engine overheat LEXUS ES300h 2022 Owners Manual

4TABLE OF CONTENTS
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 fil-
ter..................................................... 343
Electronic key battery ................ 347
Checking and replacing fuses 349
Headlight aim.................................. 351
Light bulbs ....................................... 352
7-1. Essential information Emergency flashers..................... 358
If your vehicle has to be stopped in an emergency ............................. 358
If the vehicle is submerged or water on the road is rising .................. 359
7-2. Steps to take in an emergency If your vehicle needs to be towed............................................................ 361
If you think something is wrong ........................................................... 362
If a warning light turns on or a warn- ing buzzer sounds ..................... 364If a warning message is displayed
.......................................................... 374
If you have a flat tire .................... 379
If the hybrid system will not start .......................................................... 386
If you lose your keys.................... 388
If the fuel filler door cannot be opened .......................................... 388
If the electronic key does not oper- ate properly ................................. 389
If the 12-volt battery is discharged ........................................................... 391
If your vehicle overheats ........... 396
If the vehicle becomes stuck ... 399
8-1. Specifications Maintenance data (fuel, oil level, etc.) ................................................. 402
Fuel information............................. 410
Tire information .............................. 412
8-2. Customization Customizable features ................ 421
8-3. Items to initialize Items to initialize ........................... 433
9-1. For owners Reporting safety defects for U.S. owners ........................................... 436
Reporting safety defects for Cana- dian owners ................................. 436
Seat belt instructions for Canadian owners (in French) ................... 437
7When trouble arises
8Vehicle specifications
9For owners

13Pictorial index
Precautions against winter season ............................................................................ P.262
To prevent freezing (windshield wiper de-icer)
*................................................. P.275
Precautions against car wash
*....................................................................................P.309
Fuel filler door .......................................................................................................... P.174
Refueling method ............................................................................................................... P.174
Fuel type/fuel tank capacity .........................................................................................P.403
Tires.......................................................................................................................... . P.330
Tire size/inflation pressure ........................................................................................... P.407
Winter tires/tire chain .................................................................................................... P.26 0
Checking/rotation/tire pressure warning system..............................................P.330
Coping with flat tires........................................................................................................ P .379
Hood ........................................................................................................................... P.321
Opening .................................................................................................................................P.321
Engine oil .............................................................................................................................. P.404
Coping with overheating............................................................................................... P.396
Warning messages .......................................................................................................... P.374
Headlights/side marker lights/cornering lights............................................ P.163
Turn signal lights ......................................................................................................P.158
Parking lights/daytime running lights............................................................... P.163
Tail/stop lights .......................................................................................................... P.163
License plate lights ................................................................................................. P.163
Back up lights
Shifting the shift lever to R ........... ................................................................................... P.15 5
*: If equipped
Light bulbs of the exterior lights for driving
(Replacing method: P.352, Watts: P.409)
E
F
G
H
I
J
K
L

782-1. Instrument cluster
5Continue to hold the “ODO TRIP”
switch for approximately 5 seconds,
and then release it once the odometer
begins flashing.
Updating is complete once the odometer
flashes for approximately 5 seconds and
then the display returns to normal.
QOutside temperature display
OIn the following situations, the correct
outside temperature may not be dis-
played, or the display may take longer
than normal to change:
• When stopped, or driving at low speeds (less than 12 mph [20 km/h])
• When the outside temperature has changed suddenly (at the entrance/exit
of a garage, tunnel, etc.)
OWhen “--” or “E” is displayed, the system
may be malfunctioning. Take your vehicle
to your Lexus dealer.
QLiquid crystal display
 P.86
QCustomization
The gauges and meters can be customized
on of the multi-information display.
(  P.89)
QDisplay items
 Odometer
Displays the total distance the vehicle has
been driven.
Trip meter A/trip meter B
Displays the distance the vehicle has been
driven since the meter was last reset. Trip
meters A and B can be used to record and
display different distances independently.
Distance until next engine oil
change
Displays the distance the vehicle can be
driven until an oil change is necessary.
QChanging the display
Each time the “ODO TRIP” switch is
pressed, the displayed item will be
changed. When the trip meter is dis-
played, pressing and holding the switch
will reset the trip meter.
WARNING
QThe information display at low tem-
peratures
Allow the interior of the vehicle to warm
up before using the liquid crystal infor-
mation display. At extremely low tem-
peratures, the information display
monitor may respond slowly, and display
changes may be delayed.
For example, there is a lag between the
driver’s shifting and the new gear num-
ber appearing on the display. This lag
could cause the driver to downshift
again, causing rapid and excessive
engine braking and possibly an accident
resulting in death or injury.
NOTICE
QTo prevent damage to the engine and
its components
ODo not let the indicator needle of the
tachometer enter the red zone, which
indicates the maximum engine speed.
OThe engine may be overheating if the
engine coolant temperature gauge is
in the red zone (H). In this case, imme-
diately stop the vehicle in a safe place,
and check the engine after it has
cooled completely. ( P.396)
Odometer and trip meter dis-
play

842-1. Instrument cluster
QCustomization
The gauges and meters can be customized
on of the multi-information display.
(  P.89)
QDisplay items
 Odometer
Displays the total distance the vehicle has
been driven.
Trip meter A/trip meter B
Displays the distance the vehicle has been
driven since the meter was last reset. Trip
meters A and B can be used to record and
display different distances independently.
Distance until next engine oil
change
Displays the distance the vehicle can be
driven until an oil change is necessary.
QChanging the display
Each time the “ODO TRIP” switch is
pressed, the displayed item will be
changed. When the trip meter is dis-
played, pressing and holding the switch
will reset the trip meter.
QPop-up display
Distance until the next engine oil
change will be displayed when a warn-
ing message indicating that oil mainte-
nance should be performed soon or is
required is displayed.
The brightness of the instrument panel
lights can be adjusted.
WARNING
QThe information display at low tem-
peratures
Allow the interior of the vehicle to warm
up before using the liquid crystal infor-
mation display. At extremely low tem-
peratures, the information display
monitor may respond slowly, and display
changes may be delayed.
For example, there is a lag between the
driver’s shifting and the new gear num-
ber appearing on the display. This lag
could cause the driver to downshift
again, causing rapid and excessive
engine braking and possibly an accident
resulting in death or injury.
NOTICE
QTo prevent damage to the engine and
its components
ODo not let the indicator needle of the
tachometer enter the red zone, which
indicates the maximum engine speed.
OThe engine may be overheating if the
engine coolant temperature gauge is
in the red zone (H). In this case, imme-
diately stop the vehicle in a safe place,
and check the engine after it has
cooled completely. ( P.396)
Odometer and trip meter dis-
playChanging the instrument panel
light brightness

1404-1. Before driving
WARNING
ODuring normal driving, do not turn off
the hybrid system. Turning the hybrid
system off while driving will not cause
loss of steering or braking control,
however, power assist to the steering
will be lost. This will make it more diffi-
cult to steer smoothly, so you should
pull over and stop the vehicle as soon
as it is safe to do so.
In the event of an emergency, such as
if it becomes impossible to stop the
vehicle in the normal way: P.358
OUse engine braking (downshift) to
maintain a safe sp eed when driving
down a steep hill.
Using the brakes continuously may
cause the brakes to overheat and lose
effectiveness. ( P.154)
ODo not adjust the positions of the
steering wheel, the seat, or the inside
or outside rear view mirrors while driv-
ing.
Doing so may result in a loss of vehicle
control.
OAlways check that all passengers’
arms, heads or other parts of their
body are not outside the vehicle.
ODo not drive in excess of the speed
limit. Even if the legal speed limit per-
mits it, do not drive over 85 mph (140
km/h) unless your vehicle has high-
speed capability tires. Driving over 85
mph (140 km/h) may result in tire fail-
ure, loss of control and possible injury.
Be sure to consult a tire dealer to
determine whether the tires on your
vehicle are high-speed capability tires
or not before driving at such speeds.
QWhen driving on slippery road sur-
faces
OSudden braking, acceleration and
steering may cause tire slippage and
reduce your ability to control the vehi-
cle.
OSudden acceleration, engine braking
due to shifting, or changes in engine
speed could cause the vehicle to skid,
resulting in an accident.
OAfter driving through a puddle, lightly
depress the brake pedal to make sure
that the brakes are functioning prop-
erly. Wet brake pads may prevent the
brakes from functioning properly. If
the brakes on only one side are wet
and not functioning properly, steering
control may be affected.
QWhen shifting the shift lever
ODo not let the vehicle roll backward
while the shift lever is in a driving posi-
tion, or roll forward while the shift lever
is in R.
Doing so may result in an accident or
damage to the vehicle.
ODo not shift the shift lever to P while
the vehicle is moving.
Doing so can damage the transmission
and may result in a loss of vehicle con-
trol.
ODo not shift the shift lever to R while
the vehicle is moving forward.
Doing so can damage the transmission
and may result in a loss of vehicle con-
trol.
ODo not shift the shift lever to a driving
position while the vehicle is moving
backward.
Doing so can damage the transmission
and may result in a loss of vehicle con-
trol.
OShifting the shift lever to N while the
vehicle is moving will disengage the
hybrid system. Engine braking is not
available when N is selected.
OBe careful not to shift the shift lever
with the accelerator pedal depressed.
Shifting the shift lever to a gear other
than P or N may lead to unexpected
rapid acceleration of the vehicle that
may cause an accident and result in
death or serious injury.

1414-1. Before driving
4
Driving
WARNING
QIf you hear a squealing or scraping
noise (brake pad wear limit indica-
tors)
Have the brake pads checked and
replaced by your Lexus dealer as soon as
possible. Rotor damage may result if the
pads are not replaced when needed. It is
dangerous to drive the vehicle when the
wear limits of the brake pads and/or
those of the brake discs are exceeded.
QWhen the vehicle is stopped
ODo not depress the accelerator pedal
unnecessarily.
If the shift lever is in any position other
than P or N, the vehicle may acceler-
ate suddenly and unexpectedly, caus-
ing an accident.
OIn order to prevent accidents due to
the vehicle rolling away, always keep
depressing the brake pedal while
stopped with the “READY” indicator is
illuminated, and apply the parking
brake as necessary.
OIf the vehicle is stopped on an incline,
in order to prevent accidents caused
by the vehicle rolling forward or back-
ward, always depress the brake pedal
and securely apply the parking brake
as needed.
OAvoid revving or racing the engine.
Running the engine at high speed
while the vehicle is stopped may cause
the exhaust system to overheat, which
could result in a fire if combustible
material is nearby.
QWhen the vehicle is parked
ODo not leave glasses, cigarette light-
ers, spray cans, or soft drink cans in the
vehicle when it is in the sun.
Doing so may result in the following:
• Gas may leak from a cigarette lighter or spray can, and may lead to a fire.
• The temperature inside the vehicle may cause the plastic lenses and plas-
tic material of glasses to deform or
crack.
• Soft drink cans may fracture, causing the contents to spray over the interior
of the vehicle, and may also cause a
short circuit in the vehicle’s electrical
components.
ODo not leave cigarette lighters in the
vehicle. If a cigarette lighter is in a
place such as the glove box or on the
floor, it may be lit accidentally when
luggage is loaded or the seat is
adjusted, causing a fire.
ODo not attach adhesive discs to the
windshield or windows. Do not place
containers such as air fresheners on
the instrument panel or dashboard.
Adhesive discs or containers may act
as lenses, causing a fire in the vehicle.
ODo not leave a door or window open if
the curved glass is coated with a met-
allized film such as a silver-colored
one. Reflected sunlight may cause the
glass to act as a lens, causing a fire.
OAlways apply the parking brake, shift
the shift lever to P, stop the hybrid sys-
tem and lock the vehicle.
Do not leave the vehicle unattended
while the “READY” indicator is illumi-
nated.
If the vehicle is parked with the shift
lever in P but the parking brake is not
set, the vehicle may start to move, pos-
sibly leading to an accident.
ODo not touch the exhaust pipes while
the “READY” indicator is illuminated
or immediately after turning the hybrid
system off.
Doing so may cause burns.

1424-1. Before driving
WARNING
QWhen taking a nap in the vehicle
Always turn the hybrid system off. Oth-
erwise, if you accidentally move the shift
lever or depress the accelerator pedal,
this could cause an accident or fire due
to hybrid system overheating. Addition-
ally, if the vehicle is parked in a poorly
ventilated area, exhaust gases may col-
lect and enter the vehicle, leading to
death or a serious health hazard.
QWhen braking
OWhen the brakes are wet, drive more
cautiously.
Braking distance increases when the
brakes are wet, and this may cause
one side of the vehicle to brake differ-
ently than the other side. Also, the
parking brake may not securely hold
the vehicle.
OIf the electronically controlled brake
system does not operate, do not follow
other vehicles closely and avoid hills or
sharp turns that require braking.
In this case, braking is still possible, but
the brake pedal should be depressed
more firmly than usual. Also, the brak-
ing distance will in crease. Have your
brakes fixed immediately.
OThe brake system consists of 2 or
more individual hydraulic systems; if
one of the systems fails, the other(s)
will still operate. In this case, the brake
pedal should be depressed more
firmly than usual and the braking dis-
tance will increase. Have your brakes
fixed immediately.
NOTICE
QWhen driving the vehicle
ODo not depress the accelerator and
brake pedals at the same time while
driving, as this may restrain the hybrid
system output.
ODo not use the accelerator pedal or
depress the accelerator and brake
pedals at the same time to hold the
vehicle on a hill.
QAvoiding damage to vehicle parts
ODo not turn the steering wheel fully in
either direction and hold it there for an
extended period of time.
Doing so may damage the power
steering motor.
OWhen driving over bumps in the road,
drive as slowly as possible to avoid
damaging the wheels, underside of the
vehicle, etc.
QIf you get a flat tire while driving
A flat or damaged tire may cause the fol-
lowing situations. Hold the steering
wheel firmly and gradually depress the
brake pedal to slow down the vehicle.
OIt may be difficult to control your vehi-
cle.
OThe vehicle will make abnormal
sounds or vibrations.
OThe vehicle will lean abnormally.
Information on what to do in case of a flat
tire ( P.379)
QWhen encountering flooded roads
Do not drive on a road that has flooded
after heavy rain etc. Doing so may cause
the following serious damage to the vehi-
cle:
OEngine stalling
OShort in electrical components
OEngine damage caused by water
immersion
In the event that you drive on a flooded
road and the vehicle is flooded, be sure
to have your Lexus dealer check the fol-
lowing:
OBrake function

3767-2. Steps to take in an emergency
*: A buzzer sounds the first time a message is shown on the multi-information display.
In some situations, the master warning light and warning buzzer may not oper-
ate as specified. In this case, follow the instructions displayed in the warning
message.
 If a warning light comes on or flashes at the same time that a warning message is
displayed, take corrective action according to the warning light. ( P.364)
QWarning messages
The warning messages explained below
may differ from the actual messages
according to operation conditions and vehi-
cle specifications.
QWarning buzzer
In some cases, the buzzer may not be heard
due to being in a noisy location or audio
sound.
QIf “Engine Oil Level Low Add or
Replace” is displayed
The engine oil level is low. Check the level
of the engine oil, and add if necessary.
This message may appear if the vehicle is
stopped on a slope. Move the vehicle to a
level surface and check to see if the mes-
sage disappears.
QIf “Hybrid System Stopped Steering
Power Low” is displayed
This message is displayed if the hybrid sys-
tem is stopped while driving.
When steering wheel operations are
heavier than usual, grip the steering wheel
firmly and operate it using more force than
usual.
QIf “Hybrid system overheated Output
power reduced” is displayed
This message may be displayed when driv-
ing under severe operating conditions. (For
example, when driving up a long steep hill.)
Handling method:  P.396
QIf “Traction Battery Needs to be Pro-
tected Refrain From the Use of N Posi-
tion” is displayed
This message may be displayed when the
shift lever is in N.
As the hybrid battery (traction battery) can
not be charged when the shift lever is in N,
shift the shift lever to P when the vehicle is
stopped.
QIf “Traction Battery Needs to be Pro-
tected Shift into P to Restart” is dis-
played
This message is displayed when the hybrid
battery (traction battery) charge has
become extremely low because the shift
lever has been left in N for a certain amount
of time.
When operating the vehicle, shift to P and
restart the hybrid system.
QIf “Shift to P Before Exiting Vehicle” is
displayed
Message is displayed when the driver’s
door is opened without turning the power
Comes onDoes not sound
Indicates a condition, such as malfunction of electri-
cal components, their cond ition, or indicates the
need for maintenance
FlashesDoes not sound
Indicates a situation, such as when an operation has
been performed incorrectly, or indicates how to
perform an operation correctly
Warning buzzer*Warning

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
A
B
A
B
C
D

452Alphabetical index
C
Card key .......................................................... 100
Care ......................................................... 308, 311Aluminum wheels ..................................... 308
Exterior .......................................................... 308
Interior ................................................................ 311
Seat belts........................................................... 311
Cargo capacity...............................................146
Cargo hooks ................................................. 288
Center Display ............................................. 266
Chains ................................................................261
Child-protectors............................................107
Child restraint system................................... 43 Fixed with a LATCH system ..................50
Fixed with a seat belt....................................47
Front passenger occupant classification system ..............................................................37
Points to remember .................................... 43
Riding with children ..................................... 43
Types of child restraint system installation method ........................................................... 44
Using an anchor bracket .......................... 53
Child safety ....................................................... 43 12-volt battery precautions .......329, 394
Airbag precautions...................................... 33
Child restraint system................................. 44
Heated steering wheel and seat heater precautions................................................ 278
How your child should wear the seat belt ............................................................................ 25
Moon roof precautions ............................135
Power window lock switch..................... 132
Power window precautions ................... 132
Rear door child-protectors ....................107
Seat belt extender precautions ............. 25
Seat belt precautions .................................. 43
Trunk precautions ...................................... 108
Cleaning ................................................. 308, 311 Aluminum wheels ..................................... 308
Exterior .......................................................... 308
Interior ................................................................ 311 Radar sensor ........................................177, 215
Seat belts ........................................................... 311
Clock ............................................... 76, 80, 289
Coat hooks..................................................... 297
Compass ......................................................... 303
Condenser ..................................................... 326
Console box .................................................. 286
Console box light ........................................ 286
Cooling system............................................. 325 Engine overheating.................................. 396
Hybrid system overheating .................. 397
Cornering lights .............................................165 Replacing light bulbs................................352
Cruise control Dynamic radar cruise control with full-speed range ..............................................204
Cup holder ..................................................... 286
Current fuel consumption .......................... 87
Curtain shield airbags .................................. 28
Customizable features ................................421
Custom mode .................................................219
D
Daytime running light system ...................163
Defogger Outside rear view mirrors....................... 271
Rear window .................................................. 271
Windshield ...................................................... 271
Dimension ...................................................... 402
Dinghy towing................................................. 147
Display BSM (Blind Spot Monitor)......................214
Dynamic radar cruise control with full-speed range ..............................................204
Energy monitor ..............................................95
Head-up display..............................................91
Intuitive parking assist .............................. 222
LTA (Lane-Tracing Assist) .....................197
Multi-information display ..........................85
Parking Support Brake function (rear pedestrians)................................................ 251
RCD (Rear Camera Detection) ........236