2005 MERCEDES-BENZ CLK500 CABRIOLET window

182 Controls in detailClimate control (CLK 320)The climate control is operational when-
ever the engine is running. You can oper-
ate the climate control system in either the
automatic or manual mode. The system
cools or heats the interior depending on
the selected interior temperature and the
current 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 the modeAC
OFF
is activated or
mode AC is deactivated (page 187).
Warning!
G
When operating the 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 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 footwell air vents. If necessary,
change the air flow using the air distribution
controls to direct the air away from the foot-
well air vents (
page 184).
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.

183 Controls in detail
Climate control (CLK 320)
Deactivating the climate control system
Deactivating
Set air volume control1 (
page 181)
to position0.
Reactivating

Set air volume control1 (
page 181)
to any speed.
Setting the temperature
Use temperature controls2 and3
(page 181) 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).
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 243).
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.
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 climate control
system in automatic mode, you will
only rarely need to adjust the tempera-
ture, air volume and air distribution.

185 Controls in detail
Climate control (CLK 320)
Windshield fogged on the outside
Switch the windshield wipers on
(page 52).

Switch to manual mode.

Turn the air distribution control4
toa orY (
page 181).
Defrosting
Activating
Press buttonP or0
(page 181).
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 181).
The indicator lamp on the button goes
out. Defrosting is turned off.
iThese settings should only be selected
for a short time.

186 Controls in detailClimate control (CLK 320)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 181).
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 will close.Warning!
G
Never operate the side windows if there is
the possibility of anyone being harmed by
the closing procedure.
In the event that the closing procedure
causes potential danger, the closing of the
side windows can be immediately halted by
releasing the, button or by pressing or
pulling the respective window switch.
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 approx. 30 minutes, outside air is
added to the air inside the vehicle.
If you have turned off the air condi-
tioning (
page 187) or the outside
temperature is below 41°F (5°C), the
air recirculation mode will not switch
on automatically.

187 Controls in detail
Climate control (CLK 320)
Deactivating
Press button, (
page 181).
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.
Air conditioning
The air conditioning is operational while
the engine is running and cools the interior
air to the temperature set by the operator.
iIf you keep button, pressed the
side windows will return to their
previous position.
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
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.

188 Controls in detailClimate control (CLK 320)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 181).
The indicator lamp on the button
comes on.
The cooling function switches off after
a short delay.
Climate control panel design B

Press button2(
page 181).
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 181) again.
The indicator lamp on the button goes
out.
Climate control panel design B

Press button2(
page 181) again.
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.
!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.

191 Controls in detail
Automatic climate control (CLK 500/CLK 55 AMG)
Depending on production date, your vehi-
cle 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 air vent, adjustable
2
Thumbwheel for air volume control
for center air vents
3
Right side air vent, adjustable
4
Automatic climate control panel
5
Right center air vent, adjustable
6
Thumbwheel for air volume control
for right side center air vent
7
Thumbwheel for air volume control
for left side center air vent
8
Left center air vent, adjustableiFor draft-free ventilation, move the slid-
ers for the center air vents1, 3, 5,
8 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)

192 Controls in detailAutomatic climate control (CLK 500/CLK 55 AMG)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 AC is deactivated (page 198).
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 194).
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 243).
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.