GLS Class (X167) Produced 2020 to present

2021 gls 63 transmission problems

Old Aug 15, 2021 | 06:53 PM
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davidmercier56's Avatar
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21gls63 18 amg gtc 17gls 550
2021 gls 63 transmission problems

I just pick up my new gls63 the transmission bangs at a stop then take off it seem lost in between low gears shifts .any one else having these problems

Last edited by davidmercier56; Aug 15, 2021 at 07:38 PM.
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Old Aug 17, 2021 | 12:19 PM
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2024 EQS SUV 450, 2017 E300 (miss my 2021 GLS63, 2018 GLC 300, and BMW K1200GT)
GLS63 transmission problems

Originally Posted by davidmercier56
I just pick up my new gls63 the transmission bangs at a stop then take off it seem lost in between low gears shifts .any one else having these problems
I have something similar, just got over 2.6K on my GLS63: what I feel is happening is the regenerative and disc braking transition isn't very smooth. I see this on my vehicle when I'm rolling slowly to a stop sign, ~15mph in 3rd or 2nd gear. It seems like either the disc brakes come on full power and feels like a "bump" or sudden grab. I thought it was a transmission issue at first (and it still might be) but more noticeable at slow <20mph speeds when I'm creeping up to a stop. It's bothering me but not enough yet to take it to the dealer since I really like driving it so much right now. I would assume that transition to disc brakes could be adjusted, but if not, then I'd be really pissed. But based on what I hear about MY22 V8s being cancelled, I'm guess I should be happy to have, potentially, the last of the dino-juice V8s.
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Old Aug 17, 2021 | 10:49 PM
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21gls63 18 amg gtc 17gls 550
Originally Posted by Bassamatic76er
I have something similar, just got over 2.6K on my GLS63: what I feel is happening is the regenerative and disc braking transition isn't very smooth. I see this on my vehicle when I'm rolling slowly to a stop sign, ~15mph in 3rd or 2nd gear. It seems like either the disc brakes come on full power and feels like a "bump" or sudden grab. I thought it was a transmission issue at first (and it still might be) but more noticeable at slow <20mph speeds when I'm creeping up to a stop. It's bothering me but not enough yet to take it to the dealer since I really like driving it so much right now. I would assume that transition to disc brakes could be adjusted, but if not, then I'd be really pissed. But based on what I hear about MY22 V8s being cancelled, I'm guess I should be happy to have, potentially, the last of the dino-juice V8s.
I took it to the deal, the service tech felt it bang he says it not normal .we put in the scanner a cam sensor came up no transmission code .so we are starting their .I Owen a
2018 a m g g t c shift like butter . I hope we can fix g l s 63 for 150,000 I expect best from a m g


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Old Aug 25, 2021 | 04:41 AM
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21gls63 18 amg gtc 17gls 550
now my brakes are loud making tons of noise grab at stop grinding
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Old Aug 25, 2021 | 06:14 PM
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As for the brakes, did you try bedding them in?
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Old Aug 25, 2021 | 11:17 PM
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21gls63 18 amg gtc 17gls 550
please explain that to me I never heard that before


thanks d
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Old Aug 26, 2021 | 06:47 AM
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No problem but I will let a video explain it for me (a video that is shared by another forum member here, hopefully it helps you understand the process better):
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