is a nice 5 degrees F...but like stated, once the car warms up, all is well again.
I've just accepted that my E430 is cranky after a cold start and should just be let to warm up with slow driving around the neighborhood.
