See also:

Automatic deactivation during forward travel
The system switches off when a certain driving distance or speed is exceeded. Switch the system back on if necessary. ...

Deleting all stored programs
Press both outer memory buttons 1 for approx. 20 seconds until the LED flashes rapidly. All stored programs are deleted. The programs cannot be deleted individually. ...

General information
Lamps and bulbs make an essential contribution to vehicle safety. The manufacturer of your vehicle recommends that you entrust corresponding procedures to your service center if you are unfamil ...