2019 LEXUS RX450H automatic

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Interior features
RX450h
RX450hL
Front automatic air conditioning system
Air outlets and fan speed are automati cally adjusted according to the tem-
perature setting.
Vehicles with a Lexus Display Audio sy stem: Press the “MENU” button on the
Lexus Display Audio controller, then sele ct “Climate” to display the air condi-
tioning control screen.
For details on the Lexus Display Audio controller, refer to “Lexus Display
Audio controller” on P. 402.
Vehicles with a navigation system: Press the “MENU” button on the Remote
Touch, then select to display th e air conditioning control screen.
Vehicles with a navigation system (12.3 -inch display): The air conditioning sys-
tem can be displayed and operat ed on the side display. (P. 505)
For details on the Remote Touch, refer to the “NAVIGATION SYSTEM
OWNER’S MANUAL”.
Control panel

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Lexus Display Audio screen
Adjust the left-hand side tempera-
ture setting
Adjust the fan speed setting
Select to set auto mode on/off
Select to set eco mode on/off
( P. 519)
Select to set cooling and dehumidifi-
cation function on/off
If the indicator is turned off, the system will blow ambient temperature air
or heated air.
Display the option control screen ( P. 510)
Select the air flow mode
Adjust the right-hand side temperature setting
Navigation system screen
Adjust the left-hand side tempera-
ture setting
Adjust the fan speed setting
Select the air flow mode
Adjust the right-hand side tempera-
ture setting
Display the option control screen
( P. 510)
Select to set automatic mode on/off
Select to set cooling and dehumidification function on/off
If the indicator is turned off, the system will blow ambient temperature air
or heated air.
Select to set eco mode on/off ( P. 519)
Control screen (RX450h)
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Interior features
Lexus Display Audio screen
Adjust the left-hand side tempera-
ture setting
Adjust the fan speed setting
Select to set auto mode on/off
Select to set eco mode on/off
( P. 519)
Select to set cooling and dehumidifi-
cation function on/off
If the indicator is turned off, the system will blow ambient temperature air
or heated air.
Adjust the temperature for driver, passe nger and rear seats separately (“3-
ZONE” mode) ( P. 513)
Display the rear air condit ioning control screen (P. 515)
Display the option control screen ( P. 512)
Select the air flow mode
Adjust the right-hand side temperature setting
Navigation system screen
Adjust the left-hand side tempera-
ture setting
Adjust the fan speed setting
Select the air flow mode
Adjust the right-hand side tempera-
ture setting
Display the option control screen
( P. 512)
Select to set automatic mode on/off
Select to set cooling and dehumidification function on/off
If the indicator is turned off, the system will blow ambient temperature air
or heated air.
Adjust the temperature for driver, passe nger and rear seats separately (“3-
ZONE” mode) ( P. 513)
Select to set eco mode on/off ( P. 519)
Display the rear air condit ioning control screen (P. 515)
Control screen (RX450hL)
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Interior features
■Using the automatic mode Press the “AUTO” button or select “A UTO” on the air conditioning control
screen.
Press to switch to automatic air intake mode. (if equipped)
The air conditioning system automati cally switches between outside air
and recirculated air modes.
Adjust the temperature setting.
To stop the operation, press the “OFF” button.
■Automatic mode indicator
If the fan speed setting or air flow modes are operated, the automatic mode
indicator goes off. However, automati c mode for functions other than that
operated is maintained.
■Adjusting the temperature for driv er and passenger seats separately
(“DUAL” mode) (RX450h)
To turn on the “DUAL” mode, perfor m any of the following procedures:
●Press “DUAL” button.
●Adjust the temperature setting of th e passenger side with the passenger
side temperature adjustment button.
The indicator comes on when the “DUAL” mode is on.
■Adjusting the temperature for driver, passenger and rear seats separately
(“3-ZONE” mode) (RX450hL)
To turn on the “3-ZONE” mode, perf orm any of the following procedures:
●Select “3-ZONE” on the air conditioning control screen.
●Select “3-ZONE” on the side displa y operation screen. (Vehicles with a
navigation system [12.3-inch display])
●Adjust the temperature setting of th e passenger side with the passenger
side temperature adjustment button.
The indicator comes on when the “3-ZONE” mode is on.
Air conditioning controls
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■S-FLOW mode
In S-FLOW mode, priority for the airflo w is given to the front seats, reducing
the airflow and air conditioning effect on the rear seats. When in S-FLOW
mode, airflow from the rear air condit ioning system is stopped. (RX450hL)
Operation in S-FLOW mode differs according to the following conditions: • Priority is given to the driver’s se at only when: Manual S-FLOW mode:
When no passenger is judged to be in the front passenger seat.
Automatic S-FLOW mode: When no passeng ers are judged to be in the front
passenger seat or rear seats. • Priority is given to the front seats when: Manual S-FLOW mode is selected
or no passengers are judged to be in the rear seats when in automatic S-
FLOW mode.
• S-FLOW mode will be disa bled when: A passenger is judged to be in a rear
seat when in automatic S-FLOW mode.
Depending on the set temperature, operation in S-FLOW mode may not
change as described above.
When certain conditions are met and priori ty is given to the driver’s seat only,
the temperature indicator for the fr ont passenger side will turn off.
How the system judges if a passenger is in the vehicle: P. 518
The following S-FLOW modes are available:
Automatic S-FLOW mode
In this mode, when a passenger is judg ed to be in a rear seat, S-FLOW mode
will be automatically disabled.
The indicator will illuminate wh en S-FLOW mode is enabled.
To enable/disable S-FLOW mode and enter manual S-FLOW mode, select
on the option control screen.
How the system judges if a passenger is in the vehicle:  P. 518
Manual S-FLOW mode
When is selected, S-FLOW mode will be manually enabled/disabled.
The indicator will illuminate when S-FLOW mode is enabled.
In manual S-FLOW mode, as the system does not judge if a passenger is in a rear
seat, S-FLOW mode will not be disabled automatically.
To disable S-FLOW mode automatically by opening and closing a rear door or
operating the rear air conditioning syst em (RX450hL), change to automatic S-
FLOW mode. ( P. 518)

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Interior features
Press the “REAR” button or select on the air conditioning control screen
to display the rear air conditioning control screen.
Adjust the temperature setting
Adjust the fan speed setting
Select to set auto mode on/off
Turn the fan off
■Using the automatic modeSelect the “REAR AUTO”.
Adjust the temperature setting.
To stop the operation, select “REAR OFF”.
■Automatic mode indicator
If the fan speed setting or air flow modes are operated, the automatic mode
indicator goes off. However, automati c mode for functions other than that
operated is maintained.
Changing the rear seat settings (RX450hL)
Lexus Display Audio screenNavigation system screen
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■Switching between outside air and recirculated air modes
Type A
Press .
The mode switches between (recirculated air mode) and (outside
air mode) modes each time the button is pressed.
Type B
Press .
The mode switches between (recir culated 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 wi ndshield 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 wind ows 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 a period of time.
■Windshield wiper de-icer (if equipped)
This feature is used to prevent ice fr om building up on the windshield and
wiper blades.
Select on the option control screen.
When the windshield wiper de-icer is on , is displayed on the air condition-
ing control screen.
The windshield wiper de-icer will automati cally turn off after a period of time.
Other functions

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■Registering air conditioning settings to electronic keys
●Unlocking the vehicle using an electronic key and turning the power switch to ON
mode will recall that ke y’s registered air conditioning settings.
●When the power switch is turned off, the cu rrent air conditioning settings will automati-
cally be registered to the electronic key that was used to unlock the vehicle.
●The system may not operate correctly if more th an one electronic key is in the vicinity or
if the smart access system with push-button start is used to unlock a passenger door.
●The doors that can recall the air conditioning setting when unlocked using the smart
access system with push-button start can be changed.
* For details, contact your Lexus
dealer.
*: The doors that can recall the driving positi on memory are changed at the same time.
■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 wa rm or cool air is ready to flow immediately
after the “AUTO” button is pressed or “AUTO” is selected.
■How the system judges if a passenger is in the vehicle when in S-FLOW mode
In S-FLOW mode, the system judges if a passenger is in the vehicle as follows:
• Front passenger seat: A passeng er is judged to be in the front passenger seat when the
system detects an object on the front passenger seat, fastening of the front passenger
seat belt, changing of the set temperature for the front passenger seat or the opening
and closing of the front passenger door. (However, when only opening and closing of
the front passenger door is detected, the sy stem will judge that a passenger is not in
the front passenger seat after the vehicl e speed reaches approximately 12 mph (20
km/h) or more.)
• Rear seats (automatic S-FLOW mode only): A passenger is judged to be in a rear seat
when the system detects the opening and closin g of a rear door or the operation of the
rear air conditioning system (RX450hL).
If a passenger is judged to be in the vehicl e, the system will retain the judgement for a
certain amount of time after th e power switch is turned off.
■Operation of automatic S-FLOW mode
When the system is operating in automati c S-FLOW mode, if the system detects the
opening and closing of a rear door or the op eration of the rear air conditioning system
(RX450hL), S-FLOW mode will be disabled. To enable S-FLOW mode, select
on the option control screen. (In this case , the system will operate in manual S-FLOW
mode.)
■Changing from manual S-FLOW mode to automatic S-FLOW mode
Select on the option control screen to disable S-FLOW mode.
Turn the power switch off.
Wait for 60 minutes or more and change the power switch to ON mode.
■Using the voice command system
Air conditioning system can be operated using voice commands. For details, refer to the
“NAVIGATION SYSTEM OWNER’S MANUAL”.
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