Setting headlights to parked position
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.
When terminal R is switched off, the headlights move to the parked position. The parked position is important for the headlights' next calibration sequence: from the parked position, the headlights are run through a calibration sequence in the pre-drive-check. During this calibration sequence, the AHL control unit learns the straight-ahead position for the headlights once again.
When the headlights have reached the parked position, the stepper motor controllers (SMCs) inform the AHL control unit ("acknowledge"). The AHL control unit deactivates the stepper motor controllers. The post-run time (= the time between "acknowledge" and "switch off") is approximately 10 seconds.