See also:

Putting ACC in standby mode
Before ACC can be used to regulate speed and/or the distance to a vehicle ahead, it must first be put in standby mode. To do so: Press . The symbol appears in the display and parentheses ( ...

Audio volume and automatic volume control
The infotainment system compensates for disrupting noises in the passenger compartment by increasing the volume according to the speed of the vehicle. The level of sound compensation can be set at ...

Call volume
Call volume can be only be adjusted during a call. Use the buttons in the steering wheel keypad or the infotainment system’s VOL control. ...