2022 LEXUS ES300h air conditioning

2805-3. Using the air conditioning system
QOperation condition
The power switch is in ON mode.
QAir conditioning system-linked control
mode
When the seat ventilator fan speed level is
Hi (when “AUTO” is selected), the seat
ventilator fan speed may become higher
according to the fan speed of the air condi-
tioning system.
QWhen AUTO mode is selected
The following functions may turn off
according to the air conditioning set tem-
perature, outside temperature, etc.
OSeat heaters
OSeat ventilators
QStored settings
When the power switch is turned to ON
mode, the stored settings of the following
functions are recalled.
OSeat heaters
OSeat ventilators
QMain display
Using the touchpad of the Remote
Touch, select the button on the screen.
This system can also be operated by
the touch screen.
Adjust the seat ventilator fan speed
level
The seat ventilator can be adjusted in 3
levels.
When the seat ventilator is operated, the
fan speed level is displayed on the screen.
Adjust the seat heater temperature
level
The seat heater can be adjusted in 3 levels.
When the seat heater is operated, the tem-
perature level is displayed on the screen.
Adjust the heated steering wheel
temperature level
The heated steering wheel can be adjusted
in 2 levels.
When the heated steering wheel is oper-
ated, the temperature level is displayed on
the screen.
Automatic mode on/off indicators
When the automatic mode is on, the indi-
cator illuminates on the screen.
Sub function menu
WARNING
QTo prevent overheating and minor
burn injuries
Observe the following precautions when
using the seat heaters.
ODo not cover the seat with a blanket or
cushion when using the seat heater.
ODo not use seat heater more than nec-
essary.
Control screen
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2815-3. Using the air conditioning system
5
Interior features
When the sub function button on the
Remote Touch is pressed, the following
functions can be set to automatic mode.: Left-hand side seat heater/seat
ventilator
: Heated steering wheel
: Right-hand side seat heater/seat
ventilator
QSide display (12.3-inch display
model)
Display the air conditioning control
screen ( P.274)
Adjust the seat heater temperature
level
Each time the switch is selected, the tem-
perature level and level indicator (orange)
change as follows:
AUTO  Hi  Mid  Lo  Off
Adjust the seat ventilator fan speed
level
Each time the switch is selected, the fan
speed level and level indicator (blue)
change as follows:
AUTO  Hi  Mid  Lo  Off
Adjust the heated steering wheel
temperature level
Each time the switch is selected, the tem-
perature level and level indicator change
as follows: AUTO
 Hi  Lo  Off
QCustomization
Steering wheel heating preference in auto-
matic mode and the automatic mode set-
tings for the seat heaters and ventilators can
be changed. (Customizable features:
 P.421)
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6
6
Maintenance and care
Maintenance and care
6-1. Maintenance and careCleaning and protecting the vehi-cle exterior ................................ 308
Cleaning and protecting the vehi- cle interior ................................... 311
6-2. Maintenance Maintenance requirements ... 314
General maintenance .............. 315
Emission inspection and mainte- nance (I/M) programs .......... 318
6-3. Do-it-yourself maintenance Do-it-yourself service precautions......................................................... 319
Hood................................................ 321
Positioning a floor jack ............. 321
Engine compartment............... 323
12-volt battery............................. 328
Tires ................................................ 330
Tire inflation pressure .............. 338
Wheels........................................... 340
Air conditioning filter............... 342
Cleaning the hybrid battery (trac- tion battery) air intake vent and
filter .............................................. 343
Electronic key battery ............. 347
Checking and replacing fuses ........................................................ 349
Headlight aim............................... 351
Light bulbs .................................... 352

3106-1. Maintenance and care
WARNING
QPrecaution regarding the rear
bumper with Blind Spot Monitor
If the paint of the rear bumper is chipped
or scratched, the system may malfunc-
tion. If this occurs, consult your Lexus
dealer.
NOTICE
QTo prevent paint deterioration and
corrosion on the body and compo-
nents (aluminum wheels etc.)
OWash the vehicle immediately in the
following cases:
• After driving near the sea coast
• After driving on salted roads
• If coal tar, pollen or tree sap is present on the paint surface
• If dead insects, insect droppings or bird droppings are present on the
paint surface
• After driving in an area contaminated with soot, oily smoke, mine dust, iron
powder or chemical substances
• If the vehicle becomes heavily soiled with dust or mud
• If liquids such as benzene and gasoline are spilled on the paint surface
OIf the paint is chipped or scratched,
have it repaired immediately.
OTo prevent the wheels from corroding,
remove any dirt and store in a place
with low humidity when storing the
wheels.
QCleaning the exterior lights
OWash carefully. Do not use organic
substances or scrub with a hard brush.
This may damage the surfaces of the
lights.
ODo not apply wax to the surfaces of the
lights.
Wax may cause damage to the lenses.
QWhen using an automatic car wash
(vehicles with rain-s ensing windshield
wipers)
Set the wiper switch to the off position.
If the wiper switch is in “AUTO”, the wip-
ers may operate and the wiper blades
may be damaged.
QWhen using a high pressure car wash
OWhen washing the vehicle, do not
spray the camera or its surrounding
area directly with a high pressure
washer. Shock applied from high pres-
sure water may cause the device to not
operate normally.
ODo not spray water directly on the
radar which is equipped behind the
emblem. Otherwise it may cause the
device to be damaged.
ODo not bring the nozzle tip close to
boots (rubber or resin manufactured
cover), connectors or the following
parts. The parts may be damaged if
they come into contact with high-pres-
sure water.
• Traction related parts
•Steering parts
• Suspension parts
• Brake parts
OKeep the cleaning nozzle at least 11.9
in. (30 cm) away from the vehicle
body. Otherwise resin section, such as
moldings and bumpers, may be
deformed and damaged. Also, do not
continuously hold the nozzle in the
same place.
ODo not spray the lower part of the
windshield continuously.
If water enters the air conditioning sys-
tem intake located near the lower part
of the windshield, the air conditioning
system may not operate correctly.
ODo not wash the underside of the vehi-
cle using a high pressure car washer.

3206-3. Do-it-yourself maintenance
Light bulbs
( P.352)
• Bulb with same number
and wattage rating as
original
• Flathead screwdriver
Radiator and
condenser
(  P.326)

Tire inflation
pressure
( P.338)• Tire pressure gauge
• Compressed air source
Washer fluid
( P.327)
• Water or washer fluid
containing antifreeze
(for winter use)
• Funnel (used only for adding water or washer
fluid)
WARNING
The engine compartment contains many
mechanisms and fluids that may move
suddenly, become hot, or become elec-
trically energized. To avoid death or seri-
ous injury, observe the following
precautions.
QWhen working on the engine com-
partment
OMake sure that the “IGNITION ON”
on the multi-information display and
the “READY” indicator are both off.
OKeep hands, clothing and tools away
from the moving fan and engine drive
belt.
OBe careful not to touch the engine,
power control unit, radiator, exhaust
manifold, etc. right after driving as they
may be hot. Oil and other fluids may
also be hot.
ODo not leave anything that may burn
easily, such as paper and rags, in the
engine compartment.
ItemsParts and toolsODo not smoke, cause sparks or expose
an open flame to fuel. Fuel fumes are
flammable.
QWhen working near the electric cool-
ing fan or radiator grille
Be sure the power switch is off.
With the power switch in ON mode, the
electric cooling fan may automatically
start to run if the air conditioning is on
and/or the coolant temperature is high.
(  P.326)
QSafety glasses
Wear safety glasses to prevent flying or
falling material, fluid spray, etc. from get-
ting in your eyes.
NOTICE
QIf you remove the air cleaner filter
Driving with the air cleaner filter
removed may cause excessive engine
wear due to dirt in the air.

3426-3. Do-it-yourself maintenance
1Turn the power switch off.
2 Open the glove box.
3 Remove the panel.
4 Unlock the filter cover ( ), pull
the filter cover out of the claws
( ), and remove the filter cover. 5
Remove the filter case.
6 Remove the air cond itioning filter
from the filter case and replace it
with a new one.
The “ UP” marks shown on the filter and
the filter case should be pointing up.
QChecking interval
Inspect and replace the air conditioning fil-
ter according to the maintenance schedule.
In dusty areas or areas with heavy traffic
flow, early replacement may be required.
(For scheduled maintenance information,
please refer to the “Owner’s Manual Sup-
plement” or “Scheduled Maintenance”.)
QIf air flow from the vents decreases dra-
matically
The filter may be clogged. Check the filter
and replace if necessary.
QAir conditioning filter with deodorizing
function
When fragrances are placed in your vehi-
cle, the deodorizing effect may become sig-
nificantly weakened in a short period.
When an air conditioning odor comes out
continuously, replace the air conditioning
Air conditioning filter
The air conditioning filter must be
changed regularly to maintain air
conditioning efficiency.
Removing the air conditioning
filter
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3436-3. Do-it-yourself maintenance
6
Maintenance and care
filter.
Remove the dust from the air intake
vent with a vacuum cleaner, etc.
Make sure to only use a vacuum to suck
out dust and clogs. Attempting to blow out
dust and clogs using an airgun, etc. may
push it into the air intake vent. (P.346)
If dust and clogs cannot be completely
removed with the air intake vent cover
installed, remove the cover and clean
NOTICE
QWhen using the air conditioning sys-
tem
OMake sure that a filter is always
installed.
Using the air conditioning system with-
out a filter may cause damage to the
system.
OThe filter is replaceable.
When cleaning the filter, do not clean
with water or an air gun.
QTo prevent damage to the filter cover
When moving the filter cover in the
direction of arrow to release the fitting,
pay attention not to apply excessive
force to the claws. Otherwise, the claws
may be damaged.
Cleaning the hybrid battery
(traction battery) air intake
vent and filter
To prevent the fuel economy from
being affected, visually inspect the
hybrid battery (traction battery) air
intake vent periodically for dust and
clogs. If it is dusty or clogged or if
“Maintenance required for Trac-
tion battery cooling parts See
owner’s manual” is displayed on the
multi-information display, clean the
air intake vent using the following
procedures:
Cleaning the air intake vent
If dust and clogs cannot be com-
pletely removed

3967-2. Steps to take in an emergency
If the engine coolant temperature
gauge enters the red zone or
“Engine Coolant Temp High Stop in
a Safe Place See Owner’s Manual”
is shown on the multi-information
display
1 Stop the vehicle in a safe place and
turn off the air conditioning system,
and then stop the hybrid system.
2 If you see steam:
Carefully lift the hood after the
steam subsides.
If you do not see steam:
Carefully lift the hood.
3 After the hybrid system has cooled
down sufficiently, inspect the hoses
and cooling system for leaks.
If a large amount of coolant leaks, immedi-
ately contact your Lexus dealer.
Radiator
Cooling fan
4 The coolant level is satisfactory if it
is between the “F” and “L” lines on
the reservoir.
Reservoir
“F” line
“L” line
Coolant inlet cap
5 Add coolant if necessary.
Water can be used in an emergency if
engine coolant is unavailable.
If water was added in an emergency, have
the vehicle inspected at your Lexus dealer
If your vehi cle overheats
The following may indicate that
your vehicle is overheating.
The engine coolant temperature
gauge ( P.76, 80) is in the red
zone or a loss of hybrid system
power is experienced. (For exam-
ple, the vehicle speed does not
increase.)
 “Engine Coolant Temp High Stop
in a Safe Place See Owner’s
Manual” or “Hybrid system over-
heated Output power reduced” is
shown on the multi-information
display.
 Steam comes out from under the
hood.
Correction procedures
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