2007 MERCEDES-BENZ GL450 climate controls

229 Controls in detail
Climate control
Operating from the front
Deactivating
Press button: on the front climate
control panel (
page 218).
The indicator lamp on the button
comes on.
Reactivating
Press button: on the front climate
control panel (
page 218).
The indicator lamp on the button goes
out. The rear climate control is adjust-
ed automatically.Adjusting air distribution
Use the air distribution controls4 or5
to adjust the air distribution for the rear
passenger compartment.
The following symbols are found on the
controls:
Adjusting manually
Press the desired air distribution
control4 or5.
The indicator lamp in the Ubutton
goes out.Adjusting automatically
Press buttonU (page 228).
The indicator lamp on the button
comes on. The air distribution is adjust-
ed automatically.
Adjusting air volume
The air volume for the rear zone corre-
sponds to the air volume settings for the
front passenger side. You can switch off
the air supply for the rear zone.
You can switch off the supplied amount of
air volume.
Press button´ (page 228).
The indicator lamp on the button
comes on.
SymbolFunction
ZDirects air to the center air
vents
YDirects air to the footwells and
the side air vents

230 Controls in detail
3-zone automatic climate control*

231 Controls in detail
3-zone automatic climate control*
1Driver’s door air vent, fixed
2Left side air vent, adjustable
3Thumbwheel for air volume control
for left side and door air vent
4Thumbwheel for air volume control
for left center air vent
5Left center air vent, adjustable
6Right center air vent, adjustable
7Thumbwheel for air volume control
for right center air vent
8Thumbwheel for air volume control
for right side and door air vent
9Right side air vent, adjustable
aFront passenger door air vent, fixed
bAutomatic climate control panel
iFor draft-free ventilation, move the sliders
for center air vents and side air vents to the
middle position.

232 Controls in detail
3-zone automatic climate control*
1Temperature control, left
2Air distribution and air volume
(automatic, manual)
3Air distribution, driver’s side
4Front defroster
0
or, depending on vehicle production
date,
|
5Increasing air volume
6Rear window defroster
7Air distribution, passenger side
8Rear automatic climate control
on/off
>USA only
™Canada only
9Temperature control, right
aAutomatic climate control on/off
bAir distribution, passenger side
cAir distribution, passenger side
dAC cooling on/off
Residual heat/ventilation
eDisplay
fDecreasing air volume
gAir recirculation
hAir distribution, driver’s side
jAir distribution, driver’s side
kInterior temperature sensor
lAdopting driver’s side settings for all
zones

233 Controls in detail
3-zone automatic climate control*
The automatic climate control is a 3-zone
intelligent automatic climate control sys-
tem. Your vehicle interior is divided into
3 zones.With the help of a sun sensor, the automat-
ic climate control determines the relation
of the sun to the vehicle and automatically
adjusts the inside temperature for every
individual zone.
The automatic climate control is operation-
al whenever the engine is running. It cools
the vehicle’s interior according to the an-
gle and intensity of the sun’s rays, the out-
side temperature and the selected
temperature. You can operate the auto-
matic climate control in either the auto-
matic or manual mode.
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 232).
Warning!G
When operating the automatic climate con-
trol, the air that enters the passenger com-
partment through the air vents can be very
hot or very cold (depending on the set tem-
perature). This may cause burns or frostbite
to unprotected 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 232) to direct the air to air
vents in the vehicle interior that are not in
the immediate area of unprotected skin.

234 Controls in detail
3-zone automatic climate control*
Deactivating the automatic climate
control system
Deactivating
Press button´ (page 232) until
the displaye (
page 232) is cleared.
The indicator lamp on the button
comes on.Reactivating
Press buttonU(page 232).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 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 251). 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.
iYou can also press button´
(
page 232) on the automatic climate control
panel.
If you press button0 or, depending on
vehicle production date, button |
(
page 232) to reactivate the automatic
climate control system, the defrosting mode is
activated.

235 Controls in detail
3-zone automatic climate control*
Operating the automatic climate
control system in automatic mode
You can switch the automatic climate con-
trol system on and off separately for each
zone as needed.
Activating
Press buttonU (page 232) while
the engine is running.
The indicator lamp on the button
comes on. Air volume and air distribu-
tion are controlled separately for each
zone.
Use temperature controls1 and9
(
page 232) to separately adjust the
air temperature on each side of the
passenger compartment.
The temperature of the interior is ad-
justed automatically.
Deactivating
Press one button of the air distribution
(
page 232) or press button

orQ (
page 232).
The indicator lamp on buttonU
goes out.
Depending on which button you press –
the air distribution button or the air vol-
ume button
orQ – automatic
control of either the air distribution or
air volume is switched off.
Setting the temperature
Use temperature control1 and9
(
page 232) 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 automatic climate control will adjust to
the set temperature as fast as possible.
Increasing
Turn temperature control1
and/or9 slightly clockwise.
The automatic climate control system
will correspondingly adjust the interior
air temperature.
Decreasing
Turn the temperature control1
and/or9 slightly counterclockwise.
The automatic climate control system
will correspondingly adjust the interior
air temperature.
iWhen operating the automatic climate
control system in automatic mode, you will only
rarely need to adjust the temperature, air volume
and air distribution.
In automatic mode, cooling with dehumidify is
switched on. This function can be switched off if
necessary.

236 Controls in detail
3-zone automatic climate control*
Adjusting air distribution
Use the air distribution controls3,h,
orj for the driver’s side, or7,b, orc
(
page 232) for the passenger side to
separately adjust the air distribution on
each side of the passenger compartment.
The following symbols are found on the
buttons:
Press the desired air distribution but-
ton (
page 232).
The indicator lamp on the desired but-
ton goes out.
Adjusting the air distribution for the
center and side air vents
Opening the center air vents
Turn thumbwheels4 and7
(
page 230) to the right.
The corresponding center air vents on
the left and right are open.
Closing the center air vents
Turn thumbwheels4 and7
(
page 230) to the left.
The corresponding center air vents on
the left and right are closed.Opening the side air vents
Turn thumbwheels3 and8
(
page 230) to the right.
The corresponding side air vents on the
left and right are open.
Closing the side air vents
Turn thumbwheels3 and8
(
page 230) to the left.
The corresponding side air vents on the
left and right are closed.
SymbolFunction
Driver’s
sidePassen-
ger side
6ZDirects air to the
windshield and side
air vents
7aDirects air through
the center, side and
rear passenger
compartment air
vents
8YDirects air to the
footwells and side
air vents