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Lexus GS350 (2020 year). Manual in english - page 20

323

5-2. Using the air conditioning system and defogger

Inte
rior fe

ature

■

Using the automatic mode

Press

or select “AUTO” on the control screen.

Press

to switch to automatic air intake mode.

The air conditioning system automatically switches between outside air and recir-

culated air modes.

Adjust the temperature setting. (



P. 319)

To stop the operation, press the “OFF” button.
Air outlets and fan speed for the driver and passenger seats may be adjusted sepa-

rately depending on the temperature setting.
When the front seat heaters and ventilators/rear seat heaters are set to AUTO

mode, the system is operated automatically according to the set temperature, out-

side temperature, etc.

■

Automatic mode indicator

If the fan speed setting or air flow modes are operated, the automatic mode
indicator goes off. However, automatic mode for functions other than that
operated is maintained.

Air conditioning control

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5-2. Using the air conditioning system and defogger

■

Switching between outside air and recirculated air modes

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 oper-

ates automatically.

■

Defogging the windshield

Defoggers are used to defog the windshield and front side windows.

Press .

Set the outside/recirculated air mode button to outside air mode if the recirculated

air mode is used. (It may switch automatically.)

To defog the windshield and the side windows early, turn the air flow and tempera-

ture up.

To return to the previous mode, press

again when the windshield is

defogged.

■

Defogging the rear window and outside rear view mirrors

Defoggers are used to defog the rear window and to remove raindrops, dew and frost

from the outside rear view mirrors.

Press .

The defoggers will automatically turn off after 15 to 60 minutes. The operation

time changes according to the ambient temperature and vehicle speed.

■

Windshield wiper de-icer (if equipped)

This feature is used to prevent ice from building up on the windshield and
wiper blades.
Select

on the option control screen.

The windshield wiper de-icer will automatically turn off after approximately 15

minutes.

■

Micro dust and pollen filter

Pollen is removed from the air and the air flows to the upper part of the body.
Select on the

option control screen.

Usually the system will turn off automatically.
In order to prevent the windshield from fogging up when the outside air is cold, the

dehumidification function may operate.
The pollens are filtered out even if the micro dust and pollen filter is turned off.

Other functions

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5-2. Using the air conditioning system and defogger

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Select

on the control screen to display the rear air conditioning control

screen.

■

Using the automatic mode

Select “REAR AUTO” on the screen.

The air conditioning system will operate, and air outlets and speed will be set auto-

matically.
When the rear seat heaters are set to automatic mode, the system is operated

automatically according to the set temperature, outside temperature, etc.

Adjust the temperature setting.

To stop the operation, select “REAR OFF”.

■

Adjusting the temperature setting

Select



to increase the temperature and



to decrease the tempera-

ture.

The air conditioning system switches between individual and simultaneous modes

each time “3-ZONE” on the control screen is selected.

■

Disabling the switches on the rear armrest.

Select .

Rear seat heater switches (



P. 333) are also locked.

■

Location of air outlets

The air outlets and air volume changes

according to the selected air flow mode.

Changing the rear seat settings (with rear air conditioning system)

Air outlets

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5-2. Using the air conditioning system and defogger

■

Adjusting the air flow direction and opening/closing the air outlets

Direct air flow to the left or right, up or down.
Turn the knob to open or close the vent.

■

Registering air conditioning settings to electronic keys

●

Unlocking the vehicle using an electronic key and turning the engine switch to IGNI-

TION ON mode will recall that key’s registered air conditioning settings.

●

When the engine switch is turned off, the current air conditioning settings will automat-

ically 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 access system with push-button start is used to unlock a passenger door.

●

Settings for the electronic key and the corresponding door can be changed. Contact

your Lexus dealer.

■

Using automatic mode

Fan speed is adjusted automatically according to the temperature setting and the ambi-

ent conditions.

Therefore, the fan may stop for a while until warm or cool air is ready to flow immediately
after

is pressed.

Cool air may blow around the upper body even when the heater is on due to sunlight.

■

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 effectively.

●

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/recircu-

lated air mode button to the recirculated air mode. This is effective in preventing out-

side air from entering the vehicle interior. During cooling operation, setting the

recirculated air mode will also cool the vehicle interior effectively.

●

Outside/recirculated air mode may automatically switch depending on the tempera-

ture setting or the inside temperature.



Front center outlets and front side
outlets



Rear seat outlets

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5-2. Using the air conditioning system and defogger

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■

When the outside temperature exceeds 75°F (24°C) and the air conditioning system

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 consump-

tion.

●

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 automati-

cally 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.

■

Operation of the air conditioning system in Eco drive mode

In the Eco drive mode, the air conditioning system is controlled as follows to prioritize

fuel efficiency:

●

Engine speed and compressor operation controlled to restrict heating/cooling capac-

ity

●

Fan speed restricted when automatic mode is selected

To improve air conditioning performance, perform the following operations:

●

Turn off eco air conditioning mode

●

Adjust the fan speed

●

Turn off Eco drive mode (



P. 281)

■

Eco air conditioning mode

When Eco drive mode is selected using the drive mode select switch, eco air condition-

ing mode turns on.
When a drive mode other than Eco drive mode is selected, eco air conditioning mode

may turn off.

■

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 is low

The dehumidification function may not operate even when “A/C” on the option control

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 accu-

mulate 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.

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5-2. Using the air conditioning system and defogger

■

Air conditioning filter



P. 409

■

Customization

Settings (e.g. exhaust gas sensor sensitivity) can be changed.

(Customizable features:



P. 542)

WARNING

■

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.

■

To prevent burns

●

Do not touch the rear view mirror surfaces when the outside rear view mirror defog-

gers are on.

●

Vehicles with windshield wiper de-icer: Do not touch the glass at lower part of the

windshield or to the side of the front pillars when the windshield wiper de-icer is on.

NOTICE

■

To prevent battery discharge

Do not leave the air conditioning system on longer than necessary when the engine is

stopped.

●

Do not place anything on the instrument

panel which may cover the air outlets. Other-

wise, air flow may be obstructed, preventing

the windshield defoggers from defogging.

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5-2. Using the air conditioning system and defogger

Inte
rior fe

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Rear air conditioning system



■

Adjusting the temperature setting

Press “



” on

to increase the temperature and “



” to decrease the

temperature.

■

Changing the air outlets

Press .

The air outlets change as follows each time

is pressed.

Air flows to the upper body.

Air flows to the upper body and feet.

Air flows to the feet.



: If equipped

Air outlets and fan speed are automatically adjusted according to the tem-
perature setting.

Control panel

Set automatic mode on/off
Turn the fan off

Change the airflow mode
Adjust the temperature setting

3
4

330

5-2. Using the air conditioning system and defogger

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.

Adjust the temperature setting.

When the rear seat heaters are set to “AUTO” mode, the system is operated automat-

ically according to the set temperature, outside temperature, etc.
To stop the operation, press the “OFF” button.

■

Location of air outlets

The air outlets and air volume
changes according to the selected
air flow mode.

■

Adjusting the air flow direction and opening/closing the air outlets

Direct air flow to the left or right,
up or down.
Turn the knob to open or close
the vent.

Using automatic air conditioning system

Air outlets

331

5-2. Using the air conditioning system and defogger

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■

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 buttons. Press-
ing

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 illumina-

tion 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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5-2. Using the air conditioning system and defogger

Heated steering wheel



/seat heaters



/seat ventilators



Turns the heated steering wheel on/off

The indicator light comes on when the

heater is operating.

●

The heated steering wheel can be used when the engine switch is in IGNITION ON

mode.

●

The heated steering wheel will automatically turn off after about 30 minutes.



: If equipped

Heated steering wheel and seat heaters heat the side grips of the steering
wheel and seats, respectively. Seat ventilators maintain good airflow by blow-
ing air from the seats.

WARNING

●

Care should be taken to prevent injury if anyone in the following categories comes in

contact with the steering wheel or seats when the heater is on:
• Babies, small children, the elderly, the sick and the physically challenged

• Persons with sensitive skin

• Persons who are fatigued

• Persons who have taken alcohol or drugs that induce sleep (sleeping drugs, cold

remedies, etc.)

●

Observe the following precautions to prevent the minor burns or overheating:
• Do not cover the seat with a blanket or cushion when using the seat heater.

• Do not use seat heater more than necessary.

NOTICE

●

To prevent damage to the seat heaters/seat ventilators, do not put heavy objects that

have an uneven surface on the seat and do not stick sharp objects (needles, nails, etc.)

into the seat.

●

To prevent battery discharge, do not use the functions when the engine is off.

Heated steering wheel (If equipped)

333

5-2. Using the air conditioning system and defogger

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■

Front seat heaters and ventilators (if equipped)/rear seat heaters (if
equipped)

Seat heater switches

The indicator light (yellow) on the switch comes on when the seat heater is operating.

Seat ventilator switches (front seats only)

The indicator light (green) on the switch comes on when the seat ventilator is operat-

ing.

Level indicator lights

The seat heater temperature level or the seat ventilator fan speed level (for front seats

only) is displayed.

“AUTO” indicator lights

Seat heaters (if equipped)/seat ventilators (if equipped)



Front seats



Rear seats

334

5-2. Using the air conditioning system and defogger

●

Modes and indicators
The mode can be changed by pressing the switch.

: When automatic mode is selected, the level automatically changes depending on the

air conditioning settings.

■

Seat heaters (without seat ventilators) (if equipped)

Seat heater switches
Level indicator lights

The seat heater temperature level is

displayed.

●

Modes and indicators
The mode changes each time the switch is pressed as follows:

: The mode changes automatically depending on the amount of time that has elapsed.

The amount of time until the mode changes varies depending on the interior tem-
perature when the seat heater was operated and other factors.

Mode

“AUTO” indicator light

Level indicator lights

Off

Automatic*

3 to 1, or off

Off

Mid

Off

Mode

Level indicator lights

Automatic operation

Off





Mid



Mid



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5-2. Using the air conditioning system and defogger

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■

Seat ventilators (without seat heaters) (if equipped)

Seat ventilator switches
Level indicator lights

The seat ventilator fan speed level is

displayed.

●

Modes and indicators
The mode changes each time the switch is pressed as follows:

■

The seat heaters/seat ventilators can be used when

The engine switch is in IGNITION ON mode.

■

Seat heater control (vehicles without automatic mode)

The seat heater automatically changes operations. If the engine switch is turned off while

the seat heater is operating, the starting operation of the heater differs depending on the

amount of time that elapses before it is turned back on.

Mode

Level indicator lights

Off

Mid

Current operation

Starting operation mode and amount of time

elapsed until engine switch in IGNITION ON mode

0 to 15 minutes

Over 15 minutes

Mid

336

5-2. Using the air conditioning system and defogger

■

Automatic operation of the seat heater during Eco drive mode

If the driving mode select switch is switched to Eco drive mode in cold temperatures, the

seat heater may be automatically operated to assist heating performance.

■

Automatic operation during S-FLOW mode

The front seat heater and ventilator or the rear seat heater may automatically turn off

when S-FLOW mode is turned on during automatic mode. (



P. 319)

■

Button lock function (vehicles with rear control panel)

To prevent inadvertent operation, some buttons on the rear armrest can be locked.

(



P. 331)

■

When the switch is disabled (vehicles with rear control panel)

When the rear control panel switch cannot be operated even though the button lock
function is released, check whether the switch is disabled due to selecting

Remote Touch screen. (



P. 325)

■

Rear control panel illumination off function (vehicles with rear control panel)

Control panel illumination on the rear armrest can be turned off. (



P. 331)

■

Customization

The automatic mode settings for the front seat heaters and ventilators or the rear seat

heaters can be changed. (Customizable features: