Akhafeez

Hi guys,

So when i pull the passenger side window all the way up it goes really slow. ALSO seems to have lost its automatic up and down function. When it goes all the up, i lift my finger off the button then it pushes down (opens) alittle on its own. Anyone have any ideas?

Merserybenze

did you try the 'reset'?

Try to raise the window by holding the button up on the "first setting", i.e. don't lift it all the way up. Once it's closed, then lift it all the way up and hold it there for 10 seconds. Then try again, auto down and then auto up.

jbt56

Apparently, different years/models of MB have different procedures, but recently my 2012 C250 driver window lost its auto-up function and did that slight drop when closed. My dealer showed me on mine how to reset any window- manually raise and lower the window (from driver door master switch - hold at first detent) one or more cycles, then try the auto function. As soon as it works, you're done.

Your slow speed could indicate something else; I did not have that issue. Hope this helps.

Akhafeez

great it worked!! thanks guys.