See also:

Input volume
Adjust the input volume in the RSE menu, under A/V AUX input volume. ...

How do states use OBD II for emission inspections?
Many states connect a computer directly to a vehicle's OBD II system. The inspector can then read "faults." In some states, this type of inspection has replaced the tailpipe emission ...

Pause
When the audio system volume is turned off completely, the player will pause and will resume playing when the volume is turned up again. ...