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Old 07-03-2011, 10:01 AM
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Join Date: Aug 2004
Posts: 13
w124 window won't roll up

Driver side front window stops about 5-6mm from the top, just inside the window seal. It startled me at first because I heard a loud popping/cracking sound all of a sudden, I assume this is a mechanism to protect the gear teeth not the teeth being torn to bits each time I roll up the window?

I checked threads and the door itself looks ok, nothing in the track that I can see to obstruct it. So, does this mean my regulator is bent/broken and will not allow the window to go fully up? Or maybe it is can be tightened up or adjusted? The window is not loose, there is only a little bit of play when it is rolled down.

I'd like your opinion before I take the door apart; this is old car and I risk breaking some plastic bit taking the door off (I was lucky the first time, when replacing the door check).

'94 E420, 275,000 miles

Last edited by wally; 07-03-2011 at 10:12 AM.
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Old 07-03-2011, 01:49 PM
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Join Date: Feb 2010
Posts: 54
Only way to find out is to open it up... you're going to have to open it anyway to fix the problem.
1992 300CE
3pc18" Staggered BRABUS Monoblock IVs

FS/FT: 17" OEM 6-Spoke Wheels
FS/FT: 16" Lorinser RS-90s
FS: W211 Steering Wheel
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Old 07-03-2011, 01:53 PM
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Join Date: Mar 2009
Location: Philadelphia
Posts: 6,374
I had the same issue, turned out to be a plastic clip on the regulator, it had snapped and swiveled down so the window would still operate but stopped an inch or two from the top. I would recommend taking a look at the regulator, they are pretty easy to get out (easier than the w126 jaws type for sure)
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Old 07-03-2011, 02:24 PM
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ich fahre, also bin ich
Join Date: Mar 2002
Location: South Florida
Posts: 1,660
A hot glue gun helps much of the time in repairing any door panel clips that break off.

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