Lexus GS250 2014 Owner's Manual

3815-2. Using the air conditioning system and defogger
5
Interior features
GS350_250_OM_OM30E16E_(EE)
Feet
*: When the warming function is operat-ing, air flows to the upper body as well
to warm the upper body effectively.
Feet and windshield
Press .
The mode switches among (recirculated air mode), automatic and
(outside air mode) modes each time the button is pressed.
When the system is switched to auto matic mode, the air conditioning system
operates automatically.
*
*
Switching between outside air and recirculated air modes
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3825-2. Using the air conditioning system and defogger
GS350_250_OM_OM30E16E_(EE)
■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 settin gs (with rear air conditioning
system)
1
2
3
1
2
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3835-2. Using the air conditioning system and defogger
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Interior features
GS350_250_OM_OM30E16E_(EE)
■Disabling the switches on the rear armrest.
Select on the operation screen.
Select .
Rear seat heater switches ( →P. 4 1 9 )
are also locked.
1
2
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3845-2. Using the air conditioning system and defogger
GS350_250_OM_OM30E16E_(EE)
Select on the operation screen to display the option control
screen.
Operate pollen removal mode
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.
Pollen removal mode button
1
2
S-FLOW mode button
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3855-2. Using the air conditioning system and defogger
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Interior features
GS350_250_OM_OM30E16E_(EE)
■Front center outlets and front side outletsDirect air flow to the left or
right, up or down.
Turn the knob to open or close
the vent.
■Rear seat outletsDirect air flow to the left or
right, up or down.
Turn the knob to open or close
the vent.
Adjusting the position of and opening and closing the air outlets
1
2
1
2
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3865-2. Using the air conditioning system and defogger
GS350_250_OM_OM30E16E_(EE)
■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 key’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 entry & start system is used to unlock a passenger door.
Settings for the electronic key and the corresponding door can be changed. Contact
any authorized Lexus dealer or repairer, or another duly qualified and equipped pro-
fessional.
■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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3875-2. Using the air conditioning system and defogger
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Interior features
GS350_250_OM_OM30E16E_(EE)
■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 the 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 tunnels 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 vehicle 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.
■Automatic mode for air intake control
In automatic mode, the system detects exhaust 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.
■Pollen removal mode
●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 pollen removal mode is turned off.
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3885-2. Using the air conditioning system and defogger
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■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 controlled to restrict heating/cooling
capacity
●Fan speed restricted when automatic mode is selected
To improve air conditioning performance, 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 0 °C (32 °F)
The dehumidification function may not operate even when “A/C” on the option con-
trol screen is selected.
■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 and outside the vehicle may enter into and
accumulate in the air conditioning system. This may then cause odor to be emitted
from the vents.
●To reduce potential odors from occurring:
• It is recommended that the air conditioning 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.
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3895-2. Using the air conditioning system and defogger
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Interior features
GS350_250_OM_OM30E16E_(EE)
■nanoe *1 system (if equipped)
Your vehicle incorporates a nanoe
™ device, which is considered a biocidal product.
The nanoe™ device generates charged water particles from the ambient air and
these purify the air in the cabin by suppressing bacteria.
The nanoe™ device is considered a biocidal product in the EU according to the
interpretation of Regulation (EU) No 528/2012.
Active substances: Charged water particles (nano) containing hydroxyl radicals,
generated from ambient air
nanoe™ helps to provide purified air by emitting electrically charged water particles
through the front center vent on the driver’s side
*2.
●When the fan is turned on and “nanoe” on the option control screen is selected, the
nanoe  system is activated.
●When the fan is operated in the following conditions, system performance will be
maximized. If the following conditions are not met, performance will be limited.
• The , or air outlets are being used.
• The front center vent on driver’s side is open.
●When nanoe  is generated, a small amount of ozone is emitted and may be faintly
smelled in some situations. However, this is approximately the same as the amount
that already exists in nature, such as in forests, and it has no affect on the human
body.
●A slight noise may be heard during operation. This is not a malfunction.
*1:nanoe  and the nanoe  mark are trademarks of Panasonic Corporation.
*2: According to temperature and humidity conditions, fan speed and direction of
the air flow, the nanoe  system may not operate at full capacity.
■Air conditioning filter
→ P. 4 8 7
■Customization
Settings (e.g. exhaust gas sensor sensitivity) can be changed.
(Customizable features: →P. 650)
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3905-2. Using the air conditioning system and defogger
GS350_250_OM_OM30E16E_(EE)
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 outside air and that of the windshield can
cause the outer surface of the windshield to fog up, blocking your vision.
■nanoe  generator
Do not disassemble or repair the generator because it contains high voltage parts.
Contact any authorized Lexus dealer or repairer, or another duly qualified and
equipped professional if the generator needs repair.
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
■To prevent damage to the nanoe 
Do not insert anything into the driver’s side vent, attach anything to it, or use sprays
around the driver’s side vent. These things may cause the generator not to work
properly.
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