See also:

Safety switch for the rear
Press the button on the driver's door if children are being transported in the rear. This locks various functions so that they cannot be operated from the rear: safety switch. ...

Tone control
You can alter various tone settings, e.g. treble and bass or the speed-dependent volume increase. The tone settings are applied to all audio sources. The settings are stored for the remote control ...

Radio
When the same radio source is selected in the front and rear (e.g., FM/AM), the same radio station is played. Operation is the same as for the front radio. ...