See also:

DISC Button
Pressing the DISC button will allow you to switch from AM/FM modes to Disc modes. ...

Extreme Cold Weather (Below –20°F Or –29°C)
To ensure reliable starting at these temperatures, use of an externally powered electric engine block heater (available from your authorized dealer) is recommended. ...

TIME Button (Auxiliary Mode)
Press this button to change the display to time of day. The time of day will display for five seconds (when the ignition is OFF). ...