2008 MERCEDES-BENZ GL320 climate control

240 Controls in detail
3-zone automatic climate control*
Deactivating
It is possible to deactivate the air condi-
tioning (cooling) function of the automatic
climate control system. The air in the vehi-
cle will then no longer be cooled or dehu-
midified.
Press button9 (page 230).
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 button9 again.
The indicator lamp on the button
comes on.
The air conditioning uses the refrigerant
R-134a. This refrigerant is free of CFCs
which are harmful to the ozone layer.Using driver-side settings for all tem-
perature zones
You can use the settings of the driver’s
side, such as temperature, air volume and
air distribution, for all temperature zones.
These settings only need to be made once
and the automatic climate control system
will automatically regulate the settings for
all temperature zones quickly and comfort-
ably.Activating
Adjust the temperature, air volume and
air distribution (
page 230).
Press button; (page 230).
The indicator lamp on the button
comes on.
The driver-side settings are used for all
temperature zones.
Deactivating
Press button; (page 230) again.
The indicator lamp on the button goes
out.
!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.
iIf you manually set the temperature, air vol-
ume or air distribution for the passenger side or
the rear passenger compartment when the
MONO setting is active, the MONO setting will
be switched off.
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241 Controls in detail
3-zone automatic climate control*
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.Activating
Switch off the ignition (page 41).
Press button9 (page 230).
The indicator lamp on the button
comes on.
Deactivating
Press button9.
The indicator lamp on the button goes
out.
Rear automatic climate control
The control panel is located at the rear of
the front center console.
iHow long the system will provide heating
depends on

the coolant temperature

the battery voltage
Regardless of the temperature and air volume
set on the automatic climate control panel, an
interior temperature is aimed at by 72°F (22°C)
and the blower runs on low speed to protect the
vehicle battery.
iThe residual heat is automatically turned off:

when the ignition is switched on

after about 30 minutes

if the coolant temperature is too low

if the battery voltage drops
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242 Controls in detail
3-zone automatic climate control*
Activating rear automatic climate
control
Press buttonU.
The indicator lamp on the button
comes on. The temperature, air vol-
ume, and air distribution are adjusted
automatically.
Deactivating rear automatic climate
control
Press button´.
The indicator lamp on the button goes
out.
The cooling function switches off after
a short delay.Operating from the front
Deactivating
Press button> (page 230).
The indicator lamp on the button goes
out.
In displaye (
page 230), you will see
the> symbol followed by
MODE for
approximately 3 seconds.
Press button´ (page 230).
In displaye (
page 230), you will see
the> symbol followed by
OFF.
The rear automatic climate control is
switched off.
1Left rear center air vent, adjustable
2Right rear center air vent, adjustable
3Temperature control
4Air distribution and air volume
(automatic, manual)
5Air distribution (directs air through
the center air vents)
6Air distribution (directs air through
the footwells and side air vents)
7Rear automatic climate control
on/off
8Decreasing air volume
9Indicator lamps for air volume
settings
aIncreasing air volume
iThe stored values for the rear automatic
climate control are erased from memory after
the ignition has been switched off for more than
30 minutes. Once the front automatic climate
control is switched on again, the rear automatic
climate control operates in automatic mode at a
preset temperature of 72°F (22°C).
iThe automatic climate control must be
switched on (
page 233).
iSwitch off the rear automatic climate con-
trol for improved cooling or heating output in the
front passenger compartment.
You can also switch off the rear automatic
climate control from the front passenger com-
partment (
page 230).
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243 Controls in detail
3-zone automatic climate control*
Reactivating
Press button> (page 230).
The indicator lamp on the button
comes on.
In displaye (
page 230), you will see
the> symbol followed by
ON and
MODE. The MODE display is cleared and
the indicator lamp on button>
goes out after approximately
3 seconds.
The rear automatic climate control
switches on.Setting the temperature
Press button> (page 230).
The indicator lamp on the button
comes on.
In displaye (
page 230), you will see
the> symbol followed by
MODE.
Set the desired temperature for the
rear passenger compartment using
temperature control3 (
page 242).
After approximately 3 seconds after
the last adjustment, the display switch-
es back to its standard display and the
indicator lamp on button> goes
out.Adjusting air distribution
Use the air distribution controls5 or6
to adjust the air distribution for the rear
passenger compartment.
The symbols on the controls represent the
following functions:
Adjusting manually
Press the desired air distribution con-
trol.
The indicator lamp on buttonU
goes out.iYou can also press the>button once
more to switch back to the standard display.
SymbolFunction
ZDirects air to the center air
vents
YDirects air to the footwells and
the side air vents
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244 Controls in detail
3-zone automatic climate control*
Adjusting automatically
Press buttonU while the engine is
running.
The indicator lamp on the button
comes on. The air distribution is adjust-
ed automatically.
Setting the temperature
Use temperature control3 (
page 242)
to separately adjust the air temperature of
the rear passenger compartment.
You should raise or lower the temperature
setting in small increments, preferably
starting at 72°F (22°C). The automatic cli-
mate control will adjust to the set temper-
ature as fast as possible.Increasing the temperature
Turn temperature control3
(
page 242) slightly clockwise.
The rear automatic climate control will
correspondingly adjust the interior air
temperature for the rear passenger
compartment.
Decreasing the temperature
Turn temperature control3
(
page 242) slightly counterclock-
wise.
The rear automatic climate control will
correspondingly adjust the interior air
temperature for the rear passenger
compartment.Adjusting air volume
Adjusting manually
Five blower speeds are available.
Press button
to decrease or
buttonQ to increase air volume to
the desired level.
The indicator lamp on the buttonU
goes out. The selected blower speed is
shown by the indicator lamps for air
volume settings9 (
page 242).
Adjusting automatically
Press buttonU.
The indicator lamp on the button
comes on. The air volume is adjusted
automatically.
iThe rear automatic climate control will not
cool the air when the air conditioning is switched
off (
page 240).
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245 Controls in detail
3-zone automatic climate control*
Air vents in the roof liner over the
second-row seats*
1Thumbwheel for air volume control
2Air vent, adjustable
Adjusting air volume
Turn thumbwheel1 d o w n t o d e c r e a s e
the air volume.
or
Turn thumbwheel1 up to increase the
air volume.Adjusting air distribution
Move air vent slider2 to the left, right,
up, or down to direct the air in the de-
sired direction.
Air vents in the roof liner over the
third-row seats*
1Thumbwheel for air volume control
2Air vent, adjustableAdjusting air volumeTurn thumbwheel1 d o w n t o d e c r e a s e
the air volume.
or
Turn thumbwheel1 up to increase the
air volume.
Adjusting air distribution
Move air vent slider2 to the left, right,
up, or down to direct the air in the de-
sired direction.
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246 Controls in detail
Power windows
The door windows and the hinged quarter
windows* are opened and closed electri-
cally. The switches for all door windows
and the hinged quarter windows* are
located on the driver’s door control panel.
The switches for the respective door win-
dows are located on the front passenger
door and the rear doors. The hinged quar-
ter windows* can be operated from the
driver’s seat only.
Switch on the ignition (page 42).
Warning!G
When closing the windows, make sure that
there is no danger of anyone being harmed
by the closing procedure.
Activate the override switch (
page 98)
when children are riding in the back seats of
the vehicle. The children could otherwise in-
jure themselves, e.g. by becoming trapped
in the window opening.
The closing of a door window can be imme-
diately halted by releasing the switch or, if
switch was pulled past the resistance point
and released, by either pressing or pulling
the respective switch.
If a door window encounters an obstruction
that blocks its path in a circumstance where
you pulled the switch past the resistance
point and released it to close the door win-
dow, the automatic reversal function will
stop the window and open it slightly.
If a door window encounters an obstruction
that blocks its path in a circumstance where
you are closing a door window by pulling and
holding the switch, or by pressing and hold-
ing button‹on the SmartKey, by press-
ing and holding the lock button (vehicles
with KEYLESS-GO*) on a door handle, the
automatic reversal function will not operate.
When leaving the vehicle, always remove the
SmartKey or SmartKey with KEYLESS-GO*
from the starter switch, take it with you, and
lock the vehicle. Do not leave childrenunattended in the vehicle, or with access to
an unlocked vehicle. A child’s unsupervised
access to a vehicle could result in an
accident and/or serious personal injury.
iYou can also open or close the windows
using the SmartKey, see “Summer opening fea-
ture” (
page 249) and see “Convenience clos-
ing feature” (
page 250).
Depending on the current position, the power
windows may also open or close when the air
recirculation button: on the control panel of
the climate control (
page 216) or automatic
climate control* (
page 230) is pressed and
held.
iAfter switching off the ignition (page 41)
or removing the SmartKey from the starter
switch, the windows can be operated

until you open the driver’s or front passenger
door

for at least 5 minutes if nor door was opened
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252 Controls in detail
Power tilt/sliding sunroof*
The tilt/sliding sunroof is opened and
closed electrically. The switch for the
tilt/sliding sunroof is located on the
overhead control panel.
Sunroof switch
1Push back to slide sunroof open
2Push forward to slide sunroof closed
3Push up to raise sunroof at rear
4Pull down to lower sunroof at rear
With the sunroof closed or tilted open, a
screen can be slid into the roof opening to
guard against sun rays. When sliding the
sunroof open, the screen will also retract.
Switch on the ignition (page 42).
Opening and closing
To open, close, raise, or lower the
tilt/sliding sunroof, move the sunroof
switch to the resistance point in the
required direction of arrows1to4
(
page 252).
Release the sunroof switch when the
tilt/sliding sunroof has reached the de-
sired position.
iDepending on the current position, the
tilt/sliding sunroof may also open or close when
the air recirculation button: on the control
panel of the climate control (
page 216) or
automatic climate control* (
page 230) is
pressed and held.
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