climate control MERCEDES-BENZ C230 KOMPRESSOR 2003 W203 Owner's Manual

Contents
Automatic transmission* ................... 138
One-touch gearshifting................. 139
Gear ranges ................................. 140
Gear selector lever position ......... 141
Program mode selector switch..... 142
Accelerator position ..................... 143
Emergency operation
(Limp Home Mode) ...................... 143
Good visibility .................................... 144
Rear view mirror........................... 144
Headlamp cleaning system* ........ 146
Sun visors .................................... 146
Rear window sunshade* .............. 147
Climate control .................................. 148
Setting the temperature ............... 150
Adjusting air distribution and
volume ......................................... 151
Defrosting .................................... 151
Air recirculation mode.................. 152
Rear window defroster ................. 153
Deactivating the climate control
system ......................................... 153
Air conditioning ............................ 154
Ventilated storage compartment . 155
Rear passenger compartment
adjustable air vents ...................... 155Automatic climate control* ................ 156
Setting the temperature................ 158
Adjusting air distribution............... 159
Adjusting air volume ..................... 159
Maximum cooling MAXCOOL ........ 160
Defrosting ..................................... 160
Air recirculation mode .................. 160
Charcoal filter ............................... 161
Rear window defroster .................. 162
Air conditioning............................. 163
Residual heat and ventilation* ...... 163
Rear passenger compartment
adjustable air vents....................... 164
Audio system ...................................... 165
Audio and telephone, operation .... 165
Operating safety ........................... 165
Operating and display elements.... 166
Button and soft key operation....... 168
Operation ...................................... 168
Radio mode................................... 171
Cassette mode.............................. 174
CD changer* operating mode ....... 178
Telephone* operation ................... 182Power windows .................................. 187
Opening and closing the windows 187
Synchronizing power windows ...... 189
Sliding/pop-up roof*.......................... 190
Opening and closing the
sliding/pop-up roof....................... 190
Synchronizing the
sliding / pop-up roof ...................... 192
Driving systems .................................. 193
Cruise control ............................... 193
Loading .............................................. 196
Roof rack* .................................... 196
Ski sack* ...................................... 196
Split rear bench seat*................... 199
Loading instructions ..................... 202
Useful features ................................... 203
Interior storage spaces ................. 203
Ashtrays........................................ 207
Cigarette lighter ............................ 208
Telephone* ................................... 208
Tele Aid* ....................................... 209
Garage door opener ...................... 217

25 At a glance
Center console
Center console
Upper part
Item
Page
1
Seat heater*, driver’s side
97
2
Rear window sunshade
switch
147
3
ESP control switch
75
4
Hazard warning flasher
switch – switching on/off
104
5
Central locking switch
92
6
Rear seat head restraints
switch
36
7
Anti-theft alarm system in-
dicator lamp
79
Tow-away alarm switch
80
Item
Page
8
Seat heater*, passenger
side
97
9
Indicator lamp
7
67,
260
10
Audio system, or
165
COMAND* (see separate
operating instructions)
11
Climate control
148
Automatic climate control*
156
Rear window defroster
153,
162

83 Controls in detail
Locking and unlocking
Seats
Memory function*
Lighting
Instrument cluster
Control system
Manual transmission
Automatic transmission*
Good visibility
Climate control
Automatic climate control*
Audio system
Power windows
Sliding/pop-up roof*
Driving systems
Loading
Useful features

148 Controls in detailClimate control
Climate control

149 Controls in detail
Climate control
Climate control panel
The storage compartment between the
front seats can be ventilated (
page 155).
Information about “Rear passenger com-
partment adjustable air vents”
(
page 155).
Item
1
Air volume control for left center air
vent
2
Left center air vent, adjustable
3
Right center air vent, adjustable
4
Air volume control for right center
air vent
5
Air volume control for side air vent
6
Side air vent, adjustable
7
Side defroster vent, fixed
8
Climate control paneliFor draft-free ventilation, move the slid-
ers for the center air vents to the mid-
dle position.
Item
1
Air volume control
2
Left-side temperature control
3
Right-side temperature control
4
Air distribution control switch
5
Rear window defroster
6
AC cooling on/off (AC
OFF
)
7
Air distribution and air volume
(automatic)
8
Air recirculation
9
Defrosting

150 Controls in detailClimate controlThe climate control is operational whenev-
er the engine is running. You can operate
the climate control system in either the au-
tomatic or manual mode. The system cools
or heats the interior depending on the se-
lected interior temperature and the cur-
rent outside temperature.
Nearly all dust particles, pollutants and
odors are filtered out before outside air en-
ters the passenger compartment through
the air distribution system.
The air conditioning will not engage (no
cooling) if theAC
OFF
mode is selected
(
page 154).
Setting the temperature
Use the temperature controls2 and3
(page 149) to separately adjust the air
temperature on each side of the passenger
compartment. You should raise or lower
the temperature setting in small incre-
ments, preferably starting at 72°F (22°C).
Increasing

Turn the control slightly to the right.
The climate control system will corre-
spondingly adjust the interior air tem-
perature.
Decreasing

Turn the control slightly to the left.
The climate control system will corre-
spondingly adjust the interior air tem-
perature.
Warning!
G
Follow the recommended settings for heat-
ing and cooling given on the following pag-
es. Otherwise the windows could fog up,
impairing visibility and endangering you and
others.iIf the vehicle interior is hot, ventilate
the interior before driving off.
Keep the air intake grille in front of the
windshield free of snow and debris.
Do not obstruct air flow by placing ob-
jects on the air flow-through exhaust
slots below the rear window.

151 Controls in detail
Climate control
Adjusting air distribution and volume
Use the air distribution control4
(page 149) to adjust the air distribution.
The following symbols are found on the
controls:
Adjusting manually

Press the
U
button.
The indicator lamp on the button goes
out.

Select any of the six air volume speeds
using the air volume control1
(page 149) and the air distribution.Adjusting automatically

Press the
U
button.
The indicator lamp on the button
comes on. The air distribution and vol-
ume is adjusted automatically.
Windshield fogged on the outside

Switch the windshield wipers on.

Switch to manual mode.

Turn the air distribution control
to
a
or
Y
.
Defrosting
Activating
Press button
P
.
The indicator lamp on the button
comes on.
or

Switch off air recirculation, if selected.
Press button
O
.
The indicator lamp on the button goes
out.

Close center air vents.

Open left and right side air vents and
adjust side air vents upwards.
Symbol
Function
a
Directs air through the center,
side and rear passenger
compartment air vents
Z
Directs air to the windows
X
Directs air into the entire
vehicle interior
Y
Directs air to the footwells
iThese settings should only be selected
for a short time.

152 Controls in detailClimate controlDeactivating
Press button
P
.
The indicator lamp on the button goes
out. Defrosting is turned off.
Air recirculation mode
Switch to air recirculation mode to prevent
unpleasant odors from entering the vehicle
from the outside. This setting cuts off the
intake of outside air and recirculates the
air in the passenger compartment.Activating

Press button
O
.
The indicator lamp on the button
comes on.
Deactivating

Press button
O
.
The indicator lamp on the button goes
out.The air recirculation mode is deactivated
automatically:


after five minutes if the outside temper-
ature is below approximately 41°F
(5°C)


after five minutes if the air conditioning
is turned off


after 30 minutes if the outside temper-
ature is above approximately 41°F
(5°C)
At outside temperatures above 79°F
(26°C) the system will not automatically
switch back to outside air. A quantity of
outside air is added after approximately
30 minutes.
Warning!
G
When the outside temperature is
below 41°F (5°C), only switch to air
recirculation mode for short periods to
prevent window fogging.
iIf you keep button
O
pressed the
side windows and sliding/pop-up roof*
will be closed.
The air recirculation mode is activated
automatically at high outside tempera-
tures.
If you have turned off the air condition-
ing (
page 154) or the outside
temperature is below 41°F (5°C), the
air recirculation mode will not switch
on automatically.
iIf you keep button
O
pressed the
side windows and sliding/pop-up roof*
will be returned to their previous posi-
tion.

153 Controls in detail
Climate control
Rear window defroster
The rear window defroster uses a large
amount of power. To keep the battery
drain to a minimum, switch off the defrost-
er as soon as the rear window is clear. The
defroster is automatically deactivated af-
ter approximately 6 to 17 minutes of oper-
ation depending on the outside
temperature.
Activating
Press button
F
.
The indicator lamp on the button lights
up.
Deactivating

Press button
F
again.
The indicator lamp on the button goes
out.Deactivating the climate control
system
Deactivating
Set the air volume control
(page 149) to position 0.
Reactivating

Set the air volume control
(page 149) to any speed.
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.

154 Controls in detailClimate controlAir 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 climate
control system. The air in the vehicle will
then no longer be cooled or dehumidified.
Press buttonAC
OFF
(page 149).
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 149).
The indicator lamp on the
buttonAC
OFF
goes out.
The air conditioning uses the
refrigerant R134a. This refrigerant is free
of CFC’s which are harmful to the ozone
layer.
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.