Car lurches when moving forward very slowly like in a tight parking situation
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GLE 580
Is there programming/coding or an adaptation that could fix this? I've had transmission and throttle reset and it definitely reduced the jolts when inching along in tight spots but it's still very reproducible at that 1-2mph range while braking and then letting off of the brake.
Last edited by wildta; Jan 31, 2024 at 06:17 PM.
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From: Colorado
'21 AMG53 wDPP & ARC, 19 GLC300 - Former-03 C240,2 ML BlueTecs,20 GLE450 E-ABC,15 Cayenne D,17 Macan
I never noticed anything of this nature. My garage is pretty tight, a few inches on both sides, so, I’m just rolling into it at 1-2mph, nothing unexpected at all, same for parking at public garages / parking spots or backing up to connect a trailer. We have different ISG version(Gen 2 on 2024) but it would be weird if earlier ones behaved much different. Like, it should not be pushing you forward abruptly if you barely touch the pedal.
What I do is pushing the throttle ever so slightly and dropping it right away, moving the foot to the brake pedal just in case. Never had to use it but a bit hard to imagine somebody overshooting by a foot, like you have to control how the vehicle moves by being ready to apply the brakes.
What I do is pushing the throttle ever so slightly and dropping it right away, moving the foot to the brake pedal just in case. Never had to use it but a bit hard to imagine somebody overshooting by a foot, like you have to control how the vehicle moves by being ready to apply the brakes.
My '21 does none of the lurching or even a sensitive gas pedal. I easily edge / creep forward or back with my '21. I have to, because my garage is full, or I want park, or hitch a trailer. I do all those.
That's why I suggested there was something wrong with cars that lurch.
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GLE 580
BTW, no issues in reverse. Probably because Auto start stop doesn't engage at all in reverse at least that I'm aware of.
Update: Auto start stop does not engage when in reverse, just tested.
Update: Auto start stop does not engage when in reverse, just tested.
Last edited by wildta; Jan 28, 2024 at 06:01 PM.
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From: Colorado
'21 AMG53 wDPP & ARC, 19 GLC300 - Former-03 C240,2 ML BlueTecs,20 GLE450 E-ABC,15 Cayenne D,17 Macan
I wouldn't think gear selection would matter.
It would be difficult to test if you couldn't verify a state of charge of the 48 volt battery.
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GLE 580
It depends upon the state of charge of the battery. If the battery needs a charge then the engine won't shut off. Or it will restart when the battery reaches a certain point of charge.
I wouldn't think gear selection would matter.
It would be difficult to test if you couldn't verify a state of charge of the 48 volt battery.
I wouldn't think gear selection would matter.
It would be difficult to test if you couldn't verify a state of charge of the 48 volt battery.
So yesterday I was trying to repeat the issue and could only get the feeling once or twice while doing a 2hr roundtrip drive. The jolt(s) might have occurred around 3mph which is faster than the tight parking situations as before. My recent adaptation resets of the throttle and transmission must have changed the occurrence of it; the resets definitely reduced the occurrences of it. I'll have to keep testing to figure out exactly how to reproduce it now after these resets because prior to the resets it was very easy to reproduce.
Last edited by wildta; Jan 29, 2024 at 02:57 PM.
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2021 GLE 580
Wife hit neighbor’s condo
Has anyone else experienced a lurch/forward jerk like movement in situations where you're in drive and you might be in a parking situation where you only want to move the car in very small distances, like inches at a time? I think maybe it's a weird transmission negotiation issue of the vehicle switching between the 48v system (GLE 580 MY20), engine, and auto star/stop maybe? It could be quite troublesome if you're in a tight parallel parking situation where you only want to move a few inches and instead it lurches/jolts forward like 2-6".
I'm experiencing this in my tight garage where I need to park my car at a very specific line otherwise I can't close the garage door in the back and don't have room in the front to walk around the car. While parking in my garage, I'll put my front bumper camera on and inch along until the bumper reaches my specific line, all of a sudden this lurch/forward jerk makes me overshoot it. It's really annoying because I then have to backup.
I'm experiencing this in my tight garage where I need to park my car at a very specific line otherwise I can't close the garage door in the back and don't have room in the front to walk around the car. While parking in my garage, I'll put my front bumper camera on and inch along until the bumper reaches my specific line, all of a sudden this lurch/forward jerk makes me overshoot it. It's really annoying because I then have to backup.
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GLE 580
Drove the car just now with the foreman and it was easily reproducible at around 4mph we could see the Auto start stop green light engage and disengage and the jolt that came with it. Prior to the adaptation, this occurred at slow parking speeds like in my garage but now it happens at 4mph.
Last edited by wildta; Jan 31, 2024 at 02:25 PM.
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From: MA
MY2024 GLE 450
Sorry but was the lurch just a little bit or like many feet? My jolt lurch is very small.
Drove the car just now with the foreman and it was easily reproducible at around 4mph we could see the Auto start stop green light engage and disengage and the jolt that came with it. Prior to the adaptation, this occurred at slow parking speeds like in my garage but now it happens at 4mph.
Drove the car just now with the foreman and it was easily reproducible at around 4mph we could see the Auto start stop green light engage and disengage and the jolt that came with it. Prior to the adaptation, this occurred at slow parking speeds like in my garage but now it happens at 4mph.
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GLE 580
Prior to my adaptation reset of the throttle and transmission, my "jolts" would occur much more frequently in slower speeds of 1-2MPH (parking speeds). This has since disappeared with these resets so now I'm left with the jolt at 4mph which is much more manageable. Still not great but I can live with it.
Last edited by wildta; Jan 31, 2024 at 06:12 PM.
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From: MA
MY2024 GLE 450
I think I finally understand what you're describing. So, I do find it a bit unexpected and it does happen in some situations. The most common is when the car is coasting to a light that is red, the driver naturally applies the break pedal ever so slightly, auto start/stop engages and turns the engine off. Then, the light turns green, the car is still coasting 3-4mph and you start moving you foot to push the gas pedal, which immediately engages the start/stop and turns the engine on. In this very moment, for like a split second, I do feel the torque applied is ahead of me pushing the gas pedal and "feels" disproportional since you haven't even had a chance to press that gas pedal much. It's subtle / minor for me and likely "works as designed". It's also possible that the torque applied at that moment is higher on 580s than on 450s (which I have).
I don't know how it may affect any kind of parking situation though. When I roll in a tight space garage, I just let it coast at 1-2 mph, it's the torque that constantly gets applied when the car is in "D" gear. The engine stays on at all times. If I break to a stop and resume, no unexpected moves or acceleration happens. Same for parking lots, I can't easily imagine a "high speed -> coast -> break / gas / park" situation that could trigger the above.
I don't know how it may affect any kind of parking situation though. When I roll in a tight space garage, I just let it coast at 1-2 mph, it's the torque that constantly gets applied when the car is in "D" gear. The engine stays on at all times. If I break to a stop and resume, no unexpected moves or acceleration happens. Same for parking lots, I can't easily imagine a "high speed -> coast -> break / gas / park" situation that could trigger the above.
Last edited by stktyz33; Jan 31, 2024 at 02:52 PM.
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2021 GLS580 | 2011 ML350 BlueTec | 2009 Pontiac G8 GXP
I wonder how much the 450 vs 580 plays into this. I also tried to get our 580 to do it on demand and most times the stop/start was very mild/smooth only once would it be described as a jump/jolt. In my instance I was slowing for a four way stop waiting my turn driving very slowly. Stop/start engaged around 1mph going to 0, I released the brake, and the subsequent start caused a jump. Doesn't happen all the time, but does happen. The more I drive the vehicle the more I find myself turning off stop/start. I find myself in a lot of stop/go situations with our busy intersections and kid pickup/dropoff and even the smooth engagements of start stop are annoying every few seconds.
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GLE 580
I think I finally understand what you're describing. So, I do find it a bit unexpected and it does happen in some situations. The most common is when the car is coasting to a light that is red, the driver naturally applies the break pedal ever so slightly, auto start/stop engages and turns the engine off. Then, the light turns green, the car is still coasting 3-4mph and you start moving you foot to push the gas pedal, which immediately engages the start/stop and turns the engine on. In this very moment, for like a split second, I do feel the torque applied is ahead of me pushing the gas pedal and "feels" disproportional since you haven't even had a chance to press that gas pedal much. It's subtle / minor for me and likely "works as designed". It's also possible that the torque applied at that moment is higher on 580s than on 450s (which I have).
I wonder how much the 450 vs 580 plays into this. I also tried to get our 580 to do it on demand and most times the stop/start was very mild/smooth only once would it be described as a jump/jolt. In my instance I was slowing for a four way stop waiting my turn driving very slowly. Stop/start engaged around 1mph going to 0, I released the brake, and the subsequent start caused a jump. Doesn't happen all the time, but does happen. The more I drive the vehicle the more I find myself turning off stop/start. I find myself in a lot of stop/go situations with our busy intersections and kid pickup/dropoff and even the smooth engagements of start stop are annoying every few seconds.
Last edited by wildta; Jan 31, 2024 at 06:39 PM.
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From: MA
MY2024 GLE 450
It's somewhat the same, keep in mind that on MY2024 they moved it to the transmission (Gen 2). While it may not necessarily make much difference from the driver's perspective, the cars are different mechanically.
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GLE 580
Second-generation ISG and further-developed 9G-TRONIC
The second generation of the integrated starter-generator is being launched in the E-Class models. The electric machine is no longer part of the engine but instead the transmission. This makes it easier to combine the innovative technology with different engines. Accordingly, the 9G-TRONIC automatic transmission has been further developed and will initially be used in the four-cylinder engines. The electric motor, power electronics and transmission cooler have moved to the transmission. As a result, previously necessary cables have been dispensed with, resulting in installation space and weight advantages. The efficiency of the transmission also increases. Example: the improved interaction with the electric auxiliary oil pump reduces the delivery volume of the mechanical pump by 30%. Further contributions to increased efficiency are made by the new generation of fully integrated transmission control with a multicore processor and a new assembly and connection technology. Despite increased computing power, the number of electrical interfaces has been drastically reduced and the weight of the transmission control unit reduced by 30%.
Last edited by wildta; Jan 31, 2024 at 08:23 PM.
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Mercedes 2022 GLE 350
Yeah, they tried to tell me it was normal for my 2022 GLE 350 the first time I took it in for that same issue. The second time I took it in for that issue I told them I reported the issue to the NHTSA, and reminded them of the Florida Lemon Law... they fixed it. Apparently they fixed it with a software update because it hasn't done it again. Good luck!
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2021 GLS580 | 2011 ML350 BlueTec | 2009 Pontiac G8 GXP
Yeah, they tried to tell me it was normal for my 2022 GLE 350 the first time I took it in for that same issue. The second time I took it in for that issue I told them I reported the issue to the NHTSA, and reminded them of the Florida Lemon Law... they fixed it. Apparently they fixed it with a software update because it hasn't done it again. Good luck!
I noticed another variable today that might play a part. Comfort drive setting seems to idle around 500 RPM while sport bumps the idle up to around 800 RPM. I'll have to pay attention to what drive mode I'm in the next time I notice it.
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GLE 580
I believe that. It's certainly a logic issue. IMO they are too aggressive with the shutdown resulting in an immediate re-start. I've driven a number of GLE350 loaners before we got our 580 and they were even worse due to the traditional starter vs the ISG.
I noticed another variable today that might play a part. Comfort drive setting seems to idle around 500 RPM while sport bumps the idle up to around 800 RPM. I'll have to pay attention to what drive mode I'm in the next time I notice it.
I noticed another variable today that might play a part. Comfort drive setting seems to idle around 500 RPM while sport bumps the idle up to around 800 RPM. I'll have to pay attention to what drive mode I'm in the next time I notice it.
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GLE 580
Thanks. I've read your recommendation from another thread and tested it on my vehicle but it didn't have any difference; also 90% of my driving is in comfort as I prefer it over Eco unless I'm road tripping on the freeway for the added sailing.
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2021 GLS580 | 2011 ML350 BlueTec | 2009 Pontiac G8 GXP
No thank you. I can't stand the pedal response in Eco, I bought a TTV8 because I want it to move when I press the pedal. I think it also deactivates some of E-ABC's functionality to reduce the electrical load. I searched out a vehicle with E-ABC for the comfort. My solution is simply to press the stop/start button. It will likely get coded to remember its last setting in the future.
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GLE 580
No thank you. I can't stand the pedal response in Eco, I bought a TTV8 because I want it to move when I press the pedal. I think it also deactivates some of E-ABC's functionality to reduce the electrical load. I searched out a vehicle with E-ABC for the comfort. My solution is simply to press the stop/start button. It will likely get coded to remember its last setting in the future.
