Page 199 of 498

197 Controls in detail
Automatic climate control (CLK 500/CLK 55 AMG)
Deactivating the automatic climate control system
Deactivating
It is possible to deactivate the automatic
climate control system.
Press button´ (
page 195).
The indicator lamp on the button´
comes on.
The automatic climate control system
is deactivatedReactivating
Press button´ (
page 195).
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 195) 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.
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 249 of 498

247 Controls in detail
Power windows
Power windows
Opening and closing the windows
The side windows are opened and closed
electrically. The switches for all the side
windows are on the driver’s door. The
switches for the respective windows are
on the front passenger door and the rear
side trim panels.
1Left front window
2Right front window
3Right rear window
4Left rear window
5Rear window override switch
(
page 82)
Warning!
G
When closing the windows, make sure there
is no danger of anyone being harmed by the
closing procedure.
The closing of the door windows can be im-
mediately halted by releasing the switch or,
if switch was pulled past the resistance
point and released, by either pressing or
pulling the respective switch.
The closing of the rear side windows can be
immediately halted by releasing the switch.
The door windows are equipped with the ex-
press-close and automatic reversal func-
tion. If a door window encounters an
obstruction that blocks its path in a circum-
stance where you pulled the switch past the
resistance point and released it to close the
window, the automatic reversal function will
stop the window and open it slightly.
If a door window encounters an obstruction
that blocks its path in a circumstance where
you are closing the window by pulling and
holding the switch, by pressing and holding
button
‹
on the SmartKey, or by press-
ing and holding the lock button
(vehicles with KEYLESS-GO*) on the door
handle, the automatic reversal function will
not operate.
When leaving the vehicle, always remove the
SmartKey or SmartKey with KEYLESS-GO*
from the starter switch, take it with you, and
lock the vehicle. Do not leave children unat-
tended in the vehicle, or with access to an
unlocked vehicle. Unsupervised use of vehi-
cle equipment can cause an accident
and/or serious personal injury.
Page 250 of 498

248 Controls in detailPower windows
Switch on ignition (
page 36).Opening the windows
Press switch1 to4 to the resistance
point.
The corresponding window will move
downwards until you release the
switch.
Closing the windows
Pull on switch1 to4 to the
resistance point.
The corresponding window will move
upwards until you release the switch.Fully opening the door windows
(Express-open)
Press switch1 or2 past the
resistance point and release.
The corresponding window opens
completely.
Fully closing the door windows
(Express-close)
Pull switch1 or2 past the
resistance point and release.
The corresponding window closes
completely.
iYou can also open or close the win-
dows using the:
SmartKey (summer opening/con-
venience feature) (
page 249)
button, in the control panel of
the climate control (
page 185) or
automatic climate control
(
page 195).
buttone in the control panel of
the automatic climate control
(page 195).
Warning!
G
If you pull and hold the switch up when
closing the window, and upward movement
of the window is blocked by some obstruc-
tion including but not limited to arms, hands,
fingers, etc., the automatic reversal will not
operate.