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This is the report they gave me in spanish...it only had 6k miles on the clock at the time being.
English translation:
Type of Claim:
The client reports that the vehicle experiences a "jerking or headshake" sensation when reducing speeds and downshifting from D5 to D4. Additionally, when the vehicle is moving and accelerating, it makes a "thumping noise" in the transmission.
Description of the Claim:
The car was brought in for a mechanical diagnostic.
Cause:
Upon inspection at the workshop, no active fault codes were found. A road test was performed with the client, during which the reported conditions were identified. Data from the vehicle was extracted to review consultations with the factory support team.
Final Evaluation of the Claim / Solution:
An update (presumably software) was performed, and the transmission fluid was checked and found to be at the correct temperature. After road tests, it was confirmed that the condition had improved, but not entirely. Therefore, a reconfiguration of the transmission control unit was performed. After further road tests, the reported conditions were completely corrected.
They gave me just a simple word document with no specifics...
cars running fine for now.
Originally Posted by Angelitopstar27
This is the report they gave me in spanish...it only had 6k miles on the clock at the time being.
Originally Posted by wildta
English translation:
Type of Claim:
The client reports that the vehicle experiences a "jerking or headshake" sensation when reducing speeds and downshifting from D5 to D4. Additionally, when the vehicle is moving and accelerating, it makes a "thumping noise" in the transmission.
Description of the Claim:
The car was brought in for a mechanical diagnostic.
Cause:
Upon inspection at the workshop, no active fault codes were found. A road test was performed with the client, during which the reported conditions were identified. Data from the vehicle was extracted to review consultations with the factory support team.
Final Evaluation of the Claim / Solution:
An update (presumably software) was performed, and the transmission fluid was checked and found to be at the correct temperature. After road tests, it was confirmed that the condition had improved, but not entirely. Therefore, a reconfiguration of the transmission control unit was performed. After further road tests, the reported conditions were completely corrected.
I had the same issue. Very hard downshifts, particularly when braking and when downshifting from 4>3. The dealer updated software using Xentry and it’s 99% gone. My W222 S Class does the same thing, but not nearly as harsh. I’ve had multiple things done to resolve but it still isn’t perfect like my W221 was.
The update dealer did to GLS virtually solves it - good luck! Here’s a pic of the notes during repair.
Sounds like new cars have same problems like old cars. Check out my post as i had similar issue with tranny jerking from 5 to 4th gear.
Yours was done before the new procedure.
The 2024 procedure for Stand Still Adaptation seems to fix the situation. Mine's been great since it was applied.
The 2024 procedure is new and easier to perform. Therefore shops are more likely to do it. I don't think they were well compensated before, partly because the results were unreliable, and because it took two technicians, on the road, to do the task.
In either case, it needs to be repeated until there's confirmation. Two to five times it seems.
Now it's reliable and effective.
Interesting coming across this..ive got a 25 gls 450 that has been rough since day 1. 9500 miles on the clock took it in for service A and was given a brand new 26 loaner, mechanically identical, that shifts much better.. asked them to dig into the tranmission for me
Unrelated, I think the suspension MUCH more compliant on this 26 as well, and again, identical, mechanically, to my knowledge. Tire pressures same, as well .
I had the same Jerky downshift from 5 to 4 and found this Thread. Took the car to the dealer and showed them the “Xentry Tips” document - they did do the software update and recalibrated the settings. The car drives now like it should. Thanks to all who posted their solution which really helped.
I had the same Jerky downshift from 5 to 4 and found this Thread. Took the car to the dealer and showed them the “Xentry Tips” document - they did do the software update and recalibrated the settings. The car drives now like it should. Thanks to all who posted their solution which really helped.
thanks bud - which document are you referring to? a service summary of some kind?
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