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 ...

Continuing destination guidance
If the destination was not reached during the last trip, destination guidance can be resumed. "Resume guidance" ...

Initialization after a power failure
After a power failure, it is only possible to raise the roof, if necessary. Have the system initialized by your service center. ...