Power switch and volume control
Subaru Legacy / Subaru Legacy Owners Manual / Audio / Power and sound controls / 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 pressing the dial, and the volume is controlled by turning the dial.
See also:
AM selection
Press the “AM” button when the radio is on to select AM reception. ...
Checking air conditioning system before summer season
Check the air conditioner unit for refrigerant leaks, hose conditions, and proper
operation each spring. Have the air conditioning system checked by your SUBARU dealer. ...
Acc
In this position the electrical accessories (radio, accessory power outlet, etc.)
can be used. ...
