See also:

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

Alarm
The alarm is automatically armed whenever you lock your vehicle. When armed, the alarm continuously monitors a number of points on the vehicle. The following conditions will set off the alarm: ...

Auxiliary sound level
If the external sound source's volume is too high, the quality of the sound may be impaired. This can be prevented by adjusting the external sound source's input volume. 1. While playing the ...