C43 Rocking Back and Forth
MBWorld Fanatic!
Joined: Jun 2012
Posts: 1,229
Likes: 188
From: Toronto
2022 E53 AMG
I can do this for fun. :-) It will happen easier if your tranny is not 70 degree warm. The trannies normal running temperature is 73 C Degree.
If you push your foot down and the trannie is warm, it will not do that unless you push and raise your foot to fast before it changes gears.
If you push your foot down and the trannie is warm, it will not do that unless you push and raise your foot to fast before it changes gears.
Member
Joined: Mar 2017
Posts: 207
Likes: 27
From: Austin, Tx
2018 C63S Coupe
Solution: Take your foot off the gas, shift to 2nd or put the car in neutral..
In Texas we call this "The Bull"
Lol I had experienced this also but was familiar with the this happening before from my previous sports cars that I owned that were manual transmission. I'm surprised that drivers actually think this is an issue with the transmission and not their foot. It's a short gear, it will happen in any vehicle.
In Texas we call this "The Bull"
Lol I had experienced this also but was familiar with the this happening before from my previous sports cars that I owned that were manual transmission. I'm surprised that drivers actually think this is an issue with the transmission and not their foot. It's a short gear, it will happen in any vehicle.
Last edited by MBzW205; Mar 2, 2017 at 04:23 PM.
Member
Joined: Feb 2017
Posts: 105
Likes: 11
From: Houston
2017 AMG C43
I've had the bucking happen once. Not a good feeling when traffic may be bearing down in you. Easily overcome with the paddle.
I've also noticed that in S+, my transmission doesn't shift to 1st at a stop in every situation until moving forward again.
I've also noticed that in S+, my transmission doesn't shift to 1st at a stop in every situation until moving forward again.
Super Member
Joined: Nov 2015
Posts: 721
Likes: 74
From: NYC
2016 c450 / 2016 VW Jetta 1.8t / 2006 Wrangler X
Solution: Take your foot off the gas, shift to 2nd or put the car in neutral..
In Texas we call this "The Bull"
Lol I had experienced this also but was familiar with the this happening before from my previous sports cars that I owned that were manual transmission. I'm surprised that drivers actually think this is an issue with the transmission and not their foot. It's a short gear, it will happen in any vehicle.
In Texas we call this "The Bull"
Lol I had experienced this also but was familiar with the this happening before from my previous sports cars that I owned that were manual transmission. I'm surprised that drivers actually think this is an issue with the transmission and not their foot. It's a short gear, it will happen in any vehicle.
Member
Joined: Sep 2016
Posts: 131
Likes: 20
From: Newtown, CT
BMW328ix, AMG C43
Car stopped. Step on the gas. Car accelerates really fast for a split second. Your foot stays behind the gas pedal, due to a thing called "inertia". Gas pedal responds very fast, resulting in really fast deceleration of the car, together with the pedal. Your foot, which is moving forward at this point, presses the pedal again, and the cycle repeats a few times.
It can happen with a truck too, in the first gear, due to gear ratios.
This happens when/if you are trying to accelerate smoothly (why the hell would you do that?) in sport+. This is not a Toyota!
Anyways, keep your foot firmly on the gas pedal and it won't happen.
It can happen with a truck too, in the first gear, due to gear ratios.
This happens when/if you are trying to accelerate smoothly (why the hell would you do that?) in sport+. This is not a Toyota!
Anyways, keep your foot firmly on the gas pedal and it won't happen.
Member
Joined: Mar 2017
Posts: 106
Likes: 12
From: Central New York
2017 AMG C43
I'm glad this thread got bumped as I had not seen it previously but am experiencing the same issue
Something very similar happens in mine as well in Sport+ but I just figured it was me not being used to the vehicle
I've only had the car for 5 days, took delivery last Friday so just at the very beginning of learning about it. I have not even experimented with paddle shifting yet, still getting familiar with driving my new car
When in Sport+ mode driving between 1-10 miles an hour there is a lot of bucking and jerking around, especially when I'm unsure of exactly what it is I'm doing as far as acceleration/deceleration (navigating an intersection for instance, where I'm gauging/merging with other traffic)
Another example is driving through a gas station parking lot looking for which pump to use and travelling at 5 mph
Now that I've found this thread, I'll pay more attention the next few days and report back
I do think some of it is driver related (as another poster mentioned), these cars do have a lot of power and seem to have very close/tight ratios in the low gears
Something very similar happens in mine as well in Sport+ but I just figured it was me not being used to the vehicle
I've only had the car for 5 days, took delivery last Friday so just at the very beginning of learning about it. I have not even experimented with paddle shifting yet, still getting familiar with driving my new car
When in Sport+ mode driving between 1-10 miles an hour there is a lot of bucking and jerking around, especially when I'm unsure of exactly what it is I'm doing as far as acceleration/deceleration (navigating an intersection for instance, where I'm gauging/merging with other traffic)
Another example is driving through a gas station parking lot looking for which pump to use and travelling at 5 mph
Now that I've found this thread, I'll pay more attention the next few days and report back
I do think some of it is driver related (as another poster mentioned), these cars do have a lot of power and seem to have very close/tight ratios in the low gears
Last edited by Jimmy C43; Mar 29, 2017 at 10:50 PM.
Member
Joined: Feb 2017
Posts: 105
Likes: 11
From: Houston
2017 AMG C43
I haven't had the issue of the transmission jerking while not at a stop, but as mentioned in my thread, I think I have isolated the issue coming out of a stop to the car not shifting into 1st gear. I will be getting some other stuff done soon and will be asking service about this.
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Member
Joined: Feb 2017
Posts: 105
Likes: 11
From: Houston
2017 AMG C43
Car stopped. Step on the gas. Car accelerates really fast for a split second. Your foot stays behind the gas pedal, due to a thing called "inertia". Gas pedal responds very fast, resulting in really fast deceleration of the car, together with the pedal. Your foot, which is moving forward at this point, presses the pedal again, and the cycle repeats a few times.
It can happen with a truck too, in the first gear, due to gear ratios.
This happens when/if you are trying to accelerate smoothly (why the hell would you do that?) in sport+. This is not a Toyota!
Anyways, keep your foot firmly on the gas pedal and it won't happen.
It can happen with a truck too, in the first gear, due to gear ratios.
This happens when/if you are trying to accelerate smoothly (why the hell would you do that?) in sport+. This is not a Toyota!
Anyways, keep your foot firmly on the gas pedal and it won't happen.
Senior Member
Joined: Nov 2016
Posts: 352
Likes: 48
From: in a van down by the river...
2020 C43 sedan(hers), 2021 Porsche 992 TurboS(his)
I was aware of this thread and so far in 2,000 kms it has happened only once to me.
While turning left at a busy intersection. Car still moving but a brief moment of hesitation judging how fast oncoming traffic was coming... do I go.. should I wait... I decide hesitantly, ok go and the bucking started. I backed out and smoothly applied gas. It was an eye opener...
In S+ the throttle pedal mapping is very sensitive (overly sensitive?) to any movement.
While turning left at a busy intersection. Car still moving but a brief moment of hesitation judging how fast oncoming traffic was coming... do I go.. should I wait... I decide hesitantly, ok go and the bucking started. I backed out and smoothly applied gas. It was an eye opener...
In S+ the throttle pedal mapping is very sensitive (overly sensitive?) to any movement.
Member
Joined: Jan 2017
Posts: 80
Likes: 5
From: Toronto
2023 CLS53 AMG, 2020 GLE450 (Returned), 2017 C43 AMG Coupe (Returned)
Do you guys get that feeling that the engine runs smoother (less back and forth) as soon as the oil temperature hits +50 to 60 degrees C?
Senior Member
Joined: Nov 2016
Posts: 352
Likes: 48
From: in a van down by the river...
2020 C43 sedan(hers), 2021 Porsche 992 TurboS(his)
Yes probably it does, but that certainly wasn't the case when I experienced it. It was 45 minutes into a drive, so engine and all fluids were at operating temps for some time.
Member
Joined: Sep 2010
Posts: 74
Likes: 10
From: Florida
2017 C43 Coupe
The outdoor temperature here is always 23-29 C, 75-85F. My car gets above 60C not long after I start driving. I've had it buck after an hour of driving. It also does not like speed bumps....3 or 4 speed bumps in a row in a residential neighborhood, with the slowing and then giving gas and the transmission going between 1st and 2nd gear does not work well with this transmission.
Member
Joined: Jan 2017
Posts: 80
Likes: 5
From: Toronto
2023 CLS53 AMG, 2020 GLE450 (Returned), 2017 C43 AMG Coupe (Returned)
I haven't experienced this whole rocking back and forth thingy yet then...but then again I've had my car for little more than a month!
Senior Member
Joined: Nov 2016
Posts: 352
Likes: 48
From: in a van down by the river...
2020 C43 sedan(hers), 2021 Porsche 992 TurboS(his)
Consider yourself lucky. It's only a matter of time.Only does this in Sport + from a stand still or slight coasting from 1st gear.
Member
Joined: Jan 2017
Posts: 80
Likes: 5
From: Toronto
2023 CLS53 AMG, 2020 GLE450 (Returned), 2017 C43 AMG Coupe (Returned)
Junior Member
Joined: May 2017
Posts: 18
Likes: 1
2019 G63
Anyone had this resolved? I'm having this issue but in a GLC43. Sport+ will occasionally produce hard rocking/shaking. This has occurred from a complete stop and from a near stop (rolling up to a light and accelerating).
This is not be mistaken with a hard shift. I have driven a GLA45 almost exclusively in Sport+ for the past year and never had this happen or even anything remotely like this. I also used to own a Macan Turbo which I drove in sport+ and never once had this type of bucking occur. This is not a characteristic and is downright dangerous when it happens as it forces you to either jolt around (picture mechanical bull) or decelerate and switch into comfort before being able to resume acceleration.
I'm taking my car into the dealership later this week but if someone has had this looked into and had any kind of resolution then please chime in.
Thank you.
This is not be mistaken with a hard shift. I have driven a GLA45 almost exclusively in Sport+ for the past year and never had this happen or even anything remotely like this. I also used to own a Macan Turbo which I drove in sport+ and never once had this type of bucking occur. This is not a characteristic and is downright dangerous when it happens as it forces you to either jolt around (picture mechanical bull) or decelerate and switch into comfort before being able to resume acceleration.
I'm taking my car into the dealership later this week but if someone has had this looked into and had any kind of resolution then please chime in.
Thank you.
Newbie
Joined: May 2017
Posts: 2
Likes: 0
c43
Anyone had this resolved? I'm having this issue but in a GLC43. Sport+ will occasionally produce hard rocking/shaking. This has occurred from a complete stop and from a near stop (rolling up to a light and accelerating).
This is not be mistaken with a hard shift. I have driven a GLA45 almost exclusively in Sport+ for the past year and never had this happen or even anything remotely like this. I also used to own a Macan Turbo which I drove in sport+ and never once had this type of bucking occur. This is not a characteristic and is downright dangerous when it happens as it forces you to either jolt around (picture mechanical bull) or decelerate and switch into comfort before being able to resume acceleration.
I'm taking my car into the dealership later this week but if someone has had this looked into and had any kind of resolution then please chime in.
Thank you.
This is not be mistaken with a hard shift. I have driven a GLA45 almost exclusively in Sport+ for the past year and never had this happen or even anything remotely like this. I also used to own a Macan Turbo which I drove in sport+ and never once had this type of bucking occur. This is not a characteristic and is downright dangerous when it happens as it forces you to either jolt around (picture mechanical bull) or decelerate and switch into comfort before being able to resume acceleration.
I'm taking my car into the dealership later this week but if someone has had this looked into and had any kind of resolution then please chime in.
Thank you.
Super Member
Joined: Jul 2015
Posts: 698
Likes: 81
From: Philly and NYC
2019 E63S & 2022 X7 M50
Not sure if you guys have noticed this one: at times there is also a moment of dead pedal when you try to accelerate after decelerating. I've had this problem occur near intersections and when attempting lane changes and its just as scary because you can stomp on the gas and for 1/2 of a second, there is completely no response. A lot can happen in that 1/2 second.
Super Member
Joined: Nov 2015
Posts: 721
Likes: 74
From: NYC
2016 c450 / 2016 VW Jetta 1.8t / 2006 Wrangler X
Not sure if you guys have noticed this one: at times there is also a moment of dead pedal when you try to accelerate after decelerating. I've had this problem occur near intersections and when attempting lane changes and its just as scary because you can stomp on the gas and for 1/2 of a second, there is completely no response. A lot can happen in that 1/2 second.
I find when coming to a hard stop, and then flooring it, it feels like the engine is dead. No power, no noise, no building boost, just flat for a second, followed by a more gradual power delivery than usual. It's a bit disconcerting, and probably a safety nanny for the trannie.
Super Member
Joined: Jul 2015
Posts: 698
Likes: 81
From: Philly and NYC
2019 E63S & 2022 X7 M50
Originally Posted by cenzo86
yup
I find when coming to a hard stop, and then flooring it, it feels like the engine is dead. No power, no noise, no building boost, just flat for a second, followed by a more gradual power delivery than usual. It's a bit disconcerting, and probably a safety nanny for the trannie.
I find when coming to a hard stop, and then flooring it, it feels like the engine is dead. No power, no noise, no building boost, just flat for a second, followed by a more gradual power delivery than usual. It's a bit disconcerting, and probably a safety nanny for the trannie.
Senior Member
Joined: Jun 2016
Posts: 307
Likes: 27
From: USA
2017 C43 sedan
Like other posters, I noticed the behavior once or twice driving in S+ just after I got the car. I assume I adapted my throttle mashing fairly quickly because for the next five months I didn't notice the behavior. Also none In the month since my eurocharged tune.
Junior Member
Joined: Mar 2017
Posts: 48
Likes: 5
Lexus IS350; BMW 330i
This has happened to me but only when I am in sports+ mode and travelling slowly through the neighbourhood. It is interesting that when you are just cruising in sports+ mode that it would drop it down to first. I was always taught when driving a manual car to never put the gear into first when slowing down unless you come to a complete stop. I suspect that the transmission has trouble dealing with the low speed in first gear and if you do something unexpected (i.e. accelerate when it thinks you are slowing to a complete stop) it puts it on a bad footing.
Do I think this is a major issue, not really as it only occurs in low speeds and only when you are trying to baby the throttle, not like you would be taking a corner at 10-15 kms per hour and gently accelerate after apex
An easy way to recreate this is change from comfort to sport+ when you are rolling along or starting to accelerate at an intersection. Happen to me a couple of times when I wanted to impress some ladies walking down the street and wanted to pop the exhaust...Serves me for being an idiot...Talk about embarrassing!
Do I think this is a major issue, not really as it only occurs in low speeds and only when you are trying to baby the throttle, not like you would be taking a corner at 10-15 kms per hour and gently accelerate after apex
An easy way to recreate this is change from comfort to sport+ when you are rolling along or starting to accelerate at an intersection. Happen to me a couple of times when I wanted to impress some ladies walking down the street and wanted to pop the exhaust...Serves me for being an idiot...Talk about embarrassing!
Super Member
Joined: Oct 2011
Posts: 690
Likes: 84
From: GA
X3 M40i
I was thinking the same thing.
This has happened to me but only when I am in sports+ mode and travelling slowly through the neighbourhood. It is interesting that when you are just cruising in sports+ mode that it would drop it down to first. I was always taught when driving a manual car to never put the gear into first when slowing down unless you come to a complete stop. I suspect that the transmission has trouble dealing with the low speed in first gear and if you do something unexpected (i.e. accelerate when it thinks you are slowing to a complete stop) it puts it on a bad footing.
Do I think this is a major issue, not really as it only occurs in low speeds and only when you are trying to baby the throttle, not like you would be taking a corner at 10-15 kms per hour and gently accelerate after apex
An easy way to recreate this is change from comfort to sport+ when you are rolling along or starting to accelerate at an intersection. Happen to me a couple of times when I wanted to impress some ladies walking down the street and wanted to pop the exhaust...Serves me for being an idiot...Talk about embarrassing!
Do I think this is a major issue, not really as it only occurs in low speeds and only when you are trying to baby the throttle, not like you would be taking a corner at 10-15 kms per hour and gently accelerate after apex
An easy way to recreate this is change from comfort to sport+ when you are rolling along or starting to accelerate at an intersection. Happen to me a couple of times when I wanted to impress some ladies walking down the street and wanted to pop the exhaust...Serves me for being an idiot...Talk about embarrassing!
Newbie
Joined: May 2017
Posts: 7
Likes: 1
2010 Audi S4; 2014 Audi Q5 TDI; 2013 BMW S1000RR
