climate control MERCEDES-BENZ C CLASS COUPE 2005 User Guide

178 Controls in detailClimate control
Deactivating
Press button, (
page 173).
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)
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 panorama roof
with power tilt/sliding panel* can be imme-
diately 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.
iThe air recirculation mode is activated
automatically at high outside tempera-
tures.
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 condi-
tioning (
page 179) or the outside
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.


179
Controls in detail
Climate control
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.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 climate
control system. The air in the vehicle will
then no longer be cooled or dehumidified.
Climate control panel design A

Press button
± (
page 173).
The indicator lamp on the button
comes on.
The cooling function switches off after
a short delay.
Climate control panel design B

Press button 2 (
page 173).
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.
Climate control panel design A

Press button
± (
page 173).
The indicator lamp on the button goes
out.
Climate control panel design B

Press button 2 (
page 173).
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.
iCondensation 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 vehi-
cle will not be cooled when weather condi-
tions are warm. The windows can fog up
more quickly. As a result, you can no longer
observe traffic situations around you and
could cause an accident.

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.
1 Left center air vent
2 Thumbwheel for air volume control for
center air vents
3 Right 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
compartment 1 and 3 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
vent
1 or right center vent 3 to the
left, right, up or down.
The air flow is directed in the corre-
sponding direction. Adjusting air volume

Turn thumbwheel
2 up or down.
The air volume is increased or
decreased.
iFor draft-free ventilation, push
slides 1 and 3 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 vents 2,5 ,6 ,
and 9 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
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.