Wondering if you guys can help me here. I have just fitted pre facelift xenon headlights to my Z4; ie has a xenon lamp & a haolgen lamp installed in them not your Bi-xenon units. I was under the impression that the halogen bulb was ONLY used for a 'flash to pass' function and the xenon was used for dip beam & main/full beam which was differentiated by a flap that covers half the xenon lamp when in dipped beam and vice versa. My headlights fitted however seem to only work with xenon in dipped beam and halogen comes on permanantly in main/full beam but no difference to the light intensity of the xenon; ie no flap seems to move to give more light. So to round off I basically have xenon light same intensity & halogen light when in full/main beam.
I have fitted the auto leveller sensors, washers are all plugged up etc but I still have my old LCM module fitted so wondering if this is maybe the cause. Or I have been completly misinformed from all the confusing contradictions on other websites and this is exactly how the lights function on a pre facelift Z4. Can anyone enlighten me on this? What is the true functionality of these headlights?
