See also:

Fuses
Replacing fuses Never attempt to repair a blown fuse and do not replace a defective fuse with a substitute of another color or amperage rating; this could lead to a circuit overload, ultimate ...

Example: dialing a phone number
1. Briefly press the button on the steering wheel. 2. ›Dial number‹ The system says: »Please say the number«. 3. For instance, ›123 456 790‹ The system says: »123 456 790. Continue?   ...

Switching the interior lamps on and off
Press the button. To switch off permanently: press the button for approx. 3 seconds. Switch back on: press button. ...