Page 211 of 521
210 Controls in detailDual-zone automatic climate control (USA only)Air recirculation mode
Switch to air recirculation mode to prevent
unpleasant odors from entering the vehicle
from the outside (e.g. before a driving
through a tunnel). This setting cuts off the
intake of outside air and recirculates the
air in the passenger compartment.Activating
Briefly press button,
(page 204).
The indicator lamp on the button
comes on.
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 212) is activated, or
press button
0
.
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.
If you have turned off the air condition-
ing (
page 212) or the outside
temperature is below 41°F (5°C), the
air recirculation mode will not switch
on automatically.
Warning!
G
Never operate the windows and tilt/sliding
sunroof* or tilt/sliding panel* if there is the
possibility of anyone being harmed by the
opening or closing procedure.
In case the procedure causes potential dan-
ger:
Vehicles with or without tilt/sliding sunroof:
The closing of the side windows can be im-
mediately halted by pressing or pulling the
respective window switch. The closing of the
tilt/sliding sunroof can be immediately halt-
ed by moving the switch for the tilt/sliding
sunroof in any direction.
The closing of the side windows and the
tilt/sliding sunroof can be reversed by again
pressing and holding the, button.
Vehicles with panorama roof: The closing of
the side windows and tilt/sliding panel can
be immediately halted by releasing the,
button.
Page 212 of 521
211 Controls in detail
Dual-zone automatic climate control (USA only)
Deactivating
Press button, (
page 204).
The indicator lamp on the button goes
out.
iPress and hold button, for approx-
imately 2 seconds. The side windows
and tilt/sliding sunroof* will close. You
can release button, once the clos-
ing procedure has begun. The windows
and tilt/sliding sunroof* continue clos-
ing until they are fully closed.
Vehicles with panorama roof:
Press and hold button, until the
side windows and the tilt/sliding panel
are closed or have reached the desired
position.
iThe air recirculation mode is
deactivated automatically:
after 5 minutes if the outside tem-
perature is below approximately
41°F (5°C)
after 5 minutes if the air condition-
ing is turned off
after 30 minutes if the outside tem-
perature is above approximately
41°F (5°C)
iPress and hold button, for
approximately 2 seconds. The side
windows and tilt/sliding sunroof* or
tilt/sliding panel* will return to their
previous position.You can release
button, once the opening proce-
dure has begun. The windows and
tilt/sliding sunroof* or tilt/sliding pan-
el* continue opening until they have
reached their previous position.
A window or tilt/sliding sunroof* (or
tilt/sliding panel*) will only return to its
previous position if it has not been
moved to another position using the re-
spective window switch or tilt/sliding
sunroof* (or tilt/sliding panel*) switch
after it was closed with button,.
A window or tilt/sliding sunroof* (or
tilt/sliding panel*) that has been
moved will remain in its current posi-
tion if button, is used to reopen
the remaining windows or tilt/sliding
sunroof* (or tilt/sliding panel*).
Page 213 of 521
212 Controls in detailDual-zone automatic climate control (USA only)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 climate
control system. The air in the vehicle will
then no longer be cooled or dehumidified.
Press button2 (
page 204).
The indicator lamp on the button goes
out.
Activating
Moist air can fog up the windows. You can
dehumidify the air with the air condition-
ing.
Press button2 (
page 204) 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 con-
ditioning is losing refrigerant. The com-
pressor has turned itself off.
Have the air conditioning checked at
the nearest authorized Mercedes-Benz
Center.
Page 214 of 521
213 Controls in detail
Dual-zone automatic climate control (USA only)
Rear passenger compartment adjustable air vents
The air conditioning for the rear passenger
compartment is controlled via the climate
control panel (
page 204).The air vents for the rear passenger
compartment are located in the rear
center console.
1Left center air vent
2Right center air vent
3Thumbwheel for air volume control for
right rear center air vent
4Thumbwheel for air volume control for
left rear center air ventAdjusting air distribution
Push the slide for the left center
vent1 or right center vent2 to the
left, right, up or down.
The air flow is directed in the corre-
sponding direction.
Adjusting air volume
Turn thumbwheel3 or4 up or down.
The air volume is increased or
decreased.
iThe temperature at the center air vents
for the rear passenger
compartment1 and2 is the same as
at the dashboard center air vents.
iFor draft-free ventilation, push
slides1 and2 upward.
Page 216 of 521
215 Controls in detail
4-zone automatic climate control*
1
Thumbwheel for air volume control
for left center air vent
2
Left center air vent, adjustable
3
Cockpit air vent, fixed
4
Right center air vent, adjustable
5
Thumbwheel for air volume control
for right center air vent
6
Right side defroster vent, fixed
7
Right side air vent, adjustable
8
Thumbwheel for air volume control
for right side air vent
9
Climate control panel
a
Thumbwheel for air volume control
for left side air vent
b
Left side air vent, adjustable
c
Left side defroster vent, fixed
iFor draft-free ventilation, move the
sliders for the center air vents 2 and
4 (
page 214) to the middle posi-
tion.
1
Thumbwheel for air volume control
for side air vent
2
Side air vent, adjustable
Page 219 of 521
218 Controls in detail4-zone automatic climate control*
The climate control is a 4-zone intelligent
climate control system. Your vehicle interi-
or is divided into 4 zones.With the help of a sun sensor, the climate
control determines the relation of the sun
to the vehicle and automatically adjusts
the inside temperature for every individual
zone.
You can set the temperature for each of
the 4 zones separately.
The climate control is operational whenev-
er the engine is running. It cools the vehi-
cle’s interior according to the angle and
intensity of the sun’s rays, the outside tem-
perature and the selected temperature.
You can operate the climate control sys-
tem in either the automatic or manual
mode.
Warning!
G
When operating the 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 burn or frostbite to unpro-
tected skin in the immediate area of the air
vents. Always keep sufficient distance be-
tween unprotected parts of the body and the
air vents. If necessary, use the air distribu-
tion controls (
page 217) or (
page 216)
to direct the air to air vents in the vehicle in-
terior that are not in the immediate area of
unprotected skin.
Page 220 of 521
219 Controls in detail
4-zone automatic climate control*
Nearly all dust particles, pollutants and
odors are filtered out before outside air en-
ters the passenger compartment through
the air distribution system.
The air conditioning will not engage (no
cooling) if the A/Cmode (
page 227) is
deactivated.Deactivating the climate control
system
Deactivating
Press button´ (
page 216) or
(
page 217) until the display4
(page 216) or (
page 217) is
cleared.
Warning!
G
Follow the recommended settings for heat-
ing and cooling given on the following pag-
es. Otherwise the windows could fog up,
impairing visibility and endangering you and
others.
iSevere conditions (e.g. strong air pollu-
tion) may require replacement of the fil-
ter 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 234). The 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 ob-
jects on the air flow-through exhaust
slots below the rear window.
iWhen the climate control system is de-
activated, the outside air supply and
circulation are also deactivated. Only
choose this setting for a short time.
Otherwise the windows could fog up.
Page 221 of 521
220 Controls in detail4-zone automatic climate control*Reactivating
Make sure the ignition is switched on.
Press button´ (
page 216) or
(
page 217) again.
The previous settings are once again in
effect.Operating the climate control system
in automatic modeActivating
Switch on the ignition (
page 36).
Press one buttonU (
page 216) or
(
page 217).
The indicator lamp on the button
comes on.
AUTO
appears in the
display4 (
page 216) or
(
page 217). The air volume and air
distribution are adjusted automatically.
Use temperature controls1 and6
(page 216) or (
page 217) to sepa-
rately adjust the air temperature on
each side of the passenger compart-
ment.
The temperature of the vehicle interior
is adjusted automatically.
iTo switch the system on, you can also
press another button, with the excep-
tion of 1, F and T
(page 216) or (
page 217).
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, cooling with dehu-
midify is switched on. This function can
be switched off if necessary.iThe automatic climate control system
can also be switched on or off
separately for the left and right sides of
the passenger compartment, as
required.
