...BMW 850i. What causes this? The window does work fine, but its supposed to slightly crack open when you open the door, and then go all the way back up (1/4 inch or so) when you close the door. This is an issue because its hard on the seals to open and the close the door if this function isn't working properly. What would cause this? relay? Actuator? Help!!

I had the same trouble with mine!