PeachParts Mercedes-Benz Forum - View Single Post - Rear window won't go all the way up on 123 sedan

rhodes2010 · #2 09-02-2011, 01:23 AM

Since you have had the door panel off you know how to get in there.

I do not have a specific answer for that exact problem.

But I would recommend that you remove the entire regulator assembly and
get it out where you can study it.

Things are much better repaired before complete failure.

Three 10mm head bolts hold the regulator to the door.

If I remember right I disconnected the window from the regulator mechanism,
then used the switch to bring the regulator down, get it out from the door.

If you want to prop the window up with a length of PVC or wood stick
cut to size it will hold the window up quite nicely until you are ready to
reinsert the regulator.

Now, with the regulator out you can easily check for it being bent,
missing tooth, and check the plastic sliding piece that the bottom
of the window connects to, these do get replaced and are readily
available, cheaply.

In all the years and all the window problems I have only replaced a regulator once or twice. A motor - never.

Hope this helped.