Lexus RX450h L (2022 year). Manual in english - page 18

300

5-3. Using the air conditioning system and defogger

 (outside air mode) modes each 

time the button is pressed.
When the system is switched to automatic 
mode, the air conditioning system operates 
automatically.

■

Defogging the windshield

Defoggers are used to defog the wind-
shield and front side windows.
Press the windshield defogger switch.

Set the outside/recirculated air mode but-
ton to outside air mode if the recirculated 
air mode is used. (It may switch automati-
cally.)
To defog the windshield and the side win-
dows early, turn the air flow and tempera-
ture up.
To return to the previous mode, press the 
windshield defogger switch 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 rear window and outside rear 
view mirror defoggers switch.

The defoggers will automatically turn off 
after a period of time.

■

Windshield wiper de-icer (if 
equipped)



P.305

■

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 consumption.

●

Recirculated air mode is selected as a 

default mode when the power switch is 

turned to ON mode.

●

It is possible to switch to outside air mode 

at any time by pressing the outside/recir-

culated air mode switch.

■

Fogging up of the windows

The windows will easily fog up when the 

humidity in the vehicle is high. Selecting 

“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 recircu-

lated air mode is used.

■

When driving on dusty roads

Close all windows. If dust thrown up by the 

vehicle is still drawn into the vehicle after 

closing the windows, it is recommended 

that the air intake mode be set to outside air 

mode and the fan speed to any setting 

except off.

■

Outside/recirculated air mode

●

Setting to the recirculated air mode tem-

porarily is recommended in preventing 

dirty air from entering the vehicle interior 

and helping to cool the vehicle when the 

outside air temperature is high.

●

Outside/recirculated air mode may auto-

matically switch depending on the tem-

perature setting or the inside 

temperature.

■

Registering air conditioning settings to 

electronic keys (vehicles with driving 

position memory)

●

Unlocking the vehicle using an electronic 

key and turning the power switch to ON 

mode will recall that key’s registered air 

conditioning settings.

●

When the power 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 access system with 

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5-3. Using the air conditioning system and defogger

5

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push-button start is used to unlock a pas-

senger door.

●

The doors that can recall the air condi-

tioning setting when unlocked using the 

smart access system with push-button 
start can be changed.

*

 For details, con-

tact your Lexus dealer.

*

: The doors that can recall the driving 

position memory are changed at the 
same time.

■

Operation of the air conditioning sys-

tem in Eco drive mode

In Eco drive mode, the air conditioning sys-

tem is controlled as follows to prioritize 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 (



P.276)

■

When the outside temperature falls to 

nearly 32°F (0°C)

The dehumidification function may not 

operate even when “A/C” 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 sys-

tem. This may then cause odor to be 

emitted from the vents.

●

To reduce potential odors from occur-

ring:

• It is recommended that the air condition-

ing 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 imme-

diately after the air conditioning system is 

started in automatic mode.

■

Using the voice command system

Air conditioning system can be operated 

using voice commands. For details, refer to 

“NAVIGATION AND MULTIMEDIA 

SYSTEM OWNER’S MANUAL”.

■

Air conditioning filter



P.383

■

Air conditioning system refrigerant

●

A label regarding the refrigerant of the 

air conditioning system is attached to the 

hood at the location shown in the follow-

ing illustration.

●

The meaning of each symbol on the label 

are as follows:

■

Customization

Some functions can be customized. 

(



P.472)

Caution

Air conditioning system

Air conditioning system 
lubricant type

Requires registered tech-
nician to service air condi-
tioning system

Flammable refrigerant

302

5-3. Using the air conditioning system and defogger

■

Main control screen

Using the touchpad of the Remote 
Touch, select the button on the screen.
This system can also be operated by 
the touch screen.



Vehicles with DUAL-ZONE climate 
control

Sub menu

Selecting the sub menu item to switch the 
main screen.

: Display the air conditioning control 

screen

: Display the option control screen

Adjust the left side seat tempera-
ture setting
Adjust the fan speed setting
Select the air flow mode

: Air flows to the upper body

: Air flows to the upper body and feet

: Air flows to the feet

: Air flows to the feet and the wind-

shield defogger operates

Adjust the right side seat tempera-
ture setting
Function on/off indicators

When the function is on, the indicator illu-
minates on the control screen.

Sub function menu

When the sub function button on the 

WARNING

■

To prevent the windshield from fog-

ging up

Do not use the windshield defogger 

switch 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, blocking your vision.

■

When the outside rear view mirror 

defoggers are operating

Do not touch the outside rear view mir-

ror surfaces, as they can become very 

hot and burn you.

NOTICE

■

To prevent 12-volt battery discharge

Do not leave the air conditioning system 

on longer than necessary when the 

hybrid system is off.

■

When repairing/replacing parts of 

the air conditioning system

Have repair/replacement performed by 

your Lexus dealer.

When a part of the air conditioning sys-

tem, such as the evaporator, is to be 

replaced, it must be replaced with a new 

one.

Air conditioning control screen

A

B

C
D

E

F

G

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5-3. Using the air conditioning system and defogger

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Remote Touch is pressed, the following 
functions can be switched on and off.
“AUTO”: Set automatic mode on/off 
(



P.305)

“OFF”: Turn the fan off
“A/C”: Set cooling and dehumidification 
function 
If the “A/C” display is turned off, the system 
will blow ambient temperature air or 
heated air.
“DUAL”: Adjust the temperature for driver 
and passenger seats separately (“DUAL” 
mode) (



P.307)

: Set eco air conditioning mode



Vehicles with 3-ZONE climate con-
trol

Sub menu

Selecting the sub menu item to switch the 
main screen.

: Display the air conditioning control 

screen

: Display the option control screen

Adjust the left side seat tempera-
ture setting
Adjust the fan speed setting
Select the air flow mode

: Air flows to the upper body

: Air flows to the upper body and feet

: Air flows to the feet

: Air flows to the feet and the wind-

shield defogger operates

Adjust the right side seat tempera-
ture setting
Function on/off indicators

When the function is on, the indicator illu-
minates on the control screen.

Sub function menu

When the sub function button on the 
Remote Touch is pressed, the following 
functions can be switched on and off.
“AUTO”: Set automatic mode on/off 
(



P.305)

“OFF”: Turn the fan off
“A/C”: Set cooling and dehumidification 
function 
If the “A/C” display is turned off, the system 
will blow ambient temperature air or 
heated air.
“3-ZONE”: Adjust the temperature for the 
driver, front passenger and rear passenger 
seats separately (“3-ZONE” mode) 
(



P.307)

: Set eco air conditioning mode

■

Option control screen

Select 

 on the sub menu to display 

the option control screen.

The functions can be switched on and off.
When the function is on, the indicator illu-
minates on the screen.

A

B

C
D

E

F

G

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5-3. Using the air conditioning system and defogger



Vehicles with DUAL-ZONE climate 
control

Adjusting the temperature for 
driver and passenger seats sepa-
rately (“DUAL” mode) (



P.307)

Set eco air conditioning mode

Air conditioning and heater output is lim-
ited to prioritize fuel economy.

Cooling and dehumidification func-
tion

If the “A/C” indicator is turned off, the sys-
tem will blow ambient temperature air or 
heated air.

Select the front seat concentrated 
airflow mode (S-FLOW) 
(



P.306)

Prevent ice from building up on the 
windshield and wiper blades 
(Windshield wiper de-icer) (if 
equipped)



Vehicles with 3-ZONE climate con-
trol

Adjust the temperature for driver, 
passenger and rear seats sepa-
rately (“3-ZONE” mode) 
(



P.307)

Set eco air conditioning mode

Air conditioning and heater output is lim-
ited to prioritize fuel economy.

Cooling and dehumidification func-
tion

If the “A/C” indicator is turned off, the sys-
tem will blow ambient temperature air or 
heated air.

Select the front seat concentrated 
airflow mode (S-FLOW) 
(



P.306)

Prevent ice from building up on the 
windshield and wiper blades 
(Windshield wiper de-icer) (if 
equipped)

A

B

C

D

E

A

B

C

D

E

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■

Side display



Vehicles with DUAL-ZONE climate 
control

Adjust the left side seat tempera-
ture setting
Adjust the fan speed setting
Adjust the right side seat tempera-
ture setting
Set cooling and dehumidification 
function on/off
Adjusting the temperature for 
driver and passenger seats sepa-
rately (“DUAL” mode) (



P.307)

Select the air flow mode



Vehicles with 3-ZONE climate con-
trol

Adjust the left side seat tempera-
ture setting
Adjust the fan speed setting

Adjust the right side seat tempera-
ture setting
Set cooling and dehumidification 
function on/off
Adjust the temperature for driver, 
passenger and rear seats sepa-
rately (“3-ZONE” mode) 
(



P.307)

Select the air flow mode

■

Windshield wiper de-icer (if equipped)

This feature is used to prevent ice from 

building up on the windshield and wiper 

blades.
The windshield de-icer will automatically 

turn off after a while.

1

Press the automatic mode switch or 
select “AUTO” on the sub function 
menu. (



P.302)

2

Press the outside/recirculated air 
mode switch to switch to automatic 
air intake mode. (if equipped)

The air conditioning system automatically 

switches between outside air and recircu-

lated air modes.

3

Adjust the temperature setting.

4

To stop the operation, press the off 
switch or select “OFF” on the sub 
function menu. (



P.302)

A

B
C

D

E

F

A

B

WARNING

■

To prevent burns (vehicles with wind-

shield 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.

Using automatic mode

C

D

E

F

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5-3. Using the air conditioning system and defogger

If the fan speed setting or air flow modes 

are operated, the automatic mode indica-

tor goes off. However, automatic mode for 

functions other than that operated is main-

tained.

■

Using automatic mode

Fan speed is adjusted automatically accord-

ing 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 the automatic mode switch is 

pressed or “AUTO” is selected.
Cool air may blow around the upper body 

even when the heater is on due to sunlight.

■

Automatic mode for air intake control (if 

equipped)

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.

This function automatically controls the 
air conditioning airflow so that priority 
is given to the front seats. When the 
front passenger seat is not occupied, 
airflow may switch to only the driver's 
seat. Unnecessary air conditioning is 
suppressed, contributing to increased 
fuel efficiency.
Front seat concentrated airflow mode 
operates in the following situations.



No passengers are detected in the 
rear seats



The windshield defogger is not 
operating

While operating, 

 illuminates.

■

Manually turning front seat con-
centrated airflow mode on/off

In front seat concentrated airflow 
mode, directing airflow to the front 
seats only and to all seats can be 
switched via switch operation. When 
the mode has been switched manually, 
automatic airflow control stops operat-
ing.

NOTICE

■

Humidity sensor

In order to detect fog on the windshield, 

a sensor which monitors the temperature 

of the windshield, the surround humidity, 

etc. is installed.
Follow these points to avoid damaging 

the sensor:

●

Do not disassemble the sensor

●

Do not spray glass cleaner on the sen-

sor or subject it to strong impacts

●

Do not stick anything on the sensor

Front seat concentrated airflow 
mode (S-FLOW)

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Select 

 on the center display 

and switch the airflow.



Indicator illuminated: Airflow to the 
front seats only



Indicator off: Airflow to all the seats

■

Operation of automatic airflow control

●

In order to maintain a comfortable inte-

rior, airflow may be directed to seats 

without passengers immediately after the 

hybrid system is started and at other 

times depending on the outside tempera-

ture.

●

After the hybrid system is started, if pas-

sengers move around inside or enter/exit 

the vehicle, the system cannot accurately 

detect the presence of passengers and 

automatic airflow control will not oper-

ate.

■

Operation of manual airflow control

Even if the function is manually switched to 

directing airflow to only the front seats, 

when a rear seat is occupied, it may auto-

matically direct airflow to all seats.

■

To return to automatic airflow control

1

With the indicator off, turn the power 

switch off.

2

After 60 minutes or more elapse, turn 

the power switch to ON.



Vehicles with DUAL-ZONE climate 
control

To turn on the “DUAL” mode, perform 
any of the following procedures:



Select “DUAL” on the sub function 
menu. (



P.302)



Select “DUAL” on the option con-
trol screen.



Adjust the passenger’s side tem-
perature setting.

The indicator on the main control screen 
comes on when the “DUAL” mode is on.



Vehicles with 3-ZONE climate con-
trol

To turn on the “3-ZONE” mode, per-
form any of the following procedures:



Select “3-ZONE” on the sub func-
tion menu. (



P.302)



Select “3-ZONE” on the option 
control screen.



Adjust a passenger seat tempera-
ture setting.

The indicator on the main control screen 
comes on when the “3-ZONE” mode is on.

■

Location of air outlets

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

Adjusting the temperature for 
the driver and passenger seats 
separately

Air outlet layout and operations

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5-3. Using the air conditioning system and defogger

■

Adjusting the position of and open-
ing and closing the air outlets



Front center

1

Direct air flow to the left or right, up 
or down

2

Turn the knob to open or close the 
vent



Front side

1

Direct air flow to the left or right, up 
or down

2

Turn the knob to open or close the 
vent



Rear

1

Direct air flow to the left or right, up 
or down

2

Turn the knob to open or close the 
vent

WARNING

■

To prevent the windshield defogger 

from operating improperly

Do not place anything on the instrument 

panel which may cover the air outlets. 

Otherwise, air flow may be obstructed, 

preventing the windshield defoggers 

from defogging.

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■

Center Display

Using the touchpad of the Remote 
Touch, select the button on the screen.
This system can also be operated by 
the touch screen.

Adjust the rear seats fan speed set-
ting

Select the rear seats air flow mode

: Air flows to the upper body

: Air flows to the upper body and feet

: Air flows to the feet

Adjust the rear seats temperature 
setting
Function on/off indicators

When the function is on, the indicator illu-
minates on the control screen.

Sub function menu

When the sub function button on the 
Remote Touch is pressed, the following 
functions can be switched on and off.
“Rear off”: Turn the rear seats fan off
“Rear AUTO”: Set the rear seats automatic 
mode on/off (



P.310)

: Disables operation of the rear air 

conditioning system using the Rear air con-
ditioning system control panel

Rear automatic air condi-
tioning system (RX450hL)

The air outlets and fan speed are 
automatically adjusted according 
to the temperature setting.

The rear air conditioning system 
can be operated using the Center 
Display and rear air conditioning 
system control panel.

Press the “MENU” button on the 
Remote Touch to display the main 
menu and move the cursor to 

 

to display the climate control short-
cut buttons. Then, select 

 to dis-

play the rear air conditioning 
control screen.

Rear air conditioning control 
operation

A

B

C

D

E

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5-3. Using the air conditioning system and defogger

■

Rear air conditioning system control panel

Adjust the rear seats fan speed setting

Press 

 to increase the fan speed and 

 to decrease the fan speed.

Press the OFF switch to turn the fan off.

Adjust the rear seats temperature setting

Press 

 to increase the temperature and 

 to decrease the temperature.

Select the air flow mode
OFF switch
AUTO button

When the function is on, the indicator illuminates on the control screen.



Center Display

1

Select “Rear AUTO” on the sub 
function menu. (



P.309)

2

To stop the operation, select “Rear 
off” on the sub function menu. 
(



P.309)

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.



Rear air conditioning system control 
panel

1

Press “AUTO” on the rear air con-
ditioning system control panel.

2

To stop the operation, select “OFF” 
on the rear air conditioning system 
control panel.

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

A

B

C
D

E

Using automatic mode

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than that operated is maintained.

■

Using automatic mode

Fan speed is adjusted automatically accord-

ing 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 “Rear AUTO” is selected or 

“AUTO” is touched.
Cool air may blow around the upper body 

even when the heater is on due to sunlight.

The temperature setting of the rear 
seats can be adjusted using the follow-
ing methods:



When the “3-ZONE” indicator is 
off: Adjust the driver’s seat tempera-
ture.

Adjust the temperature setting of each 
rear seat using the Center Display or rear 
air conditioning system control panel.



Adjust the temperature setting of 
rear seats using the Center Display 
(rear air conditioning control 
screen) or rear air conditioning sys-
tem control panel.

■

Location of air outlets

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

■

Adjusting the position of and open-
ing and closing the air outlets

Adjusting the position of and opening 
and closing the air outlets

1

Direct air flow to the left or right, up 
or down

2

Turn the knob fully to the back of 
the vehicle to close the vent

Adjusting the temperature set-
ting of the rear seats

Air outlets

NOTICE

■

To prevent 12-volt battery discharge

Do not leave the air conditioning system 

on longer than necessary when the 

hybrid system is off.

312

5-3. Using the air conditioning system and defogger

*

: If equipped

Turns the heated steering wheel on/off

The indicator light comes on when the 
heated steering wheel is operating.

■

Operation condition

The power switch is in ON mode.

■

Timer function

The heated steering wheel will automati-

cally turn off after about 30 minutes.

■

Front seats



Vehicles without seat ventilators

Each time the switch is pressed, the 
operation condition changes as fol-
lows.
Hi (3 segments lit)



Mid (2 segments 

lit)



Lo (1 segment lit)



Off

The level indicator (amber) 

 lights up 

during operation.

Heated steering wheel

*

/seat 

heaters

*

/seat ventilators

*



Heated steering wheel

Warms up the grip of the steering 
wheel



Seat heaters

Warm up the seat upholstery



Seat ventilators

Maintain good ventilation using a fan 
built into the seat

WARNING

■

To prevent minor burn injuries

Care should be taken if anyone in the fol-

lowing 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.)

NOTICE

■

To prevent damage to the seat heat-

ers

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 12-volt battery discharge

Do not use the functions when the hybrid 

system is off.

Heated steering wheel

Seat heaters

A

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

Vehicles with seat ventilators

When any switch is pressed, the system 
is set to automatic mode and the 
“AUTO” indicator (green)   lights up.
Each time the switch is pressed, the 
operation condition changes as fol-
lows.
Hi (3 segments lit)



Mid (2 segments 

lit)



Lo (1 segment lit)



Off

The level indicator (amber) 

 lights up 

during operation.

■

Second-row seats

Each time the switch is pressed, the 
operation condition changes as fol-
lows.
Hi (3 segments lit)



Mid (2 segments 

lit)



Lo (1 segment lit)



Off

The level indicator (amber) 

 lights up 

during operation.

■

Operation condition

The power switch is in ON mode.

■

When the air conditioning system is 

operating in front seat concentrated air-

flow mode (S-FLOW)

If a passenger is not detected in the front 

passenger seat, the seat heater of the front 

passenger’s seat will be turned off if on. 

(



P.306)

■

Customization

Some functions can be customized. 

(



P.472)

When any switch is pressed, the system 
is set to automatic mode and the 
“AUTO” indicator (green)   lights up.
Each time the switch is pressed, the 
operation condition changes as fol-
lows.
Hi (3 segments lit)



Mid (2 segments 

A

B

A

WARNING

■

To prevent overheating and minor 

burn injuries

Observe the following precautions when 

using the seat heaters.

●

Do not cover the seat with a blanket or 

cushion when using the seat heater.

●

Do not use seat heater more than nec-

essary.

Seat ventilators (front seats)

A

314

5-3. Using the air conditioning system and defogger

lit)



Lo (1 segment lit)



Off

The level indicator (green) 

 lights up 

during operation.

■

Operation condition

The power switch is in ON mode.

■

When the air conditioning system is 

operating in front seat concentrated air-

flow mode (S-FLOW)

If a passenger is not detected in the front 

passenger seat, the seat ventilator of the 

front passenger’s seat will be turned off if 

on. (



P.306)

■

Customization

Some functions can be customized. 

(



P.472)

B

315

5-4. Using the interior lights

5

Interio

r fe

atures

5-4.Using the interior lights

Outer foot lights
Instrument panel ornament light (if equipped)
Shift lever light
Front interior light (



P.315)

Front personal lights (



P.316)

Door trim ornament lights (if equipped)
Rear interior light (



P.315)

Rear personal lights (



P.316)

Door courtesy lights
Footwell lights
Scuff lights (if equipped)
Front center console light

■

Front interior light

Turns the lights on/off (touch the light)

Interior lights list

Location of the interior lights

A
B
C
D

E
F

G

H

I

J

K

L

Operating the interior lights