2007 MERCEDES-BENZ ML320CDI Comand Manual

208 Controls in detailClimate control
1
Temperature control, left
2
Air distribution and air volume
(automatic, manual)
3
Front defroster
0USA only
PCanada only
4
Increasing air volume
5
Air distribution (directs air through
the windshield and side air vents)
6
Rear climate control* on/off
Air supply for rear passenger
compartment on/off
:USA only
7
Temperature control, right
8
AC cooling on/off
Residual heat/ventilation
9
Air distribution (directs air through
center and side air vents)
a
Air distribution (directs air through
the footwells and side air vents)
b
Air volume display
c
Decreasing air volume
d
Rear window defroster
1USA only
FCanada only
e
Air recirculation
f
Interior temperature sensor
g
Climate control on/off

209 Controls in detail
Climate control
The climate control is operational whenev-
er the engine is running. You can operate
the climate control system in either the
automatic or manual mode. The system
cools or heats the interior depending on
the selected interior temperature and the
current outside temperature.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/C mode is deactivated
(
page 216).
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 burns or frostbite to unpro-
tected skin in the immediate area of the air
vents.
Always keep sufficient distance between un-
protected parts of the body and the air
vents. If necessary, use the air distribution
controls (
page 208) to direct the air to air
vents in the vehicle interior that are not in
the immediate area of unprotected skin.
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 climate control 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.

210 Controls in detailClimate controlDeactivating the climate control system
Deactivating
Press button´ (
page 208).
The indicator lamp on the button
comes on.Reactivating

Press buttonU (
page 208).
Operating the climate control system
in automatic modeActivating

Press buttonU (
page 208) while
the engine is running.
The indicator lamp on the button
comes on. The air volume and air distri-
bution are adjusted automatically.

Use temperature controls1 and7
(page 208) to separately adjust the
air temperature on each side of the
passenger compartment.
The interior air temperature is adjusted
automatically.
Warning!
G
When the climate control system is
switched off, the outside air supply and cir-
culation are also switched off. Only choose
this settings for a short time. Otherwise the
windows could fog up, impairing visibility
and endangering you and others.
i
You can also press button´
(
page 208) on the climate control panel.
If you press button0 (
page 208) to
reactivate the climate control system, the
defrosting mode is activated.
i
When operating the climate control system
in automatic mode, you will only rarely need to
adjust the temperature, air volume and air distri-
bution.
In automatic mode, cooling with dehumidify is
switched on. This function can be switched off if
necessary (
page 216).
i
The settings for the passenger side are also
used for the rear passenger compartment.

211 Controls in detail
Climate control
Deactivating
Press button
orQ
(page 208).
The indicator lamp on buttonU
goes out. The automatic operation of
air volume switches off. The selected
blower speed is shown in the air
volume displayb (
page 208).
or

Press air distribution button5,9,
ora (
page 208).
The indicator lamp on buttonU
goes out. The automatic operation of
air distribution switches off.
Setting the temperature
Use temperature controls1 and7
(page 208) 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 climate control will adjust to the set
temperature as fast as possible.Increasing

Turn temperature control1
and/or7 (
page 208) slightly clock-
wise.
The climate control system will corre-
spondingly adjust the interior air tem-
perature.
Decreasing

Turn temperature control1
and/or7 (
page 208) slightly coun-
terclockwise.
The climate control system will corre-
spondingly adjust the interior air tem-
perature.

212 Controls in detailClimate controlAdjusting air distribution
Press air distribution button5,9, ora
(page 208) to adjust the air distribution.
The following symbols are found on the
controls:

Press the desired air distribution
button5,9, ora (
page 208).
The indicator lamp on buttonU
goes out.
Adjusting air volume
Five blower speeds are available.
Press button
to decrease or
buttonQ to increase air volume
(page 208) to the desired level.
The indicator lamp on buttonU
(page 208) goes out. The automatic
operation of air volume switches off.
The selected blower speed is shown in
the air volume displayb
(page 208).
Adjusting air volume for the center and
side air vents
Opening the center air vents

Turn thumbwheels4 and7
(page 206) to the right.
The corresponding center air vents on
the left and right are open.Closing the center air vents

Turn thumbwheels4 and7
(page 206) to the left.
The corresponding center air vents on
the left and right are closed.
Opening the side air vents

Turn thumbwheels3 and8
(page 206) to the right.
The corresponding side air vents on the
left and right are open.
Closing the side air vents

Turn thumbwheels3 and8
(page 206) to the left.
The corresponding side air vents on the
left and right are closed.
Symbol
Function
a
Directs air through the center
and side air vents
Z
Directs air to the windshield
and side air vents
Y
Directs air to the footwells and
side air vents

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:.