Gear box. High revving, won’t go into manual

[karlost]

Hi All

I recently bought an E220 W212 2014. Occasionally the gear box seems to get stuck, it rev’s much higher and won’t go into manual mode. If I switch the car on and off it solves the problem. Initially this happened every couple of weeks, it is now happening every other time I drive the car.

Any ideas would be much appreciated.

Also there is a slight vibrating noise when accelerating. Tried my best to find it but no luck.

Thanks

Karlos

 

[Wighty]

Welcome buddy , ideally you need to go to a decent MB Indy who has the Mercedes Star computer diagnostic equipment . Where do you live so someone can recommend one for you

 

[alexanderfoti]

Yes, your gearbox is in limp mode when it does that. It will stick in the last gear it was in and will not let you override it etc. Probably a failed speed sensor.

 

[karlost]

Yes, your gearbox is in limp mode when it does that. It will stick in the last gear it was in and will not let you override it etc. Probably a failed speed sensor.

Thank you so much I will get it looked into

 

[Potn00]

Thank you so much I will get it looked into

Hi,

How did you fix it, I'm having exactly the same issue.

Best,

 

[Capra]

Had the same problem with my 7G gearbox. It started to not shift up and was almost like I had a clutch that was slipping. I went to the garage, they couldn't find a problem, so reset and did a software update, and that sorted it.
It then came back last month, but this time I was unable to get passed 3rd gear, and unable to rev passed 2.5k but this time, the engine management light came on. The problem this time was down to a exhaust pressure switch.
I've also had two wheel speed sensor failures. The result of this was, no ABS and cruise control.