See also:

Close the windows and glass sunroof
Driving with the glass sunroof and windows open results in increased air resistance and raises fuel consumption. ...

Deleting the button assignments
1. Press buttons 1 and 8 simultaneously for approx. five seconds. 2. "OK" ...

Using voice activation
Activating the voice activation system 1. Press the button on the steering wheel. 2. Wait for the signal. 3. Say the command. The command is displayed in the instrument cluster. This symb ...