2003 MERCEDES-BENZ C320 COUPE radio

167 Controls in detail
Audio system
Scan tuning

Starting scan tuning
Select the desired frequency band.

Press the
2
button.
SC will appear on the display. The
radio briefly tunes into all receiv-
able stations on the band selected.
The first scan will tune only the sta-
tions with a strong signal. The sec-
ond scan will tune every receivable
station.


Ending scan tuning
Press the
2
button or the
d
,
c
, f
or
e
button.
SC disappears from the display.Station memory
You can store 10 AM and 10 FM stations.


Storing stations
Tune in the desired station.

Press and hold the desired station
button 1 to 0 until a brief signal
tone is heard.
The frequency is stored on the se-
lected station button.


Retrieving a station from memory
Press the desired station button 1
to 0.
Storing stations automatically
(Autostore)
The Autostore memory function provides
an additional memory level. The station
m e m o r y f o r m a n u a l l y s t o r e d s t a t i o n s i s n o t
erased.


Calling up the Autostore memory level
Briefly press the
AS key.
AS appears on the display in in-
versed-color format.
The radio finds the 10 stations with
the strongest signals. These sta-
tions are stored on the station but-
tons 1 to 0 in the order of signal
strength.


Retrieving a station from memory
Press the desired station button 1
to 0.


Leaving the Autostore memory level
Press the
AS key.
AS appears on the display in in-
versed-color format.

168 Controls in detailAudio systemWeather band
Press the
WB key.
The last weather band station is tuned
in.

Select the desired weather band sta-
tion with buttons 1 to 7.
If a station cannot be tuned in, a scan
is automatically started.

Press the
f
or
e
button. The
next receivable weather band station is
tuned in.
Cassette mode
Playing cassettes
Press the
3
button.
The display folds down and the cas-
sette slot becomes visible.

Press the cassette into the slot until it
engages and tap it gently.
The cassette will be pulled in automati-
cally. The system switches to cassette
mode (
TAPE
). Track 1 will be played and
SIDE 1
appears in the display. Track 1
is the side of the cassette which is fac-
ing upward. The cassette deck will au-
tomatically detect the type of tape.

Fold the display back up and press gen-
tly on the display frame to lock in place.
or

If a cassette is already in the mecha-
nism, press the
j
button.
Track selection

Press the
TRK
key.
Upon selection of the track, the display
shows
SIDE 1
or
SIDE 2
corresponding-
ly.

You can switch track sides at any time.
The track side will be changed auto-
matically at the end of the tape.
iDo not press directly on the display
face.
iA warning signal will sound after 20
seconds if the display is left in the
down position. If the display is not
closed, a warning signal will sound and
the radio will be muted.

169 Controls in detail
Audio system
Cassette eject
Press the eject button
3
.
The display will fold down and the cas-
sette will be ejected. The system will
switch back to radio mode automatical-
ly.

Fold the display back up.Track search
Track search forward

Press the
f
button.
SEEK FWD
will appear in the display. The
track search will run the tape forward
to the start of the next track and switch
to play.Track search backward

Press the
e
button.
SEEK RWD
will appear on the display.
The track search will run the tape back-
ward to the start of the track currently
playing and switch to play.
Stopping track search

Press the
d
, c
, f
or
e

button.
The cassette will switch over to Play.
iThe cassette will not be ejected when
the system is switched off or switched
to another operating mode.
iThe cassette will not be ejected when
the system is switched off or switched
to another operating mode.

172 Controls in detailAudio systemCD changer* operating mode
General notes
Should excessively high temperatures oc-
cur while in CD mode,
CD TEMP HIGH
will
appear on the display and muting will take
pl ace . The uni t wil l then s witch ba ck to the
last operating mode used until the temper-
ature has decreased to a safe operating
level.
Should excessively low temperatures oc-
cur while in CD mode,
CD TEMP LOW
will ap-
pear on the display, but the CD will
continue to play.
Handle CDs carefully to prevent interfer-
ence during playback. Avoid fingerprints
and dust on CDs. Do not write on CDs or
apply any label or other material to them.
Use only original CDs. Using copied CDs
may create problems during playback.Clean CDs from time to time with a com-
mercially available cleaning cloth. No sol-
vents, anti-static sprays, etc. should be
used for cleaning. Replace the CD in its
case after use. Protect CDs from heat and
direct sunlight.
Only use CDs, which bear the label shown
and that conform to the compact disc dig-
ital audio standard (IEC 60908).
Use of CDs which do not meet this stan-
dard may cause damage to the CD chang-
er. Do not play single-CDs (80 mm) with an
adapter.Operational readiness of CD changer
If a CD changer has been installed in the
system, it can be operated from the front
control panel of the radio. A loaded maga-
zine must be installed for CD playing.
Loading/unloading the CD magazine

Slide the changer door to the right and
press the eject button
3
.

The magazine will be ejected.Warning!
G
The CD changer* is a Class 1 laser product.
There is a danger of invisible laser radiation
if the cover is opened or damaged.
Do not remove the cover. The CD changer*
does not contain any parts which can be ser-
viced by the user. For safety reasons, have
any service work which may be necessary
performed only by qualified personnel.


176 Controls in detailAudio systemTelephone* operation
Various car telephone functions and oper-
ating steps for the car telephone can be
performed and displayed via the audio sys-
tem.
Further operating instructions not covered
here can be found in the operating instruc-
tions for the multifunction steering wheel,
voice control system* and the car tele-
phone.
Switching on the telephone
Press the
h
button.

If you have programmed an unlock
code for the telephone, you must input
the code now.

Press the
OK key.
The telephone is unlocked. If you enter
the wrong code, you must re-enter the
correct code.Switching off the telephone

Press the
h
button repeatedly until
PHONE OFF
appears in the display.
The receiving symbol in the display dis-
appears.
Adjusting the volume

Turn control knob
a
during tele-
phone operation.
The volume increases or decreases de-
pending on the direction in which the
knob is turned.Placing a call
Entering a telephone number and start-
ing the dialing process

Enter the desired telephone number
using buttons 1 to 0.
The number can have up to 32 digits,
but only 17 of these are visible on the
display.

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

After the correct telephone number
has been entered, press the
SND
key.
iThe volume can be adjusted separately
for the telephone, voice control
system* and radio.

180 Controls in detailAudio systemAccepting an incoming call
Accepting an incoming call in telephone
mode
With an incoming call, a ringing tone can
be heard and the caller’s telephone num-
ber, or the name under which this tele-
phone number has been saved in the
telephone book, appear on the display. If
the caller’s number is not transmitted, CALL
will appear in the display.

Press the
SND
key to accept the call.Accepting an incoming call in cassette,
CD or radio mode
If the telephone is activated in the back-
ground (receiving symbol
S visible on dis-
play), the audio source is muted when a
call is received. The ringing tone is heard
and the caller’s telephone number or the
name under which this telephone number
has been saved in the telephone book ap-
pear on the display. If the caller’s number
is not transmitted,
CALL
appears in the dis-
play.

Press the
SND
key to accept the call.Muting a call
It is possible to silence a call, the caller is
then no longer able to hear you.
Muting

Press the
MUT
key.
Unmuting

Press the
MUT
key again.
Terminating a call

Press the
END
key.

The current call is disconnected.

200 Controls in detailUseful featuresTelephone*
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.You can take and place telephone calls us-
ing the
í
and
ì
buttons on the
steering wheel. To carry out other tele-
phone functions, use the control system
(
page 126).
See separate operating manual for instruc-
tions on how to use the telephone.
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
cellular telephone while driving a vehicle.
Only operate the COMAND* (Cockpit Man-
agement and Data System)
1 if road, weather
and traffic conditions permit.
1Observe all legal requirements.
Bear in mind that at a speed of just 30 mph
(approximately 50 km / h), your vehicle is
covering a distance of approx. 44 feet (ap-
proximately 13.5 m) every second.Warning!
G
Some jurisdictions prohibit the driver from
using a cellular telephone while driving a ve-
hicle. Whether or not prohibited by law, for
safety reasons, the driver should not use the
cellular telephone while the vehicle is in mo-
tion.
Stop the vehicle in a safe location before an-
swering or placing a call.

208 Controls in detailUseful features
Remote door unlock
In case you have locked your vehicle unin-
tentionally (e.g. key inside vehicle), and the
reserve key is not handy:
Contact the Mercedes-Benz Response
Center at 1-800-756-9018 (in the USA)
or 1-888-923-8367 (in Canada).
You will be asked to provide your pass-
word which you provided when you
completed the subscriber agreement.

Then return to your vehicle and pull the
trunk lid recessed handle for minimum
of 20 seconds until the “SOS” button is
flashing.
The message
EMERGENCY CALL –
CALL CONNECTED appears in the multi-
function display.
As an alternative, you may unlock the vehi-
cle via Internet using the ID and password
sent to you shortly after the completion of
your acquaintance call.T h e R e s p o n s e C e n t e r w i l l t h e n u nl o c k y o u r
vehicle with the remote door unlocking
feature.
iWhen a Tele Aid call has been initiated,
the audio system or the COMAND* sys-
tem audio is muted and the selected
mode (radio, tape or CD) pauses. The
optional cellular phone (if installed)
switches off. If you must use this
phone, the vehicle must be parked. Dis-
connect the coiled cord and place the
call. The COMAND* navigation system
(if engaged) will continue to run. The
display in the instrument cluster is
available for use and spoken com-
mands are only available by pressing
the RPT button on the COMAND* unit.
A pop-up window will appear in the CO-
MAND* display to indicate that a
Tele Aid call is in progress.
iThe remote door unlock feature is avail-
able if the relevant cellular phone net-
work is available.
The “SOS” button will flash and the
message
EMERGENCY CALL –
CALL CONNECTED
will appear in the mul-
tifunction display to indicate receipt of
the door unlock command.
Once the vehicle is unlocked, a Re-
sponse Center specialist will attempt
to establish voice contact with the ve-
hicle occupants.
If the trunk lid recessed handle was
pulled for more than 20 seconds be-
fore door unlock authorization was re-
ceived by the Response Center, you
must wait 15 minutes before pulling
the trunk lid recessed handle again.