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The transmission constantly learns and adjusts. For some driving styles, it seems like it picks suboptimal profiles. Standstill adaptation, in my understanding, resets the learned data and replaces it with some "known good" values appropriate for your transmission. Having that said, it doesn't mean it stops learning once it's complete. So, that's likely why the dealer called it a "band aid" that lasts 1-2k miles, unless you adjust your driving style.
As for using Xentry outside of a proper shop (dealers or independents who pay for the license), keep in mind, you're using cracked software, potentially modified VCI firmware, likely on a Chinese hardware clone. If something gets messed up while you're doing it on an in-warranty car, you may end up paying for your repairs.
The transmission constantly learns and adjusts. For some driving styles, it seems like it picks suboptimal profiles. Standstill adaptation, in my understanding, resets the learned data and replaces it with some "known good" values appropriate for your transmission. Having that said, it doesn't mean it stops learning once it's complete. So, that's likely why the dealer called it a "band aid" that lasts 1-2k miles, unless you adjust your driving style.
As for using Xentry outside of a proper shop (dealers or independents who pay for the license), keep in mind, you're using cracked software, potentially modified VCI firmware, likely on a Chinese hardware clone. If something gets messed up while you're doing it on an in-warranty car, you may end up paying for your repairs.
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.
This sounds like it's related to the TSB I posted earlier in this thread. Post 72.
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.
Sorry guys if I've caused some confusion. "band-aid" is a description I came up with to describe what the ASM categorized as something less than a 100% solution. Good luck.
2015 SL400 (M276 Turbo), 2014 C350 Sport (M276 NA), 2004 SL500 (M113), 2004 Audi TT225 (BEA)
Several days ago, I did a shift reset on my 7G+ transmission. The Standstill adaptation is not a function available on the 7G+. At the time, I was just viewing the ability to do a transmission reset of the shift values using my LAUNCH Creader Elite 2.0 BENZ. I did not proceed with resetting the shift values, but when exiting the screen the LAUNCH stated it was resetting the control module, but it always says that.
I noticed a slight improvement in shifting right away, but it was still a little harsh in the upshifts from 1>2 and 2>3. Now, several days later and a bunch of start and stop cycles, the transmission is shifting buttery smooth in any of the modes.
I'm not suggesting anyone try this because I do not know if the 9G transmission will behave the same way, but thought I would share my experience on this topic.
Harsh downshift combined with jerking at slow speeds
With my 2021 GLE450 (just under 40k miles) I experienced the abrupt downshift issue which was tolerable. Then for the past few months I experienced jerking when travelling on upward inclines at low speed (<30MPH) - this is without the gear changing. They had previously tried software updates and adaptation. After a further week in the dealership and backward and forward with MB Technical they are now replacing the gearbox and torque converter at MB's expense. Parts will take 4-6 weeks to arrive.
2015 SL400 (M276 Turbo), 2014 C350 Sport (M276 NA), 2004 SL500 (M113), 2004 Audi TT225 (BEA)
Originally Posted by rupnic
With my 2021 GLE450 (just under 40k miles) I experienced the abrupt downshift issue ... they are now replacing the gearbox and torque converter at MB's expense.
Is the car still under warranty? How is it you got them to replace the tranny?
Is the car still under warranty? How is it you got them to replace the tranny?
Yes - it is under a 100% service + maintenance plan that covers 5 years or 100kms - whichever comes first. They were discussing just replacing the valve body but settled on the entire unit. At this stage the pan (incl. single use bolts etc.) is out so they have provided me a rental. Hoping the dealer can do a good job of the transmission swap as I don't think they have done many swaps of the 9G box with the hybrid drive in it thus far.
With my 2021 GLE450 (just under 40k miles) I experienced the abrupt downshift issue which was tolerable. Then for the past few months I experienced jerking when travelling on upward inclines at low speed (<30MPH) - this is without the gear changing. They had previously tried software updates and adaptation. After a further week in the dealership and backward and forward with MB Technical they are now replacing the gearbox and torque converter at MB's expense. Parts will take 4-6 weeks to arrive.
Originally Posted by JettaRed
Is the car still under warranty? How is it you got them to replace the tranny?
Originally Posted by rupnic
Yes - it is under a 100% service + maintenance plan that covers 5 years or 100kms - whichever comes first. They were discussing just replacing the valve body but settled on the entire unit. At this stage the pan (incl. single use bolts etc.) is out so they have provided me a rental. Hoping the dealer can do a good job of the transmission swap as I don't think they have done many swaps of the 9G box with the hybrid drive in it thus far.
Ya valve body seems to be the main culprit to the issues you are facing but a full transmission swap is better (sounds better , it is not a reman right?
I spoke with my local dealership and they are fully aware of this problem (specifically harsh downshift from 5th to 4th gear) and are expecting a software update in quarter 4 of 2024. So hopefully any day now. My dealer put me on a call list to let me know as soon as its available, I would suggest you do the same.
I spoke with my local dealership and they are fully aware of this problem (specifically harsh downshift from 5th to 4th gear) and are expecting a software update in quarter 4 of 2024. So hopefully any day now. My dealer put me on a call list to let me know as soon as its available, I would suggest you do the same.
Does the harsh shift happens all the time or only during certain circumstances, also how different is it when transmission fluid is cold or when at operating temperature. Although I don't think you can view the transmission fluid temperature in the car only with a scanner I guess say warm as in after driving it for 45-60 minutes.
2015 SL400 (M276 Turbo), 2014 C350 Sport (M276 NA), 2004 SL500 (M113), 2004 Audi TT225 (BEA)
Originally Posted by W205C43PFL
Does the harsh shift happens all the time or only during certain circumstances, also how different is it when transmission fluid is cold or when at operating temperature. Although I don't think you can view the transmission fluid temperature in the car only with a scanner I guess say warm as in after driving it for 45-60 minutes.
Sometimes you can. This was added to my SL400 (non-AMG) by @BenzNinja .
Last edited by JettaRed; Nov 12, 2024 at 02:24 PM.
Does the harsh shift happens all the time or only during certain circumstances, also how different is it when transmission fluid is cold or when at operating temperature. Although I don't think you can view the transmission fluid temperature in the car only with a scanner I guess say warm as in after driving it for 45-60 minutes.
My car does it all the time when downshifting from 5th gear to 4th gear. Depending on different circumstances (speed, braking, ect) you can feel it mare at times though.
2015 SL400 (M276 Turbo), 2014 C350 Sport (M276 NA), 2004 SL500 (M113), 2004 Audi TT225 (BEA)
Interestingly, I had @BenzNinja do a transmission software update a month or so ago because I was having harsh downshifts from 4 --> 3 and 3 --> 2. For some reason, the update didn't work as expected with my transmission, so he restored the original file (which is the benefit of having him do it -- he always makes a backup first). In the process, apparently my transmission shift settings were reset and after a few miles shifting was as smooth as ever (meaning, smooth). So, I conclude if shifting has become harsh, the learned settings may need to be reset, OR the file needs to be reloaded. I don't know enough to know if learned settings are stored in a separate "file" or not, but certainly something was reset in the process.
Hmmm. I'm not sure. We tried the relearning process and it didn't help on my car. Apparently this is a problem with the GLE's. Specifically the downshift between 5th and 4th gears. It's annoying so I'm glad Mercedes recognizes the problem and is offering the software update.
2015 SL400 (M276 Turbo), 2014 C350 Sport (M276 NA), 2004 SL500 (M113), 2004 Audi TT225 (BEA)
Originally Posted by DTG1653
Hmmm. I'm not sure. We tried the relearning process and it didn't help on my car. Apparently this is a problem with the GLE's. Specifically the downshift between 5th and 4th gears. It's annoying so I'm glad Mercedes recognizes the problem and its offering the software update.
Good point. I forget to mention that I have a 7G+ transmission while you are probably dealing with the 9G.
Sometimes you can. This was added to my SL400 (non-AMG) by @BenzNinja .
Originally Posted by DTG1653
My car does it all the time when downshifting from 5th gear to 4th gear. Depending on different circumstances (speed, braking, ect) you can feel it mare at times though.
Originally Posted by JettaRed
Interestingly, I had @BenzNinja do a transmission software update a month or so ago because I was having harsh downshifts from 4 --> 3 and 3 --> 2. For some reason, the update didn't work as expected with my transmission, so he restored the original file (which is the benefit of having him do it -- he always makes a backup first). In the process, apparently my transmission shift settings were reset and after a few miles shifting was as smooth as ever (meaning, smooth). So, I conclude if shifting has become harsh, the learned settings may need to be reset, OR the file needs to be reloaded. I don't know enough to know if learned settings are stored in a separate "file" or not, but certainly something was reset in the process.
I see but to clarify I meant from stock when it was sold.
I’m having this exact issue with my 450 GLS. The dealership has told me the software fix is in the works but not ready yet. It’s so frustrating- it’s made me considering getting rid of the car, which is saying a lot!
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, it is not a reman right?
