Quote:
Originally Posted by ReturnZero
They may be FTP (flash to pass) lights. What happens if the headlights are turned off and you pull the stock? It should be a halogen bulb in there so it doesn't have to try to fire up the Xenons when you flash somebody.
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You're correct that this is the way it should be, in my opinion, and it has been this way in every BMW I've ever driven–a halogen bulb in the headlight assembly is used for flash to pass if the car is equipped with HID headlamps. The new X3's don't have this halogen bulb, though. When I look into the innermost light housing on my X3 there is no bulb, but there is some wiring. Maybe this means the halogen bulb is included in some markets?