2013 Lexus GS350 Owner's Manual

352
GS350_U (OM30C34U)
5-2. Using the air conditioning system and defogger
Press .
The dehumidification function oper-
ates and fan speed increases.
Set the outside/recirculated air mode
button to outside air mode if the recir-
culated air mode is used. (It may
switch automatically.)
To defog the windshield and the side
windows early, turn the air flow and
temperature up.
To return to the previous mode, press
again when the windshield is
defogged.
[
Upper body
*: In “AUTO” mode, air may flow to the feet as well as to the body to prevent
your feet from getting sweaty.
Upper body and feet
Defogging the windshield
Air outlets and air flow
*
*

GS350_U (OM30C34U)
3535-2. Using the air conditioning system and defogger
5
Interior features
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 automatic mode, the air conditioning system
operates automatically.
*
*
Switching between outside air and recirculated air modes

354
GS350_U (OM30C34U)
5-2. Using the air conditioning system and defogger
■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 temper-
ature.
■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.
Changing the rear seat settings (with rear air conditioning sys-
tem)
1
2
3
1
2

GS350_U (OM30C34U)
3555-2. Using the air conditioning system and defogger
5
Interior features
■Disabling the switches on the rear armrest.
Select .
Operates micro dust and pollen fil-
ter 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 switch is pressed,
the airflow changes as follows.
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.
Micro dust and pollen filter button
S-FLOW mode button

356
GS350_U (OM30C34U)
5-2. Using the air conditioning system and defogger
■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 outlets
1
2
1
2

GS350_U (OM30C34U)
3575-2. Using the air conditioning system and defogger
5
Interior features
■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 immedi-
ately 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 effec-
tively.
●If you turn 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 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.
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

358
GS350_U (OM30C34U)
5-2. Using the air conditioning system and defogger
■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 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.
■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 micro dust and pollen filter is turned off.
■When the outside temperature falls to nearly 32°F (0 °C)
The dehumidification function may not operate even when is selected.

GS350_U (OM30C34U)
3595-2. Using the air conditioning system and defogger
5
Interior features
■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 modeprior 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. 6 4 4
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.
NOTICE
■To prevent battery discharge
Do not leave the air conditioning system on longer than necessary when the
engine is stopped.