See also:

The concept
The following can be operated using the buttons and the thumbwheel on the steering wheel: Current audio source. Redial on telephone*. Activation of the voice activation system*. ...

Knee airbag
The knee airbag supports the legs in a frontal impact. ...

Running a function
Press the button. The function will run immediately. This means, for example, that the number is dialed when a phone number is selected. ...