See also:

For AT models
This light flashes if the vehicle is driven with tires of different diameters fitted on its wheels or with the air pressure excessively low in any of its tires. ...

Other bulbs
Other bulbs may be difficult to replace. We recommend that you have the bulbs replaced by your SUBARU dealer if necessary. ...

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. ...