I believe in those cases the auto level feature is just disabled.Īlso you say the head light has new metal adjustors did the headlights function properly after those new adjustors were installed or did this issue occur after the new adjusters were installed? If these are oem hellas that you added to a car that originally did not have factory xenons then the sensors and control module will not be issues because most people do not retrofit them. Not exactly sure how to diagnose those, but just saying the issue may not be calibrating the motor. ![]() What if one of those sensors is sending an incorrect signal making the headlight point low? Or perhaps the control module is malfunctioning. Did your car come with xenons from the factory? If so there was a control module and a level sensor in the rear (attached to the part of the suspension) and maybe also one in the front. ![]() First I am assuming you have oem hella xenon headlights. I don't have an answer about the motor, but I do have some other ideas. If so, am I sunk? If not, can these motors be calibrated? Photos reveal that the stepper motor might be inside the headlamp capsule. Searching this forum plus the web in general, one finds everything *except* how to calibrate the final position of the auto light beam alignment feature. Having eliminated all but one potential cause for the light beam to be too low, it seems reasonable that the adjustment stepper motor is the ultimate culprit. One stepper motor is located inside each headlight assembly.Ģ002 e39 540i, HID headlights (apparently the factory units)ġ) both headlights move in tandem when switched on.Ģ) both headlights settle into their final positionĤ) the passenger-side manual adjustment is as 'up' as it will goĥ) both headlights have the aluminium manual adjustment parts upgrade (i.e., broken internal parts are replaced) Tion is described further on in this section. This system automatically adjusts the vertical position of the headlight beams toĬompensate for vehicle loads ensuring optimum beam throw. ![]() LWR: All 1999 model year systems are also equipped with LWR (Headlight Beam ThrowĬontrol). Is there a way to calibrate the Headlight Adjustment Stepper Motors? They are found with this feature:
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