2003 MERCEDES-BENZ C320 COUPE warning

157 Controls in detail
Automatic climate control* (Canada only)
Air conditioning
The air conditioning is operational while
the engine is running and cools the interior
air to the temperature set by the operator.
Deactivating
It is possible to deactivate the air condi-
tioning (cooling) function of the automatic
climate control system. The air in the vehi-
cle will then no longer be cooled or dehu-
midified.
Press buttonAC
OFF
(page 151).
The indicator lamp on the
buttonAC
OFF
lights up.Activating
Moist air can fog up the windows. You can
dehumidify the air with the air condition-
ing.

PressAC
OFF
again (
page 151).
The indicator lamp on the
buttonAC
OFF
goes out.
The air conditioning system uses the refrig-
erant R134a. This refrigerant is free of
CFCs which are harmful to the ozone layer.
Warning!
G
Any accumulation of snow and ice should be
removed from the rear window before driv-
ing. Visibility could otherwise be impaired,
endangering you and others.!If the rear window defroster switches
off too soon and the indicator lamp
starts blinking, this means that too
many electrical consumers are operat-
ing simultaneously and there is insuffi-
cient voltage in the battery. The system
responds automatically by deactivating
the rear window defroster.
As soon as the battery has sufficient
voltage, the rear window defroster au-
tomatically turns itself back on.
iCondensation may drip out from under-
neath the vehicle. This is normal and
not an indication of a malfunction.
!If the air conditioning cannot be turned
on again, this indicates that the air con-
ditioning system is losing refrigerant.
The compressor has turned itself off.
Have the air conditioning system
checked at the nearest authorized
Mercedes-Benz Center.

159 Controls in detail
Audio system
Audio system
Audio and telephone, operation
These instructions are intended to help
you become acquainted with your
Mercedes-Benz car radio. They contain
useful tips and a detailed description of the
user functions.
Operating safety
Warning!
G
In order to avoid distraction which could
lead to an accident, system settings should
be entered with the vehicle at standstill and
systems should be operated by the driver
only when traffic conditions permit. Always
pay full attention to traffic conditions first
before operating system controls while driv-
ing.
Bear in mind that at a speed of just 30 mph
(approximately 50 km / h), your car is cover-
ing a distance of approximately 44 feet (ap-
proximately 13.5 m) every second.
1
1The right to correct errors and make technical
amendments is reserved.
Warning!
G
Any alterations made to electronic compo-
nents can cause malfunctions.
The radio, cassette deck, CD changer*, tele-
phone* and voice control system* are inter-
connected. When one of the components is
not operational or has not been
removed / replaced properly, the function of
other components may be impaired.
This condition might seriously impair the op-
erating safety of your vehicle.
We recommend that you have any service
work on electronic components carried out
by an authorized Mercedes-Benz Center.

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.

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.


182 Controls in detailPower windows
Power windowsOpening and closing the windows
The side windows can be opened and
closed electrically. The switches for all the
side windows are on the driver’s door. The
switch for the front passenger side is on
the front passenger door.
1Left front window
2Right front window

Turn key in the starter switch to
position1 or2.
Opening the windows

Press switch to resistance point.
The window will move downwards until
you release the switch.
Closing the windows

Pull on switch to resistance point.
The window will move upwards until
you release the switch.
Warning!
G
When closing the windows, make sure that
there is no danger of anyone being harmed
by the closing procedure.
The closing of the door windows can be im-
mediately halted by releasing the switch, or,
if switch was pulled past the resistance
point and released, by either pressing or
pulling the respective switch.
If the window encounters an obstruction
that blocks its path in a circumstance where
you pulled the switch past the resistance
point and released it to close the window,
the automatic reversal function will stop the
window and open it slightly.
If the window encounters an obstruction
that blocks its path in a circumstance where
you are closing the window by pulling the
switch and holding it there, or by pressing
and holding the button
‹
on the Smart-
Key, the automatic reversal function will not
operate.
When leaving the vehicle, always remove the
key from starter switch and lock your vehi-
cle. Do not leave children unattended in the
vehicle, or with access to an unlocked vehi-
cle. Unsupervised use of vehicle equipment
may cause an accident and/or serious per-
sonal injury.

183 Controls in detail
Power windows
If you pull and hold the switch up when
closing the window, and upward move-
ment of the window is blocked by some ob-
struction including but not limited to arms,
hands, fingers etc., the automatic reversal
will not operate.
Fully opening windows
Press switch past resistance point and
release.
The window opens completely.
Fully closing windows

Pull switch past resistance point and
release.
The window closes completely.
If the upward movement of the window is
blocked during the closing procedure, the
window will stop and open slightly.Stopping windows

Press or pull respective switch again.Opening and closing the windows with
the SmartKey
The panorama sliding/pop-up roof will also
be opened or closed when you operate the
power windows with the key.

Aim transmitter eye at the front door
handle.
Warning!
G
Driver’s door only:
If within five seconds you again pull the
switch past the resistance point and re-
lease, the automatic reversal will not func-
tion.iYou can also open or close the win-
dows using the:

SmartKey (summer opening/con-
venience feature), see below


button
O
in the control panel of
the climate control (
page 143)
Warning!
G
Never operate the windows or slid-
ing/pop-up roof if there is the possibility of
anyone being harmed by the opening or
closing procedure.
In case the procedure causes potential dan-
ger, the procedure can be immediately halt-
ed by releasing the remote control button.
To reverse direction of movement,
pressŒ for opening or ‹ for closing.

185 Controls in detail
Panorama sliding/pop-up roof*
Panorama sliding/pop-up roof*
Opening and closing the sunshades for the panorama sliding/pop-up roof
1To open sunshade
2To close sunshade
3To open sunshade
4To close sunshade
The sunshades only operate with panora-
ma sliding/pop-up roof closed.Opening and closing the sunshades

Turn the key in the starter switch to
position1 or2.

To open or close the sunshades, move
the switch to resistance point in the re-
quired direction.
Release the switch when the sun-
shades have reached the required posi-
tion.
Opening the sunshades automatically

Move the switch past resistance point
in direction1 and release.Stopping the sunshades

Move the switch in any direction.Warning!
G
When closing the sunshades, make sure
that there is no danger of anyone being
harmed by the closing procedure.

186 Controls in detailPanorama sliding/pop-up roof*Opening and closing the panorama slid-ing/pop-up roof
1Push back to slide roof open
2Push forward to slide roof closed
3Push up to raise roof at rear
4Pull down to lower roof at rear
The panorama sliding/pop-up roof only op-
erates with the sunshades opened.Opening and closing the panorama slid-
ing/pop-up roof

Turn the key in the starter switch to
position1 or2.

To open, close, raise or lower the pan-
orama sliding/pop-up roof, move the
switch to resistance point in the re-
quired direction.
Release the switch when the roof has
reached the required position.
Opening the panorama sliding/pop-up
roof automatically

Move the switch past resistance point
in direction1 and release.
The panorama sliding/pop-up roof will
not open completely.

Press the switch again to open it com-
pletely.
Stopping the panorama sliding / pop-up
roof

Move the switch in any direction.
Warning!
G
When closing the panorama sliding/pop-up
roof, make sure that there is no danger of
anyone being harmed by the closing proce-
dure.
The closing procedure of the panorama slid-
ing/pop-up roof can be immediately re-
versed by either pressing or pulling the
switch, or pressing button
Œ
on the key
and holding it.
When leaving the vehicle, always remove the
key from starter switch and lock your vehi-
cle. Do not leave children unattended in the
vehicle, or with access to an unlocked vehi-
cle. Unsupervised use of vehicle equipment
may cause an accident and/or serious per-
sonal injury.