2023 TOYOTA HIGHLANDER HYBRID stop start

4857-2. Steps to take in an emergency
7
When trouble arises
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 radia-
tor core (radiator) for any
leaks.
Radiator
Cooling fan
If a large amount of coolant leaks,
immediately cont act your Toyota
dealer.
4 The coolant level is satisfac-
tory if it is between the
“FULL” and “LOW” lines on
the reservoir.
Reservoir
“FULL” line
“LOW” line Radiator cap
5 Add coolant if necessary.
Water can be used in an emer-
gency if coolant is unavailable.
6Start the hybrid system and
turn the air conditioning sys-
tem on to check that the radi-
ator cooling fan operates and
to check for coolant leaks
from the radiator or hoses.
The fan operates when the air con-
ditioning system is turned on imme-
diately after a cold start. Confirm
that the fan is operating by check-
ing the fan sound and air flow. If it is
difficult to check these, turn the air
conditioning system on and off
repeatedly. (The fan may not oper-
ate in freezing temperatures.)
7If the fan is not operating:
Stop the hybrid system
immediately and contact your
Toyota dealer.
If the fan is operating:
Have the vehicle inspected at
the nearest Toyota dealer.
8 Check if “Engine Coolant
Temp High Stop in a Safe
Place See Owner's Manual”
is shown on the multi-infor-
mation display.
If the message does not disappear:
Stop the hybrid system and contact

4867-2. Steps to take in an emergency
your Toyota dealer.
If the message is not displayed:
Have the vehicle inspected at the
nearest Toyota dealer.
If “Hybrid System Over-
heated Output Power
Reduced” is shown on the
multi-information display
1 Stop the vehicle in a safe
place.
2 Stop the hybrid system and
carefully lift the hood.
3 After the hybrid system has
cooled down, inspect the
hoses and radiator core (radi-
ator) for any leaks.
Radiator
Cooling fan
If a large amount of coolant leaks,
immediately cont act your Toyota
dealer.
4 The coolant level is satisfac-
tory if it is between the “FULL” and “LOW” lines on
the reservoir.
Reservoir
“FULL” line
“LOW” line
5 Add coolant if necessary.
Water can be used in an emer-
gency if coolant is unavailable.
6After stopping the hybrid sys-
tem and waiting for 5 minutes
or more, start the hybrid sys-
tem again and check if
“Hybrid System Overheated
Output Power Reduced” is
shown on the for the
multi-information display.
If the message does not disappear:
Stop the hybrid system and contact
your Toyota dealer.
If the message is not displayed:
The hybrid system temperature has
dropped and the vehicle may be
driven normally.

4877-2. Steps to take in an emergency
7
When trouble arises
However, if the message appears
again frequently, contact your Toy-
ota dealer.
WARNING
■When inspecting under the
hood of your vehicle
Observe the following precau-
tions.
Failure to do so may result in seri-
ous injury such as burns.
●If steam is seen coming from
under the hood, do not open the
hood until the steam has sub-
sided. The engine compart-
ment may be very hot.
●After the hybrid system has
been turned off, check that the
“READY” indicator is off.
When the hybrid system is oper-
ating, the gasoline engine may
automatically start, or the cool-
ing fan may suddenly operate
even if the gasoline engine
stops. Do not touch or approach
rotating parts such as the fan,
which may lead to fingers or
clothing (especially a tie, a scarf
or a muffler) getting caught,
resulting in serious injury.
●Do not loosen the radiator cap
and the coolant reservoir caps
while the hybrid system and
radiator are hot.
High temperature steam or
coolant could spray out.
NOTICE
■When adding engine/power
control unit coolant
Add coolant slowly after the
hybrid system has cooled down
sufficiently. Adding cool coolant to
a hot hybrid system too quickly
can cause damage to the hybrid
system.
■To prevent damage to the
cooling system
Observe the following precau-
tions:
●Avoid contaminating the coolant
with foreign matter (such as
sand or dust, etc.).
●Do not use any coolant additive.

4887-2. Steps to take in an emergency
1Stop the hybrid system. Shift
the shift lever to P and set the
parking brake.
2 Remove the mud, snow or
sand from around the front
wheels.
3 Place wood, stones or some
other material under the front
wheels to help provide trac-
tion.
4 Restart the hybrid system.
5 Shift the shift lever to D or R
and release the parking
brake. Then, while exercising
caution, depress the acceler-
ator pedal.
■When it is difficult to free the
vehicle
Press to turn off TRAC.
If the vehicle becomes
stuck
Carry out the following pro-
cedures if the tires spin or
the vehicle becomes stuck
in mud, dirt or snow:
Recovering procedure
WARNING
■When attempting to free a
stuck vehicle
If you choose to push the vehicle
back and forth to free it, make
sure the surrounding area is clear
to avoid striking other vehicles,
objects or people. The vehicle
may also lunge forward or lunge
back suddenly as it becomes free.
Use extreme caution.
■When shifting the shift lever
Be careful not to shift the shift
lever with the accelerator pedal
depressed.
This may lead to unexpected
rapid acceleration of the vehicle
that may cause an accident
resulting in death o r serious injury.
NOTICE
■To avoid damage to the
hybrid transmission and
other components
●Avoid spinning the front wheels
and depressing the accelerator
pedal more than necessary.
●If the vehicle remains stuck
even after these procedures are
performed, the vehicle may
require towing to be freed.

539What to do if... (Troubleshooting)
Is the power switch in ON?
If you cannot release the shift lever
by depressing the brake pedal with
the power switch in ON ( P.214)
 Is the window lock switch
pressed?
The power window except for the
one at the driver’s seat cannot be
operated if the win dow lock switch
is pressed. ( P.175)
 The auto power off function
will be operated if the vehicle
is left in ACC or ON (the
hybrid system is not operat-
ing) for a period of time.
( P.210)
 The seat belt reminder light is
flashing
Are the driver and the passengers
wearing the seat belts? ( P.448)
 The parking brake indicator is
on
Is the parking br ake released?
(  P.217)
Depending on the situation,
other types of warning buzzer
may also sound. ( P.445, 456)
 Did anyone inside the vehicle
open a door during setting the
alarm?
The sensor detects it and the alarm
sounds. ( P. 7 8 )
Do one of the following to stop
the alarms:
 Unlock the doors.
 Turn the power switch to ACC
or ON, or start the hybrid sys-
tem.
 Is the message displayed on
the multi-information display?
Check the message on the
multi-informat ion display. (P.456)
 When a warning light turns on
or a warning message is dis-
played, refer to P.445, 456.
The shift lever cannot be
shifted from P even if you
depress the brake pedal
The windows do not open
or close by operating the
power window switches
The power switch is
turned off automatically
A warning buzzer sounds
during driving
An alarm is activated and
the horn sounds (vehicles
with an alarm)
A warning buzzer sounds
when leaving the vehicle
A warning light turns on
or a warning message is
displayed

544Alphabetical Index
Electric Power Steering (EPS)............................................... 312Warning light ........................ 448
Electronic key ......................... 124 Battery-saving function......... 143
If the electronic key does not operate properly ................. 477
Replacing the battery ........... 423
Electronic roof sunshade Jam protection function ........ 180
Operation ............................. 179
Electronically Controlled Brake System (ECB) ....................... 311
Emergency flashers ............... 438
Emergency, in case of If a warning buzzer sounds .. 445
If a warning light turns on ..... 445
If a warning message is dis-played................................. 456
If the 12-volt battery is dis- charged .............................. 479
If the electronic key does not operate properly ................. 477
If the fuel filler door cannot be opened ............................... 476
If the hybrid sy stem will not start
........................................... 474
If the vehicle is submerged or water on the road is rising .. 439
If you have a flat tire ............. 461
If you lose your keys ............ 475
If you think something is wrong ........................................... 443
If your vehicle becomes stuck ........................................... 488
If your vehicle has to be stopped in an emergency................. 438
If your vehicle needs to be towed ........................................... 441
If your vehicle overheats ...... 484
Energy monitor ....................... 119 Engine
ACCESSORY mode . ............209
Compartment........................396
Engine switch .......................207
Hood .....................................394
How to start the hybrid system ...........................................207
Identification number ............491
If the hybrid sys tem will not start
...........................................474
If your vehicle has to be stopped in an emergency .................438
Ignition switch (power switch) ...........................................207
Overheating ..........................484
Power switch ........................207
Tachometer.......................87, 91
Engine coolant Capacity ...............................493
Checking ..............................399
Preparing and checking before winter ..................................320
Engine coolant temperature gauge .................................87, 91
Engine oil Capacity ...............................492
Checking ..............................396
Preparing and checking before winter ..................................320
Warning light.........................446
Engine oil maintenance data .398
Engine switch (power switch)207 If your vehicle has to be stopped in an emergency .................438
EPS (Electric Po wer Steering)
...............................................312 Warning light.........................448
EV drive mode......................... 211
EV indicator...............................70
Event data recorder (EDR) .........7

546Alphabetical Index
High mounted stoplightReplacing light bulbs ............ 428
High-voltage components ....... 73
Hill-start assist control .......... 311
Hood Open .................................... 394
Hooks Cargo net hooks ................... 350
Coat hooks ........................... 363
Retaining hooks (floor mat) .... 24
Horn ......................................... 159
Hybrid battery (tr action battery)
Location.................................. 73
Specification ......................... 492
Warning message .................. 76
Hybrid battery (traction battery) air vents .................................. 75
Hybrid system .......................... 69 Acoustic vehicle alerting system............................................. 71
Emergency shut off system .... 76
Energy monitor/consumption screen ................................ 119
EV drive mode...................... 211
High voltage components....... 73
Hybrid system precautions ..... 73
If the hybrid sy stem will not start
........................................... 474
Overheating.......................... 486
Power (ignition) switch ......... 207
Regenerative braking ............. 70
Starting the hybrid system.... 207
Hybrid System Indicator ... 88, 94, 11 7
Hybrid transmission .............. 213 S mode ................................. 215
Hybrid vehicle driving tips .... 318
I
I/M test ..................................... 390
Identification Engine .................................. 491 Vehicle ..................................490
Ignition switch (power switch) ...............................................207Auto power off fun ction .........210
Changing the power switch modes.................................209
If your vehicle has to be stopped in an emergency .................438
Immobilizer system ..................77
Indicators ..................................84
Initialization Items to initialize ...................523
Maintenance .................387, 398
Power windows ....................173
Tire pressure w arning system
...........................................409
Inside rear view m irror ...160, 161
Instrument panel light control89, 96
Interior lights...........................343 Front interior light .................343
Rear interior light ..................343
Intuitive parking assist Function................................283
Warning message.................285
J
JackPositioning a floor jack .........395
Vehicle-equipped jack ..........462
Jack handle .............................462
Jam protection function Electronic roof sunshade ......180
Moon roof .............................176
Panoramic moon r oof ...........180
Power back door ..................136
Power windows ....................173
K
Keyless entry Smart key system .................142

551Alphabetical Index
Linked mirror function when reversing ............................ 171
Mirror position memory ........ 153
RCTA function ...................... 291
Side turn signal lights Replacing light bulbs ............ 428
Turn signal lever ................... 216
Side windows ...... ................... 173
Smart key system Antenna location .................. 142
Entry functions ............. 127, 132
Starting the hybrid system.... 207
Snow tires ............................... 320
Spare tire ................................. 461 Storage location ................... 462
Spark plug ............................... 494
Specifications ......................... 490
Speedometer ...................... 87, 91
Sport mode ............................. 308
Steering wheel Adjustment ........................... 159
Heated steering wheel ......... 341
Meter control switches ... 97, 107
Stop lights Replacing light bulbs ............ 428
Storage features ..................... 346
Stuck If the vehicle becomes stuck 488
Suggestion function....... 105, 112
Sun visors ............................... 368
Sunshade Roof...................................... 176
Switches Activating the Automatic High Beam .................................. 226
Automatic High Beam system ........................................... 226
Brake Hold switch ................ 220
Digital Rearview Mirror control switches ............................. 161
Door lock switches ............... 130
Driving mode select switch... 308 Driving position memory
switches..............................153
Dynamic radar cruise control with full-speed range switch264
Electronic roof sunshade switches..............................179
Emergency flashers switch...438
EV drive mode switch ........... 211
Fog light switch .....................229
Garage door opener switches ...........................................370
Heated steering wheel switch ...........................................341
Ignition switch .......................207
Instrument panel light control switches..........................89, 96
Intuitive parking assist switch284
Light switches .......................223
LTA (Lane Tracing Assist) switch ...........................................259
Meter control switches....97, 107
Moon roof switches ..............176
“ODO TRIP” switch .................89
“ODO” switch ..........................95
Outside rear v iew mirror
switches..............................171
Panoramic moon roof switches ...........................................179
Parking brake switch ............217
PCS OFF switch ...................245
PKSB (Parking Support Brake) switch .................................299
Power door lock switch.........130
Power switch ........................207
Power window switches .......173
RCTA switch .........................292
Rear window and outside rear view mirror defoggers switch...........................................330
Seat heater switches ............341
Seat ventilator switches........341
“SOS” button ..........................65