33 At a glance
Quick reference COMAND
A common volume setting is provided for
Radio, Single CD, MP3, CD changer*, AUX
and Satellite radio* operating modes.
When setting the volume, the system auto-
matically stores the setting for the current-
ly active operating mode. The volume of
navigation announcements can be
changed only during an actual announce-
ment.
Setting the volume
Turn the rotary control located on
the COMAND control unit,
or
Pressæ or ç on the multifunc-
tion steering wheelThe volume changes up or down, de-
pending on the direction of rotation or
which button was pressed.
The system stores the volume settings
when the device is switched OFF.
After switching the system back on again,
the volume may be lower than at the time
when the system was switched OFF.
This could be the case if
the system was switched OFF for more
than 15 minutes, and
the volume had been set to a value in a
certain range at the time the device
was switched OFF.Automatic volume control
The automatic volume control adjusts the
volume depending on
the vehicle’s speed (only in vehicles
without sound-system*),
or on
the interior ambient noises of the vehi-
cle (only in vehicles with sound-sys-
tem*)
other parameters (e.g. windows open
or closed)
97 Telephone*
Important notes
Please read chapter “Telephone*” be-
fore attempting to operate your tele-
phone.
Always drive with extreme caution
when operating the telephone hands-
free.
For safety reasons, the mobile tele-
phone handset should not be used to
place or receive a call while driving.
If the signal is very weak (display in the
status bar):
Wait until reception improves before
placing a call.
Close the windows and reduce all ex-
ternal noise as much as possible when
using hands-free operation.
i
This Operator's Manual describes op-
eration of the telephone using the
COMAND control unit and the multi-
function steering wheel. Unless other-
wise specified, the descriptions and
the illustrated displays refer to the
COMAND control unit.
Operation of the cellular phone is ex-
plained in a separate operation guide.
!
Radio transmitters, such as a portable
telephone or a citizens band unit,
should only be used inside the vehicle if
they are connected to a separate exte-
rior antenna approved by Mercedes-
Benz.
