Yes, that's what it's supposed to do. It doesn't. When I took delivery of the car, the transmission worked fine. Not perfect, but the clunky, jerky downshifts weren't there. Then a few months into ownership they show up. Never tracked the car, rarely drove it aggressively, and have never been super aggressive with downshifts when slowing or coming to a stop. It was not my driving style the transmission learned. It was being smooth that it unlearned all on its own.

But for the sake of argument, let's say the few times I charged on-ramps triggered something in the adaptations. In that case, upshifts should be quicker, right? Nope - the upshifts have never changed. But even if they had changed, resetting the adaptations should theoretically take both the upshift and downshift logic back to where they were when I took delivery, right? Not the case. The downshifts were just as clunky after the resets.

The truly ironic thing about all this is that I bought my Audi earlier this year knowing I was buying one of the most clumsy stop-and-go transmissions on the market (7-speed S Tronic). Even with the allroad's gearbox tripping over itself at times, I'd still grab the Audi's key fob ten times out of ten.

 

When I took mine in, I told them I was getting an occasional hard 5 - 4 downshift. The service manager asked me to take a ride with a mechanic to demonstrate the problem. The mechanic called back, said no need for a test drive, he knew exactly what to do. The car was ready a few hours later after they did the standstill adaptation. At no point did I get any pushback from the dealership (Sarasota Mercedes).

 

Just want to clarify that standstill adaptation is different from the adaptation reset. Please do try requesting a standstill adaptation which involves a brake torque process and reapplying new shift points.

 

My foreman said it takes like 5min extra time beyond what he normally does for me with each visit which is updating any and all modules. They did mine for free with the recall fix, along with several other module updates.

 

Yeah, I get that. Already mentioned it to my SA when I scheduled my upcoming service. He had no idea what I was talking about, but said he'd look into it. We'll see what happens in a few weeks.

 

Maybe print this post to show him:
https://mbworld.org/forums/gle-class...ml#post9047442

Good luck hope it fixes your shifting issues. 🤞🏽

 

FYI, my posting in Post #96 was generated using the simulation mode for XENTRY. However, when hooking up both of my cars to XENTRY, neither give me the option of doing a Standstill adaptation. I may need to get my software updated. So, anyone going to the dealer and asking about doing a Standstill adaptation, be aware that they may say they can't do it. The video in Post #97 does say the Standstill adaptation is a new method (around 10 seconds into the video). The video was posted originally in July 2016, so I'm not sure when the new method took place. It also says in the video that the TCM software must be up to date. Again, if your dealer looks at you like you're nuts, gently explain that the Standstill adaptation is only about 8 years old and to make sure your software is up to date.

 

Thank you for clarifying this.

 

I had my car serviced at a dealership and mentioned them about rough downshifts and following is what they did . I specifically asked them to do standstill adaptation.

”CONNECT BATTERY TENDER, RAN SDS TEST. NO RELATING CODES PRESENT. NO TRANSMISSION UPDATES, BUT ENGINE AND 48V SYSTEMS HAVE UPDATES.
PERFORM ENGINE AND 48V SYSTEM UPDATES. CLEAR CODES,PERFORM STAND STILL ADAPTATION AND TORQUE CONVERTER LOCK UP CLUTCH 3 TIMES SUCCESSFULLY. TEST DRIVE 5 MILES,
THEN ADVISOR TEST DRIVE 10 MILES. VEHICLE IS NOW SHIFTING
AS DESIGNED.”

unfortunately , the problem still persists.The previous dealer had just told me that it was supposed to do like that. not sure on this but it is annoying.This dealer atleast performed the adaptation. If I was braking weird, I should have been able to see the same issue on loaner as well but did not.

As a loaner I drove a 2024 GLE 450 and did not noticed this issue.

so the standstill adaptation did not work in my case 😕


MERCEDES REALLY NEEDS TO DIVE DEEP INTO THIS ISSUE AND IDENTIFY A FIX .

 

As mentioned, I cannot do the Standstill adaptation on either of my transmissions. The function does not appear in XENTRY for my cars. However, I can clear my learned shift adaptations and relearn everything. I have not done that yet.

I was viewing my options using LAUNCH Creader Elite 2.0 BENZ since I didn't have my XENTRY set up at the moment. I wanted to see if I could reset the shift settings using LAUNCH -- I could but canceled the selection. When using LAUNCH and backing out of a selection, I get a message that the control module I am looking at is "resetting". I'm not sure if that is a dummy message or there is actually a command issued to reset the module. Well, since doing that, my downshifts are smoother, but my upshifts from 2nd to 3rd are now a little more noticeable when in Sport (S) mode and not so much as when in Economy (E) mode.

It has been suggested to reset the shift settings (and ONLY shift) and then taking a gentle drive for about 50 miles, making sure all the gears are exercised. I am not suggesting anyone try this, but thought I would mention it here since we are on the topic. Remember, I have a 722.9 7G+ transmission and do not know what a reset might do to a 9G tranny.

 

I am curious as well but I too think it is a dummy message, for example, if I scan the TCM and erase any codes or view live data, backing up it will say clear codes and reset module? I assume reset means restart module and scan again.

 

That said, I did reset the learned values and comparing with XENTRY (that my friend had that bought a subscription with Peter), it is the same thing. Unlike the floor the accelerator reset. I am not sure if that is true for all MB vehicles with this scanner but at least with a 2017 W205, that is the behaviour. So your mileage may vary.

 

Sorry to hear the standstill adaptation didn't work for you, I would try this standstill adaptation again but with a different dealership, as mentioned earlier, it takes time and experience to get it right, the foreman or technician has to have experience with this standstill adaptation otherwise they could do a standstill adaptation but not do it correctly, last resort will be forced adaptation.

 

Will need Peter to dive in a little more with if resetting the adaptation via XENTRY and/or with the reset learning values with Launch will reset any standstill adaptation or forced adaptation. If anyone has experience, let us know please.

 

So, you actually did reset the shift values? What was the result immediately and after 100 miles?

 

This must be a new function available to the 9-speeds. It's the first I have seen and explains what IPR means. Selecting Customer Complaint and selecting Continue, you get a notice that an enhanced online version is available. Selecting Continue again lets you select the complaints. It then takes you to the online model, which is where I cannot proceed.

 

Selecting the Y3/8n4 transmission module and proceeding, XENTRY takes you through the traditional screens. The 9-speed does have the Standstill adaptation function.






Conditions met




Standstill adaptation running

 

I wonder if this is the valve flushing referred to.

 

There were definitely differences but it then learn my behaviour again and back to the same old in 2000 miles.

 

I'm also noticing improved shifting after a couple days of driving. I must have inadvertently reset the learned shift values when exiting the function on my LAUNCH scanner. While there was no harm done, that is one of the "dangers" of using aftermarket scanners vs. XENTRY, and why @BenzNinja hates them.

 

FWIW...

We were at the dealership's service department today with my wife GLC and I mentioned the GLE downshifting issues to the Asst Service Mgr. He said there is a software update coming at the end of the year. He also said any improvement coming from the standstill "band-aid" will only last for 1-2k miles. Sounded like he knew exactly what the situation is so I have hope. Good luck.

 

Thanks forum member JettaRed for posting these as always, very helpful : )

 

I see, I understand that.

 

Good to hear there is an update, there was a recall for a transmission software which affected shifting but that recall was mainly because of some stalling (or maybe remembered it wrong, not exactly to address shift quality) https://mbworld.org/forums/gls-class...gle-450-a.html

Will be interesting if this new update is a recall or a TSB.

The standstill adaptation does work for quite a few members here despite what your dealership is claiming, although it is not a 100% fix, it improves it and I have read many reporting the issue not coming back after quite a few miles so there is that. Your mileage may vary for sure, especially dependent on if the technician does the adaptation properly.

 

Hmmm, interesting perspective since the "band-aid" is a coded procedure in XENTRY. It will be interesting to see if that is the experience others will have. Honestly, if that fixes shifting for a few thousand miles, it would definitely be worth getting XENTRY and doing it yourself as needed.