2015 Lexus GS350 air condition

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3115-2. Using the air conditioning system and defogger
5
Interior features
■Using the automatic mode
Select on the operation screen.
Select “REAR AUTO” on the
screen.
The air conditioning system will
operate, and air outlets and speed
will be set automatically.
When the rear seat heaters are set
to automatic mode, the system is
operated automatically according
to the set temperature, outside
temperature, etc.
Select to increase the temperature and to decrease the
temperature.
■Adjusting the temperature setting
Select on the operation screen.
Select (increase) or
(decrease) on the operation
screen.
The air conditioning system
switches between individual and
simultaneous modes each time
“3-ZONE” on the option control
screen is selected.
Changing the rear seat settings (with rear air conditioning sys-
tem)
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3
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2

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■Disabling the switches on the rear armrest.
Select on the operation screen.
Select .
Rear seat heater switches ( P. 3 4 7 )
are also locked.
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GS350_OM_OM30F69U_(U)
3135-2. Using the air conditioning system and defogger
5
Interior features
Select on the operation screen to display the option control
screen.
Operate micro dust and pollen
filter on/off.
Outside air mode switches to
(recirculated air) mode. Pollen is
removed from the air and the air flows
to the upper part of the body.
Usually the system will turn off auto-
matically after approximately 1 to 3
minutes.
Operates S-FLOW mode on/off.
When the S-FLOW mode button is
pressed, the airflow changes as fol-
lows.
Without rear air conditioning system:
Air flows to the front seats only.
*
With rear air conditioning system:
Air flows to the front seats only, and if
the passenger seat is unoccupied, the
set temperature, outside humidity and
temperature inside the cabin are
assessed, and air flows to the driver
seat only.
*
*
: Air may also flow to the rear seats depending on the situation.
Micro dust and pollen filter button
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S-FLOW mode button

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■Front center outlets and front side outlets
Direct air flow to the left or right,
up or down.
Turn the knob to open or close
the vent.
■Rear seat outlets
Direct air flow to the left or right,
up or down.
Turn the knob to open or close
the vent.
Adjusting the position of and op ening and closing the air outlets
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2
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GS350_OM_OM30F69U_(U)
3155-2. Using the air conditioning system and defogger
5
Interior features
■Registering air conditioning settings to electronic keys
●Unlocking the vehicle using an electronic key and turning the engine switch to
IGNITION ON mode will recall that ke y’s registered air conditioning settings.
●When the engine switch is turned off, the current air conditioning settings will auto-
matically be registered to the electronic key that was used to unlock the vehicle.
The system may not operate correctly if more than one electronic key is in the vicinity
or if the smart access system with push-button start is used to unlock a passenger
door.
Settings for the electronic key and the co rresponding door can be changed. Contact
your Lexus dealer.
■Using automatic mode
●Fan speed is adjusted automatically according to the temperature setting and the
ambient conditions.
Therefore, the fan may stop for a while until warm or cool air is ready to flow imme-
diately after is pressed.
●Cool air may blow around the upper body even when the heater is on due to sun-
light.
■Humidity sensor
A sensor, which detects humidity inside the
vehicle and the temperature of the wind-
shield, is provided to detect fog on the front
windscreen. Due to the sensor, when auto-
matic mode is set the air conditioning may
make the following controls:
●Changing the amount of air flow
●Changing the amount of air introduced from
outside when in outside air mode with the air
vents in the position
●Changing the settings of the air vents to
when the is set

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■Fogging up of the windows
●The windows will easily fog up when the humidity in the vehicle is high. Turning
“A/C” on will dehumidify the air from th e outlets and defog the windshield effec-
tively.
●If you turn “A/C” off, the windows may fog up more easily.
●The windows may fog up if the recirculated air mode is used.
■Outside/recirculated air mode
●When driving on dusty roads such as tunn els or in heavy traffic, set the outside/
recirculated air mode button to the recirculated air mode. This is effective in pre-
venting outside air from entering the vehicl e interior. During cooling operation, set-
ting the recirculated air mode will also cool the vehicle interior effectively.
●Outside/recirculated air mode may automatically switch depending on the tem-
perature setting or the inside temperature.
■When the outside temperature exceeds 75°F (24°C) and the air conditioning sys-
tem is on
●In order to reduce the air conditioning power consumption, the air conditioning
system may switch to recirculated air mode automatically. This may also reduce
fuel consumption.
●Recirculated air mode is selected as a default mode when the engine switch is
turned on.
●It is possible to switch to outside air mode at any time by pressing .
■Automatic mode for air intake control
In automatic mode, the system detects ex haust gas and other pollutants and auto-
matically switches between outside air and recirculated air modes.
When the dehumidification function is off, and the fan is operating, turning automatic
mode on will activate the dehumidification function.

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Interior features
■Micro dust and pollen filter
●In order to prevent the windshield from fogging up when the outside air is cold, the
following may occur:
• Outside air mode does not switch to (recirculated air) mode.
• The dehumidification function operates.
• The operation cancels after approximately 1 minute.
●In rainy weather, the windows may fog up. Press .
●In extremely humid weather, the windows may fog up.
●The pollens are filtered out even if the mi cro dust and pollen filter is turned off.
■Operation of the air conditioning system in Eco drive mode
In the Eco drive mode, the air conditioning system is controlled as follows to priori-
tize fuel efficiency:
●Engine speed and compressor operation co ntrolled to restrict heating/cooling
capacity
●Fan speed restricted when automatic mode is selected
To improve air conditioning performanc e, perform the following operations:
●Adjust the fan speed
●Turn off Eco drive mode
■When the S-FLOW mode operates
If air flows to the driver’s seat only, the temperature setting for the front passenger’s
seat is not displayed.
■When the outside temperature falls to nearly 32 F (0C)
The dehumidification function may not operate even when “A/C” on the option con-
trol screen is selected.

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■Ventilation and air conditioning odors
●To let fresh air in, set the air conditioning system to the outside air mode.
●During use, various odors from inside an d outside the vehicle may enter into and
accumulate in the air condit ioning system. This may then cause odor to be emitted
from the vents.
●To reduce potential odors from occurring:
• It is recommended that the air conditio ning system be set to outside air mode
prior to turning the vehicle off.
• The start timing of the blower may be delayed for a short period of time immedi- ately after the air conditioning system is started in automatic mode.
■Air conditioning filter
 P. 4 2 3
■Customization
Settings (e.g. exhaust gas sensor sensitivity) can be changed.
(Customizable features: P. 559)
CAUTION
■To prevent the windshield from fogging up
Do not use
during cool air operation in extremely humid weather. The differ-
ence between the temperature of the outs ide air and that of the windshield can
cause the outer surface of the windshield to fog up, blocking your vision.
NOTICE
■To prevent battery discharge
Do not leave the air conditioning system on longer than necessary when the
engine is stopped.
■Humidity sensor
Follow these points to avoid damaging the sensor:
●Do not disassemble the sensor
●Do not spray the glass cleaner on the sensor or subject it to strong impacts
●Do not stick anything on the sensor