Volume
► "Speed volume": speed-dependent volume
control.
► "PDC": volume of the PDC signal compared
to the entertainment sound output.
► "Gong": volume of the signal, e. g., the safety
belt reminder, compared to the entertainment
sound output.
► "Microphone": volume of the microphone
during a phone call.
► "Loudspeak.": volume of the loudspeakers
during a phone call.
The following volumes are only stored for the
respective paired telephone: "Microphone",
"Loudspeak.".
Adjusting the volume
1. "CD/Multimedia", "Radio" or "Settings"
2. "Tone"
3. "Volume settings"
4. Select the desired volume setting.

5. To adjust: turn the controller.
6. To store: press the controller.
See also:
Office
Vehicle equipment
All standard, country-specific and optional
equipment that is offered in the model series is
described in this chapter. Therefore, equipment
is also described that is not avai ...
Reporting safety defects
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 ...
Socket for OBD OnboardDiagnosis
Position
There is an OBD socket on the driver's side for
checking the primary components in the vehicle
emissions.
Emissions
► The warning lamp lights up:
Emissions are deteriorati ...
