See also:

Requirements
Via the Control Display, set a language that is also supported by the voice activation system so that the spoken commands can be identified. Set the language. ...

DTMF suffix dialing
DTMF suffix dialing can be used for gaining access to network services or for controlling devices, e.g., to make a remote inquiry of an answering machine. The DTMF code is needed for this purpose. ...

Activating a list and creating the setting
Press a button on the right side of the steering wheel or turn the thumbwheel to activate the required list. Create the setting using the thumbwheel. ...