2021 LEXUS RX450h Owners Manual

3055-3. Using the air conditioning system and defogger
5
Interior features
RX450hL
Left-hand side temperature control switch
Automatic mode switch
Off switch
Fan speed decreases switch
Fan speed increases switch
REAR switch
Right-hand side temp erature control switch
Outside/recirculated air mode switch
Air flow mode switch
Rear window defogger and outside rear view mirror defoggers switch
Windshield defogger switch
■Adjusting the temperature
Press to increase the temperature
and to decrease the temperature.
■Setting the fan speed
Operate the switch to increase the
fan speed and the switch to
decrease the fan speed.
Press the off switch to turn the fan off.
■Changing the air flow mode
 P.308
■Switching between outside air and
recirculated air modes
Type A
Press .
The mode switches between
(recirculated air mode) and (out-
side air mode) modes each time the button
is pressed.
Type B
Press .
The mode switches between
(recirculated air mode), automatic and
A
B
C
D
E
F
G
H
I
J
K

3065-3. 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/recirc ulated 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.311
■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 electr onic key is in the
vicinity or if the smart access system with

3075-3. Using the air conditioning system and defogger
5
Interior features
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 restri ct heating/cooling
capacity
●Fan speed restricted when automatic
mode is selected
To improve air condit ioning performance,
perform the following operations:
●Adjust the fan speed
●Turn off Eco drive mode ( P.281)
■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 or with the
micro dust and pollen filter on.
■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.390
■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.480)
Caution
Air conditioning system
Air conditioning system
lubricant type
Requires registered tech-
nician to service air condi-
tioning system
Flammable refrigerant

3085-3. 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 co nditioning 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/replace ment 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

3095-3. Using the air conditioning system and defogger
5
Interior features
Remote Touch is pressed, the following
functions can be switched on and off.
“AUTO”: Set automatic mode on/off
( P.312)
“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.313)
: 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.312)
“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.313)
: 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

3105-3. Using the air conditioning system and defogger
Vehicles with DUAL-ZONE climate
controlAdjusting the temperature for
driver and passenger seats sepa-
rately (“DUAL” mode) ( P.313)
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.312)
Prevent ice from building up on the
windshield and wiper blades
(Windshield wiper de-icer) (if
equipped)
Removing pollen from the air
(Micro dust and pollen filter)
Vehicles with 3-ZONE climate con-
trol
Adjust the temperature for driver,
passenger and rear seats sepa-
rately (“3-ZONE” mode)
( P.313)
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.312)
Prevent ice from building up on the
windshield and wiper blades
(Windshield wiper de-icer) (if
equipped)
Removing pollen from the air
(Micro dust and pollen filter)
A
B
C
D
E
F
A
B
C
D
E
F

3115-3. Using the air conditioning system and defogger
5
Interior features
■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.313)
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.313)
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.
■Micro dust and pollen filter
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 automatically turn
off after a while.
In order to prevent the windshield from fog-
ging up when the outside air is cold, the
dehumidification function may operate or
the outside/recirculated air mode may not
switch to (recirculated air) mode.
Pollen is filtered even if the micro dust and
pollen filter is turned off.
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.
C
D
E
F

3125-3. Using the air conditioning system and defogger
1Press the automatic mode switch or
select “AUTO” on the sub function
menu. ( P.308)
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.
3Adjust the temperature setting.
4 To stop the operation, press the off
switch or select “OFF” on the sub
function menu. ( P.308)
If the fan speed settin g or air flow modes
are operated, the automatic mode indica-
tor goes off. However, automatic mode for
functions other than th at 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 airflo w 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
 Pollen removal mode is not operat-
ing
Using automatic modeNOTICE
■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)