See also:

What to do if...
Only a black screen is visible. Switch on the system. There are no options available on the screen. Switch over between the display screens. Radio stations or TV channels are grayed out ...

Coolant
Coolant consists of half water and half additive. Not all commercially available additives are suitable for your BMW. Ask your BMW center for suitable additives. Only use suitable additives; other ...

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. ...