MERCEDES-BENZ C55AMG 2006 W203 Owner's Manual

180 Controls in detail
Climate control
Windshield fogged on the outside
Switch the windshield wipers on
(
page 50).
Press buttonU (page 175).
The indicator lamp on the button
comes on. Air distribution and air vol-
ume are adjusted automatically.
If the automatic mode of the climate con-
trol is switched off:
Turn air distribution control4
toaorY (
page 175).
Air recirculation mode
Switch to air recirculation mode to prevent
unpleasant odors from entering the vehicle
from the outside (e.g. before driving
through a tunnel). This setting cuts off the
intake of outside air and recirculates the
air in the passenger compartment.Activating
Press button, (page 175).
The indicator lamp on the button
comes on.i
Keep this setting selected only until the
windshield is clear again.
Warning!G
Fogged windows impair visibility, endanger-
ing you and others. If the windows begin to
fog on the inside, switching off the air
recirculation mode immediately should clear
interior window fogging. If interior window
fogging persists, make sure the air
conditioning (
page 182) is activated, or
press buttonP or 0.
i
The air recirculation mode is activated
automatically at high outside tempera-
tures.
The indicator lamp on button, is
not lit when the air recirculation mode
is automatically switched on.
A quantity of outside air is added after
approximately 30 minutes.
Warning!G
Never operate the side windows and the
tilt/sliding sunroof if there is the possibility
of anyone being harmed by the closing pro-
cedure.

181 Controls in detail
Climate control
Deactivating
Press button, (page 175).
The indicator lamp on the button goes
out.
In the event that the closing procedure
causes potential danger, the closing of the
side windows can be immediately halted by
pressing or pulling the respective window
switch. The closing of the tilt/sliding
sunroof can be immediately halted by
moving the tilt/sliding sunroof switch in the
overhead control panel in any direction.
The closing of the side windows and
tilt/sliding sunroof can be reversed by again
pressing and holding the, button.
i
Press and hold button, for approx.
2 seconds. The side windows and
tilt/sliding sunroof will close. You can
release button, once the closing
procedure has begun. The windows
and tilt/sliding sunroof continue clos-
ing until they are fully closed.
i
The air recirculation mode is deactivat-
ed automatically:

after 5 minutes if the outside
temperature is below
approximately 41°F (5°C)

after 5 minutes if the air condition-
ing is turned off

after 30 minutes if the outside
temperature is above
approximately 41°F (5°C)
i
Press and hold button, for approx.
2 seconds. The side windows and or
tilt/sliding sunroof will return to their
previous position. You can release
button, once the opening proce-
dure has begun. The windows and
tilt/sliding sunroof continue opening
until they have reached their previous
position.
A window or tilt/sliding sunroof will
only return to its previous position if it
has not been moved to another posi-
tion using the respective window
switch or tilt/sliding sunroof switch af-
ter it was closed with button,. A
window or tilt/sliding sunroof that was
moved will remain in its current posi-
tion if button, is used to re-open
the remaining windows or tilt/sliding
sunroof.

182 Controls in detail
Climate control
Air conditioning
The cooling function, only operational
when the engine is running, cools the vehi-
cle interior down to the selected tempera-
ture. The cooling function also
dehumidifies the air in the vehicle interior,
thus preventing the windows from fogging
up.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 button2 (page 175).
The indicator lamp on the button goes
out.
The cooling function switches off after
a short delay.Activating
Moist air can fog up the windows. You can
dehumidify the air with the air condition-
ing.
Press button2 (page 175).
The indicator lamp on the button
comes on.
The air conditioning uses the refrigerant
R134a. This refrigerant is free of CFCs
which are harmful to the ozone layer.
i
Condensation may drip out from under-
neath the vehicle. This is normal and
not an indication of a malfunction.
Warning!G
If you turn off the cooling function, the
vehicle will not be cooled when weather
conditions are warm. The windows can fog
up more quickly. Window fogging may
impair visibility and endanger you and
others.
!
If the air conditioning cannot be turned
on again, this indicates that the air
conditioning is losing refrigerant. The
compressor has turned itself off.
Have the air conditioning checked at
the nearest authorized Mercedes-Benz
Center.

183 Controls in detail
Climate control
Rear passenger compartment
adjustable air vents
The air conditioning for the rear passenger
compartment is controlled via the climate
control panel (
page 174).The air vents for the rear passenger
compartment are located in the rear
center console.
1Left center air vent
2Thumbwheel for air volume control for
center air vents
3Right center air ventAdjusting air distribution
Push the slide for the left center
vent1 or right center vent3 to the
left, right, up or down.
The air flow is directed in the corre-
sponding direction.
Adjusting air volume
Turn thumbwheel2 up or down.
The air volume is increased or
decreased.
i
The temperature at the center air vents
for the rear passenger
compartment1 and3 is the same as
at the dashboard center air vents.i
For draft-free ventilation, push
slides1 and3 upward.

184 Controls in detail
Automatic climate control* (Canada only)

185 Controls in detail
Automatic climate control* (Canada only)
Automatic climate control panel
Item
1Left side defroster vent, fixed
2Left side air vent, adjustable
3Thumbwheel for air volume control
for left side air vent
4Thumbwheel for air volume control
for left center air vent
5Left center air vent, adjustable
6Right center air vent, adjustable
7Thumbwheel for air volume control
for right center air vent
8Thumbwheel for air volume control
for right side air vent
9Right side air vent, adjustable
aRight side defroster vent, fixed
bAutomatic climate control panel
i
For draft-free ventilation, move the
sliders for the air vents2,5,6,
and9 to the middle position.
Item
1Left side air distribution control
2Front defroster
3Temperature control, left, raising
4Display
5Air volume control, raising
6Temperature control, right, raising
7Rear window defroster
8Right side air distribution control
9Charcoal filter
aAC cooling on/off
Residual heat/ventilation
bTemperature control, right, lowering
cAir volume control, lowering
dTemperature control, left, lowering
eAir recirculation
fAutomatic climate control on/off
(complete system)
gAir distribution and air volume
(automatic mode)

186 Controls in detail
Automatic climate control* (Canada only)
The automatic climate control is operation-
al whenever the engine is running. You can
operate the automatic climate control sys-
tem in either the automatic or manual
mode. The system cools or heats the inte-
rior depending on the selected interior
temperature and the current outside tem-
perature.Nearly all dust particles, pollutants and
odors are filtered out before outside air
enters the passenger compartment
through the air distribution system.
The air conditioning will not engage (no
cooling) if the modeA/C is deactivated
(
page 194).
Warning!G
When operating the automatic climate
control, the air that enters the passenger
compartment through the air vents can be
very hot or very cold (depending on the set
temperature). This may cause burns or frost-
bite on unprotected skin in the immediate
area of the air vents. Always keep sufficient
distance between unprotected parts of the
body and the air vents. If necessary, use the
air distribution control (
page 189) to
direct the air to air vents in the vehicle
interior that are not in the immediate area of
unprotected skin.
Warning!G
Follow the recommended settings for
heating and cooling given on the following
pages. Otherwise the windows could fog up,
impairing visibility and endangering you and
others.
i
Severe conditions (e.g. strong air
pollution) may require replacement of
the filter before its scheduled interval.
A clogged filter will reduce the air
volume to the interior.
If the vehicle interior is hot, ventilate
the interior before driving off, see
“Summer opening feature”
(
page 241). The automatic climate
control will then adjust the interior
temperature to the set value much fast-
er.
Keep the air intake grille in front of the
windshield free of snow and debris.
Do not obstruct air flow by placing
objects on the air flow-through exhaust
slots below the rear window.

187 Controls in detail
Automatic climate control* (Canada only)
Deactivating the automatic climate
control system
Deactivating
Press button´ (page 185).
The indicator lamp on the button
comes on.
Reactivating
Press button´ (page 185).
The indicator lamp on the button goes
out.Operating the automatic climate con-
trol system in automatic modeActivatingPress buttonU (page 185) while
the engine is running.
The indicator lamp on the button
comes on. The air volume and air distri-
bution are adjusted automatically.
1Temperature, left
2Blower speed
3Temperature, right
Use temperature controls3 and
dor6 and b (
page 185) to sepa-
rately adjust the air temperature on
each side of the passenger compart-
ment.
The temperature of the vehicle interior
is adjusted automatically.
Warning!G
When the automatic climate control is
switched off, the outside air supply and cir-
culation are also switched off. Only choose
this setting for a short time. Otherwise the
windows could fog up, impairing visibility
and endangering you and others.
i
When operating the automatic climate
control system in automatic mode, you
will only rarely need to adjust the
temperature, air volume and air
distribution.
In automatic mode, cooling with dehu-
midify is switched on. This function can
be switched off if necessary.
i
The automatic climate control system
can be switched on or off separately for
the left and right sides of the passenger
compartment, as required.

188 Controls in detail
Automatic climate control* (Canada only)
Deactivating
Press buttonU (page 185) again.
The indicator lamp on the button goes
out. The automatic operation of air vol-
ume and air distribution switches off.
Setting the temperature
Use temperature controls3 andd for
the left side or6 andb for the right side
(
page 185) 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 22°C (72°F).
The automatic climate control will adjust
to the set temperature as fast as possible.Increasing
Press temperature button3
and/or6 (
page 185) until the de-
sired temperature appears in the con-
trol panel display4 (
page 185).
The automatic climate control system
will correspondingly adjust the interior
air temperature.Decreasing
Press temperature buttonb
and/ord (
page 185) until the de-
sired temperature appears in the con-
trol panel display4 (
page 185).
The automatic climate control system
will correspondingly adjust the interior
air temperature.
i
If you increase the temperature for one
side of the vehicle to the highest ad-
justable value then you will see the
message
HI in the display. This also in-
creases the temperature for the other
side of the vehicle at the same time.
i
If you decrease the temperature for
one side of the vehicle to the lowest ad-
justable value then you will see the
message
LO in the display. This also de-
creases the temperature for the other
side of the vehicle at the same time.

189 Controls in detail
Automatic climate control* (Canada only)
Adjusting air distribution
Use air distribution controls1 and8
(
page 185) to separately adjust the air
distribution on each side of the passenger
compartment. The following symbols are
found on the controls:
Turn air distribution control1 or8
(
page 185) to the desired symbol.
The indicator lamp on the buttonU
(
page 185) goes out.
The automatic air distribution is
switched off. The air distribution is
controlled according to the selected
control setting.Opening center and side air vents
Turn thumbwheels 3, 4, 7 and 8
(
page 184) upward.
The center air vents 5 and 6 and side
air vents 2 and 9 (
page 185) are
open.
Closing center and side air vents
Turn thumbwheels 3, 4, 7 and 8
(
page 184) downward.
The center air vents 5 and 6 and side
air vents 2 and 9 (
page 184) are
closed.
SymbolFunction
aDirects air through the center,
side and rear passenger
compartment air vents
ZDirects air to the windshield
and the side defroster vents
bDirects air into the entire
vehicle interior
YDirects air to the footwells
i
You can also turn the air distribution
control to a position between two sym-
bols.