Page 217 of 491

216 Controls in detail4-zone automatic climate control*Deactivating
Press buttonP (
page 210)
or0 (
page 211).
The indicator lamp on the button goes
out. Defrosting is turned off.
Maximum cooling MAX COOL
If the left and right air distribution controls
as well as the airflow volume control are
set toU and there is a high need for
cooling, the display “MAX COOL” appears
in the front and rear display.
This provides the fastest possible cooling
of the vehicle interior (when windows and
tilt/sliding sunroof* are closed).
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 buttonO (
page 210) or
(
page 211).
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 buttonO pressed, the
side windows and the tilt / sliding sun-
roof* will close.
Page 218 of 491

217 Controls in detail
4-zone automatic climate control*
Deactivating
Press buttonO(
page 210) or
(
page 211).
The indicator lamp on the button goes
out.The air recirculation mode is deactivated
automatically:
after five minutes if the outside temper-
ature is below approximately 41°F
(5°C)
after five minutes if the air conditioning
is turned off
after 30 minutes if the outside temper-
ature 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.
Warning!
G
Never operate the side windows and
tilt/sliding sunroof* if there is the possibility
of anyone being harmed by the opening or
closing procedure.
In case the procedure causes potential dan-
ger:
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 theO button.
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)
If you have turned off the air condition-
ing (page 210) or (
page 211) or
the outside temperature is below 41°F
(5°C), the air recirculation mode will
not switch on automatically.
iIf you keep buttonO pressed, the
side windows and the tilt/sliding sun-
roof* will return to their previous posi-
tion.
Page 219 of 491

218 Controls in detail4-zone automatic climate control*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 climate
control system. The air in the vehicle will
then no longer be cooled or dehumidified.
Climate control panel design A
Press button± (
page 210).
The indicator lamp on the button
comes on.
AC
OFF
in the display comes on.
The cooling function is switched off.
Climate control panel design B
Press buttonœ (
page 211).
The indicator lamp on the button goes
out.
The cooling function is switched off.Activating
Moist air can fog up the windows. You can
dehumidify the air with the air condition-
ing.
Climate control panel design A
Press button± (
page 210) again.
The indicator lamp on the button goes
out.
AC
OFF
in the display goes out.
Climate control panel design B
Press buttonœ (
page 211) 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.
Page 220 of 491

219 Controls in detail
4-zone automatic climate control*
Residual heat and ventilation (available
on 4-zone 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
Turn the SmartKey in the starter switch
to position0 or1, or remove it from
the starter switch.
Press buttonT(
page 210).
REST in the display comes on.
Deactivating
Press buttonT(
page 210).
REST in the display goes out.
The residual heat is automatically turned
off
when the ignition is switched on
after about 30 minutes
if the battery voltage drops
Rear air conditioning
1Left rear center air vent, adjustable
2Right rear center air vent, adjustable
3Thumbwheel for air volume control for
right rear center air vent
4Temperature rocker switch, right
5Display
6Temperature rocker switch, left
7Thumbwheel for air volume control for
left rear center air vent
!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.
iHow long the system will provide heat-
ing depends on the coolant tempera-
ture and the temperature set by the
operator. The blower will run at speed
setting 1 regardless of the air distribu-
tion control setting.
Page 221 of 491
220 Controls in detail4-zone automatic climate control*Display1Temperature, left
2Temperature, right
Basic settings
We recommend setting the temperature
on both the left- and right-hand sides to
72°F (22°C). This ensures a pleasant tem-
perature in the rear of the vehicle.
The temperatures for the left- and
right-hand sides can be set using tempera-
ture rocker switches4 and6.Adjusting the rear settings with the
front control panel
Display
Press the™ button (
page 210)
or5 (
page 211).
The display switches over.
The temperature for the rear left- and
right-hand sides of the vehicle can be set
with temperature rocker switches4
and6.
The temperature display disappears ap-
proximately five seconds after the last
SmartKey confirmation and switches back
to the normal display.
iThe normal display will appear when
the™ button or the button5 is
pressed again.
Page 222 of 491

221 Controls in detail
Power windows
Power windows
Opening and closing the windows
The side windows are opened and closed
electrically. The switches for all of the side
windows are on the driver’s door. The
switches for the respective windows are
on the front passenger door and the rear
doors.
1Rear window override switch
(
page 84)
2Right front window
3Right rear window
4Left rear window
5Left front window
Warning!
G
When closing the windows, make sure that
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 door windows are equipped with the ex-
press-close and automatic reversal func-
tion. If the 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 the 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,
by pressing and holding the lock button (ve-
hicles with KEYLESS-GO*) on the door han-
dle, or by pressing and holding the air
recirculation buttonO on the climate
control, the automatic reversal function will
not operate.
When leaving the vehicle, always remove the
SmartKey or the 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. Unsu-
pervised use of vehicle equipment can
cause an accident and/or serious personal
injury.
Page 223 of 491

222 Controls in detailPower windows
Switch on the ignition (
page 34).
Opening the windows
Press switch2 to 5 to the resistance
point.
The corresponding window will move
downwards until you release the
switch.
Closing the windows
Pull switch2 to 5 to the resistance
point.
The corresponding window will move
upwards until you release the switch.Fully opening the windows
(Express-open)
Press switch2 to 5 past the resis-
tance point and release.
The corresponding window opens com-
pletely.
Fully closing the windows
(Express-close)
Pull switch2 to 5 past the resis-
tance point and release.
The corresponding window closes com-
pletely.
iYou can also open or close the win-
dows using the SmartKey, see “Sum-
mer opening feature” (
page 223) and
“Convenience closing feature”
(
page 224).
You can close and reopen the windows
using the air recirculation buttonO
in the control panel of the climate con-
trol (page 198) or (
page 210).
iOperating the windows from the rear is
not possible if you activate the override
switch (
page 84).
iWith the SmartKey in starter switch po-
sition 0 or removed from the starter
switch, the power windows can be op-
erated:
until you open the driver’s or front
passenger’s door
for at least five minutes.
Warning
G
If you pull and hold the switch up when clos-
ing the window, and upward movement of
the window is blocked by some obstruction
including but not limited to arms, hands, fin-
gers, etc., the automatic reversal will not op-
erate.
Page 224 of 491

223 Controls in detail
Power windows
If the upward movement of the window is
blocked during the closing procedure, the
window will stop and open slightly.Stopping windows during Express-op-
eration
Press or pull the respective power win-
dow switch again.
Synchronizing power windows
The power windows must be synchronized
after the battery has been disconnect-
ed
if the power windows cannot be fully
opened (Express-open) or closed
(Express-close)
Synchronizing
Close all doors.
Switch on the ignition (
page 34).
Pull switch2 to 5 until the side win-
dows are completely closed.
Hold on to switches2 to 5 for ap-
proximately one second.
The power windows are synchronized.
Summer opening feature
If the weather is warm, you can ventilate
the vehicle before driving off by simulta-
neously:
opening the side windows
opening the tilt/sliding sunroof*
turning on the seat ventilation* for the
driver’s seat
Warning!
G
Driver’s door only:
If within five seconds switch is again pulled
past the resistance point and released, the
automatic reversal will not operate.!If the upward movement of the window
is blocked during the closing proce-
dure, the window will stop and open
slightly.
Remove the obstruction, pull the re-
spective power window switch again
past the resistance point and release.
If the window still does not close when
there is no obstruction, pull and hold
the respective power window switch.
The side window will then close without
the obstruction sensor function.
iThe seat ventilation* for the driver’s
seat is automatically set to the highest
level if activated via summer opening
feature.