Lexus GS250 2012 Owner's Manual

4205-2. Using the air conditioning system and defogger
GS350/250_EE (OM30C36E)
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 opening and closing the air out-
lets
1
2
1
2

4215-2. Using the air conditioning system and defogger
5
Interior features
GS350/250_EE (OM30C36E)
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
immediately after is pressed.
Humidity sensor
Fogging up of the windows
The windows will easily fog up when the humidity in the vehicle is high.
Selecting on will dehumidify the air from the outlets and defog the
windshield effectively.
If you 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 out-
side/recirculated air mode button to the recirculated air mode. This is effec-
tive in preventing outside air from entering the vehicle interior. During
cooling operation, setting the recirculated air mode will also cool the vehi-
cle interior effectively.
Outside/recirculated air mode may automatically switch depending on the
temperature setting or the inside temperature. A sensor, which detects humidity inside
the vehicle and the temperature of the
windshield, is provided to detect fog on
the front windscreen. Due to the sensor,
when automatic mode is set the air condi-
tioning 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

4225-2. Using the air conditioning system and defogger
GS350/250_EE (OM30C36E)
Automatic mode for air intake control
In automatic mode, the system detects exhaust gas and other pollutants and
automatically 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.
When the outside temperature falls to nearly 0C (32F)
The dehumidification function may not operate even when is selected.
Air conditioning odors
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
immediately after the air conditioning system is started in automatic
mode.

4235-2. Using the air conditioning system and defogger
5
Interior features
GS350/250_EE (OM30C36E)
“nanoe” *1 system
The air conditioning system adopts “nanoe” generator. This helps to pro-
vide clean air and moisture by emitting electrically charged ions coated with
water particles through the front center vent on driver’s side
*2.
When the fan is turned on, the “nanoe” system is automatically 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 Electric
Works Co., Ltd.
*2: According to temperature and humidity conditions, fan speed and direc-
tion of the air flow, the “nanoe” system may not operate at full capac-
ity.
Air conditioning filter
P. 6 9 3
CAUTION
To prevent the windshield from fogging up
Do not use
during cool air operation in extremely humid weather.
The difference between the temperature of the outside air and that of the
windshield can cause the outer surface of the windshield to fog up, block-
ing 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.

4245-2. Using the air conditioning system and defogger
GS350/250_EE (OM30C36E)
NOTICE
To prevent battery discharge
Do not leave the air conditioning system on longer than necessary when the
engine is stopped.
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 gener-
ator not to work properly.

425
5 5-2. Using the air conditioning system and defogger
Interior features
GS350/250_EE (OM30C36E)
Rear air conditioning system
: If equipped
Air outlets and fan speed are automatically adjusted according to
the temperature setting.
Button lock display
Air outlet mode display
Temperature display
Temperature controlAir outlet selector
Off
Automatic mode1
2
3
4
5
6
7

4265-2. Using the air conditioning system and defogger
GS350/250_EE (OM30C36E)Press .
The air conditioning system will operate, and air outlets and fan speed will
be adjusted automatically.
“AUTO” will be displayed on the control panel.
Press “” on to increase the temperature and “” to
decrease the temperature.
Adjusting the temperature setting
Press “” on to increase the temperature and “” to
decrease the temperature.
Using automatic air conditioning system
Adjusting the settings manually
1
2

4275-2. Using the air conditioning system and defogger
5
Interior features
GS350/250_EE (OM30C36E)
Changing the air outlets
Press .
The air outlets change as follows each time is pressed.
Air flows as shown below according to the mode selected.
Upper body
Upper body and feet
Feet

4285-2. Using the air conditioning system and defogger
GS350/250_EE (OM30C36E)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 opening and closing the air out-
lets (rear center outlets)
1
2

4295-2. Using the air conditioning system and defogger
5
Interior features
GS350/250_EE (OM30C36E)
Button lock function
Rear control panel illumination off function To prevent inadvertent operation, the but-
tons on the rear armrest can be locked.
Press until you hear a beep to lock
the buttons. 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 illumina-
tion 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.