See also:

Sound output
Switching on/off When the ignition is switched off: press ON/OFF button on the radio. Muting When the ignition is switched on or the engine is running: press the ON/OFF button on the radio. ...

Safety
Neither the Insurance Institute for Highway Safety nor the National Highway Traffic Safety Administration has tested the 2007 X3. Standard safety features include four-wheel-disc antilock brakes, ...

CD/multimedia
CD/DVD When the same audio source (front CD/DVD player, rear CD/DVD player, DVD changer) is selected in the front and rear, the same material is played. Operation is the same as for the front ...