2006 MERCEDES-BENZ C280 ECO mode

204 Controls in detailAudio systemAdjusting treble
Press O button repeatedly until TREBLE
appears in the display.

Press
+ or
– soft key to increase or
decrease tone level accordingly.
or

Press
RES
soft key briefly to reset treble
tones to their center level.
The radio switches back to the
standard radio menu 8 seconds after
the last soft key is pressed.Sound system*
You can either program the sound settings
manually (
page 203) or choose settings
via preset sound characteristics.
You can select from among the following
settings:


STANDARD
: conventional stereo sound.


SURROUND
: the sound is set for better
three-dimensional acoustic character-
istics.


SPEECH
: the sound is optimized for the
spoken word.

Press O button repeatedly until STANDARD
, SURROUND
, or
SPEECH
appears
in the display.

Press X or Y soft key repeatedly
until the desired sound setting has
been reached.
The sound is set accordingly.
or

Press
RES
soft key briefly.
The sound setting is reset depending
on the sound source activated.


Radio mode:
STANDARD


CD/AUX mode:
SURROUND


Telephone:
SPEECH
The radio switches back to the
standard radio menu 8 seconds after
the last soft key is pressed.

205 Controls in detail
Audio system
Returning sound functions to factory
settings
Press O button to call up settings
menu in the display.

Press
RES
soft key briefly; the respec-
tive sound function is reset to its center
level.
or

Press and hold
RES
soft key until
RESET

appears in the display.
The sound settings for bass and treble
are returned to their center level and
the volume is set to a predefined level.Vehicles with sound system*:
The sound setting is reset depending
on the sound source activated.


Radio mode:
STANDARD


CD/AUX mode:
SURROUND


Telephone:
SPEECH
The radio switches back to the
standard radio menu 4 seconds
after the last soft key is pressed.
Adjusting volume distribution
Call up fader and balance functions by
pressing the P button.
Fader

Press P button repeatedly until FADER
appears in the display.

Press V or W soft key.
The volume is distributed accordingly
between the front and rear of the
vehicle.
or

Press
RES
soft key briefly.
The fader is reset to its center level.
The radio switches back to the
standard radio menu 8 seconds after
the last soft key is pressed.

207 Controls in detail
Audio system
Connecting an external audio source
(AUX) to the radio*
An optional dealer-installed cinch-connec-
tor* for connecting an external audio
source may become available for your
vehicle model. Feature description is
based on preliminary information at time
of printing. Contact an authorized
Mercedes-Benz Center for availability.
You can adjust the volume (
page 203),
the sound settings (
page 203) and the
volume distribution (page 205) for the
AUX input.
Calling up AUX mode

Press and hold Q button until AUX
appears in the display.
Canceling AUX mode

Press any audio source button.
Radio operation
Selecting radio mode
Press b button.
Calling up wavebands
You can choose from among the FM, AM,
and WB wavebands.
Weather band (
page 210).Calling up wavebands for radios
without SAT

Press
FM or
AM soft key to switch
between FM and AM.
The FM and AM wavebands are called
up one after another.
or

Press
WB soft key.
The weather band menu is called up.
The waveband currently selected
appears in the upper left-hand corner
of the display.
iFM waveband: 87.7......107.9 MHz
AM waveband: 530......1 710 KHz

217 Controls in detail
Audio system
General notes
The system may not be able to play audio
CDs with copy protection.
Playing copied CDs may cause
malfunctions during playback.Do not use CDs with an 8 cm diameter, not
even with a CD adapter. Attempting to play
CDs with an 8 cm diameter or playing such
CDs with an adapter may cause damage to
the CD drive. Such damage is not covered
by the Mercedes-Benz Limited Warranty.
Should excessively high or low tempera-
tures occur while in CD changer mode*,
CD TEMP
will appear in the display, and the
CD will be muted until the temperature has
reached an acceptable level for the system
to continue operation.
The single CD player and the CD changer*
play audio CDs.
Warning!
G
In order to avoid distraction which could
lead to an accident, the driver should insert
CDs with the vehicle at a standstill and
operate the audio system only if permitted
by road, weather and traffic conditions.
Bear in mind that at a speed of just 30 mph
(approximately 50 km/h), your car covers a
distance of 44 feet (approximately 14 m)
every second.
!If you affix stickers to the CDs, they can
become warped due to the heat that
develops in the CD drive or
CD changer*.
In certain situations, the CDs can then
no longer be ejected and cause
damage to the drive. Such damage is
not covered by the Mercedes-Benz
Limited Warranty.!Your CD drive or CD changer* has been
designed to play CDs which
correspond to the EN 60908 standard.
You can therefore only use CDs with a
maximum thickness of 1.3 mm.
If you insert thicker data carriers, e.g.
ones that have data on both sides (one
side with DVD data, the other side with
audio data), they cannot be ejected and
will damage the drive.

219 Controls in detail
Audio system
Compatible bit and sampling rates
Fixed and variable bit rates of up to
320 kBit/s are possible.
The following table lists possible sampling
rates:Information on copyright
The music tracks that you create for use in
MP3 mode or that you play in MP3 mode
are subject to copyright laws under appli-
cable international and national regula-
tions.
In many countries, the reproduction of
copyrighted materials is not permitted,
even if only for personal use, without the
express prior consent of the copyright
holder.
Please check the current copyright laws
for your country and comply with them.
These restrictions do not apply, for exam-
ple, to your own compositions and record-
ings, or for recordings for which
authorization has been obtained from the
copyright holder.MP3 playback
You can play an MP3 CD on the
CD changer* as you would any standard
audio CD. All of the functions described for
the CD changer also apply for the playback
of MP3 CDs. Keep in mind that the single
CD player in the audio system unit is not
able to read MP3 CDs.
The first 99 tracks on the CD, including
tracks in subdirectories, are recognized
and played. Any additional tracks will not
be played.MPEG1
Audio Layer3
44.1 KHz, 48 KHz,
32 KHZ
MPEG2
Audio Layer3
22.5 KHz, 24 KHz,
16 KHz
MPEG2.5
Audio Layer3
11.025 KHz,
12 KHz, 8 KHz
WMA
32 KHz, 44.1 KHz,
48 KHz
iOnly use MP3 tracks with a bit rate of
128 kBit/s or higher and with the spec-
ified sampling rates.
The use of rates other than those spec-
ified may lead to noticeably inferior
sound quality.
iDue to the branched data structure,
playback of the first track may be de-
layed slightly.

232 Controls in detailAudio system
Press
OK soft key after entering correct
code.
The telephone is unlocked. If you have
entered an incorrect code, you must
enter the correct code.
Switching off the telephone

Press h button for approx.
3 seconds.PROCESSING
appears in the display until
the telephone is off. Afterward,
PHONE OFF
appears in the display.
Adjusting the volume

Turn rotary control of N button
during a telephone call.
The volume will increase or decrease
depending on the direction turned.Adjusting sound

Adjust sound during a telephone call.
Sound adjustment (
page 203).
Placing a call
Entering a telephone number and
starting the dialing process

Enter desired telephone number using
buttons 1 to R.
The number can have up to 32 digits,
but only twelve of these are visible in
the display.

If necessary, correct number entered
with the
CLR
soft key. Press soft key
briefly to delete the last digit entered;
press soft key and hold to delete the
complete number.

After correct telephone number has
been entered, press s button.
Phone book
The numbers stored in the phone book of
the mobile telephone can be called up
either by name or number.
In addition, incoming calls are stored in the
phone book.
iThe volume can be adjusted separately
for telephone mode and audio mode.
iIf the telephone number has been
saved together with a name in the
phone book, the name will appear in
the display.


266 Controls in detailUseful features
System self-check
Initially, after switching on ignition, mal-
functions are detected and indicated (the
indicator lamps in the SOS button, the
Roadside Assistance button• and the
Information button¡ stay on longer
than 10 seconds or do not come on). The
message
Malfunction. Drive to work-
shop
appears in the multifunction display.
iThe SOS button is located in the over-
head control panel.
The Roadside Assistance button•
and the Information button¡ are
located below the center armrest
cover.!The Tele Aid system utilizes the cellular
network for communication and the
GPS (G
lobal P
ositioning S
ystem) satel-
lites for vehicle location. If either of
these signals are unavailable, the
Tele Aid system may not function and if
this occurs, assistance must be sum-
moned by other means.
iWhen a Tele Aid call has been initiated,
the audio system or COMAND* System
unit is muted and the selected mode
(radio, tape or CD) pauses. The optional
cellular phone (if installed) and inserted
in cradle switches off. If you must use
this phone, we recommend that you
use it only with the vehicle at a stand-
still in a safe location. Remove the
phone from the cradle and place the
call. The navigation* system (if en-
gaged) will continue to run. The multi-
function display in the instrument
cluster is available for use, and spoken
commands are only available by press-
ing the RPT button on audio system or
COMAND* System unit. A pop-up win-
dow will appear in the audio system or
COMAND* System unit display to indi-
cate that a Tele Aid call is in progress.
After the TeleAid call has ended, the
optional cellular phone switches on
again. A PIN entry might be necessary.
Warning!
G
If the indicator lamps on the SOS button, on
the Roadside Assistance button, and/or on
the Information button remain illuminated
continuously in red and/or the message Malfunction. Drive to workshop
is
displayed in the multifunction display after
the system self-check, a malfunction in the
system has been detected.
If a malfunction is indicated as outlined
above, the system may not operate as
expected. Have the system checked at the
nearest Mercedes-Benz Center as soon as
possible.

267 Controls in detail
Useful features
Emergency calls
An emergency call is initiated automatical-
ly following an accident in which the emer-
gency tensioning devices (ETDs) or
air bags deploy.
An emergency call can also be initiated
manually by opening the cover next to the
interior rear view mirror labeled SOS, then
briefly pressing the button located under
the cover. See (
page 268) for
instructions on initiating an emergency call
manually.
Once the emergency call is in progress, the
indicator lamp on the SOS button will
begin to flash. The message
Connecting Call
appears in the multifunc-
tion display. When the connection is estab-
lished, the message
Call connected

appears in the multifunction display. All in-
formation relevant to the emergency, such
as the location of the vehicle (determined
by the GPS satellite location system), vehi-
cle model, identification number and color
are generated.A voice connection between the Response
Center and the occupants of the vehicle
will be established automatically soon af-
ter the emergency call has been initiated.
The Response Center will attempt to
determine more precisely the nature of the
accident provided they can speak to an
occupant of the vehicle.
The Tele Aid system is available if


it has been activated and is operation-
al. Activation requires a subscription
for monitoring services, connection
and cellular air time


the relevant cellular phone network
and GPS signals are available and pass
the information on to the response cen-
ter
iLocation of the vehicle on a map is only
possible if the vehicle is able to receive
signals from the GPS satellite network
and pass the information on to the
Response Center.Warning!
G
If the indicator lamp in the SOS button is
flashing continuously and there was no
voice connection to the Response Center
established, then the Tele Aid system could
not initiate an emergency call (e.g. the rele-
vant cellular phone network is not available).
The message
Call failed
appears in the
multifunction display for approximately
10 seconds.
Should this occur, assistance must be sum-
moned by other means.