warning lights TOYOTA HIGHLANDER 2023 Owner's Guide

4136-3. Do-it-yourself maintenance
6
Maintenance and care
Normal fuse
Blown fuse
Type BNormal fuse
Blown fuse
Type CNormal fuse
Blown fuse
■After a fuse is replaced
●If the lights do n ot turn on even
after the fuse has been replaced,
a bulb may need replacement.
(  P.415)
●If the replaced fuse blows again,
have the vehicle inspected by
your Toyota dealer.
■If there is an overload in a cir-
cuit
The fuses are designed to blow, pro-
tecting the wiring harness from
damage.
■When replacing light bulbs
Toyota recommends that you use
genuine Toyota pr oducts designed
for this vehicle. Because certain
bulbs are connected to circuits
designed to prevent overload,
non-genuine parts or parts not
designed for this vehicle may be
unusable.
WARNING
■To prevent system break-
downs and vehicle fire
Observe the following precau-
tions.
Failure to do so may cause dam-
age to the vehicle, and possibly a
fire or injury.
●Never use a fuse of a higher
amperage rating than that indi-
cated, or use any other object in
place of a fuse.
●Always use a genuine Toyota
fuse or equivalent.
Never replace a fuse with a
wire, even as a temporary fix.
●Do not modify the fuses or fuse
boxes.
NOTICE
■Before replacing fuses
Have the cause of electrical over-
load determined and repaired by
your Toyota dealer as soon as
possible.

4216-3. Do-it-yourself maintenance
6
Maintenance and care
3Remove the light bulb.
4 Install a new light bulb.
5 Install the lens.
Hooks
1 Fit the lens into either the right or left hooks.
2 Push the lens into place.
After installation, confirm that the
lens is properly installed by gently
pulling it.
6Install the cover.
WARNING
■To prevent injury
Before performin g any light bulb
replacement procedure, be sure
to turn the engine switch off. Fail-
ure to do so may result in burns
from hot components or a part of
your body may get caught on an
operating component, possibly
causing serious injury.
■Replacing light bulbs
●Turn off the lights. Do not
attempt to replace the bulb
immediately after turning off the
lights.The bulbs become very
hot and may cause burns.

4226-3. Do-it-yourself maintenance
WARNING
●Do not touch the glass portion
of the light bulb with bare
hands. When it is unavoidable
to hold the glass portion, use
and hold with a clean dry cloth
to avoid getting moisture and
oils on the bulb. Also, if the bulb
is scratched or dropped, it may
blow out or crack.
●Fully install light bulbs and any
parts used to secure them. Fail-
ure to do so may result in heat
damage, fire, or water entering
the light unit. This may damage
the lights or cause condensa-
tion to build up on the lens.
●Do not attempt t o repair or dis-
assemble light bulbs, connec-
tors, electric circuits or
component parts.
Doing so may result in death or
serious injury due to electric
shock.
■To prevent damage or fire
●Make sure bulbs are fully
seated and locked.
●Check the wattage of the bulb
before installing to prevent heat
damage.

4317-2. Steps to take in an emergency
7
When trouble arises
■Brake system warning light
■Brake system warning light
■High coolant temperature warning light* (warning buzzer)
*: This light illuminat es on the multi-information display.
If a war ning light tur ns on or a war ning buzzer
sounds
Calmly perform the following actions if any of the warning
lights comes on or flashes. If a light comes on or flashes, but
then goes off, this does not necessarily indicate a malfunction
in the system. However, if this continues to occur, have the
vehicle inspected by your Toyota dealer.
Actions to the warning lights or warning buzzers
Warning lightDetails/Actions
(U.S.A.)
or
(red)
(Canada)
Indicates that:
 The brake fluid level is low; or
 The brake system is malfunctioning
 Immediately stop the vehicle in a safe place and con-
tact your Toyota dealer. Continuing to drive the vehi-
cle may be dangerous.
Warning lightDetails/Actions
(yellow)
Indicates a malfunction in the electric parking brake
 Have the vehicle inspected by your Toyota dealer
immediately.
Warning lightDetails/Actions
Indicates that the engine coolant temperature is too high
Immediately stop the vehicle in a safe place.
Handling method ( P.469)

4407-2. Steps to take in an emergency
goes flat, the tire pressure warning
light will not turn off even though the
flat tire has been replaced with the
spare tire. Replace the spare tire
with the repaired tire and adjust the
tire inflation pressure. The tire pres-
sure warning light will go off after a
few minutes.
Vehicles with a full- size spare tire:
The spare tire is also equipped with
a tire pressure warning valve and
transmitter. The tire pressure warn-
ing light will turn on if the tire infla-
tion pressure of the spare tire is low.
If a tire goes flat, the tire pressure
warning light will not turn off even
though the flat tire has been
replaced with the spare tire.
Replace the spare tire with the
repaired tire and adjust the tire infla-
tion pressure. The tire pressure
warning light will go off after a few
minutes.
■Conditions that the tire pres-
sure warning system may not
function properly
 P. 3 9 7
WARNING
■If both the ABS and the brake
system warning lights remain
on
Stop your vehicle in a safe place
immediately and contact your Toy-
ota dealer.
The vehicle will become
extremely unstable during brak-
ing, and the ABS system may fail,
which could cause an accident
resulting in death or serious injury.
■When the electric power
steering system warning light
comes on
When the light comes on yellow,
the assist to the power steering is
restricted. When the light comes
on red, the assis t to the power
steering is lost and handling oper-
ations of the steering wheel
become extremely heavy.
When steering wheel operations
are heavier than usual, grip the
steering wheel firmly and operate
it using more fo rce than usual.
■If the tire pressure warning
light comes on
Be sure to observe the following
precautions.
Failure to do so could cause a
loss of vehicle control and result
in death or serious injury.
●Stop your vehicle in a safe place
as soon as possible. Adjust the
tire inflation pressure immedi-
ately.
●Vehicles with a compact spare
tire: If the tire pressure warning
light comes on even after tire
inflation pressure adjustment, it
is probable that you have a flat
tire. Check the tires. If a tire is
flat, change it with the spare tire
and have the flat tire repaired by
the nearest Toyota dealer.
●Avoid abrupt maneuvering and
braking.
If the vehicle tires deteriorate,
you could lose control of the
steering wheel or the brakes.
■If a blowout or sudden air
leakage should occur
The tire pressure warning system
may not activate immediately.

4437-2. Steps to take in an emergency
7
When trouble arises
The warning lights and warning buzzers operate as follows depend-
ing on the content of the message. If a message indicates the need
for inspection by a dealer, have the vehicle inspected by your To y o t a
dealer immediately.
*: A buzzer sounds the first time a message is shown on the multi-informa-
tion display.
■Warning messages
The warning messages explained
below may differ from the actual
messages according to operation
conditions and vehicle specifica-
tions.
■Warning buzzer
In some cases, the buzzer may not
be heard due to being in a noisy
location or audio sound.
■If “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 l evel surface and
check to see if the message disap-
pears.
Messages and warnings
Warning lightWarning
buzzer
*Warning
-Sounds
 Indicates an important situation, such as
when a system relate d to driving is mal-
functioning or that danger may result if
the correction procedure is not per-
formed
 Indicates a situation, such as when dam-
age to the vehicle or danger may result
Comes on or
flashesSounds
Indicates an importan t situation, such as
when the systems shown on the
multi-information display may be malfunc-
tioning
-Does not sound
 Indicates a condition, such as malfunc-
tion of electrical components, their condi-
tion, or indicates the need for
maintenance
 Indicates a situatio n, such as when an
operation has been performed incor-
rectly, or indicates how to perform an
operation correctly

526Alphabetical Index
AWD Control ............................. 91
B
Back door ................................ 119
Back-up lightsReplacing light bulbs ............ 415
Battery Battery checking................... 391
If the battery is discharged ... 465
Preparing and c hecking before
winter.................................. 314
Replacing ............................. 467
Warning light ........................ 432
Blind Spot Monitor (BSM) ...... 270
Brake Brake hold ............................ 208
Fluid ............................. 390, 479
Parking brake ....................... 205
Warning light ........................ 431
Brake assist ............................ 307
Break-in tips ........ ................... 175
Brightness control Instrument panel light control81, 86
BSM (Blind Spot Monitor) ...... 270
Buzzer Hands off steering wheel warn-ing (LTA) ............................. 248
C
Care Exterior ................................. 370
Interior .................................. 373
Seat belts ............................. 373
Wheels and wheel ornaments........................................... 370
Cargo capacity ....................... 184
Cargo net hooks .. ................... 344
Chains ..................................... 315
Child restraint system Fixed with a LATCH system ... 60 Fixed with a seat belt..............55
Front passenger occupant clas-
sification system ...................43
Points to remember ................50
Riding with children ................49
Types of child restraint system installation method ...............52
Using an anchor bracket ........62
Child safety Airbag precautions .................39
Back door precautions.......... 119
Battery precautions ......392, 468
Child restraint system .............52
Heated steering wheel and seat heater precautio ns..............335
How your child should wear the seat belt ................................28
Moon roof precautions..........166
Panoramic moon roof precau- tions ....................................170
Power window lock switch ....164
Power window precautions...163
Rear door child-protectors .... 118
Seat belt extender precautions .............................................29
Seat belt precautions..............49
Child-protectors...................... 118
Cleaning Exterior .................................370
Interior ..................................373
Radar sensor ........................224
Seat belts .............................373
Wheels and wheel ornaments...........................................370
Clock ................... .....79, 81, 82, 86
Coat hooks ..............................357
Condenser ............. ..................390
Console box ............................341
Consumption screen ..............108
Conversation mirror ...............359
Cooling system .......................389 Engine overheating ..............469

527Alphabetical Index
Cruise controlDynamic radar cruise control with full-speed range .......... 249
Cup holders ............................ 341
Current fuel consumption . 88, 99
Curtain shield airbags ............. 34
Customizable features ........... 494
D
Daytime running light system210 Replacing light bulbs ............ 415
Defogger Outside rear view mirrors ..... 324
Rear window ........................ 324
Windshield............................ 324
Differential Rear differential oil ............... 478
Digital Rearview Mirror .......... 150
Dimension ............................... 474
Dinghy towing ........................ 196
Display Dynamic radar cruise control with full-speed range .......... 249
Head-up display ................... 103
Intuitive parking assist .......... 275
LTA (Lane Tracing Assist) ..... 245
Multi-information display .. 87, 96
RCTA .................................... 283
Warning message ................ 442
Distance until next engine oil change..................................... 80
Do-it-yourself maintenance ... 377
Door courtesy lights .............. 337
Door lock Back door ............................. 119
Side doors ............................ 115
Smart key system................. 131
Wireless remote control ....... 113
Doors Automatic door locking and unlocking system................ 118
Back door ............................. 119 Door glasses ........................162
Door lock .............................. 119
Open door warning buzzer . 116,
11 8
Outside rear view mirrors .....160
Rear door child-protectors .... 118
Downhill assist control system ...............................................305
Drive distance ...........................91
Drive information ......................91
Driver’s seat position memory Driving position memory .......142
Memory recall function .........144
Driving Break-in tips .........................175
Correct driving posture ...........25
Driving mode select switch ...300
Procedures ...........................174
Winter drive tips....................314
Driving information display .....88
Driving mode select switch ...300
Driving position memory .......142 Memory recall function .........144
Driving range ................88, 89, 99
Driving support system informa- tion display................90, 98, 100
Dynamic radar cruise control with full-speed range............249Warning message.................259
Dynamic Torque Control AWD system ...................................308
Dynamic Torque Vectoring AWD system ...................................308
E
Eco drive mode .......................300
Eco Driving Indicator .......89, 106
Eco Driving Indicator Light......89
EDR (Event data recorder) .........7
Elapsed time .............................91

529Alphabetical Index
FluidAutomatic transmission ........ 478
Brake .................................... 479
Washer ................................. 392
Fog lights Switch................................... 216
Footwell light .................... ...... 337
Front passenger occupant clas- sification system .................... 43
Front seats Adjustment ........................... 136
Cleaning ............................... 373
Correct driving posture ........... 25
Driving position memory....... 142
Head restraints ..................... 145
Memory recall function ......... 144
Seat heaters ......................... 335
Seat position memory .......... 142
Seat ventilators .................... 335
Front side marker light Light switch .......................... 210
Front side marker lights Replacing light bulbs ............ 415
Front turn signal lights Replacing light bulbs ............ 415
Turn signal lever ................... 204
Fuel Capacity ............................... 475
Fuel gauge ....................... 79, 82
Fuel pump shut off system ... 430
Information ........................... 482
Refueling .............................. 221
Type ..................................... 475
Warning light ........................ 434
Fuel consumption Average fuel economy ..... 88, 99
Current fuel consumption . 88, 99
Fuel economy ......... ............ 88, 99
Fuel filler door If the fuel filler door cannot be opened ............................... 462
Refueling .............................. 221 Fuel gauge...........................79, 82
Fuel pump shut off system ....430
Fuses .......................................412
G
Garage door opene
r ...............360
Gauges ................................79, 82
Glove box ................................341
Glove box light........................341
H
Head restraints .......................145
Headlight aim ..........................414
Headlights Adaptive Front-lighting System (AFS) ..................................212
Automatic High Beam system ...........................................213
Light switch...........................210
Replacing light bulbs ............415
Head-up display ......................103 Driving information display area...........................................103
Eco Driving Indicator ............106
Navigation system-linked display ...........................................106
Settings ................................104
Heated steering wheel............335
Heaters Automatic air conditioning sys-tem .....................................322
Heated steering wheel..........335
Outside rear view mirrors .....324
Rear automatic air conditioning system ................................331
Seat heaters ....... ..................335
High mounted stoplight Replacing light bulbs ............415
Hill-start assist control...........307
Hood Open.....................................384

530Alphabetical Index
HooksCargo net hooks ................... 344
Coat hooks ........................... 357
Retaining hooks (floor mat) .... 24
Horn ......................................... 148
I
I/M test ..................................... 380
Identification Engine .................................. 475
Vehicle.................................. 474
Ignition switch (engine switch) ............................................... 197Auto power off function ........ 200
Changing the engine switch modes ................................ 199
If your vehicle has to be stopped in an emergency................. 424
Indicators .................................. 76
Initialization Items to initialize................... 507
Maintenance................. 377, 388
Power windows .................... 162
Tire pressure warning system........................................... 399
Inside rear view mirror... 149, 150
Instrument panel li ght control81,
86
Interior lights .......................... 337 Front interior light ................. 337
Rear interior light .................. 337
Intuitive parking assist Function ............................... 275
Warning message ................ 277
J
JackPositioning a floor jack ......... 385
Vehicle-equipped jack .......... 447
Jack handle ............................. 447 Jam protection function
Electronic roof sunshade ......169
Moon roof .............................165
Panoramic moon r oof ...........169
Power back door ..................125
Power windows ....................162
K
Keyless entry Smart key system .................131
Wireless remote control........ 113
Keys Battery-saving function .........132
Electronic key ....................... 112
Engine switch .......................197
If the electronic key does not operate properly .................463
If you lose your keys.............461
Key number plate ................. 112
Keyless entry ........ 115, 121, 131
Mechanical key..................... 112
Replacing the battery ...........410
Warning buzzer ....................132
Wireless remote control........ 113
Knee airbags .............................34
L
Lane Tracing Assist (LTA) Operation..............................239
Warning messages ...............249
Language (multi-information dis- play) .................................92, 102
LATCH anchors.........................60
Lever Auxiliary catch lever .............384
Hood lock release lever ........384
Shift lever .............................201
Turn signal lever ...................204
Wiper lever ...................216, 219
License plate lights Light switch...........................210