My front windows in a 94 124 Coupe are winding up and down slowly.
It feels/looks like maybe something needs lubrication.


Can someone let me know if there is anything I should be doing to them as part of servicing?

Thanks

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Smoke Silver 1994 E220 Coupe Automatic
0 kilometers 6 September 1994
100,635 kilometers - 6 September 2010

No servicing...Motor could be getting tired or the wiring is beginning to fray in the door jam. Apply a 12V battery to the motor directly and see what speed it goes down. If it is faster than usual you can assume the wiring is beginning to get increasing resistance. I am no electrician though.

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2016 Monsoon Gray Audi Allroad - 21k
2008 Black Mercedes E350 4Matic Sport - 131k
2014 Jeep Wranger Unlimited Sahara - 62k
2003 Gray Mercedes ML350 - 122k

I know the w126 window regulators do require occasional cleaning and lubrication, though it's often neglected.

Some of the later models have a speed check for window closing speed as part of their inspection, which would imply servicing the mechanism if the windows didn't close at the proper rate.

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-Josh
Testing the cheap Mercedes axiom, one bolt at a time...