2008 MERCEDES-BENZ CLK63AMG air condition

199 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 191).The air vents for the rear passenger
compartment are located in the rear
center console.
1Thumbwheel for air volume control for
center air vents
2Left center air vent
3Right center air ventAdjusting air distribution
Push the slide for the left center
vent2 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 thumbwheel1 t o t h e l e f t o r r i g h t .
The air volume is increased or
decreased.
iThe temperature at the center air vents2
and3 for the rear passenger compartment
(
page 199) is the same as at the dashboard
center air vents.iFor draft-free ventilation, move the slider for
the center air vents2 and3 upward.

202 Controls in detail
Automatic climate control
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
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 theA/C mode is deactivated
(
page 210).
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 controls (
page 201) to
direct the air to air vents in the vehicle inte-
rior that are not in the immediate area of un-
protected skin.
Warning!G
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 and the
windows could fog up, impairing visibility
and endangering you and others. Have a
clogged filter replaced as soon as possible
at an authorized Mercedes-Benz Center.
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.
iKeep the air intake grille in front of the wind-
shield free of snow and debris.
Do not obstruct air flow by placing objects on the
air flow-through exhaust slots below the rear
window.
iIf the vehicle interior is hot, ventilate the in-
terior before driving off, see “Summer opening
feature” (
page 253). The automatic climate
control will then adjust the interior temperature
to the set value much faster.

206 Controls in detail
Automatic climate control
Adjusting air volume
Use buttonU (
page 201) for auto-
matic mode or air volume controls

orQ (
page 201) to adjust air volume
manually.
Seven blower speeds are available.
Press button
to decrease
orQ (
page 201) to increase air
volume to the desired level.
The indicator lamp on the buttonU
goes out.
The automatic air distribution remains
switched on.
Front defroster
You can use this setting to defrost the
windshield, for example if it is iced up.
You can also defog the windshield and the
side windows.
Activating
Press buttonP or0
(
page 201).
The indicator lamp on the button
comes on.
The air conditioning switches
automatically to the following functions:

cooling on to dehumidify

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 201) again.
The indicator lamp on the button goes
out.
The previous settings are once again in
effect.
Windshield fogged on the outside
Switch the windshield wipers on
(
page 56).
If the automatic mode of the automatic cli-
mate control is switched off:
Turn air distribution control1 or8
toa orY (
page 201).
iKeep this setting selected only until the
windshield or the side windows are clear again.
iIf you have switched on the defrost function
using thePor0 button, you cannot
make any other settings.
iThe cooling remains switched on.
iKeep this setting selected only until the
windshield is clear again.

207 Controls in detail
Automatic climate control
Maximum cooling MAXCOOL
If the left and right air distribution controls
as well as the airflow volume control are
set toU (
page 201) 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 tilt/sliding sunroof* or soft top are
closed).
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 201).
The indicator lamp on the button
comes on.Deactivating
Press button, (page 201).
The indicator lamp on the button goes
out.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 210) is activated, or
press buttonP or 0.
iThe air recirculation mode is activated auto-
matically at high outside temperatures.
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 approxi-
mately 30 minutes.
iThe air recirculation mode is deactivated au-
tomatically:

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

after 5 minutes if the air conditioning is
turned off

after 30 minutes if the outside temperature
is above approximately 41°F (5 °C)

210 Controls in detail
Automatic 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 automatic
climate control system. The air in the
vehicle will then no longer be cooled or
dehumidified.
Press button2or9
(
page 201).
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
conditioning.
Press button2or9
(
page 201) 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.
iCondensation may drip out from underneath
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.

212 Controls in detail
Automatic climate control
Rear passenger compartment
adjustable air vents
The air conditioning for the rear passenger
compartment is controlled via the auto-
matic climate control panel (
page 201).The air vents for the rear passenger
compartment are located in the rear
center console.
1Thumbwheel for air volume control for
center air vents
2Left center air vent
3Right center air ventAdjusting air distribution
Push the slide for the left center
vent2 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 thumbwheel1 t o t he l e f t o r r i g h t .
The air volume is increased or de-
creased.
iThe temperature at the center air vents2
and3 for the rear passenger compartment
(
page 212) is the same as at the dashboard
center air vents.iFor draft-free ventilation, move the slider for
the center air vents2 and3 upward.

213 Controls in detail
Audio system
Audio system
Audio and telephone*, operation
These instructions are intended to help
you become familiar with your
Mercedes-Benz audio system. They con-
tain useful tips and a detailed description
of the user functions.Operating safetySound system*
Your vehicle is equipped with a sound sys-
tem. The subwoofer in the CLK cabriolet is
located between the rear seats.
Warning!G
In order to avoid distraction which could
lead to an accident, the driver should enter
system settings with the vehicle at a
standstill and operate the system only when
road and traffic conditions permit. Always
pay full attention to traffic conditions first
before operating system controls while
driving.
Bear in mind that at a speed of just 30 mph
(approximately 50 km/h), your car is
covering a distance of 44 feet
(approximately 14 m) every second.
Warning!G
Any alterations made to electronic
components can cause malfunctions.
The radio, amplifier, CD changer*, satellite
radio*, and telephone* are interconnected.
When one of the components is not opera-
tional or has not been removed/replaced
properly, the function of other components
may be impaired.
This condition might seriously impair the
operating safety of your vehicle.
We recommend that you have any service
work on electronic components carried out
at an authorized Mercedes-Benz Center.
!Make sure no objects fall into the openings
of the subwoofer between the rear seats.
If necessary, contact an authorized
Mercedes-Benz Center to remove any objects
which may have fallen into the openings.

257 Controls in detail
Power tilt/sliding sunroof* (Coupe)
Switch on the ignition (page 40).Opening and closing the power
tilt/sliding sunroof
To open, close, raise, or lower the
tilt/sliding sunroof, move the sunroof
switch to resistance point in the
required direction of arrows1 to4.
Release the sunroof switch when the
tilt/sliding sunroof has reached the
desired position.
Fully opening (Express-open) and
closing (Express-close) the power
tilt/sliding sunroof
To open, close, raise, or lower the
tilt/sliding sunroof, move the sunroof
switch past the resistance point in the
required direction of arrow1 to4
and release.
The tilt/sliding sunroof opens or closes
completely.
!To avoid damaging the seals, do not trans-
port any objects with sharp edges which can
stick out of the tilt/sliding sunroof.
Do not open the tilt/sliding sunroof if there is
snow or ice on the roof, as this could result in
malfunctions.
The tilt/sliding sunroof can be opened or closed
manually should an electrical malfunction occur
(
page 430).
!Please keep in mind that weather conditions
can sometimes change rapidly. Make sure to
close the tilt/sliding sunroof when leaving the
vehicle. If water enters the vehicle interior,
vehicle electronics could be damaged which is
not covered by the Mercedes-Benz Limited
Warranty.
iWhen the tilt/sliding sunroof is open, reso-
nance noises may result in addition to the usual
wind noises. They are caused by minimal pres-
sure changes in the passenger compartment. To
reduce or eliminate these noises, change the po-
sition of the tilt/sliding sunroof or open a side
window slightly.
iYou can also open or close the tilt/sliding
sunroof using the:

SmartKey (summer opening/convenience
feature) (
page 253)
Depending on current position, the tilt/sliding
sunroof may also open or close when:

the air recirculation button, in the con-
trol panel of the climate control
(
page 191) or automatic climate control
(
page 201) is pressed and held
or

the charcoal filter buttone in the control
panel of the automatic climate control
(
page 201) is pressed and held.