2005 MERCEDES-BENZ C CLASS COUPE Owners Manual

184 Controls in detailAutomatic climate control*The automatic climate control is operation-
al whenever the engine is running. You can
operate the climate control system in ei-
ther the automatic or manual mode. The
system cools or heats the interior depend-
ing on the selected interior temperature
and the current outside temperature.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 modeAC
OFF
is activated or
mode A/C is deactivated (page 192).
iFeature availability is based on prelimi-
nary information at time of printing.
The automatic climate control may not
be available as optional equipment on
all models.
Warning
G
When operating the automatic climate
control, the air that enters the passenger
compartment through the air vents in the
footwell can be very hot or very cold
(depending on the set temperature). This
may cause burns or frostbite on unprotected
skin in the immediate area of the air vents.
Always keep sufficient distance between
unprotected parts of the body and the foot-
well air vents. If necessary change the air
flow using the air distribution controls to
direct the air away from the footwell air
vents (
page 186).
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.iSevere 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
“Opening (Summer opening feature)”
(page 245).
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.

185
Controls in detail
Automatic climate control*
Deactivating the automatic climate control system
Deactivating
It is possible to deactivate the automatic
climate control system.
Press button
´ (
page 183).
The indicator lamp on the button ´
comes on.
The automatic climate control system
is deactivated. Reactivating

Press button
´ (
page 183).
The indicator lamp on the button ´
goes out.
The automatic climate control system
is reactivated.
Setting the temperature
Use temperature controls 3 and d for
the left side or 6 and b for the right side
(page 183) 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).
iWhen the air conditioning is switched
off, the outside air supply and circula-
tion are also switched off. Only choose
this setting for a short time. Otherwise
the windows could fog up.
iWhen operating the automatic climate
control system in automatic mode, you
will only rarely need to adjust the
temperature, air volume and air
distribution.

186 Controls in detailAutomatic climate control*Display1Temperature, left
2 Blower speed
3 Temperature, right
Increasing
Push temperature control 3
and/or 6 (
page 183).
The automatic climate control system
will correspondingly adjust the interior
air temperature.
Decreasing

Push temperature control b
and/or d (
page 183).
The automatic climate control system
will correspondingly adjust the interior
air temperature.
Adjusting air distribution
Use the button U for automatic mode
or air distribution controls 1 and 8
(page 183) to separately adjust the air
distribution on each side of the passenger
compartment. The following symbols are
found on the controls: Adjusting manually

Turn air distribution control
1 or 8
(page 183) to the desired symbol.
The indicator lamp on the button U
goes out.
The automatic air distribution is
switched off. The air distribution is
controlled according to the selected
control setting.
Adjusting automatically

Press button U (
page 183).
The indicator lamp on the button
comes on.
The air volume is controlled automati-
cally for the entire vehicle, and the air
distribution is controlled automatically
for each separate half of the vehicle.
Symbol
Function
Z
Directs air to the windshield
and the side defroster vents
b
Directs air into the entire
vehicle interior
Y
Directs air to the footwells
a
Directs air through the center,
side and rear passenger
compartment air vents

187
Controls in detail
Automatic climate control*
Windshield fogged on the outside
Switch the windshield wipers on
(page 53).

Switch to manual mode.

Turn air distribution control
1 or 8
to a orY (
page 183).
Adjusting air volume
Use button U for automatic mode or air
volume controls
orQ
(page 183) to adjust air volume
manually.
Adjusting manually
Seven blower speeds are available.

Press air volume control
orQ
(page 183) until the requested
blower speed is attained.
The indicator lamp on the button U
goes out.
The automatic air distribution remains
switched on. Adjusting automatically

Press button
U (
page 183).
The indicator lamp on the button
comes on.
The air volume is controlled automati-
cally for the entire vehicle, and the air
distribution is controlled automatically
for each separate half of the vehicle.

188 Controls in detailAutomatic climate control*Defrosting
Activating
Press buttonP or0
(page 183).
The indicator lamp on the button
comes on.
The air conditioning switches
automatically to the following functions:


maximum blowing and heating
power


air flows onto the windshield and
the front side windows


the air recirculation mode is
switched off Deactivating

Press button
P or0
(page 183).
The indicator lamp on the button goes
out. Defrosting is turned off.
The previous settings are once again in
effect.
Maximum cooling MAXCOOL
If the left and right air distribution controls
as well as the airflow volume control are
set to U (
page 183) and there is a
high need for cooling, the display
“MAXCOOL” appears.
This provides the fastest possible cooling
of the vehicle interior (when side windows
and panorama roof with power tilt/sliding
panel* are closed).
iThese settings should only be selected
for a short time.

189
Controls in detail
Automatic climate control*
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
, (
page 183).
The indicator lamp on the button
comes on.
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.
Window fogging may impair visibility and
endanger you and others.
iIf you keep button , pressed, the
side windows and panorama roof with
power tilt/sliding panel* will close.Warning!
G
Never operate the side windows and the
panorama roof with power tilt/sliding pan-
el* if there is the possibility of anyone being
harmed by the closing procedure.
Vehicles without panorama roof with power
tilt/sliding panel*:
In the event that the procedure causes
potential danger, the opening and closing of
the side windows can be immediately halted
by pressing or pulling the respective window
switch.
Vehicles with panorama roof with power
tilt/sliding panel*:
In the event that the procedure causes po-
tential danger, the opening and closing of
the side windows can be immediately halted
by releasing the , button or
by pressing or pulling the respective window
switch. The opening and closing of the pan-
orama roof with power tilt/sliding panel*
can be immediately halted by releasing the
, button or by moving the panorama
roof with power tilt/sliding panel switch in
the overhead control panel in any direction.

190 Controls in detailAutomatic climate control*
Deactivating
Press button, (
page 183).
The indicator lamp on the button goes
out. The air recirculation mode is deactivated
automatically:


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


after five minutes if the air conditioning
is turned off


after 30 minutes if the outside
temperature 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.
iThe air recirculation mode is activated
automatically:

at high outside temperatures


if the concentration of carbon mon-
oxide and nitrogen oxide in the
outside air increases, for example
in a tunnel (charcoal filter must be
activated for the air recirculation
mode to be activated automatically)
The indicator lamp on the button ,
is not lit when the air recirculation
mode is automatically switched on.
After approximately 30 minutes, out-
side air is added to the air inside the
vehicle.
If you have turned off the air
conditioning (
page 192) or the out-
side temperature is below 41°F (5°C),
the air recirculation mode will not
switch on automatically.
iIf you keep button , pressed, the
side windows and panorama roof with
power tilt/sliding panel* will return to
their previous position.

191
Controls in detail
Automatic climate control*
Charcoal filter
An activated charcoal filter markedly
reduces bad odors and removes pollutants
from air entering the passenger compart-
ment. The charcoal filter can be activated
or deactivated.
The system switches automatically to the
air recirculation mode, if the

carbon monoxide (CO)
or


nitrogen oxide (NO
X)
concentration of the outside air increases
beyond a predetermined level. Activating

Press button
e (
page 183).
The indicator lamp on the button
comes on.
iThe automatic air recirculation mode
does not function if the AC
OFF
mode
is activated (indicator lamp on
button ° illuminated) or A/C mode
is deactivated (indicator lamp on
button 2 not lit), or if the
outside temperature has fallen
below 41°F (5°C).
iIf you keep button e pressed, the
side windows and panorama roof with
power tilt/sliding panel* will close.iThe activated charcoal filter should be
switched off when windows fog up on
the inside, or if the passenger compart-
ment needs to be quickly heated or
cooled down.Warning!
G
Never operate the side windows and the
panorama roof with power tilt/sliding pan-
el* if there is the possibility of anyone being
harmed by the closing procedure.
Vehicles without panorama roof with power
tilt/sliding panel*:
In the event that the procedure causes
potential danger, the opening and closing of
the side windows can be immediately halted
by pressing or pulling the respective window
switch.
Vehicles with panorama roof with power
tilt/sliding panel*:
In the event that the procedure causes po-
tential danger, the opening and closing of
the side windows can be immediately halted
by releasing the e button or by pressing
or pulling the respective window switch. The
opening and closing of the panorama roof
with power tilt/sliding panel* can be imme-
diately halted by releasing the e button
or by moving the panorama roof with power
tilt/sliding panel switch in the overhead
control panel in any direction.