See also:

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 ...

Functional requirements
The system must have been initialized when the tire inflation pressure was correct; otherwise, reliable signaling of a flat tire is not ensured. Initialize the system after each correction of th ...

Microfilter/activated-charcoal filter
The microfilter traps dust and pollen in the incoming air. The activated-charcoal filter removes gaseous pollutants from the outside air that enters the vehicle. The service center replaces th ...