MERCEDES-BENZ C COUPE 2005 CL203 Owner's Manual

180 Controls in detailClimate control
Rear passenger compartment adjustable air vents
The air conditioning for the rear passenger
compartment is controlled via the climate
control panel (
page 173).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 vent
!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.
iThe temperature at the center air vents
for the rear passenger
compartment1 and3 is the same as
at the dashboard center air vents.

181 Controls in detail
Climate control
Adjusting 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.
iFor draft-free ventilation, push
slides1 and3 upward.

182 Controls in detailAutomatic climate control*

183 Controls in detail
Automatic climate control*
Depending on production date, your
vehicle is equipped with either automatic
climate control panel design A or B.Automatic climate control panel design A
Automatic climate control panel design B
Item
1
Left side defroster vent, fixed
2
Left side air vent, adjustable
3
Thumbwheel for air volume control
for left side air vent
4
Thumbwheel for air volume control
for left center air vent
5
Left center air vent, adjustable
6
Right center air vent, adjustable
7
Thumbwheel for air volume control
for right center air vent
8
Thumbwheel for air volume control
for right side air vent
9
Right side air vent, adjustable
a
Right side defroster vent, fixed
b
Automatic climate control paneliFor draft-free ventilation, move the
sliders for the air vents2,5,6,
and9 to the middle position.
Item
1
Left side air distribution control
2
Defrosting
3
Temperature control, left, raising
4
Display
5
Air volume control, raising
6
Temperature control, right, raising
7
Rear window defroster
8
Right side air distribution control
9
Charcoal filter
a
AC cooling on/off (AC
OFF
or A/C)
Residual heat/ventilation
b
Temperature control, right, lowering
c
Air volume control, lowering
d
Temperature control, left, lowering
e
Air recirculation
f
Automatic climate control on/off
(complete system)
g
Air distribution and air volume
(automatic mode)

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
modeA/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 controls3 andd for
the left side or6 andb 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
2Blower speed
3Temperature, right
Increasing
Push temperature control3
and/or6 (
page 183).
The automatic climate control system
will correspondingly adjust the interior
air temperature.
Decreasing

Push temperature controlb
and/ord (
page 183).
The automatic climate control system
will correspondingly adjust the interior
air temperature.
Adjusting air distribution
Use the buttonU for automatic mode
or air distribution controls1 and8
(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 control1 or8
(page 183) to the desired symbol.
The indicator lamp on the buttonU
goes out.
The automatic air distribution is
switched off. The air distribution is
controlled according to the selected
control setting.
Adjusting automatically

Press buttonU (
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 control1 or8
toa orY (
page 183).
Adjusting air volume
Use buttonU 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 buttonU
goes out.
The automatic air distribution remains
switched on.Adjusting automatically

Press buttonU (
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 offDeactivating

Press buttonP 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 toU (
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.