See also:

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. ...

Electrical system
General information 12 volt system with a voltage-regulated alternator. Single pole system in which the chassis and engine block are used as conductors. The negative terminal is connected to the ...

Warning symbols on the battery
NOTE A used battery should be disposed of in an environmentally responsible manner. Consult your Volvo retailer or take the battery to a recycling station. ...