automatic LEXUS RX450H 2019 Owners Manual

5166-2. Using the air conditioning system and defogger
RX450h_RX450hL_U
■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

5186-2. Using the air conditioning system and defogger
RX450h_RX450hL_U
■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”.
1
2
3

5196-2. Using the air conditioning system and defogger
RX450h_RX450hL_U
6
Interior features
■When the outside temperature exceeds 75 F (24 C) and the air conditioning system
is on
●In order to reduce the air co nditioning 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/recircu-
lated air mode button.
■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.
■Fogging up of the windows
●The windows will easily fog up when the humidity in the vehicle is high. Selecting “A/C”
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.
■Windshield fog detection function
When automatic mode is set, the humidity sensor ( P. 521) detects fog on the wind-
shield and controls the air cond itioning system to prevent fog.
■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 enteri ng the vehicle interior. During cooling operation, setting the
recirculated air mode will also cool the vehicle interior effectively.
●Outside/recirculated air mode may automa tically switch depending on the tempera-
ture setting or the inside temperature.
■When the outside temperature is low
The dehumidification function may not operate even when “A/C” is selected.
■Operation of the air conditioning system in Eco drive mode
●In the Eco drive mode, the air conditioning sy stem 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

5206-2. Using the air conditioning system and defogger
RX450h_RX450hL_U
■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 dela yed for a short period of time immediately
after the air conditioning system is started in automatic mode.
■Air conditioning filter
P. 625
■Customization
Some functions can be customized ( P. 736)
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.
●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. (if equipped)
●Do not place anything on the instrument
panel which may cover th e air outlets. Other-
wise, air flow may be obstructed, preventing
the windshield defoggers from defogging.

5226-2. Using the air conditioning system and defogger
RX450h_RX450hL_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.
Rear automatic air cond itioning system (RX450hL)
Air outlets and fan speed are automati cally adjusted according to the tem-
perature setting.
Control panel

5246-2. Using the air conditioning system and defogger
RX450h_RX450hL_U
■Using the automatic mode Press the “AUTO” button
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.
■Location of air outlets
The air outlets and air volume
changes according to the selected
air flow mode.
■Adjusting the position of and opening and closing the air outlets
Adjusting the position of and open-
ing and closing the air outlets
Direct air flow to the left or right,
up or down
Turn the knob fully to the back of
the vehicle to close the vent
Air conditioning controls
Air outlets
1
2
3
1
2
NOTICE
■To prevent 12-volt battery discharge
Do not leave the air conditioning system on longer than necessary when the hybrid sys-
tem is off.

5266-2. Using the air conditioning system and defogger
RX450h_RX450hL_U
Turns the heated steering wheel on/off
The indicator light comes on when the
heated steering wheel is operating.
■Operation condition
The heated steering wheel can be used when the power switch is in ON mode.
■Timer
The heated steering wheel will automati cally turn off after about 30 minutes.
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 follows.
Hi (3 segments lit)  Mid (2 segments
lit)  Lo (1 segment lit)  Off
The level indicator (amber) lights up
during operation.
■Operation condition
The front seat heaters can be used when the power switch is in ON mode.
■When the air conditioning system is operating in S-FLOW mode
If a passenger is not detected in the front pa ssenger seat, the seat heater of the front pas-
senger’s seat will be turned off if on. ( P. 514)
■Customization
Some functions can be customized. ( P. 736)
Heated steering wheel
Front seat heaters
Level
indicator
“AUTO”
indicator

5276-2. Using the air conditioning system and defogger
RX450h_RX450hL_U
6
Interior features
Each time the switch is pressed, the
operation condition changes as follows.
Hi (3 segments lit)  Mid (2 segments
lit)  Lo (1 segment lit)  Off
The level indicator (amber) lights up
during operation.
■Operation condition
The rear seat heaters can be used wh en the power switch is in ON mode.
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 follows.
Hi (3 segments lit)  Mid (2 segments
lit)  Lo (1 segment lit)  Off
The level indicator (green) lights up
during operation.
■Operation condition
The seat ventilators can be used when the power switch is in ON mode.
■When the air conditioning system is operating in S-FLOW mode
If a passenger is not detected in the front pa ssenger seat, the seat heater of the front pas-
senger’s seat will be turned off if on. ( P. 514)
■Customization
Some functions can be customized. ( P. 736)
Rear seat heaters
Level indicator
Seat ventilators
Level
indicator
“AUTO”
indicator

5316-3. Using the interior lights
6
Interior features
RX450h_RX450hL_U
●Illuminated entry system: The lights automatically turn on/off according to power switch
mode, the presence of the electronic key, whether the doors are locked/unlocked, and
whether the doors are opened/closed.
●If the interior lights remain on when the power switch is turned off, the lights will go off
automatically after 20 minutes.
●In the following cases, the interior lights and front personal lights may not respond as
normal.
• When water, dirt, etc., have adhered to the lens surface
• When operated with a wet hand
• When wearing gloves, etc.
●Some functions can be customized ( P. 736)
NOTICE
●Never remove the lens for the front interior light and front personal lights. Otherwise,
the lights will be damaged. If the lens need to remove, contact your Lexus dealer.
●To prevent 12-volt battery discharge, do not leave the lights on longer than necessary
when the hybrid system is off.

5486-5. Using the other interior features
RX450h_RX450hL_U
Vehicles with a Lexus Display Audio system
The clock can be adjusted by pressing
the buttons. Pressing and holding will move the
clock hands backward.
Pressing and holding will move the
clock hands forward.
Vehicles with a navigation system
The GPS clock's time is automatically
adjusted by utilizing GPS time informa-
tion.
For details, refer to “NAVIGATION
SYSTEM OWNER’S MANUAL”.
A portable device, such as a smartphone or mobile battery, can be charged by
just placing it on the charging area, prov ided the device is compatible with the Qi
wireless charging standard created by the Wireless Power Consortium.
The wireless charger cannot be used with a portable device that is larger than
the charging area. Additionally, dependin g on the portable device, the wireless
charger may not operate properly. Refer to the operation manual of the portable
device.
■The “Qi” symbol
The “Qi” symbol is a trademark of the Wireless Power Consortium.
Clock
1
2
Wireless charger (if equipped)