2023 TOYOTA HIGHLANDER engine overheat

4TABLE OF CONTENTS
Hood ..................................384
Positioning a floor jack ....... 385
Engine compartment .......... 386
Tires ................................... 393
Tire inflation pressure......... 405
Wheels ............................... 407
Air conditioning filter ........... 408
Electronic key battery ......... 410
Checking and replacing fuses ......................................... 412
Headlight aim ..................... 414
Light bulbs .......................... 415
7-1. Essential information Emergency flashers ........... 424
If your vehicle has to be stopped in an emergency .............. 424
If the vehicle is submerged or water on the road is rising......................................... 425
7-2. Steps to take in an emergency If your vehicle needs to be towed......................................... 427
If you think something is wrong ......................................... 429
Fuel pump shut off system ......................................... 430
If a warning light turns on or a warning buzzer sounds .... 431
If a warning message is dis- played .............................. 442
If you have a flat tire ........... 446
If the engine will not start ... 460
If you lose your keys .......... 461
If the fuel filler door cannot be opened ............................. 462
If the electronic key does not operate properly ............... 463
If the vehicle battery is dis- charged ............................ 465If your vehicle overheats ....
469
If the vehicle becomes stuck ......................................... 471
8-1. Specifications Maintenance data (fuel, oil level, etc.) .................................. 474
Fuel information ................. 482
Tire information .................. 484
8-2. Customization Customizable features ....... 494
8-3. Initialization Items to initialize ................ 507
9-1. For owners Reporting safety defects for U.S. owners ............................. 510
Reporting safety defects for Canadian owners ............. 510
Seat belt instructions for Cana- dian owners (in French) ... 511
SRS airbag instructions for Canadian owners (in French)......................................... 512
Headlight aim instructions for Canadian owners (in French)......................................... 519
What to do if... (Troubleshooting) ........ ................................. 522
Alphab

etical Index.............. 525
7When trouble arises
8Vehicle specifications
9For owners
Index

13Pictorial index
Precautions for winter season.............................................. P.314
To prevent freezing (windshiel d wiper de-icer) ..................... P.324
Precautions for car wash
*.................................................... P.371
Fuel filler door ............................................... ..................... P.221
Refueling method ............................................... .................. P.221
Fuel type/fuel tan k capacity ................................... .............. P.475
Tires.......................................................... ........................... P.393
Tire size/inflation pressure ................................... ........ P.393, 479
Winter tires/tire chains ....................................... .................. P.314
Checking/rotation/tire pressur e warning system ..................P.393
Coping with flat tires......................................... .................... P.446
Hood ........................................................... ......................... P.384
Opening ............................................................................... P.384
Engine oil ..................................................... ........................ P.476
Coping with overheating ...................................................... P.469
Warning messages ............................................... ............... P.442
Front turn signal lights/parking lights
*..................... P.204,210
Parking lights
*............................................................... ..... P.210
Headlights/daytime running lights
*.................................. P.210
Headlights..................................................... ...................... P.210
Daytime running lights .. .................................................... P.210
Front side marker lights ....................................... ............. P.210
Parking lights
*/daytime running lights*........................... P.210
Front fog lights
*............................................................... ... P.216
Stop/tail lights ............................................... ..................... P.210
Tail lights.................................................... ......................... P.210
Back-up lights
Shifting the shift lever to R ................................................... P.201
Light bulbs of the exterior lights for driving
(Replacing method: P.415, Watts: P.481)

802-1. Instrument cluster
■The meters and display illumi-
nate when
The engine switch is in ON.
■Outside temperature display
●In the following si tuations, the cor-
rect outside tempe rature may not
be displayed, 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.)
●When “--” or “E” is displayed, the
system may be malfunctioning.
Take your vehicle to your Toyota
dealer.
■Liquid crystal display
Small spots or light spots may
appear on the display. This phenom-
enon is characteristi c of liquid crys-
tal displays, and there is no problem
continuing to use the display.
■Customization
The meters can be customized on of the multi-information display.
(  P.94)
■Display items
 Odometer
Displays the total distance the vehi-
cle 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
WARNING
■The information display at
low temperatures
Allow the interior of the vehicle to
warm up before u sing the liquid
crystal informat ion display. At
extremely low temperatures, 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 number appearing
on the display. This lag could
cause the driver to downshift
again, causing rapid and exces-
sive engine braking and possibly
an accident resulting in death or
injury.
NOTICE
■To prevent damage to the
engine and its components
●Do not let the indicator needle
of the tachometer enter the red
zone, which indicates the maxi-
mum engine speed.
●The engine may be overheating
if the engine coolant tempera-
ture gauge is in the red zone
(H). In this case, immediately
stop the vehicle in a safe place,
and check the engine after it
has cooled completely.
(  P.469)
Odometer and trip meter
display

852-1. Instrument cluster
2
Vehicle status information and indicators
Take your vehicle to your Toyota
dealer.
■Liquid crystal display
Small spots or light spots may
appear on the display. This phenom-
enon is characteristi c of liquid crys-
tal displays, and there is no problem
continuing to use the display.
■Free/Open Source Software
Information
This product contains Free/Open
Source Software (FOSS). The
license information and/or the
source code of such FOSS can be
found at the following URL.
https://www.denso.com/global/en/
opensource/meter/toyota/
■Customization
The gauges and meters can be cus-
tomized in of the multi-informa-
tion display. ( P.494)
■Changing the display
Each time the “ODO TRIP”
switch is pressed, the displayed
item will be changed. When the
trip meter is displayed, pressing
and holding the switch will reset
the trip meter.
■Display items
 Odometer
Displays the total distance the vehi-
cle has been driven.
 Trip meter A/Trip meter B
Displays the distance the vehicle
WARNING
■The information display at
low temperatures
Allow the interior of the vehicle to
warm up before u sing the liquid
crystal informat ion display. At
extremely low temperatures, 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 number appearing
on the display. This lag could
cause the driver to downshift
again, causing rapid and exces-
sive engine braking and possibly
an accident resulting in death or
injury.
NOTICE
■To prevent damage to the
engine and its components
●Do not let the indicator needle
of the tachometer enter the red
zone, which indicates the maxi-
mum engine speed.
●The engine may be overheating
if the engine coolant tempera-
ture gauge is in the red zone
(H). In this case, immediately
stop the vehicle in a safe place,
and check the engine after it
has cooled completely.
(  P.469)
Odometer and trip meter
display

1764-1. Before driving
registration laws and confirm the
availability of the correct fuel.
( P.475)
■Eco-friendly driving
 P.89, 100
WARNING
Observe the following precau-
tions.
Failure to do so m ay result in
death or serious injury.
■When starting the vehicle
Always keep your foot on the
brake pedal while stopped with
the engine running. This prevents
the vehicle from creeping.
■When driving the vehicle
●Do not drive if y ou are unfamil-
iar with the location of the brake
and accelerator pedals to avoid
depressing the wrong pedal.
• Accidentally depressing the accelerator pedal instead of the
brake pedal will result in sudden
acceleration that may lead to an
accident.
• When backing up, you may twist your body around, leading to a
difficulty in operating the pedals.
Make sure to operate the pedals
properly.
• Make sure to keep a correct driving posture even when mov-
ing the vehicle only slightly. This
allows you to depress the brake
and accelerator pedals properly.
• Depress the brake pedal using your right foot. Depressing the
brake pedal using your left foot
may delay respon se in an emer-
gency, resulting in an accident.
●Do not drive the vehicle over or
stop the vehicle near flammable
materials.
The exhaust system and
exhaust gases can be
extremely hot. These hot parts
may cause a fire i f there is any
flammable material nearby.
●During normal driving, do not
turn off the engine. Turning the
engine off while driving will not
cause loss of steering or brak-
ing control, but the power assist
to these systems will be lost.
This will make it more difficult to
steer and brake, so you should
pull over and stop the vehicle as
soon as it is safe to do so.How-
ever, in the event of an emer-
gency, such as if it becomes
impossible to stop the vehicle in
the normal way:
P.424
●Use engine braking (downshift)
to maintain a safe speed when
driving down a steep hill.Using
the brakes continuously may
cause the brakes to overheat
and lose effectiveness.
(
P.201)
●Do not adjust the positions of
the steering wheel, the seat, or
the inside or outside rear view
mirrors while driving.Doing so
may result in a loss of vehicle
control.
●Always check that all passen-
gers’ arms, heads or other parts
of their body are not outside the
vehicle.
●AWD models: This is not an
AWD vehicle designed for
off-road driving. Drive with due
care if it becomes unavoidable
to drive off-road.

1784-1. Before driving
WARNING
■If you hear a squealing or
scraping noise (brake pad
wear limit indicators)
Have the brake pads checked and
replaced by your Toyota dealer as
soon as possible.Rotor damage
may result if th e 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.
■When the vehicle is stopped
●Do not race the engine.If the
shift lever is in any position
other than P or N, the vehicle
may accelerate suddenly and
unexpectedly, causing an acci-
dent.
●In order to prev ent accidents
due to the vehicle rolling away,
always keep depressing the
brake pedal while the engine is
running, and apply the parking
brake as necessary.
●If the vehicle is stopped on an
incline, in order to prevent acci-
dents caused by the vehicle roll-
ing forward or backward, always
depress the brake pedal and
securely apply the parking
brake as needed.
●Avoid 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.
■When the vehicle is parked
●Do not leave glasses, cigarette
lighters, 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 plastic 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 cir-
cuit in the vehicle’s electrical
components.
●Do 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 se at is adjusted,
causing a fire.
●Do 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.
●Do not leave a door or window
open if the curved glass is
coated with a metallized film
such as a silver-colored one.
Reflected sunlight may cause
the glass to act a s a lens, caus-
ing a fire.

1794-1. Before driving
4
Driving
WARNING
●Always apply the parking brake,
shift the shift lever to P, stop the
engine and lock the vehicle.Do
not leave the vehicle unat-
tended while the engine is run-
ning.If the vehicle is parked with
the shift lever in P but the park-
ing brake is not set, the vehicle
may start to move, possibly
leading to an accident.
●Do not touch the exhaust pipes
while the engine is running or
immediately after turning the
engine off.Doing so may cause
burns.
■When taking a nap in the vehi-
cle
Always turn the engine off. Other-
wise, if you accidentally move the
shift lever or dep ress the acceler-
ator pedal, this could cause an
accident or fire due to engine
overheating. Additionally, if the
vehicle is parked in a poorly venti-
lated area, exhaust gases may
collect and enter the vehicle, lead-
ing to death or a serious health
hazard.
■When braking
●When the brakes a re wet, drive
more cautiously.Braking dis-
tance increases when the
brakes are wet, and this may
cause one side of the vehicle to
brake differently than the other
side. Also, the parking brake
may not securely hold the vehi-
cle.
●If the brake booster device does
not operate, do not follow other
vehicles closely and avoid hills
or sharp turns t hat require brak-
ing.In this case, braking is still
possible, but the brake pedal
should be depressed more
firmly than usual. Also, the brak-
ing distance will increase. Have
your brakes fixed immediately.
●Do not pump the brake pedal if
the engine stalls.Each push on
the brake pedal uses up the
reserve for the power-assisted
brakes.
●The brake system consists of 2
individual hydraulic systems; if
one of the systems fails, the
other will still operate. In this
case, the brake pedal should be
depressed more firmly than
usual and the braking distance
will increase. Have your brakes
fixed immediately.
■If the vehicle becomes stuck
(AWD models)
Do not spin the wheels exces-
sively when any of the tires is up
in the air, or the vehicle is stuck in
sand, mud, etc. This may damage
the driveline components or pro-
pel the vehicle forward or back-
ward, causing an accident.
NOTICE
■When driving the vehicle
●Do not depress the accelerator
and brake pedals at the same
time during driving, as this may
restrain the engine output.
●Do not use the accelerator
pedal or depress the accelera-
tor and brake pedals at the
same time to hold the vehicle on
a hill.

1944-1. Before driving
requires practice. Grip the
bottom of the steering wheel
and move your hand to the
left to move the trailer to the
left. Move your hand to the
right to move the trailer to
right. (This is generally oppo-
site to reversing without a
trailer attached.) Avoid sharp
or prolonged turning. Have
someone guide you when
reversing to reduce the risk of
an accident.
 As stopping distance is
increased when towing a
trailer, vehicle-to vehicle dis-
tance should be increased.
For each 10 mph (16 km/h) of
speed, allow at least one
vehicle and trailer length.
 Avoid sudden braking as you
may skid, resulting in the
trailer jackknifing and a loss of
vehicle control. This is espe-
cially true on wet or slippery
surfaces.
 Avoid jerky starts or sudden
acceleration.
 Avoid jerky steering and
sharp turns, and slow down
before making turn.
 Note that when making a turn,
the trailer wheels will be
closer than the vehicle wheels
to the inside of the turn. Com-
pensate by making a wider
than normal turning radius.
 Slow down before making a turn, in cross winds, on wet or
slippery surfaces, etc.
Increasing vehicle speed can
destabilize the trailer.
 Take care when passing other
vehicles. Passing requires
considerable distance. After
passing a vehicle, do not for-
get the length of your trailer,
and be sure you have plenty
of room before changing
lanes.
 To maintain engine braking
efficiency and charging sys-
tem performance when using
engine braking, do not put the
transmission in D. If in the M
mode, the transmission shift
range position must be in 6 or
lower. ( P.201)
 Instability happens more fre-
quently when descending
steep or long downhill grades.
Before descending, slow
down and downshift. Do not
make sudden downshifts
while descending steep or
long downhill grades.
 Avoid holding the brake pedal
down too long or applying the
brakes too frequently. This
could cause the brakes to
overheat and result in
reduced braking efficiency.
 Due to the added load of the
trailer, your vehicle’s engine
may overheat on hot days (at
temperatures over 85°F
[30°C]) when driving up a long