See also:

Activating HDC
Press the button; the LED above the button lights up. ...

Navigation system
General informationThe navigation system can determine the precise position of the vehicle, with the aid of satellites and vehicle sensors, and can reliably guide you to every entered destination. ...

Initializing after a power failure
After a power failure during the opening or closing process, the roof can only be operated to a limited extent. Initializing the system The system can be initialized when the vehicle is statio ...