On my new (to me) '85 190D, all the windows power up and down just fine, but on the passenger side front window, when it gets all the way up, the motor doesn't stop like it should but continues "click, click, click" as long as you press the button.

I've gotten better and can stop it after two clicks, sometimes one if I'm lucky, but something's not right. Sounds like gears not meshing. Any idea how to fix? Works fine now, but I'm expecting it to fail sometime, or wear out the gears.

Thanks for any insight.

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-Steven

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1959 190b, totalled
1968 220D, sold
1969 230/8, sold
1980 240D manual, gave away at 300k (stupid me)
1985 190D 2.2 manual, gave away to a youngster
1989 300CE, sold when I retired - major regrets