Ac compressor MERCEDES-BENZ GL450 2010 X164 Owner's Manual

The air conditioning uses the refrigerant
R134a. This refrigerant is free of CFCs which
are harmful to the ozone layer.
! If the air conditioning cannot be activated
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 Center.
Automatic mode
When operating the climate control system in
automatic mode, the interior air temperature,
air volume and air distribution are adjusted
automatically.
In automatic mode, cooling with
dehumidification is switched on. This function
can be switched off if necessary.
GWarning!
If you switch off the air conditioning, 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.
XSet the desired temperature
( Y page 178).XActivating: Press button Ã.
The indicator lamp in the button comes on.
The air volume and air distribution are
adjusted automatically.
i The settings for the passenger side are
also used for the rear passenger
compartment.
XDeactivating: Press button I or K .
The indicator lamp in button à goes out.
The automatic operation of air volume
switches off. The selected blower speed isshown in air volume display G
( Y page 175).
or
XPress air distribution button ¯, P , or
O .
The indicator lamp in button à goes out.
The automatic operation of air distribution
switches off.
Setting the temperature
You can adjust the air temperature on each
side of the passenger compartment. You
should raise or lower the temperature setting
in small increments, preferably starting at
72‡ (22†).
XIncreasing/decreasing: Turn
temperature control : and/or C
( Y page 175) slightly clockwise or
counterclockwise.
Adjusting air distribution
The air distribution can be adjusted manually.
The symbols on the buttons represent the
following functions:
SymbolFunction¯Directs air to the windshield and
side air ventsPDirects air through the center
and side air ventsODirects air to the footwells and
side air ventsXPress the desired air distribution button
¯ , P , or O .
The indicator lamp in button à goes out.
The automatic mode is switched off. Air
distribution is controlled according to the
desired button.178Climate controlControls in detail
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Adjusting air volumeXDecreasing/increasing: Press button
I or K .
The automatic mode is switched off. The
selected blower speed is shown in air
volume display G (Y page 175).
When using the Voice Control System, the
blower speed reduces automatically. When
the Voice Control System is not used
anymore, the blower speed increases to the
previously selected level.
Front defroster
You can use this setting to defrost the
windshield, for example if it is iced up.
You can also defog the windshield and the
side windows.
i Keep this setting selected only until the
windshield or the side windows are clear
again.
Activating
XPress button ¦.
The indicator lamp in the button comes on.
The climate control switches to the
following functions automatically:
R most efficient blower speed and heating
power, depending on outside
temperature
R air flows onto the windshield and the
front door windows (side air vents must
be open)
R the air conditioning compressor
switches on at outside temperatures
above approximately 41‡ (5†) for air-
drying
Adjustments
You can adjust the air volume and the
temperature when the front defroster is
switched on. The air flow will remain on the
windshield and front door windows.
XPress button I to decrease or button
K to increase air volume to the desired
level.
The air volume decreases/increases to the
next lower/higher blower speed and
heating switches to the temperature that
was set before the front defroster was
switched on.
The indicator lamp in button ¦ goes out.
The indicator lamp in button Á comes
on.
or
XTurn temperature control : and/or C
( Y page 175) slightly in any direction.
Heating switches to the temperature that
was set before the front defroster was
switched on.
The indicator lamp in button ¦ goes out.
The indicator lamp in button Á comes
on.
i The air conditioning compressor remains
on even if the indicator lamp in button
¦ goes out. This helps to prevent the
windshield from fogging.
Deactivating
XPress button ¦ again.
The indicator lamp in the button goes out.
Defrosting is turned off.
The previous settings are once again in
effect. The air conditioning compressor
remains switched on.
i To deactivate, you can also press button
^ or à .
Windshield fogged on the outside
XSwitch the windshield wipers on
( Y page 103).XPress air distribution button P or O .Climate control179Controls in detailX164_AKB; 5; 31, en-USd2ureepe,Version: 2.11.8.12009-09-11T12:30:16+02:00 - Seite 179Z

The air conditioning uses the refrigerant
R134a. This refrigerant is free of CFCs which
are harmful to the ozone layer.
! If the air conditioning cannot be activated
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 Center.
Automatic mode
You can switch the climate control system on
and off for each zone of the passenger
compartment as desired.
When operating the climate control system in
automatic mode, the interior air temperature,
air volume and air distribution are adjusted
automatically.
In automatic mode, cooling with
dehumidification is switched on. This function
can be switched off if necessary.
GWarning!
If you switch off the air conditioning, 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.
XSet the desired temperature
( Y page 187).XActivating: Press button Ã.
The indicator lamp in the button comes on.
i The settings for the passenger side are
also used for the rear passenger
compartment.
XDeactivating: Press button I or K .
The indicator lamp in button à goes out.
The automatic air volume is switched off
and is controlled according to the desiredsetting. The automatic air distribution
remains switched on.
or
XPress an air distribution button Z14
,
M 14
, \ 14
, P , ¯ 15
, c 14
or
O .
The indicator lamp in button à goes out.
The automatic air distribution is switched
off and is controlled according to the
desired position. The automatic air volume
remains switched on.
Automatic mode with rear climate
control panel
XActivating: Press button Ã.
The indicator lamp in the button comes on.
The temperature, air volume and air
distribution are adjusted automatically.XDeactivating: Press button I or K .
The automatic air volume is switched off
and is controlled according to the desired
setting. The automatic air distribution
remains switched on.
or
XPress button M or P .
The automatic air distribution is switched
off and is controlled according to the
desired position. The automatic air volume
remains switched on.
Setting the temperature
You can set the air temperature for each of
the 3 zones separately.You should raise or
lower the temperature setting in small
increments, preferably starting at 72‡
(22†).
14 Canada only
15 USA only3-zone automatic climate control187Controls in detailX164_AKB; 5; 31, en-USd2ureepe,Version: 2.11.8.12009-09-11T12:30:16+02:00 - Seite 187Z

Symbol
Driver’s
sideSymbol
Passenger
sideFunctionZMDirects air to
the windshield
and side air
vents\PDirects air
through the
center, side
and rear
passenger
compartment
air ventscODirects air to
the footwells
and side air
ventsXPress the desired air distribution button
Z , \ , or c for the driver’s side,
or M , P , or O for the passenger
side.
The automatic mode is switched off. The
indicator lamp in the desired button comes
on.
Adjusting air volume
USA only
XDecrease/increase: Press button I or
K .
The automatic mode is switched off. The
selected blower speed is shown in air
volume display G (Y page 181).
Canada only
XDecrease/increase: Press button I or
K .
The automatic mode is switched off. The
selected blower speed appears in display
J (Y page 183).When using the Voice Control System, the
blower speed reduces automatically. When
the Voice Control System is not used
anymore, the blower speed increases to the
previously selected level.
Front defroster
You can use this setting to defrost the
windshield, for example if it is iced up.
You can also defog the windshield and the
side windows.
i Keep this setting selected only until the
windshield or the side windows are clear
again.
Activating
XPress button ¦.
The indicator lamp in the button comes on.
The climate control switches to the
following functions automatically:
R most efficient blower speed and heating
power, depending on outside
temperature
R air flows onto the windshield and the
front door windows (side air vents must
be open)
R the air conditioning compressor
switches on at outside temperatures
above approximately 41‡ (5†) for air-
drying
Adjustments
You can adjust the air volume and the
temperature when the front defroster is
switched on. The air flow will remain on the
windshield and front door windows.
XPress button I to decrease or button
K to increase air volume to the desired
level.
The air volume decreases/increases to the
next lower/higher blower speed and
heating switches to the temperature that3-zone automatic climate control189Controls in detailX164_AKB; 5; 31, en-USd2ureepe,Version: 2.11.8.12009-09-11T12:30:16+02:00 - Seite 189Z

was set before the front defroster was
switched on.
The indicator lamp in button ¦ goes out.
The indicator lamp in button Á comes
on.
or
XTurn temperature control : and/or C
(USA only) ( Y page 181) or : and/or E
(Canada only) ( Y page 183) slightly in any
direction.
Heating switches to the temperature that
was set before the front defroster was
switched on.
The indicator lamp in button ¦ goes out.
The indicator lamp in button Á comes
on.
i The air conditioning compressor remains
on even if the indicator lamp in button
¦ goes out. This helps to prevent the
windshield from fogging.
Deactivating
XPress button ¦ once more.
The indicator lamp in the button goes out.
Defrosting is turned off.
The previous settings are once again in
effect. The air conditioning compressor
remains switched on.
i To deactivate, you can also press button
^ or à .
Windshield fogged on the outside
XSwitch the windshield wipers on
( Y page 103).XPress button Ã.
The indicator lamp in the button goes out.
Air volume and air distribution are
controlled separately for each zone.
If the automatic air volume and air
distribution are switched off:
XPress buttons O/c 16
and P /
\ 16
.
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.
GWarning!
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
window fogging persists, make sure the air
conditioning is activated, or press button
¦ .
XActivating: Press button d.
The indicator lamp in the button comes on.
i The air recirculation mode is activated
automatically at high outside
temperatures.
The indicator lamp in button d is not lit
when the air recirculation mode is switched
on automatically.
A quantity of outside air is added after
approximately 30 minutes.
If you have turned off the air conditioning
or the outside temperature is below 41‡
(5†), the air recirculation mode will not
switch on automatically.
XDeactivating: Press button d.
The indicator lamp in the button goes out.16 Canada only1903-zone automatic climate controlControls in detail
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Display messagesPossible causes/consequences and M SolutionsÁCompressor
Cooling
DownYou have selected a higher vehicle level. Due to frequent level
changes within a short period, the compressor must cool
down first.
! When the message Compressor Cooling Down appears
in the multifunction display, driving is still possible. Keep in
mind that the ride height of the vehicle is not yet reached,
so you can damage the underbody of the vehicle.XLet the compressor cool down until the message
disappears.
The selected level will be set once the compressor has
cooled down.ÁRising
Max. 12
MPHThe vehicle is adjusting to off-road level 3.XDo not drive faster than 12 mph (20 km/h).ÁMax. 12
MPHYou are driving while using off-road level 3. The message
reminds you of the maximum speed at which you may drive
with off-road level 3.XDo not drive faster than 12 mph (20 km/h).ÆBeing
lowered
Max. 12
MPHThe vehicle is being lowered from off-road level 3 to off-road
level 2.XDo not drive faster than 12 mph
(20 km/h) until the off-road level 2 is reached.ÆReduce
speed to
under
12 MPHYou are driving too fast for the set vehicle level.GWarning!
Adapt your driving style to the modified driving conditions.
Avoid extreme, quick steering maneuvers. Please keep in
mind that the driving characteristics of the vehicle have been
modified. You should therefore drive in off-road level 3 with
particular caution as it could otherwise lead to an accident
and/or serious injury to you or others.
XDo not drive faster than 12 mph
(20 km/h) until the off-road level 2 is reached.8Locking
System
Inoperativ
e Service
RequiredThe differential locks are malfunctioning.XDo not drive faster than 50 mph (80 km/h).XHave the vehicle checked at an authorized Mercedes-Benz
Center.302Vehicle status messages in the multifunction displayPractical hints
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