The xenon (HID) lamp is a single bulb in a housing -- the housing contains the apparatus that focuses for low or high beam, and the bulb just burns constantly. If your low beams work, your xenon bulbs aren't your problem. If you just have a regular flash-to-pass bulb out, it should be a cheaper repair. Cheers, John.
As I mentioned in the original discussion, the high beam on bi-Xeon has two solinoids. When you call for highbeams, the one solenoid flips the shield open, then the second one holds it open. Maybe the cecm module is sending the first signal and not the second. Do a vagcom scan to see if it can shed some light on issue.
The Xenon bulbs themselves don't actually change from low to high beam, in other words, the output of the bulb itself is the same brightness for both low and high beam. There's a shutter in the projector that opens to change to a high beam pattern. It's operated by a solenoid, which may have gone bad PLEASE SUBSCRIBE, it will cost nothing to you, but HELP us a lot.If you do not have a high (full) beam at your Opel (Vauxhall - Buick Regal) Insignia (Astra

Now let's see how they actually work. Even though a common name for most HID lights is “Xenon headlamps”, most of them are actually metal halide lamps that contain Xenon gas, which is only

2) HIDs have extra components - like a ballast. Those components are not present on halogen cars. So the HIDs are not just different bulbs. 3) In the Z4, like many other modern cars, the high and low beam bulbs on halogen cars are the same. They simply have different reflective sheilding around them. . 6 243 3 35 359 66 291 208 292

bi xenon high beam not working