key MERCEDES-BENZ C230 KOMPRESSOR 2003 W203 Repair Manual

141 Controls in detail
Automatic transmission*
Gear selector lever position
Effect
P
Park position
Selector position when the vehicle
is parked. Only place selector lever
in positionP when vehicle is
stopped. The park position is not in-
tended to serve as a brake when
the vehicle is parked. Rather, the
driver should always set the park-
ing brake in addition to placing the
selector lever in positionP to se-
cure the vehicle.
The key can only be removed from
the starter switch with the selector
lever in positionP. With the key re-
moved the selector lever is locked
in positionP.
Effect
R
Reverse gear
Place selector lever in positionR
only when vehicle is stopped.
N
Neutral
No power is transmitted from the
engine to the drive axle. When the
brakes are released, the vehicle
can be moved freely (pushed or
towed).
To avoid damage to the transmis-
sion, never engageN while driving.
If ESP is deactivated or malfunc-
tioning:
Only move selector lever toN if the
vehicle is in danger of skidding (e.g.
on icy roads).
D
Drive
The transmission shifts automati-
cally. All five forward gears are
available.
!Coasting the vehicle, or driving for any
other reason with selector lever inN
can result in transmission damage that
is not covered by the Mercedes-Benz
Limited Warranty.Warning!
G
Getting out of your vehicle with the selector
lever not fully engaged in positionP is dan-
gerous. Also, positionP alone is not intend-
ed to or capable of preventing your vehicle
from moving, possibly hitting people or ob-
jects.
Always set the parking brake in addition to
shifting to positionP (
page 51).
When parked on an incline, turn the front
wheels towards the road curb.

142 Controls in detailAutomatic transmission*
Program mode selector switch
1Program mode selector switch
S Standard For regular driving
W Winter For winter driving

Press the program mode selector
switch repeatedly until the letter of the
desired shift program appears in the
multifunction display (
page 111).
Select
Wfor winter driving:


The vehicle starts out in second
gear (both forward and reverse) for
gentler starts. This does not apply if
full throttle is applied or gear
range1 is selected.


Traction and driving stability are im-
proved on icy roads.


Upshifts occur earlier even when
you give more gas. The engine then
operates at lower rpms and the
wheels are less likely to spin.


The power transmission ratio for se-
lector lever positionR changes de-
pending on the program mode
selected (
W or
S).
Warning!
G
When leaving the vehicle, always remove the
key from the starter switch, take it with you
and lock the vehicle. Do not leave children
unattended in the vehicle, or with access to
an unlocked vehicle. Children could move
the selector lever from positionP, which
could result in an accident and/or serious
injury.
!Never change the program mode when
the selector lever is out of positionP. It
could result in a change of driving char-
acteristics for which you may not be
prepared.

147 Controls in detail
Good visibility
Rear window sunshade*
The switch is located in the center console.
Turn the key to starter switch
position1 or2.

Press the switch briefly at1 to raise the
sunshade.

Press the switch briefly at2 to lower
the sunshade.
Always raise the sunshade fully for its sup-
port against the window frame.
Warning!
G
When operating the rear window sunshade,
ma ke s ur e th a t th er e is no da nge r o f an y o ne
being harmed by the raising or lowering pro-
cedure.
The raising or lowering procedure can be im-
mediately halted by briefly pressing the up-
per or lower half of the switch.
Briefly press upper or lower half of the
switch again to raise or lower the rear win-
dow sunshade completely.
Warning!
G
When leaving the vehicle, always remove the
SmartKey from starter switch, and lock your
vehicle. Do not leave children unattended in
the vehicle, or with access to an unlocked
vehicle. Unsupervised use of vehicle equip-
ment can cause an accident and/or serious
personal injury.

163 Controls in detail
Automatic climate control*
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
.
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.
The indicator lamp on the
buttonACOFF
goes out.
The air conditioning uses the
refrigerant R134a. This refrigerant is free
of CFCs which are harmful to the ozone
layer.
Residual heat and ventilation*
With the engine switched off, it is possible
to continue to heat or ventilate the interior
for up to 30 minutes. This feature makes
use of the residual heat produced by the
engine.
Activating
Turn the key in the starter switch to
position1 o r r e m o v e i t f r o m t h e s t a r t e r
switch.

Press button
T
.
The indicator lamp on button
T

comes on.
Deactivating

Press button
T
.
The indicator lamp on button
T

goes off.
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 is losing refrigerant. The com-
pressor has turned itself off.
Have the air conditioning checked at
the nearest authorized Mercedes-Benz
Center.

167 Controls in detail
Audio system
Item
Page
1
CD mode selector
178
2
Manual tuning
(radio)
172
Fast forward/reverse
(cassette, CD)
176,
180
Speed dialing memory
(telephone*)
185
3
Radio mode selector
171
4
Display
Item
Page
5
Alpha-numeric keypadBand selection,
station buttons (radio)
171
CD selection (CD)
179
Telephone number entry,
retrieving speed dialing
memory (telephone*)
182
6
Scanning (radio, cas-
sette, CD)
173,
176,
180
7
Function button
172
8
Soft keys
168
Item
Page
9
Cassette eject
175
10
Cassette mode selector
174
11
Telephone* mode selec-
tor
182
12
Seek tuning (radio)
172
Track search (cassette,
CD)
175,
180
Speed dialing memory
(telephone*)
185
13
On /off
168
Volume
168

168 Controls in detailAudio systemButton and soft key operation
In these instructions, the alpha-numeric
keypad (right side of radio face) and the
function buttons (left side of the radio
face) are referred to as “buttons” and the
four keys under the display are referred to
as “soft keys”.Operation
Switching on/off
Switching on:
Turn the key to position1 or2 in the
starter switch.
or

Turn control knob
a
.Switching off:

Remove the key from the starter
switch.
or

Turn control knob
a
.
Adjusting the volume

Turn control knob
a
.
The volume will increase or decrease
according to the direction turned.Adjusting audio functions
In radio, cassette and CD mode, press
the AUD key to call up the bass, treble,
balance and fader functions.
Settings for bass and treble are stored sep-
arately for the AM (medium wave, long
wave, short wave) and FM (ultra-short
wave) frequency bands, cassette mode
and CD mode.
iDo not press directly on the radio dis-
play face.
iIf the radio is turned on without the key
in the ignition, it will automatically turn
off again after approx. 30 minutes.
iIf your vehicle was equipped with a
telephone* and voice control system*,
and both are connected to the car
radio, their volume can be adjusted
separately while the telephone* is
being used or voice control system* is
activated.

169 Controls in detail
Audio system
Bass
In radio, cassette and CD mode, press
the
AUD
key repeatedly until
BASS
ap-
pears on the display.

Press the
+ or
- key to increase or de-
crease the tone level accordingly.
or

Press both the
+ and
- keys simulta-
neously to reset the bass tones to the
center (flat) level.Treble

In radio, cassette and CD mode, press
the
AUD
key repeatedly until
TREBLE
ap-
pears on the display.

Press the
+ or
- key to increase or de-
crease the tone level accordingly.
or

Press both the
+ and
- keys simulta-
neously to reset the treble tones to
their center (flat) level.Fader

In radio, cassette and CD mode, press
the
AUD
key repeatedly until
FADER
ap-
pears on the display.

Press the
F or
R key to shift the sound
accordingly.
or

Press both the
F and
R keys simulta-
neously to reset the fader to its center
level.
iYour vehicle may or may not have the
fader function, depending on the vehi-
cle equipment and model.

170 Controls in detailAudio systemBalance
In radio, cassette and CD mode, press
the
AUD
key repeatedly until
BALANCE

appears on the display.

Press the
L or
R key to shift the sound
accordingly.
or

Press both the
L and
R keys simulta-
neously to reset the balance to its cen-
ter level.Returning audio functions to factory set-
tings

In radio, cassette and CD mode, press
and hold the
AUD
key longer than two
seconds.
RESET
will appear on the dis-
play.
All settings for bass, treble and balance
are returned to center and the volume
is set to a predefined level.Audio system sound selection (EXT)*

In radio, cassette and CD mode, press
the
AUD
key.
The sound settings menu appears on
the display.

Press the
EXT
key.

Press one of the function keys.
You can select from among the follow-
ing settings:

DRV
: The tone level is set to the
“Driver” position, sound is directed
toward the passengers.

173 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 ten AM and ten FM stations.


Storing stations
Tune in the desired station.

Press and hold the desired station
button1 to0 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 button1
to0.
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
inversed-color format.
The radio finds the ten stations with
the strongest signals. These sta-
tions are stored on the station
buttons1 to0 in the order of signal
strength.


Retrieving a station from memory
Press the desired station button1
to0.


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

174 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 buttons1 to7.
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
correspond-
ingly.

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.