engine coolant TOYOTA HIGHLANDER 2023 Owner's Manual

4467-2. Steps to take in an emergency
• “Oil Pressure Low Stop in a Safe
Place See Owner's Manual”
• “Charging System Malfunction
Stop in a Safe Place See Owner's
Manual”
●If “Smart Key System Malfunction
See Owner's Manual” is shown on
the multi-information display, it
may indicate a malfunction. Have
the vehicle inspected by your Toy-
ota dealer immediately.
●If any of the following messages
are shown on the multi-informa-
tion display, follow the instruc-
tions.
• “Engine Coolant Temp High Stop
in a Safe Place See Owner's Man-
ual” ( P.469)
• “High Transmission Fluid Temp
See Owner's Manual” ( P.201)
 Stop the vehicle in a safe
place on a hard, flat surface.
 Set the parking brake.
 Shift the shift lever to P.
 Stop the engine.
 Turn on the emergency flash-
ers. ( P.424)
 For vehicles with power back
door: Turn off the power back
door system. ( P.494)
NOTICE
■If “High Power Consumption
Partial Limit on AC/Heater
Operation” is displayed fre-
quently
There is a possible malfunction
relating to the charging system or
the battery may be deteriorating.
Have the vehicle inspected by
your Toyota dealer.
If you have a flat tire
Your vehicle is equipped
with a spare tire. The flat tire
can be replaced with the
spare tire.
For details about tires:
 P.393
WARNING
■If you have a flat tire
Do not continue driving with a flat
tire.
Driving even a short distance with
a flat tire can damage the tire and
the wheel beyond repair, which
could result in an accident.
Before jacking up the
vehicle

4697-2. Steps to take in an emergency
7
When trouble arises1Stop the vehicle in a safe
place and turn off the air con-
ditioning system, and then
stop the engine.
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 engine has cooled
down sufficiently, inspect the
NOTICE
■When handling jumper cables
When connecting the jumper
cables, ensure that they do not
become entangled in the cooling
fan or engine drive belt.
If your vehicle over-
heats
The following may indicate
that your vehicle is over-
heating.
 The needle of the engine
coolant temperature gauge
( P.79) enters the red zone
or a loss of engine power is
experienced. (For example,
the vehicle speed does not
increase.)
 “Engine Coolant Temp High
Stop in a Safe Place See
Owner’s Manual” is shown
on the multi-information dis-
p l a y.
 Steam comes out from
under the hood.
Correction procedures

4707-2. Steps to take in an emergency
hoses and radiator core (radi-
ator) for any leaks.
Radiator
Cooling fan
If a large amount of coolant leaks,
immediately contact 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.
6
Start the engine and turn the
air conditioning system on to
check that the radiator cool-
ing 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 engine 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 engine and contact your
Toyota dealer.
If the message is not displayed:
Have the vehicle inspected at the
nearest Toyota dealer.

4717-2. Steps to take in an emergency
7
When trouble arises
1Stop the engine. 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 engine.
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.
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.
●Keep hands and clothing (espe-
cially a tie, a scarf or a muffler)
away from the fan and belts.
Failure to do so m ay cause the
hands or clothing to be caught,
resulting in serious injury.
●Do not loosen the radiator cap
and the coolant reservoir cap
while the engin e and radiator
are hot.
High temperature steam or
coolant could spray out.
NOTICE
■When adding engine coolant
Add coolant slowly after the
engine has cooled down suffi-
ciently. Adding cool coolant to a
hot engine too quickly can cause
damage to the engine.
■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.
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

4778-1. Specifications
8
Vehicle specifications
the vehicle is operated at high
speeds, or under extreme
load conditions.
How to read oil container label:
The International Lubricant
Specification Advisory Commit-
tee (ILSAC) Certification Mark is
added to some oil containers to
help you select the oil you should use.
Cooling system
Capacity
Gasoline
engine
Vehicles with Stop & Start system
12.3 qt. (11.6 L, 10.2 Imp. qt.)
Vehicles without Stop & Start system
11.7 qt. (11.1 L, 9.8 Imp. qt.)
Intercooler3.3 qt. (3.1 L, 2.7 Imp. qt.)
Coolant type
Use either o f the following:
 “Toyota Super Long Life Coolant”
 Similar high-quality et hylene glycol-based
non-silicate, non -amine, non-nitrite, and
non-borate coolant with long-life hybrid organic
acid technology
Do not use pla in water alone.
Ignition system (spark plug)
MakeNGK DILZKAR8E7H
Gap0.028 in. (0.7 mm)
NOTICE
■Iridium-tipped spark plugs
Use only iridium-tipped spark plugs. Do not adjust the spark pl ug gap.

4888-1. Specifications
Grade C corresponds to a level of
performance which all passenger
car tires must meet under the Fed-
eral Motor Vehicle Safety Standard
No. 109.
Grades B and A represent higher
levels of performance on the labo-
ratory test wheel than the minimum
required by law. Warning: The temperature grades
of a tire assume tha
t it is properly
inflated and not overloaded.
Excessive speed, underinflation, or
excessive loading, either sepa-
rately or in combination, can cause
heat buildup and possible tire fail-
ure.
Glossary of tire terminology
Tire related termMeaning
Cold tire infl ation pressure
Tire pressure when the vehicle has been
parked for three hours or more, or has not
been driven more than 1 mile or 1.5 km
under that condition
Maximum inflation pressure
The maximum cold inf lated pressure to
which a tire may be inflated, shown on the
sidewall of the tire
Recommended inflation pres-
sureCold tire inflation pressure recommended
by a manufacturer
Accessory weight
The combined weight (in excess of those
standard items which may be replaced) of
automatic transmission, power steering,
power brakes, power windows, power
seats, radio and heater, to the extent that
these items are available as fac-
tory-installed equipment (whether installed
or not)
Curb weight
The weight of a motor vehicle with stan-
dard equipment, including the maximum
capacity of fuel, oil and coolant, and if so
equipped, air conditioning and additional
weight optional engine

528Alphabetical Index
Electric Power Steering (EPS)............................................... 307Warning light ........................ 433
Electronic key ......................... 112 Battery-saving function......... 132
If the electronic key does not operate properly ................. 463
Replacing the battery ........... 410
Electronic roof sunshade Jam protection function ........ 169
Operation ............................. 168
Emergency flashers ............... 424
Emergency, in case of If a warning buzzer sounds .. 431
If a warning light turns on ..... 431
If a warning message is dis-played................................. 442
If the battery is discharged ... 465
If the electronic key does not operate properly ................. 463
If the engin e will not start ..... 460
If the fuel filler door cannot be opened ............................... 462
If the vehicle is submerged or water on the road is rising .. 425
If you have a flat tire ............. 446
If you lose your keys ............ 461
If you think something is wrong ........................................... 429
If your vehicle becomes stuck ........................................... 471
If your vehicle has to be stopped in an emergency................. 424
If your vehicle needs to be towed ........................................... 427
If your vehicle overheats ...... 469
Engine ACCESSORY mode ............. 199
Compartment ....................... 386
Engine switch ....................... 197
Fuel pump shut off system ... 430
Hood..................................... 384 How to start the engine ........197
Identification number ............475
If the engine will not start......460
If your vehicle has to be stopped
in an emergency .................424
Ignition switch (engine switch) ...........................................197
Overheating ..........................469
Tachometer.......................79, 82
Engine coolant Capacity ...............................477
Checking ..............................389
Preparing and checking before winter ..................................314
Engine coolant temperature gauge .................................79, 82
Engine immobilizer system .....69
Engine oil Capacity ...............................476
Checking ..............................386
Preparing and checking before winter ..................................314
Warning light.........................432
Engine oil maintenance data .388
Engine switch .........................197 Auto power off fun ction .........200
Changing the engine switch modes.................................199
If your vehicle has to be stopped in an emergency .................424
EPS (Electric Po wer Steering)
...............................................307 Warning light.........................433
Event data recorder (EDR) .........7
F
Flat tire Tire pressure w arning system
...........................................396
Vehicles with a spare tire......446
Floor mats .................................24

536Alphabetical Index
Checking .............................. 393
If you have a flat tire ............. 446
Inflation pressure.................. 405
Information ........................... 484
Replacing ............................. 446
Rotating tires ........................ 396
Size ...................................... 479
Snow tires ............................ 314
Spare tire.............................. 446
Tire inflation pressure display function............................... 396
Tire pressure warning system ........................................... 396
Warning light ........................ 435
Tools ........................................ 447
Top tether strap ........................ 62
Total load capacity ................. 474
To w i n g Dinghy towing....................... 196
Emergency towing................ 427
Trailer towing ........................ 185
Toyota Safety Sense 2.5 + Automatic High Beam .......... 213
Dynamic radar cruise control with full-speed range .......... 249
LTA (Lane Tracing Assist) ..... 239
PCS (Pre-Collision System) . 228
RSA (Road Sign Assist) ....... 261
TRAC (Traction Control) ........ 307
Traction Control (TRAC) ........ 307
Trailer Sway Control .............. 307
Trailer towing .......................... 185
Transmission Automatic transmission ........ 201
Driving mode select switch... 300
If the shift lever cannot be shifted from P................................. 202
M mode ................................ 203
Trip meters .......................... 80, 85
Turn signal lights Replacing light bulbs ............ 415
Turn signal lever ................... 204U
USB charging ports ................349
V
Vanity lights ............................359
Vanity mirrors .........................359
Vehicle data recording ...............6
Vehicle identification number474
Vehicle information display .....91
Vehicle Stability Control (VSC)...............................................307
Ventilators (seat ventilators) .335
VSC (Vehicle Stability Control) ...............................................307
W
Warning buzzers ABS ......................................433
Airbags .................................432
Approach warning ................256
Brake hold ............................438
Brake Override System ........433
Brake system ........................431
Charging system ..................432
Downshifting .........................203
Drive-Start Control ................433
Electric power steering .........433
Engine ..................................432
Hands off steering wheel warn- ing (LTA) .............................248
High coolant temperature .....431
Intuitive parking assist .280, 282, 436
Low engine oil pressure .......432
LTA (Lane Tracing Assist) ...239, 243, 436
Open door .................... 116, 118
PKSB (Parking Support Brake) ...........................................437
Pre-collision braking .............230

537Alphabetical Index
RCTA (Rear Cross Traffic Alert)........................................... 436
Seat belt ....................... 434, 435
Warning lights ........................ 431 ABS ...................................... 433
Brake hold operated indicator........................................... 438
Brake Override System ........ 433
Brake system ....................... 431
Charging system .................. 432
Drive-Start Control ............... 433
Electric power steering ......... 433
High coolant temperature ..... 431
Intuitive parking assist OFF indi- cator ................................... 436
Low engine oil pressure ....... 432
Low fuel level ....................... 434
LTA indicator ......................... 436
Malfunction indicator lamp ... 432
Parking brake indicator ........ 438
PKSB OFF indicato r ............. 437
Pre-collision system ............. 437
RCTA OFF indicator ............. 436
Seat belt reminder light 434, 435
Slip indicator......................... 438
SRS ...................................... 432
Stop & Start cancel indicator 436
Tire pressure ........................ 435
Warning message..................... 95
Warning messages................. 442
Washer Adding .................................. 392
Preparing and c hecking before
winter.................................. 314
Switch........................... 216, 219
Washing and waxing .............. 370
Weight Cargo capacity ..................... 184
Load limits ............................ 184
Weight .................................. 474
Wheels ..................................... 407 Size ...................................... 479 Window lock switch ...............164
Windows
Power windows ....................162
Rear window defogger .........324
Washer .........................216, 219
Windshield defogger ..............324
Windshield wiper de-icer .......324
Windshield wipers Rain-sensing windshield wipers...................................216, 219
Winter driving tips ..................314
Wireless charger.....................350
Wireless remote control Battery-Saving Function .......132
Locking/Unlocking ................ 113
Replacing the battery ...........410
For infor mation regarding the equipment listed
below, refer to the “MUL-
TIMEDIA OWNER’S MAN-
UAL”.
· Navigation system
· Audio/visual system
· Rear view monitor system
· Toyota parking assist monitor
· Panoramic view monitor