See also:

Deleting contacts
1. "My contacts" 2. Highlight the contact. 3. Open "Options". 4. "Delete contact" or "Delete all contacts" ...

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. ...

Charging the battery
In the vehicle, only charge the battery via the terminals in the engine compartment, with the engine switched off. ...