Adjustable level of each mode
Subaru Impreza / Subaru Impreza Owners Manual / Audio / Power and sound controls / Adjustable level of each mode

*: For type A and B audio, AUX volume can be adjusted only when an AUX audio product is connected.
See also:
Mode selection
Turn the “TUNE/TRACK/CH” dial and
select the HD Radio ON mode (hybrid
mode) or OFF mode (analog mode). ...
When CD is in the player (type A)
When the button is pressed, the
player will start playback. ...
Fuel
Use of a fuel which is low in quality
or use of an inappropriate fuel
additive may cause engine damage. ...
