Jerky Downshifting when stopping
Member
Joined: Dec 2024
Posts: 75
Likes: 15
From: Panama
2024 GLS450 2020 BMW X6 2022 Land Cruiser Prado
How is your brake input, how is the behaviour in the following brake applications: 1. Emergency stop so full brake 2. Soft braking (tap feathering) to a riding-stop 3. Moderate braking normal braking to stop.
Need to get them to try that standstill adaptation. This is important.
Need to get them to try that standstill adaptation. This is important.
in the real world... they behave like they should...
day to day... stop and go traffic.... they are fine.... so light applications are good....
driving in city speed... between 25-40mph ... they brakes work fine..... the applications for slowing down is fine..
so emergency they are fine.... light they are fine... and moderate they are fine.... this car is to heavy to only have 2 piston callipper...
like i said before... i donnot know... what adaptations they are doing...
and they dont call them adaptatiions... nor have they mentioned that this 9A is adaptive...
Im dissapointed in this car
i own a 2020 bmw x6 xdrive 40i msport... a beauty in every sense of the word... and that ZF 8Hp transmission... is a delight.... shift super fast... responds super fast... and you dont feel anything..
Member
Joined: Dec 2024
Posts: 75
Likes: 15
From: Panama
2024 GLS450 2020 BMW X6 2022 Land Cruiser Prado
But for now... they are only doing updates and recalibrations... its been 15 days... since they have the car....
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Joined: Dec 2019
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MBWorld God!
Joined: Dec 2019
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to be real i do not like the power of these brakes.
in the real world... they behave like they should...
day to day... stop and go traffic.... they are fine.... so light applications are good....
driving in city speed... between 25-40mph ... they brakes work fine..... the applications for slowing down is fine..
so emergency they are fine.... light they are fine... and moderate they are fine.... this car is to heavy to only have 2 piston callipper...
like i said before... i donnot know... what adaptations they are doing...
and they dont call them adaptatiions... nor have they mentioned that this 9A is adaptive...
Im dissapointed in this car
i own a 2020 bmw x6 xdrive 40i msport... a beauty in every sense of the word... and that ZF 8Hp transmission... is a delight.... shift super fast... responds super fast... and you dont feel anything..
in the real world... they behave like they should...
day to day... stop and go traffic.... they are fine.... so light applications are good....
driving in city speed... between 25-40mph ... they brakes work fine..... the applications for slowing down is fine..
so emergency they are fine.... light they are fine... and moderate they are fine.... this car is to heavy to only have 2 piston callipper...
like i said before... i donnot know... what adaptations they are doing...
and they dont call them adaptatiions... nor have they mentioned that this 9A is adaptive...
Im dissapointed in this car
i own a 2020 bmw x6 xdrive 40i msport... a beauty in every sense of the word... and that ZF 8Hp transmission... is a delight.... shift super fast... responds super fast... and you dont feel anything..
Member
Joined: Dec 2024
Posts: 75
Likes: 15
From: Panama
2024 GLS450 2020 BMW X6 2022 Land Cruiser Prado
Member
Joined: Dec 2024
Posts: 75
Likes: 15
From: Panama
2024 GLS450 2020 BMW X6 2022 Land Cruiser Prado
Sorry about the confusion, I am still asking about your transmission not the brakes, I mean how does the transmission react under those 3 braking thresholds and differences. Do you hear a clunk noise, a bang noise or just jerking, does it jerk stronger in certain brake applications.
The tranmission does not jerk on emergency stops... as i can recall... but i have not done an emergency stop recently nor during the test drives...
the jerk comes while slowing down.... it does not need the brakes.... by it self... once it needs to droop a gear... from 4th to 3rd... it jerks... now after the 2 recallibrations... its better... but still perceptible....
the one that does not have any better outcome.... is asking the car power..... from fifth to 3rth.... then you can feel the clunk and the jerk,....
no soundss like metal to metal
MBWorld God!
Joined: Dec 2019
Posts: 32,222
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lol...
The tranmission does not jerk on emergency stops... as i can recall... but i have not done an emergency stop recently nor during the test drives...
the jerk comes while slowing down.... it does not need the brakes.... by it self... once it needs to droop a gear... from 4th to 3rd... it jerks... now after the 2 recallibrations... its better... but still perceptible....
the one that does not have any better outcome.... is asking the car power..... from fifth to 3rth.... then you can feel the clunk and the jerk,....
no soundss like metal to metal
The tranmission does not jerk on emergency stops... as i can recall... but i have not done an emergency stop recently nor during the test drives...
the jerk comes while slowing down.... it does not need the brakes.... by it self... once it needs to droop a gear... from 4th to 3rd... it jerks... now after the 2 recallibrations... its better... but still perceptible....
the one that does not have any better outcome.... is asking the car power..... from fifth to 3rth.... then you can feel the clunk and the jerk,....
no soundss like metal to metal
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Joined: Oct 2009
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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
to be real i do not like the power of these brakes.
in the real world... they behave like they should...
day to day... stop and go traffic.... they are fine.... so light applications are good....
driving in city speed... between 25-40mph ... they brakes work fine..... the applications for slowing down is fine..
so emergency they are fine.... light they are fine... and moderate they are fine.... this car is to heavy to only have 2 piston callipper....
in the real world... they behave like they should...
day to day... stop and go traffic.... they are fine.... so light applications are good....
driving in city speed... between 25-40mph ... they brakes work fine..... the applications for slowing down is fine..
so emergency they are fine.... light they are fine... and moderate they are fine.... this car is to heavy to only have 2 piston callipper....
Regarding your transmission, it sounds defective, maybe debris in a valve body.
MBWorld God!
Joined: Dec 2019
Posts: 32,222
Likes: 6,281
I second the possibility of a valve body issue although I still think it is worth trying the adaptation first. They probably won't pull the transmission off without having an error code stored so that is another annoying part. Thing about these computers is, they don't always know if itself is broken or something is actually wrong.
Junior Member
Joined: Apr 2025
Posts: 30
Likes: 13
2026 GLS 450 4MATIC
I had the Same issue with my 2024 GLS 450, I suggest you take it to dealership, there is a software update for this issue , and the dealership will also perform adaptations as part of the software update. Guess what after that its like a BUTTER , soft and smooth you will feel like a storm just Passed .
Good luck
Good luck
MBWorld God!
Joined: Dec 2019
Posts: 32,222
Likes: 6,281
I had the Same issue with my 2024 GLS 450, I suggest you take it to dealership, there is a software update for this issue , and the dealership will also perform adaptations as part of the software update. Guess what after that its like a BUTTER , soft and smooth you will feel like a storm just Passed .
Good luck
Good luck
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GLE 580
Last edited by wildta; May 21, 2025 at 08:00 PM.
MBWorld God!
Joined: Dec 2019
Posts: 32,222
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MBWorld Fanatic!
Joined: Oct 2009
Posts: 6,987
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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
In practice, I don't think it's any different from the previous method that required two technicians, but they had to drive around to do it.
Thus the "stand still" moniker.
MBWorld God!
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MBWorld God!
Joined: Dec 2019
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Strange they didn't give you any documentation, or work order, they probably forgot to. You could request for one but I think they basically installed that updated software and did some standstill adaptations.
Member
Joined: Dec 2024
Posts: 75
Likes: 15
From: Panama
2024 GLS450 2020 BMW X6 2022 Land Cruiser Prado
cars running fine for now.
Member
Joined: Dec 2024
Posts: 75
Likes: 15
From: Panama
2024 GLS450 2020 BMW X6 2022 Land Cruiser Prado
This is the report they gave me in spanish...it only had 6k miles on the clock at the time being.
