See also:

Turning ACC off completely
From standby mode, press once. From active mode, press twice. The set speed and time interval are then cleared from the system's memory and cannot be resumed by pressing . ...

Activation
PAC is activated when the gear selector is moved to R if the system is selected in the MY CAR menu system or by pressing the CAM button in the center console. See page 133 for a description ...

Steering wheel keypad
The four buttons on the steering wheel keypad can be used to control the audio system. The steering wheel keypad can be used to adjust volume, shift between preset stations and change CD tracks. ...