GLC43 jerking when accelerating after near stop
Newbie
Joined: Oct 2010
Posts: 2
Likes: 0
From: New York, Suffolk County
2021 glc amd 43
You won't want to hear this, but I blame your driving style. You said the following, "We bought the AMG GLC 43 based on a number of factors, one of which was the impressive acceleration and sound of Sport+ mode." Well, if you are in S+ mode and make a right turn, then mash that accelerator. You won't have any bucking, you'll only have "impressive acceleration and sound of Sport+ mode"
Now, if you think that taking a corner at full throttle is too much, then right before the corner, move it down to S mode. You can give it partial throttle with no bucking. I am constantly switching drive modes to suite the situation. Thats what they're for. There's only one way to use S+ at low speeds, gas on or gas off. At freeway speeds or on mountain roads, S+ works fine. For full throttle drag launches it works fine. But they didn't design that mode for partial throttle at slow speeds.
I agree the software mapping for S+ could be improved. But imo its not worth the hassle of fighting with Mercedes. I would rather adjust my driving style to the car and enjoy driving it.
Now, if you think that taking a corner at full throttle is too much, then right before the corner, move it down to S mode. You can give it partial throttle with no bucking. I am constantly switching drive modes to suite the situation. Thats what they're for. There's only one way to use S+ at low speeds, gas on or gas off. At freeway speeds or on mountain roads, S+ works fine. For full throttle drag launches it works fine. But they didn't design that mode for partial throttle at slow speeds.
I agree the software mapping for S+ could be improved. But imo its not worth the hassle of fighting with Mercedes. I would rather adjust my driving style to the car and enjoy driving it.
Member
Joined: Mar 2009
Posts: 127
Likes: 41
From: GA (winters), PA (summers)
08 GLK350, 10 E350, 12 R350, 14 CLA250, 18 E400 Coupe, 20 GLE580, 21 GLC43, 21 GLC300, 24 GLE53 SUV
Shifting when coming to stop
My 21 GLC43 Coupe shifts best when set to Manual shift mode, i.e. not induced by paddle shift. As such in S+ and coming to a stop, I can creep along in 2nd until I come to a complete stop, at which point she drops abruptly but not jerky into 1st. OR I can launch smoothly from 2nd, per California Stop. If I’m NOT in Manual mode, the shift from 2nd to 1st is rough unless I let off the brake pedal just before it shifts down into 1st. Even smoother if I paddle down shift into1st as soon as I see the 2nd gear indication (via HUD). I’m a happy camper with this technique. YMMV.
Last edited by jonpom; Jun 28, 2021 at 05:16 PM.
Member
Joined: Jan 2019
Posts: 222
Likes: 39
GLC43 SUV
Recreating this thread from the GLC Class (X253) forum.
To recap: This thread is intended for GLC43 / GLC63 owners whose vehicles exhibit a jerking / bucking behavior when applying partial throttle from a low speed. From the owners that have commented so far, it seems this behavior occurs most while the car is in Sport+ mode.
One owner (ajgraham) reported a successful fix via his dealers service department:
UPDATE 8/13/2018: An update from ajgraham. The previously mentioned fix doesn't fully address the issue:
To recap: This thread is intended for GLC43 / GLC63 owners whose vehicles exhibit a jerking / bucking behavior when applying partial throttle from a low speed. From the owners that have commented so far, it seems this behavior occurs most while the car is in Sport+ mode.
One owner (ajgraham) reported a successful fix via his dealers service department:
UPDATE 8/13/2018: An update from ajgraham. The previously mentioned fix doesn't fully address the issue:
mine does it only in s+ from an almost stop to full throttle. It bucks like a person learning manual. Let off the gas for a sec and punch it.
Newbie
Joined: Jun 2022
Posts: 1
Likes: 0
2020 GLC 43 coupe
2020 Glc43 coupe does the Same!
I've been having the same jerking issue as I slowly drive out from my driveway, I also always drive my car on comfort mode. This is my second time at the dealership and they technician cannot seem to duplicate the issue, and my advisor doesn't seem helpful. It feels like they want me to fix it myself and duplicate it myself
Anyone get this jerking behavior when slowly braking to a stop? It happens when releasing the brake, too, but it's intermittent and hard to reproduce when I want to make it happen to show my dealer.
I've had this since day 1 on my GLC43. I did get the dealer to update the transmission software, but that largely did nothing. I feel like it's a real problem, but have largely adapted my driving around it.
I've had this since day 1 on my GLC43. I did get the dealer to update the transmission software, but that largely did nothing. I feel like it's a real problem, but have largely adapted my driving around it.
Senior Member
Joined: Nov 2021
Posts: 289
Likes: 69
From: Japan
Mercedes Benz AMG GLC 63s
Mine is the same year and model although C253. This has happened to me several times now just recently over the past few weeks or so. Primarily for me this occurred when I’m in any mode from sport towards race mode.
I did a race start the other day just to test if the hesitation was pronounced and it was. The car bogged down, hesitated from 2nd to 3rd quite dramatically that I actually backed off just as it changed to 3rd. I didn’t want to exacerbate any potential damage to the gearbox so I’ve not done that since whilst mainly driving in comfort mode.
Not sure what to do but one thing I do have, is a really great and trustworthy dealership here in Japan with service 2nd to none. If there is a fix, I’m positive they will help as much as they can.
I did a race start the other day just to test if the hesitation was pronounced and it was. The car bogged down, hesitated from 2nd to 3rd quite dramatically that I actually backed off just as it changed to 3rd. I didn’t want to exacerbate any potential damage to the gearbox so I’ve not done that since whilst mainly driving in comfort mode.
Not sure what to do but one thing I do have, is a really great and trustworthy dealership here in Japan with service 2nd to none. If there is a fix, I’m positive they will help as much as they can.
2018 GLC63S coupe; happened tonight for the first time. Car has maybe 350 miles on it. Turned the car on, put it in sport, pulled out of a parking space and put it into sport+. Jerked around for a bit and then put it back into sport and it went away.
will try again tomorrow.
will try again tomorrow.
Newbie
Joined: Jun 2023
Posts: 5
Likes: 0
From: Georgia, Tbilisi
W204 250D 4matic
W205. 250D 4 matic. 7g tronic. 2016YOM
Hello everyone.
guys I need your help.
Just got used car C250d 4 matic 7G tronic.
I have noticed cick only on first gear and only when Im releasing brake pedal for example on trafick light. It not kicking when im puting it on drive mode from the start but after Ill stop with brakes and then releasing it. It cicks. I went to MB dealer. They did diagnostic of transmission and nothing is there. No errors. After I asked them to do diagnostic while driving and next thing appeared . When I stoped the car with brakes and car completely stoped, trasmission disconecting out of engine or whatever it is conecting them together.
dealer told me that there is nothing they can do. Even if ill change gearbox there is no warranty that they will fix it.
please advise somethin. Please tell me what to do or to whom to ask.
guys I need your help.
Just got used car C250d 4 matic 7G tronic.
I have noticed cick only on first gear and only when Im releasing brake pedal for example on trafick light. It not kicking when im puting it on drive mode from the start but after Ill stop with brakes and then releasing it. It cicks. I went to MB dealer. They did diagnostic of transmission and nothing is there. No errors. After I asked them to do diagnostic while driving and next thing appeared . When I stoped the car with brakes and car completely stoped, trasmission disconecting out of engine or whatever it is conecting them together.
dealer told me that there is nothing they can do. Even if ill change gearbox there is no warranty that they will fix it.
please advise somethin. Please tell me what to do or to whom to ask.
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Newbie
Joined: Jan 2024
Posts: 5
Likes: 1
From: San diego
2017 Glc43
Why would I have to to switch back and forth. That is ridiculous. I have driven a stick for many years until l had a problem with my feet. Anyway I now own a new Corvette and it is always in sport +. The car drives great whether I go fast slow or in between. Never had I had a car that bucked and such like my amg 43. It's not driver error. That's for sure. Been driving over 40 years and driving many cars. Sure...I can be careful accelerating and whatever but why should I have to. If this can't be remedied I will be dumping it for a great loss since it only has 1k on the odometer. Luckily I can afford to take the loss. The car I test drove was the 4 cylinder and it drove nice as far as the transmission goes. So I'm already looking at other cars to drive. The F Pace SVR is what I will look into next.
PSA, I'm not directing my response to anyone but everyone describing the bucking. I've been laughing in my underwear. This is NOT an automatic car. If you bounce off the limiter in a corner or bog out with too low rpm or generally in the wrong gear when you come to a stop....you're going to feel the car going through the gears for you or cutting power because you didn't shift up. Sport+ gives the driver control which car people like. Stop giving MBZ a bad name and drive it like a manual in sport+ or keep it in eco lol
