E46 - Adaptive Headlights (AHL), Diagnostics: Notes

WARNING: This page does not describe the selected car, but rather 37 other vehicles, including the 2006 BMW 330Ci, 2006 BMW 325Ci, 2005 BMW M3, 2005 BMW 330xi, and 2005 BMW 330i. However, it is still accessible from the selected car via links, so may be relevant.

Please note the following when performing diagnostics on the adaptive headlights:

Switch-on conditions for the indicator lamp
Fault reported by customer: "Large sweep and then nothing".
Fault reported by customer: "No adaptive headlights at (e.g.) 80 km/h"
AHL control unit diagnostic mode
List of malfunctions for adaptive headlights
Diagnostics on bi-xenon lights