See also:

Adjusting the volume
Turn the knob until the desired volume is selected. The setting is stored for the remote control currently in use. The vehicle automatically adjusts the volume of the microphone on the telephon ...

Tone
Only treble and bass can be set in the rear for headphones. The settings are made separately for the left and right headphones. Operation is the same as for the front tone. ...

Reassigning individual programs
1. Switch on the ignition. 2. Hold the hand-held transmitter a distance of approx. 2 to 8 in/5 to 20 cm from the memory buttons. 3. Press the memory button of the universal remote control. 4. ...