[lkchris]

There are two aspects to the automatic adjustability of the Litronics.

The cool feature is the raising of the low beam to supplement the high (halogen) beam.

Less noticed is German legal requirements when hid lighting is fitted. These cars are required to have automatic beam height adjustment to compensate for loading of the car that creates raising the front end. This requires sensors that are not integral to the headlight unit but rather are closer to the center of the car. Also required by regulation when hid is fitted is some sort of headlight washing.

The notion of replacing the high beam halogen bulb with an hid burner is flawed in that the burner cannot come to full brightness as quickly as a halogen bulb ... meaning the flasher function becomes ineffective. Flashers another German requirement.

Aftermarket solutions are as usual fairly amateurish compared to factory equipment.