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. ...

For US customers
The following only applies to vehicles owned and operated in the US. If you believe that your vehicle has a defect which could cause a crash or could cause injury or death, you should immediate ...

Example: playing back a CD
1. Switch on the Entertainment sound output if necessary. 2. Press the button on the steering wheel. 3. ›C D and multimedia‹ The medium last played is played back. 4. Press the button on the ...