System Activation And Calibration Sequence

WARNING: This page does not describe the selected car, but rather 46 other vehicles, including the 2008 BMW M5, 2008 BMW 650i, 2007 BMW Z4, 2007 BMW M6, and 2007 BMW M5. However, it is still accessible from the selected car via links, so may be relevant.

When terminal 15 is switched ON, the headlights always perform a calibration sequence, even if the dipped headlights are not switched on. The control unit for adaptive headlights sends the "perform calibration sequence" request to the stepper motor controllers (SMCs, control units for the headlight stepper motors). The stepper motor controllers actuate the stepper motors in the headlights. The calibration sequence is performed. In the calibration sequence, the headlights move as follows:

The headlights move to the right and left (= calibration sequence for adaptive headlights).
The headlights move up and down (= calibration sequence for automatic headlight-range adjustment).
At the end of the calibration sequence, the headlights are in the straight-ahead position.

Following the calibration sequence, the system is ready for operation.

When reverse gear is engaged, the headlights are moved to the straight-ahead position.

NOTE: The calibration sequence is performed only after terminal 15 has been switched OFF for at least 15 seconds.

If terminal 15 is switched on and off repeatedly (for example, for demonstration reasons), the headlights are not calibrated each time terminal 15 is switched on.

Terminal 15 must have been switched off for at least 15 seconds before it is switched on. Only then is a calibration sequence performed when terminal 15 is switched on.