Page 429 of 914
4185-2. Using the air conditioning system and defogger
GS350/250_EE (OM30C36E)
Using the automatic mode
Select .
Select .
The air conditioning system will
operate, and air outlets and
speed will be set automatically.
Select to increase the temperature and to decrease the tem-
perature.
Adjusting the temperature setting
Select .
Select (increase) or
(decrease) on the operation
screen.
The air conditioning system
switches between individual and
simultaneous modes each time
is selected.
Disabling the switches on the rear armrest.
Select .
Changing the rear seat settings (with rear air conditioning
system)
1
2
3
1
2
Page 430 of 914
4195-2. Using the air conditioning system and defogger
5
Interior features
GS350/250_EE (OM30C36E)Operates pollen removal mode
on/off.
Outside air mode switches to
(recirculated air) mode. Pol-
len is removed from the air and the
air flows to the upper part of the
body.
Usually the system will turn off
automatically after approximately
1 to 3 minutes.
Operates S-FLOW mode on/off.
When the S-FLOW switch is
pressed, the airflow changes as fol-
lows.
Without rear air conditioning sys-
tem: 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 unoccu-
pied, the set temperature, outside
humidity and temperature inside
the cabin are assessed, and air
flows to the driver seat only.
Pollen removal mode button
S-FLOW mode button
Page 432 of 914

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
Page 433 of 914

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 0C (32F)
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.
Page 434 of 914

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.
Page 436 of 914
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
Page 437 of 914
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
Page 441 of 914
4305-2. Using the air conditioning system and defogger
GS350/250_EE (OM30C36E)
Rear window and outside rear view mirror
defoggers
On/off
The defoggers will automatically
turn off after 15 to 60 minutes. The
operation 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 the rear window, and to remove
raindrops, 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.