See also:

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

What to do if...
Only a black screen is visible. Switch on the system. There are no options available on the screen. Replace remote control batteries. Radio stations or TV channels are grayed out and c ...

Voice phone book
Depending on how your vehicle is equipped, it may be necessary to create your own voice phone book. The entries must be entered using voice activation and are separate from the memory in the ...