MERCEDES-BENZ CLK320 COUPE 2005 C209 Owner's Manual

Page 201 of 498

199 Controls in detail
Automatic climate control (CLK 500/CLK 55 AMG)
Windshield fogged on the outside
Switch the windshield wipers on
(page 52).

Switch to manual mode.

Turn air distribution control1 or8
toa orY (
page 195).
Adjusting air volume
Use buttonU for automatic mode or air
volume controls orQ
(page 195) to adjust air volume
manually.
Adjusting manually
Seven blower speeds are available.

Press air volume control orQ
(page 195) 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 195).
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.

Page 202 of 498

200 Controls in detailAutomatic climate control (CLK 500/CLK 55 AMG)Defrosting
Activating
Press buttonP or0
(page 195).
The indicator lamp on the button
comes on.
The air conditioning switches automatical-
ly 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 195).
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 195) 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* are closed).
iThese settings should only be selected
for a short time.

Page 203 of 498

201 Controls in detail
Automatic climate control (CLK 500/CLK 55 AMG)
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 195).
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 tilt/sliding sunroof*
will close.Warning
G
Never operate the side windows and the
tilt/sliding sunroof* if there is the possibility
of anyone being harmed by the closing
procedure.
In the event that the procedure causes po-
tential danger, the closing of the side win-
dows can be immediately halted by
releasing the, button or by pressing or
pulling the respective window switch. The
closing of the tilt/sliding sunroof* can be
immediately halted by releasing the,
button or by moving the tilt/sliding sunroof*
switch in the overhead control panel in any
direction.
iThe air recirculation mode is activated
automatically:
at high outside temperatures

if the concentration of carbon mon-
oxide and nitrogen oxide in the out-
side 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 approx. 30 minutes, outside air is
added to the air inside the vehicle.
If you have turned off the air
conditioning (
page 204) or the out-
side temperature is below 41°F (5°C),
the air recirculation mode will not
switch on automatically.

Page 204 of 498

202 Controls in detailAutomatic climate control (CLK 500/CLK 55 AMG)Deactivating
Press button, (
page 195).
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.
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.
iIf you keep button, pressed, the
side windows and tilt/sliding sunroof*
will return to their previous position.
iThe automatic air recirculation mode
does not function if theAC
OFF
(indica-
tor lamp on button° illuminated)
mode is activated orA/C (indicator
lamp on button2 not lit) mode is
deactivated, or if the outside tempera-
ture has fallen below 41°F (5°C).

Page 205 of 498

203 Controls in detail
Automatic climate control (CLK 500/CLK 55 AMG)
Activating
Press buttone (
page 195).
The indicator lamp on the button
comes on.Deactivating

Press buttone (
page 195).
The indicator lamp on the button goes
out.
iIf you keep buttone pressed, the
side windows and tilt/sliding sunroof*
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
tilt/sliding sunroof* if there is the possibility
of anyone being harmed by the closing
procedure.
In the event that the procedure causes po-
tential danger, the closing of the side win-
dows can be immediately halted by
releasing thee button or by pressing or
pulling the respective window switch. The
closing of the tilt/sliding sunroof* can be
immediately halted by releasing thee
button or by moving the tilt/sliding sunroof*
switch in the overhead control panel in any
direction.
iIf you keep buttone pressed, the
side windows an tilt/sliding sunroof*
will return to their previous position.

Page 206 of 498

204 Controls in detailAutomatic climate control (CLK 500/CLK 55 AMG)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 automatic
climate control system. The air in the
vehicle will then no longer be cooled or
dehumidified.
Automatic climate control panel
design A

Press button° (
page 195).
The indicator lamp on the button
comes on.
The cooling function switches off after
a short delay.
Automatic climate control panel
design B

Press button2(
page 195).
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 condi-
tioning.
Automatic climate control panel
design A

Press button°(
page 195) again.
The indicator lamp on the button goes
out.
The cooling function is switched on.
Automatic climate control panel
design B

Press button2(
page 195)
again.
The indicator lamp on the button
comes on.
The cooling function is switched 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
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.

Page 207 of 498

205 Controls in detail
Automatic climate control (CLK 500/CLK 55 AMG)
Residual heat and ventilation*
(available on Automatic climate control panel design A only)
With the engine switched off, it is possible
to continue to heat or ventilate the interior
for up to 30 minutes. This feature makes
use of the residual heat produced by the
engine.
Activating
Switch off ignition (
page 36).

Press button°(
page 195).
The indicator lamp on the button
comes on.Deactivating

Press button°(
page 195).
The indicator lamp on the button goes
out.
The residual heat is automatically turned
off:

when the ignition is switched on

after about 30 minutes

if the battery voltage drops
!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.
iHow long the system will provide
heating depends on
the coolant temperature

the temperature set by the operator
The blower will run at speed setting 1
regardless of the air distribution
control setting.

Page 208 of 498

206 Controls in detailAutomatic climate control (CLK 500/CLK 55 AMG)Rear passenger compartment adjustable air vents
The air conditioning for the rear passenger
compartment is controlled via the auto-
matic climate control panel (
page 195).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 vents
for the rear passenger
compartment2 and3 i s t h e s a m e a s
at the dashboard center air vents.
iFor draft-free ventilation, push
slides2 and3 upward.

Page 209 of 498

207 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 safety
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*, telephone* and voice control
system* are interconnected. When one of
the components is not operational 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
by an authorized Mercedes-Benz Center.

Page 210 of 498

208 Controls in detailAudio systemOperating and display elements

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