air conditioning Lexus GX470 2005 Scheduled Maintenance Guide / LEXUS 2005 GX470 (OM60B11U) User Guide

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(a) Climate control
SETTING OPERATION Ð automatic control
1. Push the ªAUTOº button.
An indicator light will illuminate to show that the automatic
operation mode has been selected.
Air flow quantity, switching of the diffusers, on±off of the air
conditioning and switching of the air intake between
RECIRCULATED AIR and OUTSIDE AIR are automatically
adjusted. The operation status is shown by each indicator.
When one of the manual control buttons is depressed while
operating in automatic mode, the operation corresponding to
the button depressed is set. Other conditions continue to be
adjusted automatically.
Push the ªOFFº button to turn the air conditioning system off.
2. Use the ªTEMPº or ªPASSENGER TEMPº button to set
the desired temperature.
The ªTEMPº or ªPASSENGER TEMPº button is used to set the
desired temperature. The temperature will be controlled on the
driver and passenger sides simultaneously or individually.
ªTEMPº button Ð Changes the temperature on the driver and
passenger sides simultaneously or the driver side only.
ªPASSENGER TEMPº button Ð Changes the temperature
settings separate from driver side.
ªDUALº button Ð Changes the mode of the temperature
setting.
The indicator on the ªDUALº button has two modes:
 With the indicator on Ð For individual temperature setting
 With the indicator off Ð For simultaneous temperature
setting

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21PY027
Driver side setting
Passenger side setting
Mixed settingSETTING OPERATION Ð manual control
When one of the manual control buttons is depressed
while operating in automatic mode, the mode relevant to
the depressed button is set. Other conditions continue to
be adjusted automatically.
If manual air flow selection is desired Ð
The outlets from which air is delivered can be selected
manually by pushing the button. The function of each mode is
as follows:
1Panel
Ð Air flows mainly from the instrument panel vents.
2Bi±level Ð Air flows from both the floor vents and the
instrument panel vents.
3Floor Ð Air flows mainly from the floor vents.
4Floor/Windshield Ð Air flows mainly from the floor vents
and windshield vents.

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If quick heating or cooling is desired Ð
Push the ªTEMPº or ªPASSENGER TEMPº button on either
side
and hold it until ªMAX. HOTº or ªMAX. COLDº appears on
the display.
If manual fan speed control is desired Ð

1Fan speed at low2Fan speed at high
The fan speed can be set to your desired speed by pushing the
appropriate side of fan speed control button. The higher the fan
speed is, the more air is delivered. Pushing the ªOFFº button
turns off the fan.
To remove exterior windshield frost, use the high speed setting. If manual switching of air intake is desired Ð
Each time you push the air intake control button, the mode
changes in order from the RECIRCULATED AIR mode to
OUTSIDE AIR mode, then back to the RECIRCULATED AIR
mode. Each indicator light shows which mode is now selected.
1RECIRCULATED AIR mode Ð
If quick circulation of
cooled air is desired, select this mode.
2OUTSIDE AIR mode Ð The system will take fresh
outside air into the vehicle.
To prevent fogging up of the windshield, the air intake mode
may change automatically to the OUTSIDE AIR mode
depending on the condition of the air conditioning system.
For example, when the ambient temperature is low, the air
intake mode may change automatically to the OUTSIDE AIR
mode. This is not a malfunction.

AIR CONDITIONING
250If quick circulation of cooled air is desired, push the air intake
control
button for RECIRCULATED AIR. The indicator light will
come on.
For normal use, it is best to keep the air intake control button
set to the OUTSIDE AIR mode. If recirculated air is used during
heating, the windows will fog up more easily.
If manual on±off of the air conditioning is desired Ð
Push the ªA/Cº button to turn the air conditioning on and push
it again to turn the air conditioning off.
The air conditioning does not work if the outside temperature
is lowered down to around 0 C (32F).
If the system is used for ventilation, heating in dry weather or
removing frost or exterior fog on the windshield, turn the air
conditioning off once it is no longer required. This will improve
fuel economy. The air conditioning can be used for year±round
automatic temperature control including cooling and
dehumidifying operation.
If the air conditioning compressor does not operate, the
indicator of the ªA/Cº button will blink. If the indicator of the
ªA/Cº button blinks even when the ªA/Cº button is pushed
again, have the compressor checked by your nearest Lexus
dealer.
(b) Windshield defogging and defrosting
To remove interior fog on the windshield Ð
Push the windshield air flow button.
To remove frost or exterior fog on the windshield Ð
1. Push the ªTEMPº button to set the maximum temperature.
2. Push the windshield air flow button.
3. Push the fan speed control button on the right side to obtain
a maximum air flow.
4. Leave the ªA/Cº button off.
When the windshield air flow button is pushed, air flows mainly
from the windshield vents and turns on the defogging function
with the purpose of clearing the front view.
Pushing this button once again returns the air flow mode to the
last one used.

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This button allows the air intake to select the OUTSIDE AIR
mode automatically. This is to clean up the front view more
quickly. If you want to return the setting to the
RECIRCULATED
AIR mode, push the air intake control button
once again.
Push the ªA/Cº button for dehumidified heating or cooling. This
setting clears the front view more quickly.
CAUTION
Do not use the windshield air flow button during cooled
air operation in extremely humid weather. The
difference between the temperature of the outside air
and that of the windshield could cause the outer surface
of the windshield to fog up blocking your vision.
(c) Operating tips
 To help cool down the interior after parking in the hot sun,
drive for the first few minutes with the windows open. After
the excess heat has blown away, close the windows.
 Make sure the air inlet grilles in front of the windshield are
not blocked by leaves or other obstructions.
 If air flow control is not satisfactory, check the side vents and
rear vents. (See ª(d) Center vents and side ventsº.)
 On humid days, do not blow cold air on the windshield. The
windshield could fog up because of the difference in air
temperature on the inside and outside of the windshield.
 Keep the area under the front seats clear to allow air to
circulate throughout the vehicle.
 On cold days, set the fan speed to high for a minute to help
clear the intake ducts of snow or moisture. This can reduce
the amount of fogging on the windows.
 When driving on dusty roads, close all windows. If dust
thrown up by the vehicle is still drawn into the vehicle after
closing the windows, it is recommended that the air intake
be set to the OUTSIDE AIR mode and the fan speed to any
setting except ªOFFº.

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If following another vehicle on a dusty road, or driving in
windy and dusty conditions, it is recommended that the air
intake be temporarily set to the RECIRCULATED AIR
mode, which will close off the outside passage and prevent
outside air and dust from entering the vehicle interior. Heating
For best results, set controls to:
For automatic operation Ð
Push in the ªAUTOº button.
Temperature Ð To the desired temperature
Air intake Ð OUTSIDE AIR
Air conditioning Ð OFF
For manual operation Ð Fan speed Ð To the desired fan speed
Temperature Ð Towards high temperature
Air intake Ð OUTSIDE AIR
Air flow Ð FLOOR
Air conditioning Ð OFF
 For quick heating, select RECIRCULATED AIR for a few
minutes. To keep the windows from fogging, select
OUTSIDE AIR after the vehicle interior has been warmed.
 Push the ªA/Cº button on for dehumidified heating.
 Choose floor/windshield air flow to heat the vehicle interior
while defrosting or defogging the windshield. Air conditioning
For best results, set controls to:
For automatic operation Ð
Push in the ªAUTOº button.
Temperature Ð To the desired temperature
Air intake Ð OUTSIDE AIR
Air conditioning Ð ON
For manual operation Ð

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Fan speed Ð
To the desired fan speed
Temperature Ð Towards low temperature
Air intake Ð OUTSIDE AIR
Air flow Ð PANEL
Air conditioning Ð ON
 For quick cooling, select RECIRCULATED AIR for a few
minutes. Ventilation
For best results, set controls to:
For automatic operation Ð
Push in the ªAUTOº button.
Temperature Ð Towards low temperature
Air intake Ð OUTSIDE AIR
Air conditioning Ð OFF
For manual operation Ð Fan speed Ð To the desired fan speed
Temperature Ð Towards low temperature
Air intake Ð OUTSIDE AIR
Air flow Ð PANEL
Air conditioning Ð OFF
Defogging and defrosting
Ð The inside of the windshield For best results, set controls to:
For automatic operation Ð
Temperature Ð Towards high temperature to heat;
low temperature to cool
Air intake Ð OUTSIDE AIR
Air flow Ð WINDSHIELD

AIR CONDITIONING
254For manual operation Ð
Fan speed Ð To the desired fan speed
Temperature Ð Towards high temperature to heat;
low temperature to cool
Air intake Ð OUTSIDE AIR
Air flow Ð WINDSHIELD
When the windshield air flow button is pushed, air flows mainly
from the windshield vents and turns on the defogging function
with the purpose of clearing the front view.
Pushing this button once again returns the air flow mode to the
last one used.
This button allows the air intake to select OUTSIDE AIR mode
automatically. This is to clean up the front view more quickly.
If you want to return the setting to RECIRCULATED AIR mode,
push the air intake control button once again.
Push the ªA/Cº button for dehumidified heating or cooling. This
setting clears the front view more quickly.
 On humid days, do not blow cold air on the windshield Ð the
difference between the outside and inside temperatures
could make the fogging worse. Ð The outside of the windshield
For best results, set controls to:
For automatic operation Ð
Temperature Ð Towards high temperature
Air intake Ð OUTSIDE AIR
Air flow Ð WINDSHIELD
For manual operation Ð
Fan speed Ð To the desired fan speed
Temperature Ð Towards high temperature
Air intake Ð OUTSIDE AIR
Air flow Ð WINDSHIELD

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When
the windshield air flow button is pushed, air flows mainly
from the windshield vents and turns on the defogging function
with the purpose of clearing the front view.
Pushing this button once again returns the air flow mode to the
last one used. This
button allows the air intake to select OUTSIDE AIR mode
automatically. This is to clean up the front view more quickly.
If you want to return the setting to RECIRCULATED AIR mode,
push the air intake control button once again.
Push the ªA/Cº button for dehumidified heating or cooling. This
setting clears the front view more quickly.
 To heat the vehicle interior while defrosting the windshield,
choose floor/windshield air flow.

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(d) Center vents and side vents

Center vents

Side vents
If air flow control is not satisfactory, check the center
vents and side vents. The center vents and side vents may
be opened or closed as shown.
(e) Checking and replacing the air conditioning filter
The air conditioning filter information label is placed in the
glove box as shown and indicates that a filter has been
installed.
The air conditioning filter prevents dust from entering the
vehicle through the air conditioning vent.