So, the other night I noticed that my headlight beams seemed to be very low and I was out-driving them at 20 mph...looking closer into the problem, when I turn on the headlights, the beams turn on and then (rather than pivoting up like usual) they pivot down a bit. Since the lights ARE moving, I figure that the fuses and relays should be good and that it should be a sensor? Does anybody know the cause of my problem and how to fix it? BTW, I have an 03 MCS with Xenon lights.

 

on the rear left control arm - lower arm directly inward from the left rear wheel, there is a small black housing with a plastic arm which pivots with the arm and the black housing has a sensor that sends a signal to tell the car to adjust the height of the headlights.

Perhaps there is something wrong with this sensor or pivoting arm??

good luck!

 

Please delete, double posted.

 

There is also a front sensor on the right side.

http://www.realoem.com/bmw/showparts...07&hg=33&fg=30

 

Damn German engineers...thanks, I'll check it out tomorrow!