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      03-15-2015, 01:20 PM   #6
SwissArmy
Why so serious?
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Drives: BMW Z4; BMW X5; BMW 733
Join Date: Dec 2012
Location: Toronto

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Quote:
Originally Posted by Finnegan View Post
There's a controller somewhere along the line prior to the ballast. IIRC mine went bad at one point, the dealer (under warranty) did all you've already done, then concluded it was the controller. Sorry I do not remember more--it was several years ago and under warranty so there was no diy'ing involved. Realoem .com might give you some clues on the other components in the chain of items/electronics for headlights.
Hey Finnegan,

Did the problem occur for just one headlight or to both? I don't understand how a malfunctioning light control module can affect just one headlight, and JUST the HID.
Appreciate 0