GLC Class (X254) Produced 2023+

Downshift jerking 2023 GLC 300 4MATIC

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Old 07-02-2024, 11:59 AM
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2023 GLC 300
Exclamation Downshift jerking 2023 GLC 300 4MATIC

My vehicle has just turned 1 years old and I had brought it to the dealer for its first service. I mentioned to them that at times, the driver's side window switch does the opposite of what it's suppose to do (goes down when it should go up). Then I mentioned that at times, it jerks a bit when it is downshifting. They told me that they would have to keep the vehicle for a few days and flush out the fluids in it to reset it. I brought it in last Thursday and they told me that they have opened a claim with Mercedes Benz about it and the foreman is working with them to resolve this issue. I hope this isn't a bigger problem at hand, although they didn't seem to worried about it. Has anyone else come into this issue? Overall, the vehicle runs great, just jerks a bit when downshifting at lower speeds. TIA (P.S. I never had any lights displayed on the odometer for this issue)
Old 07-02-2024, 02:37 PM
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PFL205.064 with M276.823 (Oil pump solenoid defeated)
Originally Posted by Whamidy
My vehicle has just turned 1 years old and I had brought it to the dealer for its first service. I mentioned to them that at times, the driver's side window switch does the opposite of what it's suppose to do (goes down when it should go up). Then I mentioned that at times, it jerks a bit when it is downshifting. They told me that they would have to keep the vehicle for a few days and flush out the fluids in it to reset it. I brought it in last Thursday and they told me that they have opened a claim with Mercedes Benz about it and the foreman is working with them to resolve this issue. I hope this isn't a bigger problem at hand, although they didn't seem to worried about it. Has anyone else come into this issue? Overall, the vehicle runs great, just jerks a bit when downshifting at lower speeds. TIA (P.S. I never had any lights displayed on the odometer for this issue)
I wonder if it has to do with auto start/stop, X254 has a mild hybrid system (48V), try disabling auto start/stop and see if it helps.
Old Today, 06:55 AM
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GLC300 4Matic
Originally Posted by Whamidy
My vehicle has just turned 1 years old and I had brought it to the dealer for its first service. I mentioned to them that at times, the driver's side window switch does the opposite of what it's suppose to do (goes down when it should go up). Then I mentioned that at times, it jerks a bit when it is downshifting. They told me that they would have to keep the vehicle for a few days and flush out the fluids in it to reset it. I brought it in last Thursday and they told me that they have opened a claim with Mercedes Benz about it and the foreman is working with them to resolve this issue. I hope this isn't a bigger problem at hand, although they didn't seem too worried about it. Has anyone else come into this issue? Overall, the vehicle runs great, just jerks a bit when downshifting at lower speeds. TIA (P.S. I never had any lights displayed on the odometer for this issue)
I have a 2016 GLC 4Matic that I purchased in 2019 as a CPO from the dealer. It does that on occasion. Not all the time, and I haven't figured out the trigger, but it only happens when braking to a stop. I have never had any other issues with the transmission. I normally disable the Start/Stop feature when I drive, so that is not the cause. My car has approximately 45k miles on it.

Last edited by ducatijocki; Today at 06:57 AM.

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