coolant temperature TOYOTA HIGHLANDER 2021 Owners Manual (in English)

772-1. Instrument cluster
2
Vehicle status information and indicators
HIGHLANDER_U
7-inch display
The units used on the meters and some indicators may differ
depending on the target region.
Warning lights inform the driver
of malfunctions in the indicated
vehicle’s systems.
Warning lights
(U.S.A.)
Brake system warning
light
*1 (  P.458)
(red)
(Canada)
Brake system warning
light
*1 (  P.458)
(yellow)
Brake system warning
light
*1 ( P.458)
High coolant temperature
warning light
*2 (  P.458)
Charging system warning
light
*1 (  P.459)
Low engine oil pressure
warning light
*2 (  P.459)
(U.S.A.)
Malfunction indicator
lamp
*1 ( P.459)
(Canada)
Malfunction indicator
lamp
*1 ( P.459)
SRS warning light
*1
(  P.459)
(U.S.A.)
ABS warning light*1
(  P.460)
(Canada)
ABS warning light*1
(  P.460)
Brake Overri de System
warning light/Drive-Start
Control warning light
*2
(  P.460)
(red/yel-
low)
Electric power steering
system warning light
( P.460)
Low fuel leve l warning
light
*1(  P.461)
Driver’s and front passen-
ger’s seat belt reminder
light ( P.461)

822-1. Instrument cluster
HIGHLANDER_U
Clock (P.84)
Speedometer
Fuel gauge
Displays the quantity of fu el remaining in the tank
Odometer and trip meter display ( P.83)
Shift position display ( P.206)
Outside temperature
Displays the outside temperature within the range of -40°F (-40°C) to 122°F
(50°C). Low outside temperature indicator comes on when the ambient
temperature is 37°F (3°C) or lower.
Engine coolant temperature gauge
Displays the engine c oolant temperature
■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.91, 101)
WARNING
■The information display at
low temperatures
Allow the interior of the vehicle to
warm up before using the liquid
crystal information display. At
extremely low temperatures, the
information disp lay 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.

2004-1. Before driving
HIGHLANDER_U
or steep grade. If the engine
coolant temperature gauge
indicates overheating, imme-
diately turn off the air condi-
tioning (if in use), pull your
vehicle off the road and stop
in a safe spot. (P.495)
 Always place wheel blocks
under both the vehicle’s and
the trailer’s wheels when
parking. Put the transmission
in P and apply the parking
brake. Avoid parking on a
slope, but if unavoidable, do
so only after performing the
following:
1 Apply the brakes and keep
them applied.
2 Have someone place wheel
blocks under both the vehi-
cle’s and trailer’s wheels.
3 When the wheel blocks are in
place, release the brakes
slowly until the blocks absorb
the load.
4 Shift into P and apply the
parking brake.
5 Turn off the engine.
 When restarting after parking
on a slope:
1 With the transmission in P,
start the engine. Be sure to
keep the brake pedal
depressed.
2 Shift into a forward gear. If
reversing, shift into R. 3
If the parking brake is in man-
ual mode, release the park-
ing brake. ( P.211)
4 Release the brake pedal, and
slowly pull or back away from
the wheel blocks. Stop and
apply the brakes.
5 Have someone retrieve the
blocks.

2094-2. Driving procedures
4
Driving
HIGHLANDER_U
1Upshifting
2 Downshifting
The gear changes once every time
the shift lever or paddle shift switch
is operated.
The selected gear, from M1 to M8,
will be fixed and displayed on the
meters.
When in the M position, the gear
will not change unless the shift
lever is operated.
However, even when in the M
position, the gears will be auto-
matically changed in the follow-
ing situation:
When vehicle speed drops
(downshift only).
 When the automatic transmis-
sion fluid or engine coolant
temperature is low.
 When automatic transmis-
sion fluid temperature is high
(upshift only).
 When the needle of the
tachometer is in the red zone
(the range which exceeds the
allowable revs of the engine).
In the following situation, the
gear will not shift even if the shift
lever is operated.
 The vehicle speed is low
(upshift only).
■Downshifting restriction warn-
ing buzzer
To help ensure safety and driving
performance, downshifting opera-
tion may sometimes b e restricted. In
some circumstances, downshifting may not be possible even when the
paddle shift switch is operated. (A
buzzer will sound twice.)

2744-5. Using the driving support systems
HIGHLANDER_U
■Operating conditions
●The Stop & Start system is opera-
tional when all of the following
conditions are met:
• The vehicle has been driven a cer-
tain amount of time.
• The brake pedal is being depressed firmly. (Except when
the vehicle is stopped by the
dynamic radar cruise control with
full-speed range when in vehi-
cle-to-vehicle distance control
mode)
• The D shift position is selected.
• The driver’s seat belt is fastened.
• The driver’s door is closed.
• The selected driving mode is
NORMAL or ECO mode.
• The selected driv ing mode is not
SNOW mode.
• The windshield defogger is off. (vehicles without a manual air
conditioning system)
• The accelerator pedal is not being depressed.
• The engine is adequately warmed
up.
• The outside temperature is 23°F (-5°C ) or higher.
• The hood is closed. ( P.275)
●In the following situations the
engine may not be stopped by the
Stop & Start system. This is not a
malfunction of the Stop & Start
system.
• When the air conditioning system is being used.
• When the battery is undergoing a periodic recharge.
• When the battery is not sufficiently
charged, such as if the vehicle
has been parked for a long time
and the battery charge has
decreased, the e lectric load is
large, the battery fluid tempera-
ture is excessively low or the bat-
tery has deteriorated.
• When the brake booster vacuum is low.
• When the elapsed time since the
engine was restarted is short.
• When the vehicle is stopped fre- quently, such as when in a traffic jam.
• When the engine coolant tem- perature or transm ission fluid tem-
perature is extremely low or high.
• When the vehicle is stopped on a
steep incline.
• When the steering wheel is being operated.
• When the vehicle is being driven
in a high altitude area.
• When the battery fluid tempera- ture is extremely low or high.
• For a while after the battery termi- nals have been disconnected and
reconnected.
●When the engine is stopped by
the Stop & Star t system, the
engine will be restarted automati-
cally if any of the following condi-
tions are met: (To enable the
engine to be stopped by the Stop
& Start system aga in, drive the
vehicle.)
• The air conditioning system is turned on. (vehicles without a
manual air conditioning system)
• The windshield defogger is turned on. (vehicles without a manual air
conditioning system)
• The shift lever is shifted from D or P.
• The shift lever i s shifted from P.
(When the engine is stopped by
the Stop & Start system when the
shift lever is in P.)
• The driver’s seat belt is unfas- tened.
• The driver’s door is opened.
• The driving mode is changed from
NORMAL or ECO mode to
another mode.
• The driving mode is changed to SNOW mode.
• The Stop & Start cancel switch is
pressed.
• The steering wheel is operated.
• The accelerator pedal is depressed.
• The vehicle starts to roll on an incline.
●When the engine is stopped by
the Stop & Star t system, the
engine may restart automatically

4096-3. Do-it-yourself maintenance
6
Maintenance and care
HIGHLANDER_U
Headlight aim
( P.440)• Phillips-head
screwdriver
Light bulbs
( P.441)
• Bulb with same
number and
wattage rating as
original
• Phillips-head screwdriver
• Flathead screw- driver
• Wrench
Radiator and
condenser
(  P.416)

Tire inflation
pressure
( P.431)• Tire pressure
gauge
• Compressed air source
Washer fluid
( P.418)
• Water or washer
fluid containing
antifreeze (for
winter use)
• Funnel (used only for adding
water or washer
fluid)
WARNING
The engine compartment contains
many mechanisms and fluids that
may move suddenly, become hot,
or become electrically energized.
To avoid death or serious injury,
observe the following precautions.
■When working on the engine
compartment
●Keep hands, clothing and tools
away from the moving fan and
engine drive belt.
ItemsParts and tools●Be careful not to touch the
engine, radiator, exhaust mani-
fold, etc. right a fter driving as
they may be hot. Oil and other
fluids may also be hot.
●Do not leave anything that may
burn easily, such as paper and
rags, in the engine compart-
ment.
●Do not smoke, cause sparks or
expose an open flame to fuel or
the battery. Fuel and battery
fumes are flammable.
●Be extremely cautious when
working on the battery. It con-
tains poisonous and corrosive
sulfuric acid.
■When working near the elec-
tric cooling fan or radiator
grille
Be sure the engine switch is off.
With the engine switch in ON, the
electric cooling fa n may automati-
cally start to run if the air condi-
tioning is on and/or the coolant
temperature is high. ( P.416)
■Safety glasses
Wear safety glasses to prevent
flying or falling material, fluid
spray, etc. from getting in your
eyes.
NOTICE
■If you remove the air cleaner
filter
Driving with the air cleaner filter
removed may cause excessive
engine wear due to dirt in the air.

4126-3. Do-it-yourself maintenance
HIGHLANDER_U
Engine coolant reservoir ( P.415)
Fuse boxes ( P.438)
Engine oil filler cap ( P.413)
Engine oil level dipstick ( P.412)
Battery ( P.416)
Brake fluid reservoir ( P.416)
Washer fluid tank ( P.418)
Electric cooling fan
Condenser ( P.416)
Radiator ( P.416)
With the engine at operating
temperature and turned off,
check the oil level on the dip- stick.
■Checking the engine oil
1 Park the vehicle on level
ground. After warming up the
engine and turning it off, wait
Engine compar tment
Components
Checking and adding the
engine oil

4567-2. Steps to take in an emergency
HIGHLANDER_U
be in good condition.
Fluid leaks under the vehicle
(Water dripping from the air
conditioning after use is nor-
mal.)
 Flat-looking tires or uneven
tire wear
 Engine coolant temperature
gauge needle continually
points higher 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 engine
 Engine missing, stumbling or
running roughly
 Appreciable loss of power
 Vehicle pulls heavily to one If you think something
is wrong
If you notice any of the fol-
lowing symptoms, your
vehicle probably needs
adjustment or repair. Con-
tact your Toyota dealer as
soon as possible.
Visible symptoms
Audible symptoms
Operational symptoms

4587-2. Steps to take in an emergency
HIGHLANDER_U
■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.495)

4957-2. Steps to take in an emergency
7
When trouble arises
HIGHLANDER_U
1Stop 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.81) 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