2007 MERCEDES-BENZ C350 4MATIC radio

201 Controls in detail
Audio system
The radio saves the current station at
the memory preset selected. The
memory preset selected appears in the
status line, e.g. S3.
Calling up the ESN information menu
Press INF soft key.
Press ESN soft key.
The twelve-digit electronic serial
number (ESN) of the SAT tuner*
installed in your vehicle is displayed.
Press RET soft key to exit the menu.
CD mode
Safety precautions
General notes
The system may not be able to play audio
CDs with copy protection.
Playing copied CDs may cause
malfunctions during playback.
iThere are ten presets available.
An existing entry is overwritten in the memory
list when a new entry is given.Warning!G
The single CD player and the CD changer*
are Class 1 laser products. There is a danger
of invisible laser radiation if the housing is
opened or damaged.
Do not open the housing. The single CD
player and the CD changer* do not contain
any parts that can be serviced by the user.
For safety reasons, have any service work
which may be necessary performed only by
qualified personnel.
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 be-
come 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.

212 Controls in detail
Audio system

Speed dial
If you have stored telephone numbers
as speed dial numbers in your
telephone, you can also enter these
with buttons 1 to R on the radio
head unit.
Press desired button 1 to R
briefly.
Press s button.
The call will be made.

Turbo dial
If you have stored telephone numbers
as turbo dial numbers in your
telephone, you can also enter these
with buttons 1 to R on the radio
head unit.
Press desired button 1 to R
until the call is made.Redial
If the number you have dialed is busy, you
can again place calls to the last ten
telephone numbers dialed using the redial
function.

Manual redial
Press s button.
The telephone number last dialed
will appear in the display.
Select desired telephone number
with button ‚ or ƒ.The letter
L and the number of the
memory position appears in the
left-hand corner of the display. The
numbers are stored in the order of
the calls received.
When you have selected a number,
press s button.
The call will be made.
Accepting an incoming call
If the telephone is active in the background
(reception symbol is visible in the display),
the audio source is muted when an incom-
ing call is received. A ringing tone can be
heard and the caller’s telephone number,
or the name under which the telephone
number has been saved in the phone book,
appears in the display. If the caller’s
number is not transmitted with the call,
CALL will appear in the display.
Press s button.
The call is accepted.
iIf you have activated the automatic redial
function on your telephone, the number of the
person being called is automatically redialed af-
ter a short waiting period if there is a busy signal.
Refer to the separate operating instructions for
the mobile telephone.

217 Controls in detail
Audio system

Speed dial
If you have stored telephone numbers
as speed dial numbers in your
telephone, you can also enter these
with buttons 1 to R on the radio
unit.
Press desired button 1 to R
briefly.
Press s button.
The call will be made.

Turbo dial
If you have stored telephone numbers
as turbo dial numbers in your
telephone, you can also enter these
with buttons 1 to R on the radio
unit.
Press desired button 1 to R
until the call is made.Redial
If the number you have dialed is busy, you
can again place calls to the last ten
telephone numbers dialed using the redial
function.

Manual redial
Press s button.
The telephone number last dialed
will appear in the display.
Select desired telephone number
with button ‚ or ƒ.
The letter
L and the number of the
memory position appears in the
left-hand corner of the display. The
numbers are stored in the order of
the calls received.
When you have selected a number,
press s button.
The call will be made.
Accepting an incoming call
If the telephone is active in the background
(reception symbol is visible in the display),
the audio source is muted when an incom-
ing call is received. A ringing tone can be
heard and the caller’s telephone number,
or the name under which the telephone
number has been saved in the telephone
book, appears in the display. If the caller’s
number is not relayed,
CALL will appear in
the display.
Press s button.
The call is accepted.
iIf you have activated the automatic redial
function on your mobile telephone, the number
of the person being called is automatically redi-
aled after a short waiting period if there is a busy
signal.
Refer to the separate operating instructions for
the mobile telephone.

244 Controls in detail
Useful features
Telephone*
Radio transmitters, such as a portable tele-
phone or a citizens band unit, should only
be used inside the vehicle if they are con-
nected to an antenna that is installed on
the outside of the vehicle.
The external antenna must be approved by
Mercedes-Benz. Please contact an autho-
rized Mercedes-Benz Center for informa-
tion on the installation of an approved
external antenna. Refer to the radio trans-
mitter operation instructions regarding use
of an external antenna.When the mobile phone is inserted in the
cradle, you can operate the telephone us-
ing the following devices:

mobile phone keypad

COMAND* (see separate operating in-
structions)

buttonss andt on the multi-
function steering wheel (
page 122)

audio system (page 208)
Warning!G
Never operate radio transmitters equipped
with a built-in or attached antenna (i.e. with-
out being connected to an external antenna)
from inside the vehicle while the engine is
running. Doing so could lead to a malfunc-
tion of the vehicle’s electronic system, pos-
sibly resulting in an accident and/or serious
personal injury.
Warning!G
Please do not forget that your primary re-
sponsibility is to drive the vehicle. A driver’s
attention to the road must always be
his/her primary focus when driving. For
your safety and the safety of others, we rec-
ommend that you pull over to a safe location
and stop before placing or taking a tele-
phone call.
If you choose to use the telephone
1 while
driving, please use the hands-free device
and only use the telephone when road,
weather and traffic conditions permit. Some
jurisdictions prohibit the driver from using a
mobile telephone while driving a vehicle.
Only operate the COMAND*
1 if road, weath-
er and traffic conditions permit.
Bear in mind that at a speed of just 30 mph
(approximately 50 km/h), your vehicle is
covering a distance of 44 feet (approximate-
ly 14 m) every second.
1Observe all legal requirements.
iVarious mobile phone cradles can be in-
stalled in the front center armrest, see separate
installation instructions for the mobile phone
cradle. These mobile phone cradles can be ob-
tained from an authorized Mercedes-Benz Cen-
ter.
The functions and services available to you while
using the mobile phone depend on your service
provider and the type of mobile phone you are
using. See also separate operating manual for in-
structions on how to use your mobile phone.

248 Controls in detail
Useful 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 m
alfunction Visit workshop
appears in the multifunction display.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 249) 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.
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) paus-
es. 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 standstill in a safe location.
Remove the phone from the cradle and place the
call. The navigation* system (if engaged) will
continue to run. The multifunction display in the
instrument cluster is available for use, and spo-
ken commands are only available by pressing the
RPT button on audio system or COMAND* Sys-
tem unit. A pop-up window will appear in the au-
dio system or COMAND* System unit display to
indicate 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 Visit 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.

256 Controls in detail
Useful features
Step 8:
Locate “training” button on the garage
door opener motor head unit.
Exact location and color of the button
may vary by garage door opener brand.
Depending on manufacturer, the
“training” button may also be referred
to as “learn” or “smart” button. If there
is difficulty locating the transmitting
button, refer to the garage door opener
Operator’s Manual.
Step 9:
Press the “training” button on the ga-
rage door opener motor head unit.
The “training light” is activated.
You have 30 seconds to initiate the
following step.
Step 10:
Return to the vehicle and firmly press,
hold for 2 seconds and release the pro-
grammed signal transmitter button
(2, 3 or4).Step 11:
Press, hold for 2 seconds and release
same signal transmitter button a sec-
ond time to complete the training
process.
Step 12:
Confirm the garage door operation by
pressing the programmed signal trans-
mitter button (2, 3 or4).
Step 13:
To program the remaining two signal
transmitter buttons, repeat the steps
above starting with step 3.Gate operator/Canadian programming
Canadian radio-frequency laws require
transmitter signals to “time-out” (or quit)
after several seconds of transmission
which may not be long enough for the
integrated signal transmitter to pick up the
signal during programming. Similar to this
Canadian law, some U.S. gate operators
are designed to “time-out” in the same
manner.
If you live in Canada or if you are having
difficulties programming a gate operator
(regardless of where you live) by using the
programming procedures, replace step 4
with the following:
Step 4:Press and hold the signal transmitter
button (2, 3 or4). Do not release
this button until it has been successful-
ly trained.
While still holding down the signal
transmitter button (2, 3 or4),
“cycle” your hand-held remote control
button6 as follows: Press and hold
iSome garage door openers (or other rolling
code equipped devices) may require you to
press, hold for 2 seconds and release the same
signal transmitter button a third time to com-
plete the training process.

258 Controls in detail
Useful features
Programming tips
If you are having difficulty programming
the integrated remote control, here are
some helpful tips:

Check the frequency of hand-held re-
mote control5 (typically located on
the reverse side of the remote). The in-
tegrated remote control is compatible
with radio-frequency devices operating
between 280-390 MHz.

Put a new battery in hand-held remote
control5. This will increase the likeli-
hood of the hand-held remote control
sending a faster and more accurate sig-
nal to the integrated remote control.

While performing step 3, hold
hand-held remote control5 at differ-
ent lengths and angles from the signal
transmitter button (2, 3 or4) you
are programming. Attempt varying an-
gles at the distance of 2 to 5 inches
(5 to 12 cm) away or the same angle at
varying distances.

If another hand-held remote control is
available for the same device, try the
programming steps again using that
other hand-held remote control. Make
sure new batteries are in the hand-held
remote control before beginning the
procedure.

Straighten the antenna wire from the
garage door opener assembly. This
may help improve transmitting and/or
receiving signals.
iCertain types of garage door openers are in-
compatible with the integrated remote control. If
you should experience further difficulties with
programming the integrated remote control,
contact an authorized Mercedes-Benz Center, or
call Mercedes-Benz Customer Assistance
Center (in the USA only) at
1-800-FOR-MERCedes, or Customer Service (in
Canada) at 1-800-387-0100.
iUSA only:
This device complies with Part 15 of the
FCC Rules. Operation is subject to the following
two conditions:
(1) This device may not cause harmful interfer-
ence, and
(2) this device must accept any interference re-
ceived, including interference that may
cause undesired operation.
Any unauthorized modification to this device
could void the user’s authority to operate the
equipment.
iCanada only:
This device complies with RSS-210 of Industry
Canada. Operation is subject to the following
two conditions:
(1) This device may not cause interference, and
(2) this device must accept any interference re-
ceived, including interference that may
cause undesired operation of the device.
Any unauthorized modification to this device
could void the user’s authority to operate the
equipment.

268 Operation
Driving instructions
Standing waterPassenger compartment
Driving abroad
Abroad, there is an extensive
Mercedes-Benz service network at your
disposal. If you plan to drive into areas
which are not listed in the index of your
Mercedes-Benz Center directory, you
should request pertinent information from
an authorized Mercedes-Benz Center.Control and operation of radio
transmitters
COMAND*, radio and telephone*
!Do not drive through flooded areas or water
of unknown depth. Before driving through water,
determine its depth. Never accelerate before
driving into water. The bow wave could force wa-
ter into the engine and auxiliary equipment, thus
damaging them.
If you must drive through standing water, drive
slowly to prevent water from entering the pas-
senger compartment or the engine compart-
ment. Water in these areas could cause damage
to electrical components or wiring of the engine
or transmission, or could result in water being in-
gested by the engine through the air intake caus-
ing severe internal engine damage. Any such
damage is not covered by the Mercedes-Benz
Limited Warranty.
Warning!G
Always fasten items being carried as
securely as possible.
In an accident, during hard braking or sud-
den maneuvers, loose items will be thrown
around inside the vehicle, and cause injury
to vehicle occupants unless the items are
securely fastened in the vehicle.
The trunk is the preferred place to carry
objects.
Warning!G
Please do not forget that your primary
responsibility is to drive the vehicle safely.
Only operate the COMAND (Cockpit
Management and Data System), radio or
telephone
1 if road, weather and traffic
conditions permit.
Bear in mind that at a speed of just 30 mph
(approximately 50 km/h), your vehicle is
covering a distance of 44 feet
(approximately 14 m) every second.
1Observe all legal requirements.