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.
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.
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).
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.
249 Controls in detail
Power windows
Stopping windows
Press or pull respective switch again.
Opening and closing the windows with
the SmartKey
The power tilt/sliding sunroof*
(
p a g e 2 5 1 ) w i l l a l s o b e o p e n e d o r c l o s e d
when the power windows are operated
with the SmartKey.
Aim transmitter eye at the driver’s door
handle.
!If the upward movement of a door win-
dow is blocked during the closing pro-
cedure, the door window will stop and
open slightly.
Remove the obstruction, pull the
switch again past the resistance point
and release.
If the door window still does not close
when there is no obstruction, then pull
the switch and hold it. The door window
will then close without the obstruction
sensor function.Warning!
G
Driver’s door only:
If within five seconds you again pull the
switch past the resistance point and re-
lease, the automatic reversal will not
function.
Warning!
G
Never operate the windows or tilt/sliding
sunroof* if there is the possibility of anyone
being harmed by the opening or closing pro-
cedure.
In the event that the procedure causes
potential danger, the procedure can be
immediately halted by releasing the button
on the SmartKey. To reverse direction of
movement, press Œ for opening or ‹
for closing.
250 Controls in detailPower windowsOpening (Summer opening feature)
Press and hold button Œ after
unlocking the vehicle.
The windows and tilt/sliding sunroof*
begin to open after approximately one
second.
Release the Œ button to stop
procedure.
Closing (Convenience feature)
Press and hold button ‹ after
locking the vehicle.
The windows and tilt/sliding sunroof*
begin to close after approximately one
second.
Release the ‹ button to stop
procedure.
Make sure all side windows and the
tilt/sliding sunroof* are properly closed
before leaving the vehicle.Closing the side windows and power
tilt/sliding sunroof* with KEYLESS-GO
Press and hold lock button at door
(page 58) until the side windows and
the tilt/sliding sunroof* are closed.
Synchronizing power windows
The power windows must be resynchro-
nized each time
after the battery has been
disconnected.
if the power windows cannot be fully
opened (Express-open) or closed
(Express-close).
Switch ignition on (
page 36).
Pull the power window switches until
the side windows are closed.
Hold the switches for approximately
one second.
The power windows are synchronized.
Warning!
G
When closing the windows and the tilt/slid-
ing sunroof*, make sure there is no danger
of anyone being harmed by the closing pro-
cedure.
The windows will not automatically re-open
if blocked during convenience closing.
If potential danger exists, proceed as fol-
lows:
Release the lock button.
Pull on the door handle and hold firmly.
The side windows and the tilt/sliding
sunroof* will open for about two sec-
onds if the door handle is held but the
door not opened.
251 Controls in detail
Power tilt/sliding sunroof*
Power tilt/sliding sunroof*
Opening and closing the power tilt/sliding sunroof
The tilt/sliding sunroof can be opened and
closed electrically. The switch for the
tilt/sliding sunroof is on the overhead
control panel.Sunroof switch1Push up to raise roof at rear
2Pull down to lower roof at rear
3Push forward to slide roof closed
4Push back to slide roof openWith the roof closed or tilted open, a
screen can be slid into the roof opening to
guard against sun rays. When sliding the
roof open, the screen will also retract.
Screen
Warning!
G
When closing the tilt/sliding sunroof, make
sure there is no danger of anyone being
harmed by the closing procedure.
The opening/closing procedure of the
tilt/sliding sunroof can be immediately
halted by releasing the switch or, if the
switch was moved past the resistance point
and released, by moving the switch in any
direction.
The tilt/sliding sunroof is made out of glass.
In the event of an accident, the glass may
shatter. This may result in an opening in the
roof.
In a vehicle rollover, occupants not wearing
their seat belts or not wearing them properly
may be thrown out of the opening. Such an
opening also presents a potential for injury
for occupants wearing their seat belts
properly as entire body parts or portions of
them may protrude from the passenger
compartment.
252 Controls in detailPower tilt/sliding sunroof*
Switch on ignition (
page 36).
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 or close the tilt/sliding
sunroof, move the sunroof switch past
the resistance point in the required
direction of arrow3 or4 and
release.
The tilt/sliding sunroof opens or closes
completely.
Stopping the power tilt/sliding sunroof
during Express-operation
Move the sunroof switch in any
direction.
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
unattended in the vehicle, or with access to
an unlocked vehicle. Unsupervised use of
vehicle equipment can cause an accident
and/or serious personal injury.!To avoid damaging the seals, do not
transport 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 401).
iYou can also open or close the tilt/slid-
ing sunroof 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)
iIf the movement of the tilt/sliding
sunroof is blocked during the closing
procedure, the tilt/sliding sunroof will
stop and re-open slightly.