2007 MERCEDES-BENZ ML320CDI window

213 Controls in detail
Climate control
Front defroster
You can use this setting to defrost the
windshield, for example if it is iced up. You
can also use it to defog the windshield and
side windows.
Activating
Press button0(
page 208).
The indicator lamp on the button
comes on.
The climate control switches to the follow-
ing functions automatically:


maximum blower speed and heating
power


air flows onto the windshield and the
front side windows (side air vents must
be open)


the air conditioning compressor
switches on at outside temperatures
above approximately 41°F (5°C) for
air-drying
Deactivating

Press button0 (
page 208) once
more.
The indicator lamp on the button goes
out. Defrosting is turned off.
The previous settings are in effect
again. The air conditioning compressor
remains switched on.
Windshield fogged on the outside

Switch the windshield wipers on
(page 61).

Press button0(
page 208).
The indicator lamp on the button
comes on.
The climate control switches automatically
to the following functions:


maximum blower speed and heating
power


air flows onto the windshield and the
front side windows (side air vents must
be open)


the air conditioning compressor
switches on at outside temperatures
above approximately 41°F (5°C) for
air-drying
If the automatic air distribution is switched
off:

Press air distribution button9 ora
(page 208).
i
Keep this setting selected only until the
windshield or the side windows are clear again.
When the defrost setting has been selected, only
the rear window defroster can be switched on.
No other settings are possible.
i
To switch off, you can also press
button´ orU (
page 208).
i
Keep this setting selected only until the
windshield is clear again.

214 Controls in detailClimate controlAir 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 208).
The indicator lamp on the button
comes on.Deactivating

Press button:.
The indicator lamp on the button goes
out.
Warning!
G
Fogged windows impair visibility,
endangering 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 win-
dow fogging persists, make sure the air
conditioning (
page 208) is activated, or
press button0.
i
The air recirculation mode is activated auto-
matically at high outside temperatures.
The indicator lamp on button: is not lit when
the air recirculation mode is switched on auto-
matically.
A quantity outside air is added after
approximately 30 minutes.
If you have turned off the air conditioning
(
page 216) or the outside temperature is
below 41°F (5°C), the air recirculation mode will
not switch on automatically.
i
To cool the interior as fast as possible, the
climate control automatically switches to air
recirculation. The indicator lamp on button:
is not lit when the air recirculation mode has
been switched on automatically.
i
The air recirculation mode is deactivated
automatically


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


after 5 minutes if the air conditioning and
air-drying is turned off


after 30 minutes if the outside temperature
is above approximately 41°F (5°C)

215 Controls in detail
Climate control
Air recirculation mode with conve-
nience closing and opening featureConvenience closing

Press button: for approximately
2 seconds.
The windows and/or tilt/sliding sun-
roof* will close. You can release
button: once the closing proce-
dure has begun. The windows and
tilt/sliding sunroof* continue closing
until they are fully closed. The indicator
lamp on the button comes on. The air
recirculation mode is activated.Convenience opening

Press button: for approximately
2 seconds.
The windows and/or tilt/sliding sun-
roof* will return to their previous posi-
tions. You can release button:
once the opening procedure has be-
gun. The windows and tilt/sliding sun-
roof* continue opening until they have
reached their previous positions. The
indicator lamp on the button goes out.
The air recirculation mode is deactivat-
ed.
Warning!
G
Never operate the windows and tilt/sliding
sunroof* if there is the possibility of anyone
being harmed by the opening or closing pro-
cedure.
In case the procedure causes potential
danger:
Vehicles with or without tilt/sliding sun-
roof*: The closing of the windows can be im-
mediately halted by pressing or pulling the
respective window switch. The closing of the
tilt/sliding sunroof* can be immediately
halted by moving the switch for the tilt/slid-
ing sunroof* in any direction.
The closing of the windows and the
tilt/sliding sunroof* can be reversed by
again pressing and holding the :button.
i
A window or the tilt/sliding sunroof* 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*
switch after it was closed with button:.

216 Controls in detailClimate controlAir conditioning
The air conditioning is operational while
the engine is running and cools the interior
air to the temperature set by the operator.
In addition, the air conditioning dehumidi-
fies the interior air at outside temperatures
above 41°F (5° C) and helps prevent
window fogging.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 button9 (
page 208).
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 button9 (
page 208) 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.
Residual heat and ventilation
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.
i
Condensation may drip out from underneath
the vehicle. This is normal and not an indication
of a malfunction.Warning!
G
If you turn off the cooling function, the
interior air is not dried. 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
off.
Have the air conditioning checked at the nearest
authorized Mercedes-Benz Light Truck Center.
i
How long the system will provide heating
depends on


the coolant temperature


the battery voltage
Regardless of the temperature and air volume
set on the climate control panel, the interior tem-
perature is set to 72°F (22°C) and the blower
runs on low speed to protect the vehicle battery.

222 Controls in detail3-zone automatic climate control*
1
Temperature control, left
2
Air distribution and air volume
(automatic, manual)
3
Air distribution, driver’s side
4
Front defroster
0USA only
PCanada only
5
Increasing air volume
6
Rear window defroster
1USA only
FCanada only
7
Air distribution, passenger side
8
Rear automatic climate control
on/off
>USA only
™Canada only
9
Temperature control, right
a
Automatic climate control on/off
b
Air distribution, passenger side
c
Air distribution, passenger side
d
AC cooling on/off
Residual heat/ventilation
e
Display
f
Decreasing air volume
g
Air recirculation
h
Air distribution, driver’s side
j
Air distribution, driver’s side
k
Interior temperature sensor
l
Adopting driver’s side settings for all
zones

224 Controls in detail3-zone automatic climate control*
Deactivating the automatic climate control system
Deactivating
Press button´ (
page 222) until
the displaye (
page 222) is cleared.
The indicator lamp on the button
comes on.Reactivating

Press buttonU(
page 222).
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.i
Severe 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 fea-
ture” (page 239). The automatic climate con-
trol will then adjust the interior temperature to
the set value much faster.
Keep the air intake grille in front of the wind-
shield free of snow and debris.
Warning!
G
When the automatic climate control system
is switched off, the outside air supply and
circulation are also switched off. Only
choose this settings for a short time. Other-
wise the windows could fog up, impairing
visibility and endangering you and others.
i
You can also press button´
(
page 222) on the automatic climate control
panel.
If you press button0 (
page 222) to reacti-
vate the automatic climate control system, the
defrosting mode is activated.

227 Controls in detail
3-zone automatic climate control*
Adjusting air volume
Five blower speeds are available.
Press button
to decrease or
buttonQ to increase air volume
(page 222) to the desired level.
The indicator lamp on buttonU
goes out.
The AUTO
display disappears in the
displaye (
page 222) and the auto-
matic mode is switched off. The select-
ed blower speed appears in the
displaye (page 222).
Front defroster
You can use this setting to defrost the
windshield, such as when it is iced up. You
can also use it to defog the windshield and
side windows.
Activating
Press button0 (
page 222).
The indicator lamp on the button
comes on.The automatic climate control switches to
the following functions automatically:


maximum blower speed and heating
power


air flows onto the windshield and the
front side windows (side air vents must
be open)


the air conditioning compressor
switches on at outside temperatures
above approximately 41°F (5°C) for
air-drying
Deactivating

Press button0 (
page 222).
The indicator lamp on the button goes
out. Defrosting is turned off.
The previous settings are once again in
effect.
i
Keep this setting selected only until the
windshield or the side windows are clear again.
When the defrost setting has been selected, only
the rear window defroster can be switched on.
No other settings are possible.
i
To switch off, you can also press
button´ orU (
page 222).

228 Controls in detail3-zone automatic climate control*Windshield fogged on the outside
Switch the windshield wipers on
(page 61).

Press buttonU (
page 222).
AUTO
appears in the displaye
(
page 222). Air volume and air distri-
bution are controlled separately for
each zone.
If the automatic air distribution and air vol-
ume are switched off:

Press buttons8 andY
(page 222).
Maximum cooling MAX COOL
If the air distribution control as well as the
airflow volume control are set toU and
there is a high need for cooling, the
MAX COOL function is activated.
“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 (e.g. before driving
through a tunnel). This setting cuts off the
intake of outside air and recirculates the
air in the passenger compartment.
i
Keep this setting selected only until the
windshield is clear again.
Warning!
G
Fogged windows impair visibility,
endangering 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 win-
dow fogging persists, make sure the air
conditioning (
page 230) is activated, or
press button0.