You can operate certain functions of the audio system using the steering wheel controls.
Left selector wheel: Roll up or down to adjust volume. Press to mute. Move (or hold) left or right to change stations or tracks.
Move right or left for the next or previous station. Move and hold right or left for the next or previous strong station.
Move right or left for the next or previous track. Move and hold right or left for the next or previous folder (CD/USB).
Move right for the next song. Move and hold right or left for the next or previous station.