Question about BMW X5 Series
It sounds alot like you may have the wiring plug in backwards. Here is the line of thought. Your switch is a 2 way switch with 2 options up and down. One switch position is on for up and one position is on for down. So what this means is if the wiring is backwards, you are giving the down wires the ON signal when the up switch is pushed and you are giving the up wires ON when down side of the switch is pushed.
I know it is a pain to pull the door apart and test, but the switch does not really know what way is up and down, this is handled by pulsing power to certain wires via the switch. I would advise taking the door apart and checking the positioning of the connector plug into the switch, making sure it is correctly in place.
Please post back if you need anything further or there are any new developments,
Posted on May 24, 2011
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Posted on Jan 02, 2017
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