I just installed new Xenon D1S bulbs on my 2012 X6, and the angle of the lights is way too low. I tried adjusting them and also got the same result that the nylon screw head is very easily stripped! I turned the screws but found that they vertical adjustment didn't move at all.
Very frustrating. Will be taking it to the dealer.
Do you think the new bulbs could have affected the beam angle?
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