See also:

Warning stages
Prewarning This warning is issued, for example, when there is the impending danger of a collision or the distance to the vehicle ahead is too small. Acute warning Warning of the imminent danger ...

Switching the system on/off
Switching off At the lowest fan speed, press the left side of the button on the driver's side. Switching on Press any button. ...

Switching on automatically
Select transmission position R with the engine running. The Top View and PDC images are displayed if the system is switched on via iDrive. ...