See also:

The concept
> The voice activation system can be used to control functions by spoken commands. > Functions that can only used when the vehicle is stopped cannot be operated using the voice activation sys ...

Terminating the voice activation system
Briefly press the button on the steering wheel or ›Cancel‹. ...

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