climate control MERCEDES-BENZ CLK COUPE 2006 C209 User Guide

191 Controls in detail
Climate control (CLK 350)
Opening center and side air vents
Turn thumbwheels 2, 6and7
(page 186) upward.
The side air vents1 and3 and cen-
ter air vents5 and 8 are open.
Closing center and side air vents

Turn thumbwheels 2, 6and7
(page 186) downward.
The side air vents1 and3 and cen-
ter air vents5 and 8 are closed.
Adjusting air volume
Six blower speeds are available.
Press buttonU (
page 187).
The indicator lamp on the button goes
out. The automatic air volume control
is switched off. The air volume is con-
trolled according to the currently se-
lected control setting.

Use the air volume control1
(page 187) to adjust the air volume.
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 buttonPor0
(page 187).
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 off
Deactivating

Press buttonP or0
(page 187) again.
The indicator lamp on the button goes
out. Defrosting is turned off.
iKeep this setting selected only until the
windshield or the side windows are
clear again.
iThe cooling remains switched on.

192 Controls in detailClimate control (CLK 350)Windshield fogged on the outside
Switch the windshield wipers on
(page 54).

Press button U (
page 187).
The indicator lamp on the button
comes on. Air distribution and air vol-
ume are adjusted automatically.
If the automatic mode of the climate con-
trol is switched off:

Turn air distribution control4
toaorY(
page 187).
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 187).
The indicator lamp on the button
comes on.
iKeep this setting selected only until the
windshield is clear again.
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 194) is activated, or
press buttonP or0.
iThe air recirculation mode is activated
automatically at high outside tempera-
tures.
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
approximately 30 minutes.

193 Controls in detail
Climate control (CLK 350)
Deactivating
Press button, (
page 187).
The indicator lamp on the button goes
out.
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
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. 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.iIf you press and hold button,, the
side windows and tilt/sliding sunroof*
will close.
iThe air recirculation mode is deactivat-
ed automatically:

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


after 5 minutes if the air condition-
ing is turned off


after 30 minutes if the outside
temperature is above
approximately 41°F (5°C)
iIf you press and hold button,, the
side windows and tilt/sliding sunroof*
will return to their previous position.
A side window or tilt/sliding sunroof*
will only return to its previous position
if it has not been moved to another po-
sition using the respective side window
switch or tilt/sliding sunroof* switch
after it was closed with button,.
A side window or tilt/sliding sunroof*
that was moved will remain in its cur-
rent position if button, is used to
re-open the remaining side windows or
tilt/sliding sunroof*.

194 Controls in detailClimate control (CLK 350)Air conditioning
The cooling function, is 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 climate
control system. The air in the vehicle will
then no longer be cooled or dehumidified.

Press button2(
page 187).
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.

Press button2(
page 187) 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 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.
!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.

195 Controls in detail
Climate control (CLK 350)
Rear passenger compartment adjustable air vents
The air conditioning for the rear passenger
compartment is controlled via the climate
control panel (
page 187).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 to the left or right.
The air volume is increased or
decreased.
iThe temperature at the center air vents
for the rear passenger
compartment2 and3 (
page 195)
is the same as at the dashboard center
air vents.
iFor draft-free ventilation, push
slides2 and3 upward.

196 Controls in detailAutomatic climate control (CLK 500)

197 Controls in detail
Automatic climate control (CLK 500)
Canada only
USA only
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
Front defroster
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/offResidual heat/ventilation
(Canada only)
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)Item

198 Controls in detailAutomatic climate control (CLK 500)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 tem-
perature.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 206).
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 197) 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
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
“Summer opening feature”
(page 249). The automatic climate
control will then adjust the interior
temperature to the set value much
faster.
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.

199 Controls in detail
Automatic climate control (CLK 500)
Deactivating the automatic climate control system
Deactivating
Press button´ (
page 197).
The indicator lamp on the button´
comes on.
Reactivating

Press button´ (
page 197).
The indicator lamp on the button´
goes out.Operating the automatic climate con-
trol system in automatic modeActivating

Press buttonU (
page 197) while
the engine is running.
The indicator lamp on the button
comes on. The air volume and air distri-
bution are adjusted automatically.
1Temperature, left
2Blower speed
3Temperature, right

Use temperature controls3 and
dor6 and b (
page 197) to sepa-
rately adjust the air temperature on
each side of the passenger compart-
ment.
The temperature of the vehicle interior
is adjusted automatically.
Warning!
G
When the automatic climate control is
switched off, the outside air supply and cir-
culation are also switched off. Only choose
this setting for a short time. Otherwise the
windows could fog up, impairing visibility
and endangering you and others.
iWhen operating the climate control
system in automatic mode, you will
only rarely need to adjust the tempera-
ture, air volume and air distribution.
In automatic mode, the dehumidify
function is switched on when the sys-
tem is cooling. If necessary, this func-
tion can be switched off by pushing the
button2or9 (
page 197).
iYou can switch the automatic climate
control system on and off for each side
of the passenger compartment as de-
sired.

200 Controls in detailAutomatic climate control (CLK 500)Deactivating
Press buttonU (
page 197) again.
The indicator lamp on the button goes
out. The automatic operation of air vol-
ume and air distribution switches off.
Setting the temperature
Use temperature controls3 andd for
the left side or6 andb for the right side
(page 197) 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).
The automatic climate control will adjust
to the set temperature as fast as possible.Increasing

Press and hold temperature button3
and/or6 (
page 197) until the de-
sired temperature appears in the dis-
play of the control panel4
(
page 197).
The automatic climate control system
will correspondingly adjust the interior
air temperature.Decreasing

Press and hold temperature buttonb
and/ord (
page 197) until the de-
sired temperature appears in the dis-
play of the control panel4
(
page 197).
The automatic climate control system
will correspondingly adjust the interior
air temperature.
iIf you increase the temperature for one
side of the vehicle to the highest ad-
justable value then you will see the
message
HI
in the display. This also in-
creases the temperature for the other
side of the vehicle.
iIf you decrease the temperature for
one side of the vehicle to the lowest ad-
justable value then you will see the
message
LO in the display. This also de-
creases the temperature for the other
side of the vehicle.