DaBeergod

I just tried rolling down my windows, and they all went down except the back driver side window. I am not sure why. Does anyone have any idea???

DaBeergod

By the way I have a 2004 E320.

TPAbnz

Try the re-sinc procedure from the manual.

Diesel Benz

Do you mean it does not go fully down even if you keep on pressing the button? If it does, then it is likely the re-sync issue (although odd if only one window needs to be resynchronised). Is the window moving smoothly, does it make any difference if you try to "help" a bit when opening it? Perhaps an issue with the mechanics although that should be more a problem with the W210 rear windows.

DaBeergod

It wasn't working at all. The window did not even move a bit. The next day I got in the car and it went down with no problem, like nothing was ever wrong. I am happy about that. Thanks guys

vettdvr

Sounds like the brushes in the motor might be sticking. Only way to fix it for sure is replace motor. (or open motor and replace brushes and you probably won't be able to find replacement brushes.)

I would expect this to happen again. Of course it could be a loose connector,, but my $$ is on the brushes in the motor.

gaazmon

Might be regulator, just putting my two cents. 3 years ago on my 94 S420 I had the back windows down and I couldn't get the one behind the driver to go back up, regulator went bad.

Kind of interesting thing, my friend's 93 500SEL had the same problem and so did my cousin's 98 528i and my other friend's 94 Jetta VR6. And this was all the same window, the one behind the driver. I've heard it's a German thing.

vettdvr

Correct. what most people say regulator,, they should realize this contains the motor, drive gears and of course the brushes for the motor.