See also:

Adjusting volume
Turn knob 1next to the CD/DVD player until the desired volume is obtained. You can also adjust the volume with buttons on the steering wheel. ...

Sound output via speakers
In addition to the headphones, you can also play the sound via the vehicle speakers. 1. "CD/Multimedia" 2. "External devices" 3. "AUX rear" 4. "Volume" 5 ...

Status display
The current status of the Flat Tire Monitor can be displayed on the Control Display, e.g., whether or not the FTM is active. 1. "Vehicle Info" 2. "Vehicle status" 3. " ...