See also:

Buckling the belt
Buckling the belt Make sure you hear the latch plate engage in the belt buckle. ...

Switching on automatically
Select transmission position R with the engine running. The images from Top View and PDC are displayed when the system has been switched on using iDrive. ...

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. ...