See also:

VOLUME control switch
Push up or down the VOLUME control switch to increase or decrease the volume. Tuning switch Memory change (radio): Push up or down the tuning switch for less than 1.5 seconds to change the ne ...

To turn system off
Press the /OFF button. ...

Ending a call
To finish the call, perform one of the following procedures: ● Select the “Hang up” key on the “Call in Progress” display. ● Push the switch on the steering wheel. ...