See also:

MUTE button (if equipped)
Press this button if you wish to immediately cut the volume to zero. The audio display will show “MUTE”. If you press the button again, the original sound volume will return and “MUTE” turns off. ...

Fuel
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Selecting category (only when connecting iPod®)
When the “LIST” button is pressed for less than 1.5 seconds, the iPod® menu is displayed. Each time you turn the “TUNE/TRACK/ CH” dial clockwise, the displayed category changes in the following seq ...