On my 560SEL (1989) when I roll up the driver's window I get a very loud bang and clatter at the end, just when the window reaches the top. It seems like the motor is not shutting off, making the top of the window hit the frame hard, and the wanting to continue running, making the gear or something inside grind and creating a snapping sound in the door.

This is not the standard slider failure (I already bought a replacement in the case I have to go inside and take the mechanism apart - might as well put in a new slider!). My question is if anyone else had this happen, and if I should look at the electrical side (i.e. motor shutoff) instead.

Thanks!

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Henry Bofinger
1989 560 SEL (black/black)
2001 Audi TT Roadster (silver/grey)