See also:

Warning of people in danger
If the system detects a person in the defined area in front of the vehicle and if there is the danger of a collision with this person, a warning symbol appears in the Control Display and Hea ...

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 ...

Adjusting the volume
Turn the knob until the desired volume is selected. The setting is stored for the remote control currently in use. ...