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Old 07-08-2003, 10:52 AM
G-Benz's Avatar
G-Benz G-Benz is offline
Razorback Soccer Dad
Join Date: Apr 2001
Location: Dallas/Fort-Worth
Posts: 5,711
You have a broken track holder on your window regulator. This is the most common failure among 300E owners as these age. I had replaced the regulators on both rear doors within a year of each other some time ago.

I believe the part is obtainable for a couple of dollars. Otherwise, depending on how much playing with the window you've already done, you may have buggered up the cable mechanism enough to warrant a new assembly ($140+).

Either way, you need to remove the door panel to get to the offending part. It's about an hour (or more if it's your first time) to do the R&R...
2009 ML350 (106K) - Family vehicle
2001 CLK430 Cabriolet (80K) - Wife's car
2005 BMW 645CI (138K) - My daily driver
2016 Mustang (32K) - Daughter's car
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