AHL Control Unit On E60, E63

The AHL control unit is responsible for the vertical and horizontal adjustment of the bixenon headlights. For safety reasons, the AHL control unit is also responsible for the LWR (automatic headlight-range adjustment) for vertical adjustment).

Fig 1: Identifying AHL Module

Courtesy of BMW OF NORTH AMERICA, INC.

The AHL control unit is connected to the PT-CAN and is located in the control module carrier behind the glove compartment.