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Driver side window suddenly not going up the whole way.

TonyCLA

New Member
Joined
May 12, 2025
Messages
12
Location
County Durham
Car
Mercedes Benz CLA220D AMG Shooting Brake (66 Plate) C117
Hey guys, random issue thats started to happen today.

So when I put my driver side window up, it gets to the top then automatically lowers itself half an inch or so. If I the try to put it back up all the way after it drops an inch, it will go up. The moment I open my door, it drops as usual for the door to open, but when I close the door, it won't go back up on its own again, so technically I cant lock the car without the window being full up, it just stays in the 'drop position'.

Any idea what's causing this, or how to fix it? Literally packed the car for our trip to the lakes and noticed it before I set off.
 
Have you checked for anything that may be obstructing the window?

Try cleaning the glass and the channels it slides in and also have someone try to push it up gently whilst closing it.

Have you tried it with engine running? Failing batteries can produce odd faults.
 
Yes, as above by both
Reset it after cleaning - should do the trick - mine does that
about once a year and IIRC, I've held onto the up button
however, check for debris, lightly clean the runner at the top side of door and reset. Should be
ok.
 
Sorry guys signal has been so poor here that I only got around to checking.

So I can confirm by putting the window all the way up, and holding it for a few seconds.

Thanks folks
 

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