2019 LEXUS RX350 Owners Manual

504 6-2. Using the air conditio ning system and defogger
RX350/RX350L_U ■
Adjusting the temperature setting
Press to increase the temperature and to decrease the tem-
perature. ■
Adjusting the fan speed setting
Press to increase the fan speed and to decrease the fan speed.
Press the “OFF” button to turn the fan off.

5056-2. Using the air conditioning system and defogger
6
Interior features
RX350/RX350L_U ■
Change the airflow mode
To change the air outlets, press .
The air outlets used are switched each time the button is pressed.
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 windshield defogger operates.■
Other functions ●
Switching between outside air and recirculated air modes (  P. 513)●
Defogging the windshield (  P. 513)●
Defogging the rear window and outside rear view mirrors (  P. 513)
Vehicles with a Lexus Display
Audio system 
Vehicles with a navigation system
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506 6-2. Using the air conditio ning system and defogger
RX350/RX350L_U 
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. 516)
Select to set cooling and dehumidifi-
cation function on/off If the indicator is turned off, the system will blow ambi ent temperature air
or heated air.
Display the option control screen (  P. 507)
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. 507)
Select to set automatic mode on/off
Select to set cooling and de humidification function on/offIf the indicator is turned off, the system will blow ambient temperature air
or heated air.
Select to set eco mode on/off (  P. 516)Control screen (RX350) 1
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5076-2. Using the air conditioning system and defogger
6
Interior features
RX350/RX350L_U ■
Option control screen
Select on the air conditioning control screen to display the option
control screen. The functions can be switched on and off.
Prevent ice from building up on the windshield and wiper blades (if
equipped) (  P. 513)
Select to set S-FLOW mode (  P. 511)■
Side display operation screen (Vehicle s with a navigation system [12.3-inch
display])
Select the air flow mode
Adjust the left-hand side tem-
perature setting
Adjust the fan speed setting
Adjust the right-hand side tem-
perature setting
Select to set auto mode on/off
Select to set cooling and dehu-
midification function on/off If the indicator is turned off, the system will blow ambient temperature air
or heated air. 
Lexus Display Audio screen 
Navigation system screen
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508 6-2. Using the air conditio ning system and defogger
RX350/RX350L_U 
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. 516)
Select to set cooling and dehumidifi-
cation function on/off If the indicator is turned off, the system will blow ambi ent temperature air
or heated air.
Adjust the temperature for driver, passe nger and rear seats separately (“3-
ZONE” mode) (  P. 510)
Display the rear air condit ioning control screen (  P. 512)
Display the option control screen (  P. 509)
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. 509)
Select to set automatic mode on/off
Select to set cooling and de humidification function on/offIf 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. 510)
Select to set eco mode on/off (  P. 516)
Display the rear air condit ioning control screen (  P. 512)Control screen (RX350L) 1
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10
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5096-2. Using the air conditioning system and defogger
6
Interior features
RX350/RX350L_U ■
Option control screen
Select on the air conditioning control screen to display the option
control screen. The functions can be switched on and off.
Prevent ice from building up on the windshield and wiper blades (if
equipped) (  P. 513)
Select to set S-FLOW mode (  P. 511)■
Side display operation screen (Vehicle s with a navigation system [12.3-inch
display])
Select the air flow mode
Adjust the left-hand side tem-
perature setting
Adjust the fan speed setting
Adjust the right-hand side tem-
perature setting
Select to set auto mode on/off
Select to set cooling and dehu-
midification function on/off If the indicator is turned off, the system will blow ambient temperature air
or heated air.
Adjust the temperature for driver, passenger and rear seats separately (“3-
ZONE” mode) (  P. 510)
Lexus Display Audio screen 
Navigation system screen
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7

510 6-2. Using the air conditio ning system and defogger
RX350/RX350L_U ■
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) (RX350)
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) (RX350L)
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 1
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5116-2. Using the air conditioning system and defogger
6
Interior features
RX350/RX350L_U ■
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. (RX350L)
Operation in S-FLOW mode differs acco rding 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. 515
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. 515
Manual S-FLOW mode
When is selected, S-FLOW mode will be manually enabled/disabled.The indicator will illuminate wh en 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 system (RX350L), change to automatic S-
FLOW mode. (  P. 515)