Gearbox thumps into higher gear

Mr Filipov

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Hello,

Following my post on the steering rack I decided to post my other little problem as well.
Very situation specific problem, so the conditions have to be right for this to happen.
Gearbox in S, under its aggressive adaptation (when it hold the given gear in case you want to get back on the accelerator), and usually over 3k rpms and no throttle input.
All well and good, but then when it does decide to upshift, it will do it with a violent thump (jolt) and I am getting concerned this will damage the box in the longer term.
Granted, it will rarely happen, but enough times for me to be concerned.

Has anyone got ideas of what could be the cause? 2011 E350 CDI 265 with 7G+.

Many thanks
 
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John Laidlaw

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I get this a lot with the 63
The adaption in s Or s+ is like Jekyl and hide compared with c - my AMG compatriots tell me this is normal and no concern so I believe it... :(
I get some occasional horrible downshifts too....
 
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Mr Filipov

Mr Filipov

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Hmmm, that does not sound very convincing to me
 

ernieh

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Hello,

Following my post on the steering rack I decided to post my other little problem as well.
Very situation specific problem, so the conditions have to be right for this to happen.
Gearbox in S, under its aggressive adaptation (when it hold the given gear in case you want to get back on the accelerator), and usually over 3k rpms and no throttle input.
All well and good, but then when it does decide to upshift, it will do it with a violent thump (jolt) and I am getting concerned this will damage the box in the longer term.
Granted, it will rarely happen, but enough times for me to be concerned.

Has anyone got ideas of what could be the cause? 2011 E350 CDI 265 with 7G+.

Many thanks
If the gearbox has been recently serviced, I would have the codes read, otherwise something a little sticky? The first step for me would be an oil change.

Ernie
 
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Mr Filipov

Mr Filipov

Senior Member
Joined
Dec 31, 2015
Messages
739
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Your Mercedes
2017 BMW 535d Gran Turismo
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If the gearbox has been recently serviced, I would have the codes read, otherwise something a little sticky? The first step for me would be an oil change.

Ernie

Gerabox serviced in Feb before I picked up the car at main dealer.
 

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