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. ...

Vehicle battery
Maintenance The battery is maintenance-free, i.e., the electrolyte will last for the life of the battery. Your service center will be glad to advise you on questions regarding the battery. Batt ...

What to do if …
What to do if… > The current position cannot be displayed? The position is in an unrecognized region, in a poor reception area, or the system is in the process of determining the position. Rece ...