2014 Lexus GS250 engine

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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3885-2. Using the air conditioning system and defogger
GS350_250_OM_OM30E16E_(EE)
■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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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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3955-2. Using the air conditioning system and defogger
5
Interior features
GS350_250_OM_OM30E16E_(EE)
■Button lock function
■Rear control panel illumination off function To prevent inadvertent operation, the buttons
on the rear armrest can be locked. Press until you hear a beep to lock the but-
tons. Pressing again until you hear a
beep will release the lock.
The indicator appears on the display when the
buttons are locked.
Control panel illumination on the rear armrest
can be turned off. Press until you hear a
beep to turn the illumination off. Pressing again until you hear a beep will turn the
illumination on.
NOTICE
■To prevent battery discharge
Do not leave the air conditioning system on longer than necessary when the
engine is off.
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3965-2. Using the air conditioning system and defogger
GS350_250_OM_OM30E16E_(EE)
Rear window and outside rear view mirror
defoggers
On/off
The defoggers will automatically turn
off after 15 to 60 minutes. The opera-
tion time changes according to the
ambient temperature and vehicle
speed.
■Operating conditions
The engine switch must be in the IGNITION ON mode.
These features are used to defog th e rear window, and to remove rain-
drops, dew and frost from the outside rear view mirrors.
CAUTION
■When the outside rear view mirror defoggers are on
Do not touch the rear view mirror surfaces, as they can become very hot and burn
you.
NOTICE
■To prevent battery discharge
Turn the defoggers off when the engine is off.
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3985-2. Using the air conditioning system and defogger
GS350_250_OM_OM30E16E_(EE)
■Operating conditions
The engine switch must be in the IGNITION ON mode.
CAUTION
■When the windshield wiper de-icer is on
Do not touch the glass at the lower part of the windshield or to the side of the front
pillars as the surfaces can become very hot and burn you.
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4015-3. Using the interior lights
5
Interior features
GS350_250_OM_OM30E16E_(EE)
■Illuminated entry system
The lights automatically turn on/off according to engine switch mode, the presence
of the electronic key, whether the doors are locked/unlocked, and whether the doors
are opened/closed.
■To prevent battery discharge
If the interior lights remain on when the engine switch is turned off, the lights will go
off automatically after 20 minutes.
■Customization
Setting (e.g. the time elapsed before lights turn off) can be changed.
(Customizable features: →P. 650)
NOTICE
■To prevent battery discharge
Do not leave the lights on longer than necessary when the engine is not running.
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4125-5. Other interior features
GS350_250_OM_OM30E16E_(EE)
Sun visors and vanity mirrors
To set the visor in the forward
position, flip it down.
To set the visor in the side posi-
tion, flip down, unhook, and swing
it to the side.
To use the side extender, place
the visor in the side position, then
slide it backward.
Slide the cover to open.
The light turns on when the cover is
opened.
Sun visors
1
2
3
Va n i t y m i r r o r s
NOTICE
■To prevent battery discharge
Do not leave the vanity lights on for extended periods while the engine is off.
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