engine coolant TOYOTA HIGHLANDER HYBRID 2019 (in English) User Guide

5668-2. Steps to take in an emergency
HIGHLANDER_HV_U
●Fluid leaks un der the vehicle.
(Water dripping from the air conditioning a fter use is normal.)
● Flat-looking tires or uneven tire wear
● Engine coolant temperature gauge needle continually points high er
than normal.
● Changes in exhaust sound
● Excessive tire squeal when cornering
● Strange noises related to the suspension system
● Pinging or other noises related to the hybrid system
● Engine missing, stumb ling or running roughly
● Appreciable loss of power
● Vehicle pulls heavily to one side when braking
● Vehicle pulls heavily to one s ide when driving on a level road
● Loss of brake effectiveness, spongy feeling, pedal almost touch es
the floor
If you think something is wrong
If you notice any of the followi ng symptoms, your vehicle proba -
bly needs adjustment or repair. Contact your Toyota dealer as
soon as possible.
Visible symptoms
Audible symptoms
Operational symptoms

5818-2. Steps to take in an emergency
8
When trouble arises
HIGHLANDER_HV_U
Indicates that the LDA (Lane Departure Alert with
steering control) system has determined that the
driver does not have the hands on the steering
wheel while the steering control function is on If the driver operates the steering wheel only a
small amount, the system may be unable to
detect the steering wheel operations and this
warning may be displayed.
A buzzer also sounds.
 Firmly hold the steering wheel.
Indicates that the engine coolant temperature is
too high
A buzzer also sounds.
 P. 630
Indicates a malfunction in the vehicle’s charging
system
Immediately stop the vehicle in a safe place
and contact your Toyota dealer. Continuing
to drive the vehicle may be dangerous.
Indicates that the radar sensor is dirty or covered
with ice
A buzzer also sounds.
 Clean the sensor.
Indicates that the dynamic radar cruise control
system cannot be used temporarily due to bad
weather
A buzzer also sounds.
 Use the dynamic radar cruise control sys-
tem when it becomes available again.
Warning messageDetails/Actions

6308-2. Steps to take in an emergency
HIGHLANDER_HV_U
●The needle of the engine coolant temperature gauge ( P. 1 0 9 )
enters the red zone or a loss of hybrid system power is experi-
enced. (For example, the vehicle speed does not increase.)
● “Hybrid System Overheated Reduced Output Power” is shown on
the multi-inform ation display.
● Steam comes out f rom under the hood.
■If the needle of the engine cool ant temperature gauge enters
the red zone
Stop the vehicle in a safe place and turn off the air conditioning
system, and then stop the hybrid system.
If you see steam:
Carefully lift the hood after the steam subsides.
If you do not see steam:
Carefully lift the hood.
After the hybrid system has
cooled down sufficiently,
inspect the hoses and radia-
tor core (radiator) for any
leaks. Radiator
Cooling fans
If a large amount of coolant
leaks, immediately contact
your Toyota dealer.
If your vehicle overheats
The following may indicate that your vehicle is overheating.
Correction procedures
1
2
3
1
2

6338-2. Steps to take in an emergency
8
When trouble arises
HIGHLANDER_HV_U
■Messages displays
The message illustrations used are intended as examples, and ma y differ
from the image that is actually displayed on the multi-informat ion display.
WARNING
■When inspecting under th e hood of your vehicle
Observe the following precautions.
Failure to do so may result in serious injury such as burns.
● If steam is seen coming from under the hood, do not open the ho od until
the steam has subsided. The engine compartment may be very hot.
● After the hybrid system has been turned off, check that the “READY” indi-
cator are off.
When the hybrid system is operating, the gasoline engine may au tomati-
cally start, or the cooling fans may suddenly operate even if the gasoline
engine stops. Do not touch or approach rotating parts such as the fans,
which may lead to fingers or clothing (especially a tie, a scar f or a muffler)
getting caught, resulting in serious injury.
● Do not loosen the radiator cap and the coolant reservoir caps w hile 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 suff iciently.
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 precautions:
● Avoid contaminating the coolant with foreign matter (such as sa nd or dust
etc.).
● Do not use any coolant additive.

6449-1. Specifications
HIGHLANDER_HV_U
Cooling system
Capacity (reference)
Gasoline engine
Power control unit13.1 qt. (12.4 L, 10.9 Imp. qt.)
2.0 qt. (1.9 L, 1.7 Imp. qt.)
Coolant typeUse either of the following.
• “Toyota Super Long Life Coolant”
• Similar high-quality ethylene glycol-based
non-silicate, non-amine, non-nitrite, and
non-borate coolant with long-life hybrid
organic acid technology
Do not use plain water alone.
Ignition system
Spark plug
MakeDENSO FK20HBR8
Gap0.031 in. (0.8 mm)
NOTICE
■ Iridium-tipped spark plugs
Use only iridium-tipped spark plugs. Do not adjust the spark pl ug gap.
Electrical system
12-volt battery
Open voltage at 68F
(20 C): 12.0 V or More
If the voltage is lower than the standard value,
charge the battery.
(Voltage is checked 20 minutes after the hybrid
system and all lights are turned off.)
Charging rates5 A max.

6609-1. Specifications
HIGHLANDER_HV_U
Glossary of tire terminology
Tire related termMeaning
Cold tire inflation pres-
sure
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
pressureThe maximum cold inflated pressure to which
a tire may be inflated, shown on the sidewall
of the tire
Recommended infla-
tion pressureCold tire inflation pressure recommended by a
manufacturer
Accessory weight
The combined weight (in excess of those stan-
dard items which may be replaced) of hybrid
transmission, power steering, power brakes,
power windows, power seats, radio and
heater, to the extent that these items are avail-
able as factory-installed equipment (whether
installed or not)
Curb weight
The weight of a motor vehicle with standard
equipment, including the maximum capacity of
fuel, oil and coolant, and if so equipped, air
conditioning and additional weight optional
engine
Maximum loaded vehi-
cle weight
The sum of:
(a) Curb weight
(b) Accessory weight
(c) Vehicle capacity weight
(d) Production options weight
Normal occupant
weight150 lb. (68 kg) times the number of occupants
specified in the second column of Table 1
*
that follows
Occupant distributionDistribution of occupants in a vehicle as speci-
fied in the third column of Table 1
* below

704Alphabetical index
HIGHLANDER_HV_U
Engine coolant ......................... 513Capacity ................................ 644
Checking ............................... 513
Preparing and checking before winter....................... 344
Engine coolant temperature gauge...................................... 109
Engine oil ................................. 510
Capacity ................................ 642
Checking ............................... 510
Oil pressure warning message ............................. 584
Preparing and checking before winter....................... 344
Enhanced VSC ......................... 335
Entune Audio ........................... 355 Audio input ............................ 359
AUX port/USB port................ 359
CD player .............................. 373
iPod....................................... 379
MP3/WMA disc ..................... 373
Optimal use........................... 370
Portable music player ........... 387
Radio .................................... 371
Steering wheel audio
switch ................................. 358
USB memory ........................ 383
Entune Audio Plus
*
Entune Premium Audio*
EPS (Electric Power Steering)...... 336 Function ................................ 336
Warning light ......................... 568
EV drive mode.......................... 237
Event data recorder (EDR) ........ 11 Flat tire ..................................... 596
Floor mats .................................. 28
Fluid
Brake .................................... 645
Hybrid transmission .............. 645
Washer ................................. 516
Fog lights ................................. 255 Replacing light bulbs ............ 545
Switch ................................... 255
Wattage ................................ 649
Front automatic air
conditioning system ............. 440
Front door courtesy lights Location ................................ 453
Wattage ................................ 649
Front fog lights ........................ 255 Replacing light bulbs ............ 545
Switch ................................... 255
Wattage ................................ 649
Front passenger occupant
classification system .............. 54
Front personal lights............... 454 Wattage ................................ 649
Front seats ............................... 160 Adjustment............................ 160
Cleaning ............................... 494
Correct driving posture ........... 30
Head restraints ..................... 173
Seat heaters ......................... 451
Seat position memory ........... 169
Seat ventilators ..................... 451
F

709Alphabetical index
HIGHLANDER_HV_U
Noise from under vehicle............ 8
Odometer.................................. 109
OilEngine oil .............................. 642
Opener Back door.............................. 137
Fuel filler door ....................... 264
Glass hatch ........................... 148
Hood ..................................... 506
Outer foot lights....................... 453
Outside rear view mirrors ....... 181 Adjusting and folding ............ 181
BSM (Blind spot monitor) ...... 320
Mirror position memory ......... 169
Outside rear view mirror
defoggers ........................... 442
Outside temperature display .................................... 469
Overheating, Hybrid system ... 630 Panoramic moon roof ............. 191
Jam protection function ........ 193
Operation .............................. 191
Panoramic view monitor
*
Parking assist sensors (intuitive parking assist)
*
Parking brake........................... 246 Operation .............................. 246
Parking brake engaged
warning buzzer ................... 580
Parking brake engaged
warning light ....................... 568
Parking brake engaged warning message ............... 580
Parking lights........................... 247 Light switch ........................... 247
Replacing light bulbs ............ 545
Wattage ................................ 649
PCS (Pre-Collision System).......... 274
Pre-collision brake assist ...... 275
Pre-collision braking ............. 275
Pre-collision warning ............ 275
Warning light......................... 569
Personal lights......................... 454 Wattage ................................ 649
Power back door ..................... 136
Power control unit ..................... 91
Power control unit coolant ..... 513 Capacity................................ 644
Checking............................... 513
Preparing and checking before winter ...................... 344
N
O
P
*: Refer to “NAVIGATION AND MULTIMEDIA SYSTEM OWNER’S MANUAL”