2002 MERCEDES-BENZ G500 Owner's Manual

142 Climate control
Te ch n i c a l
data Instruments
and controlsOperationDrivingInstrument
cluster displayPractical hints Car care Index
Display and controls
1Air volume
2Temperature control, left
3Temperature control, right
4Air distribution control switch5Rear window defroster, see page 149
6Economy mode AC
OFF, see page 147
Residual engine heat utilization, see page 148
7Air distribution and air volume (automatic)
8Air recirculation, see page 146
9Defrosting, see page 145
Important!
This vehicle is equipped with an air conditioning
system that uses R-134a (HFC: hydrofluorocarbon) as a
refrigerant. Repairs should always be performed by a
qualif ied technician, and refrigerant should be collected
in a recovery system for recycling.
72
F
6480
72
F
6480ACOFF
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143 Climate control
Te ch n i c a l
data Instruments
and controlsOperationDrivingInstrument
cluster displayPractical hints Car care Index Climate control
The system is always at operational readiness, except
when manually switched off, see page 147.
The climate control only operates with the engine
running.
The air conditioning will not engage (no cooling) if the
economy mode AC
OFF
is selected, see page 147.
The temperature selector should be left at the desired
temperature setting. The temperature selected is
reached as quickly as possible.
The system will not heat or cool any quicker by setting a
higher or lower temperature.
The desired interior temperature can be selected
separately for the left and right side of the passenger
compartment. Adjust the temperature settings in small
increments.
The climate control removes considerable moisture from
the air during operation in the cooling mode. It is
normal for water to drip on the ground through ducts in
the underbody.Notes:
Do not obstruct the air f low by placing objects on the air
flow-through exhaust slots on the back left and right
trim panel in the rear cargo compartment.
Also keep the air intake grill in front of the windshield
free of snow and debris.
The air conditioner switches itself off for its own
protection if refrigerant is lost. No cooling will then take
place. Economy mode AC
OFF
cannot be switched off.
Have the air conditioner checked by a Mercedes-Benz
Light Truck Center should this happen.
If the vehicle interior has been heated by direct sunlight
and is very hot, ventilate the interior (open door or
windows for a short period) before driving off.
Dust filter
Nearly all dust particles and pollen are filtered out
before outside air enters the passenger compartment
through the air distribution system.
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144 Climate control
Te ch n i c a l
data Instruments
and controlsOperationDrivingInstrument
cluster displayPractical hints Car care Index
Basic setting – automatic mode
In the automatic mode the climate control cools or heats
the interior depending on outside temperature and the
selected interior temperature. With the automatic mode
switched off, the air volume and distribution can still be
set manually.
Press U button. Air volume and distribution are
controlled automatically.
We recommend to set the left and right temperature
to 72
°F (22
°C). Pleas e make chan ges f rom t his s etting to
suit your personal requirements.
Special settings (use only for short duration)
Air distribution and air volume, manual
Press U button. The indicator lamp in the button will
go out.
Select any of the six air volume speeds and the air
distribution.
The air distribution for the right and left side operate
together.Air distribution, manual:
hAir from the center, side and rear passenger
compartment air outlets.
jAir from the windshield and side defroster air
outlets.
kAir from the footwell and rear passenger footwell
air outlets.
VAir from the windshield, center, side defroster,
footwell, rear passenger footwell and rear
passenger compartment air outlets.
To return to automatic mode:
Press the U button. The indicator lamp in the button
illuminates.
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145 Climate control
Te ch n i c a l
data Instruments
and controlsOperationDrivingInstrument
cluster displayPractical hints Car care Index Defrosting
Press the P button. The indicator lamp in the button
illuminates and the fan is set to a higher speed. The
warm air is directed to the defroster and windshield air
outlets.
Switch off air recirculation, if selected. Press
buttonO, the indicator lamp in the button will go
out.
Close center air outlets.
Turn thumbwheels (6, page 140) to the right to open lef t
and right side air outlets. Adjust side air outlets upward.
Pressing the P button again returns the system to
the previous setting.
Notes:
Heavy accumulation of snow and ice should be removed
before activating the defroster.
The defroster uses a large amount of power. To keep the
battery drain to a minimum, turn off the defroster as
soon as the windshield is clear.Windows fogged up on the inside
Switch off the economy mode, if selected. Press
button AC
OFF
. The indicator lamp in the button will go
out.
Switch off air recirculation, if selected. Press
buttonO. The indicator lamp in the button will go
out.
Press the P button. The indicator lamp in the button
illuminates.
Increase temperature setting.
Open the side air outlets and direct them onto the side
windows.
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146 Climate control
Te ch n i c a l
data Instruments
and controlsOperationDrivingInstrument
cluster displayPractical hints Car care Index
Windshield fogged up on the outside
Switch on the windshield wiper.
Switch to manual mode.
Turn air distribution switch to positionh ork.
Air recirculation
Select air recirculation:
Press button O briefly. The indicator lamp in the
button illuminates.
To switch off the air recirculation:
Press button O briefly. The indicator lamp in the
button will go out. The system automatically switches from air
recirculation to fresh air:
•after 30 minutes if the outside temperature is above
about 40
°F(5
°C),
•after 5 minutes if the outside temperature is below
about 40
°F(5
°C),
•after 5 minutes if economy mode AC
OFF is selected.
The system switches automatically to air recirculation at
high outside temperatures. A quantity of outside air is
added after about 30 minutes.
If the windows should fog up from the inside, switch
from recirculated air back to fresh air.
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147 Climate control
Te ch n i c a l
data Instruments
and controlsOperationDrivingInstrument
cluster displayPractical hints Car care Index Climate control - OFF/ON
To switch the climate control off, set the air volume
control switch to position 0.
The fresh air supply to the vehicle interior is shut off.
While driving, use this setting only temporarily,
otherwise the windshield could fog up.
To switch the climate control on again, set air volume
control switch to any speed.Economy mode
The function of this setting corresponds to the
automatic mode. However, because the air conditioning
compressor will not engage (fuel savings), it is not
possible to air condition in this setting.
Press AC
OFF
button to activate. The indicator lamp in the
button illuminates.
Press AC
OFF
button once again to return to the previous
setting. The indicator lamp in the button goes out.
Important!
In the AC
OFF
mode the windows could fog up on the
inside. Switch off AC
OFF
mode.
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148 Climate control
Te ch n i c a l
data Instruments
and controlsOperationDrivingInstrument
cluster displayPractical hints Car care Index
Residual engine heat utilization
With the engine switched off, it is possible to continue
to heat or ventilate the interior for a short while,
dependent of the temperature setting of the climate
control. Air volume and distribution are controlled
automatically.
To select:
Turn the electronic key in starter switch to position 1
or 0 or remove it altogether.
Press button T. The indicator lamp in the button
illuminates.
Set the left and right temperature to your personal
requirements.
This function selection will not activate if the battery
level is insufficient. Press button T again to switch off. The indicator
lamp in the button will go out.
The function switches off automatically:
•if the electronic key in starter switch is turned to
position 2,
•after approximately 30 minutes,
•if the battery voltage drops.
J_G463.book Seite 148 Mittwoch, 19. September 2001 8:06 08

149 Climate control
Te ch n i c a l
data Instruments
and controlsOperationDrivingInstrument
cluster displayPractical hints Car care Index Rear window defroster
Turn the electronic key in starter switch to position 2.
To select:
Press the F button in the control panel of the
automatic air conditioner. The indicator lamp in the
button illuminates.
To c a nc el:
Press the F button in the control panel of the
automatic air conditioner. The indicator lamp in the
button goes out.Notes:
Heavy accumulation of snow and ice should be removed
before activating the defroster.
The rear window defroster uses a large amount of power.
To keep the battery drain to a minimum, turn off the
defroster as soon as the rear window is clear.
The defroster is automatically turned off after
approximately 6–17 minutes of operation depending on
the outside temperature and vehicle speed.
If several power consumers are turned on
simultaneously, or the battery is only partially charged,
it is possible that the defroster will automatically turn
itself off. When this happens, the indicator lamp inside
the switch starts blinking.
As soon as the battery has sufficient voltage, the
defroster automatically turns itself back on.
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