The audio settings let you adjust the volume of the display touch-screen buttons and the alarm sound. On a data page, touch the screen to enter Navigation mode. Press Menu > Audio. On the Audio settings page, increase or decrease the volume: To increase volume, press +. To decrease volume, press −. The lowest volume setting available is the 1 % level. To turn off the sounds completely, press Mute. Volume adjustment is disabled and Mute changes to Unmute. To turn on the sound again, press Unmute. Related conceptsAlarm soundPossible problem situations