System activation and automatic calibration

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:

1. The headlights move to the right and left (= calibration sequence for adaptive headlights).
2. The headlights move up and down (= calibration sequence for automatic headlight-range adjustment).
3. 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.

• E66, E61, E63, E64, E65, E66 until 09/2006 
• E87, E90, E91, E92, E93 until 03/2007 

If terminal 15 is repeatedly switched on and off (e.g. for demonstration purposes), the calibration sequence will not be executed every time terminal 15 is switched on.

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

• E66, E61, E63, E64, E65, E66 from 09/2006 
• E70 from start of series production 
• E81, E87, E90, E91, E92, E93 from 03/2007 

If terminal 15 is repeatedly switched on and off (e.g. for demonstration purposes), the calibration sequence will not be executed every time terminal 15 and the dipped-bead headlights are switched ON.

• not E65, E66

From 09/2007, starting with the E60, E61, E63, E64, a calibration sequence with larger range of movement will be introduced.

The calibration sequence with larger range of movement will then gradually be introduced on other model series.