Interior problem
1995 BMW M3 6 cyl Two Wheel Drive Manual 150000 miles
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My window occasionally doesn't want to raise straight. I've taken a part, realigned, adjusted. Works great for week and then does it again. New motor? Something bent? Movable parts worn?

Thanks.

The white plastic track runners should be replaced and the back track for the felt channel should be inspected for damage. Lube the felt with dry silicone. Be sure to do this where it's warm as the plastic can be brittle when cold.