But I asked how it works, not how to work it.
I don't have that tool anyway.
My previous post is a little misleading....by "housings" I should have said the
projector lens housing inside the main headlight housing. The projector lens housings on each low beam projector has a
Range Control Adjustment Motor (ETKA part # 3B7 941 295) that is attached to the back on the low beam projectors.
Somewhere in the B5.5 Passat is some device (electrical or mechanical I do not know) that tells the Passat's ECU whether the car is level (horizontal) or not. When the ECU decides the car is going up or down an incline or decline or transition over the crest of a hill or valley between two uneven surfaces, a logic is activated that actuates these electric Range Control Adjustment Motors to adjust the projector lens (inside the main headlamp housing) to actuate up and down.
Adaptive headlamp-leveling is required for most all other countries outside North Amercia per
ECE Regulation 48 (Click Here) but it is not formally
required by U.S. Regulations.
This may not be a 100% accurate description but it is what I can discern from the ETKA 941-20 illustration, the Bentley manual, and looking at the hardware. Anyone can feel free to correct any incorrect info within my armchair philosopher description of this mechanism.