air conditioning LEXUS LS500H 2019 Owner's Manual

3255-3. Using the air conditioning system and defogger
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Interior features
●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
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, contact
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:
●Turn off eco air conditioning mode
(  P.326)
●Adjust the fan speed
●Turn off Eco drive mode ( P.297)
■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 pe riod of time imme-
diately after the air conditioning system is
started in automatic mode or with the
micro dust and pollen filter on.
●When parking, the system automatically
switches to outside air mode to encour-
age better air circulation throughout the
vehicle, helping to reduce odors that
occur when starting the vehicle.
■Using the voice command system
Air conditioning system can be operated
using voice commands. For details, refer to
the “NAVIGATION AND MULTIMEDIA
SYSTEM OWNER’S MANUAL”.
■Air conditioning filter
 P.408
■Customization
Some functions can be customized.
(  P.479)
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.

3265-3. Using the air conditioning system and defogger
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■Main control screen
Using the touchpad of the Remote
Touch, select the button on the screen.
to and can be adjusted by
performing the following operations.
Flick operation: Move the pointer to
the desired item and flick the touchpad
up or down.
The item can be adjusted by one level.
Trace operation: After selecting the
desired item, trace the pad surface.
The item can be adjusted by the amount
that you trace.
Trace operation cannot be used while driv-
ing.
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 heated steering
wheel/front seat heater /front seat ventila-
tor control screen
: Display the rear seat heater/rear seat
ventilator control screen (if equipped)
: Display the Lexus Climate Con-
cierge 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.
: Set Lexus Climate Concierge
(  P.321)
“AUTO”: Set automatic mode on/off
(  P.330)
“OFF”: Turn the fan off
NOTICE
■To prevent 12-volt battery discharge
Do not leave the air conditioning system
on longer than necessary when the
hybrid system is off.
Air conditioning control screen
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3275-3. Using the air conditioning system and defogger
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“A/C”: Set cooling and dehumidification
function
If the “A/C” display is turned off, the system
will blow ambient temperature airor
heated air.
“DUAL”: Adjust the temperature for driver
and passenger seats separately (“DUAL”
mode) ( P.332)
: Set eco air conditioning mode
Vehicles with 4-ZONE climate con-
trol
Sub menu
Selecting the sub menu item to switch the
main screen. : Display the front air conditioning
control screen
: Display the heated steering
wheel/front seat heater/front seat ventila-
tor control screen
: Display the rear air conditioning con-
trol screen
: Display the rear seat heater/rear seat
ventilator control screen
: Display the Lexus Climate Con-
cierge control screen
: Display the option control screen
Adjust the left side seat tempera-
ture setting Select the right side seat 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
Select the left side seat air flow
mode
Adjust the fan speed 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.
: Set Lexus Climate Concierge
(  P.321)
“AUTO”: Set automatic mode on/off
(  P.330)
“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 airor
heated air.
“4-ZONE”: Adjust the temperature for the
driver, front passenger and left and right
rear passenger se ats separately
(“4-ZONE” mode) ( P.332)
: Set eco air conditioning mode
Adjust the right side seat tempera-
ture setting
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3285-3. Using the air conditioning system and defogger
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■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.
Vehicles with DUAL-ZONE climate
control
Set Lexus Climate Concierge
( P.321)
Adjusting the temperature for
driver and passenger seats sepa-
rately (“DUAL” mode) ( P.332)
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 airor
heated air.
Select the S-FLOW mode
( P.330)
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 4-ZONE climate con-
trol
Set Lexus Climate Concierge
( P.321)
Adjust the temperature for driver,
passenger and rear seats sepa-
rately (“4-ZONE” mode)
( P.332)
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 airor
heated air.
Select the S-FLOW mode
( P.330)
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)
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3295-3. Using the air conditioning system and defogger
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Interior features
■Side display
Vehicles with DUAL-ZONE climate
control Display the front seat heaters/front
seat ventilators control screen
( P.338)
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.332)
Select the air flow mode
Vehicles with 4-ZONE climate con-
trol
Display the front seat heaters/front seat ventilators control screen
(
P.338)
Adjust the left side seat tempera-
ture setting
Adjust the fan speed setting
Adjust the right side seat tempera-
ture setting
Select the left side seat air flow
mode
Set cooling and dehumidification
function on/off
If the “A/C” indicator is turned off, the sys-
tem will blow ambient temperature airor
heated air.
Adjust the temperature for driver,
passenger and rear seats sepa-
rately (“4-ZONE” mode)
( P.332)
Select the right side seat 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.
■Eco air conditioning mode
When Eco drive mode is selected using the
driving mode select switch, eco air condi-
tioning mode turns on.
When a drive mode other than Eco drive
mode is selected, eco air conditioning
mode may turn off.
■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
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3305-3. Using the air conditioning system and defogger
LS500h_OM_(U)_1809off 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/recirculat
ed air mode may not
switch to (recirculated air) mode.
Pollen is filtered even if the micro dust and
pollen filter is turned off.
1 Press the automatic mode switch or
select “AUTO” on the sub function
menu. ( P.326)
2 Press the outside/recirculated air
mode switch to switch to automatic
air intake mode.
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.326)
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.
■Windshield fog detection function
When automatic mode is set, the humidity
sensor detects fog on the windshield and
controls the air condit ioning system to pre-
vent fog.
■Automatic mode for air intake control
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.
In S-FLOW mode, priority for the air-
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 wind shield wiper de-icer
is on.
Using automatic mode
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
S-FLOW mode

3315-3. Using the air conditioning system and defogger
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Interior features
flow 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 condi-
tioning system is stopped.
Operation in S-FLOW mode differs
according to the following conditions:
 Priority is given to the driver’s seat
only when:
Manual S-FLOW mode: When no
passenger is judged to be in the
front passenger seat.
Automatic S-FLOW mode: When
no passengers 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 disabled
when: A passenger is judged to be
in a rear seat when in automatic
S-FLOW mode.
Depending on the set temperature, opera-
tion in S-FLOW mode may not change as
described above.
When certain conditions are met and pri-
ority is given to the driver’s seat only, the
temperature indicator for the front passen-
ger side will turn off.
How the system judges if a passenger is in
the vehicle: P.331
The following S-FLOW modes are
available:
Automatic S-FLOW mode
In this mode, when a passenger is judged to be in a rear seat, S-FLOW
mode will be automatically disabled.
(
P.331)
The indicator will illuminate on the air con-
ditioning control screen when S-FLOW
mode is enabled.
To enable/disable S-FLOW mode and
enter manual S-FLOW mode, select the
S-FLOW mode switch.
How the system judges if a passenger is in
the vehicle: P.331
Manual S-FLOW mode
When the S-FLOW mode switch is
selected, S-FLOW mode will be manu-
ally enabled/ disabled.
The indicator will illuminate on the air con-
ditioning control screen 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.
If the rear air conditioning control screen
on the Rear Multi Operation Panel (if
equipped) is operated , S-FLOW mode will
automatically be disabled
■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 passenger is
judged to be in the front passenger seat
when the system detect s an object on the
front passenger seat, fastening of the
front passenger seat belt, changing of the
set temperature for the front passenger
seat, changing of the air outlets for the
front passenger seat or the opening and
closing of the front passenger door.
(However, when only opening and clos-
ing of the front passenger door is
detected, the system will judge that a pas-
senger is not in the front passenger seat
after the vehicle speed reaches approxi-

3325-3. Using the air conditioning system and defogger
LS500h_OM_(U)_1809mately 12 mph (20 km/h) or more.)
●Rear seats: A passenger is judged to be in
a rear seat when the system detects the
opening and closing of a rear door (auto-
matic S-FLOW mode only) or the opera-
tion of the rear air conditioning control
screen on the Rear Multi Operation
Panel.
■Operation of automatic S-FLOW mode
When the system is operating in automatic
S-FLOW mode, if the system detects the
opening and closing of a rear door or the
operation of the rear air conditioning con-
trol screen on the Rear Multi Operation
Panel, S-FLOW mode will be disabled. To
enable S-FLOW mode, select the S-FLOW
mode switch. (In this case, the system will
operate in manual S-FLOW mode.)
■Changing from manual S-FLOW mode
to automatic S-FLOW mode
1 Select the S-FLOW mode switch to dis-
able S-FLOW mode.
2 Turn the power switch off.
3 After 60 minutes have elapsed, change
the power switch to ON mode.
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.326)
 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 4-ZONE climate con-
trol
To turn on the “4-ZONE” mode, per-
form any of the following procedures:
 Select “4-ZONE” on the sub func-
tion menu. ( P.326)
 Select “4-ZONE” on the option
control screen.
 Adjust a passenger seat tempera-
ture setting.
The indicator on the main control screen
comes on when the “4-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

3335-3. Using the air conditioning system and defogger
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Interior features
■Adjusting the position of and open-
ing and closing the air outlets
Front center/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 center/rear side
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.

3345-3. Using the air conditioning system and defogger
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*:If equipped■Center Display
Using the touchpad of the Remote
Touch, select the button on the screen.
to can be adjusted by perform-
ing the following operations.
Flick operation: Move the pointer to
the desired item and flick the touchpad
up or down.
The item can be adjusted by one level.
Trace operation: After selecting the
desired item, trace the pad surface.
The item can be adjusted by the amount
that you trace.
Trace operation cannot be used while driv-
ing.
Adjust the left side rear seat tem-
perature setting
Select the left side rear seat 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 fan speed set-
Rear automatic air condi-
tioning system*
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 Multi Operation
Panel.
 Center Display
Press the “MENU” button on the
Remote Touch to display the main
menu and move the cursor to to
display the climate control shortcut
buttons. Then, select to display
the rear air conditioning control
screen.
 Rear Multi Operation Panel
*
Touch “Climate” on the home screen
to display the rear air conditioning
control screen.( P.318)
Touching the shortcut button on the
home screen will also display opera-
tion buttons for some of the rear air
conditioning system functions.
*: The Rear Multi Operation Panel can- not be used to operate the rear air
conditioning system if the function is
disabled. ( P.334)
Rear air conditioning control
screen
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