See also:

Power switch and volume control
The dial is used for both power (ON/OFF) and volume control. The radio is turned ON and OFF by pushing the dial, and the volume is controlled by turning the dial. ...

U.S.-spec. models
1) Trip meter A/B selection and trip meter reset knob (page 3-6) 2) Tachometer (page 3-7) 3) Trip meter and odometer (page 3-6) 4) Speedometer (page 3-6) 5) Multi function display switching knob ...

Taking a phone call and declining an incoming call
To take a phone call: Press the OFF hook switch0 . To put an incoming call on hold: Press the ON hook switch briefly . To decline an incoming call: Press the ON hook switch for more than 1.5 sec ...