From your Audio system control panel, you can:

press the "MENU" button to gain access to the general menu ,
press the "  " or "  " buttons to scroll through the items on the screen,
press the "MODE" button to change the permanent application (trip computer, audio source...),
press the "  " or "  " buttons to change a setting value,
press the "OK" button to confi rm, or
press the "ESC" button to abandon the operation in progress.