overheating TOYOTA HIGHLANDER 2020 Owners Manual (in English)

12Pictorial index
HIGHLANDER_U
Precautions for winter season.... .......................................... P.319
To prevent freezing (windshield wiper de-icer) ............. P.330, 335
Precautions for car wash
*.................................................... P.389
Fuel filler door .................................................................... P.225
Refueling method ................................................................. P.225
Fuel type/fuel tank capacity ................................................. P.495
Tires..................................................................................... P.411
Tire size/inflation pressure ........................................... P.411, 499
Winter tires/tire chains ......................................................... P.319
Checking/rotation/tire pressure warning system .................. P.411
Coping with flat tires............................................................. P.464
Hood .................................................................................... P.402
Opening ............................................................................... P.402
Engine oil ............................................................................. P.495
Coping with overheating ...................................................... P.487
Warning messages .............................................................. P.460
Headlights........................................................................... P.214
Parking lights ..................................................................... P.214
Front turn signal lights ...................................................... P.208
Parking lights
*/daytime running lights............................. P.214
Front side marker lights .................................................... P.214
Front fog lights
*.................................................................. P.220
Stop/tail lights .................................................................... P.214
Tail lights............................................................................. P.214
Back-up lights
Shifting the shift lever to R ................................................... P.204
License plate lights............................................................ P.214
Rear turn signal lights ....................................................... P.208
Light bulbs of the exterior lights for driving
(Replacing method: P.432, Watts: P.501)

812-1. Instrument cluster
HIGHLANDER_U
2
Vehicle status information and indicators
■Display items
 Odometer
Displays the total distance the vehi-
cle has been driven.
Trip meter A/trip meter B
Displays the distance the vehicle
has been driven since the meter
was last reset. Trip meters A and B
can be used to record and display
different distances independently.
Distance until next engine oil
change
Displays the distance the vehicle
can be driven until an oil change is
necessary.
■Changing the display
Each time the “ODO TRIP”
switch is pressed, the displayed
item will be changed. When the
trip meter is displayed, pressing
and holding the switch will reset
the trip meter.
■Pop-up display
In some situations the following
will be temporarily displayed:
Distance until next engine oil
change
Displays the distance until the next
engine oil change. This display will
be displayed in the following situa-
tions:
 When the engine switch is
turned to ON.
 When a warning message
indicating that oil mainte-
nance should be performed
soon or is required is dis-
played.
The brightness of the instrument
panel lights can be adjusted.
NOTICE
●The engine may be overheating
if the engine coolant tempera-
ture gauge is in the red zone
(H). In this case, immediately
stop the vehicle in a safe place,
and check the engine after it
has cooled completely.
(  P.487)
Odometer and trip meter
display
Changing the instrument
panel light brightness

1824-1. Before driving
HIGHLANDER_U
WARNING
■When taking a nap in the vehi-
cle
Always turn the engine off. Other-
wise, if you accidentally move the
shift lever or depress the acceler-
ator pedal, this could cause an
accident or fire due to engine
overheating. Additionally, if the
vehicle is parked in a poorly venti-
lated area, exhaust gases may
collect and enter the vehicle, lead-
ing to death or a serious health
hazard.
■When braking
●When the brakes are wet, drive
more cautiously.
Braking distance increases
when the brakes are wet, and
this may cause one side of the
vehicle to brake differently than
the other side. Also, the parking
brake may not securely hold the
vehicle.
●If the brake booster device does
not operate, do not follow other
vehicles closely and avoid hills
or sharp turns that require brak-
ing.
In this case, braking is still pos-
sible, but the brake pedal
should be depressed more
firmly than usual. Also, the brak-
ing distance will increase. Have
your brakes fixed immediately.
●Do not pump the brake pedal if
the engine stalls.
Each push on the brake pedal
uses up the reserve for the
power-assisted brakes.
●The brake system consists of 2
individual hydraulic systems; if
one of the systems fails, the
other will still operate. In this
case, the brake pedal should be
depressed more firmly than
usual and the braking distance
will increase. Have your brakes
fixed immediately.
■If the vehicle becomes stuck
(AWD models)
Do not spin the wheels exces-
sively when any of the tires is up
in the air, or the vehicle is stuck in
sand, mud, etc. This may damage
the driveline components or pro-
pel the vehicle forward or back-
ward, causing an accident.
NOTICE
■When driving the vehicle
●Do not depress the accelerator
and brake pedals at the same
time during driving, as this may
restrain the engine output.
●Do not use the accelerator
pedal or depress the accelera-
tor and brake pedals at the
same time to hold the vehicle on
a hill.
■When parking the vehicle
Always set the parking brake and
shift the shift lever to P. Failure to
do so may cause the vehicle to
move or the vehicle may acceler-
ate suddenly if the accelerator
pedal is accidentally depressed.
■Avoiding damage to vehicle
parts
●Do not turn the steering wheel
fully in either direction and hold
it there for an extended period
of time.
Doing so may damage the
power steering motor.

1984-1. 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.487)
 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.209)
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.

2014-2. Driving procedures
HIGHLANDER_U
4
Driving
ing wheel left and right.
●To prevent the steering lock motor
from overheating, operation of the
motor may be suspended if the
engine is turned on and off repeat-
edly in a short period of time. In
this case, refrain from operating
the engine switch. After about 10
seconds, the steering lock motor
will resume functioning.
■Electronic key battery
 P. 4 2 8
■Operation of the engine switch
●If the switch is not pressed shortly
and firmly, the engine switch
mode may not change or the
engine may not start.
●If attempting to restart the engine
immediately after turning the
engine switch off, the engine may
not start in some cases. After turn-
ing the engine switch off, please
wait a few seconds before restart-
ing the engine.
■Customization
If the smart key system has been
deactivated in a customized setting,
refer to P.481.
1 Stop the vehicle completely.
2 Set the parking brake
( P.209), and shift the shift
lever to P.
Check the parking brake indicator
is illuminated.
3 Press the engine switch.
The engine will stop, and the meter
display will be extinguished.
4Release the brake pedal and
check that “ACCESSORY” or
“IGNITION ON” is not shown
WARNING
■When starting the engine
Always start the engine while sit-
ting in the driver’s seat. Do not
depress the accelerator pedal
while starting the engine under
any circumstances.
Doing so may cause an accident
resulting in death or serious injury.
■Caution while driving
If engine failure occurs while the
vehicle is moving, do not lock or
open the doors until the vehicle
reaches a safe and complete
stop. Activation of the steering
lock in this circumstance may lead
to an accident, resulting in death
or serious injury.
NOTICE
■When starting the engine
●Do not race a cold engine.
●If the engine becomes difficult to
start or stalls frequently, have
your vehicle checked by your
Toyota dealer immediately.
■Symptoms indicating a mal-
function with the engine
switch
If the engine switch seems to be
operating somewhat differently
than usual, such as the switch
sticking slightly, there may be a
malfunction. Contact your Toyota
dealer immediately.
Stopping the engine

2104-2. Driving procedures
HIGHLANDER_U
When the shift lever is moved
into P, the parking brake will
be set, and the parking brake
indicator light and parking
brake light turn on.
Operate the shift lever with the
brake pedal depressed.
■Turns automatic mode off
While the vehicle is stopped,
press and hold the parking
brake switch until a “EPB Shift
Interlock Function Deactivated”
is shown on the multi-informa-
tion display.
■Parking brake operation
●When the engine switch is not in
ON, the parking brake cannot be
released using the parking brake
switch.
●When the engine switch is not in
ON, automatic mode (automatic
brake setting and releasing) is not
available.
■Parking brake automatic
release function
The parking brake will be released
automatically when the accelerator
pedal is slowly depressed under the
following conditions:
●The driver’s door is closed
●The driver is wearing the seat belt
●The shift lever is in a forward or reverse position.
●The malfunction indicator lamp or
brake system warning light is not
illuminated
If the automatic release function
does not operate, release the park-
ing brake manually.
■If “Parking Brake Temporarily
Unavailable” is displayed on
the multi-information display
If the parking brake is operated
repeatedly over a short period of
time, the system may restrict opera-
tion to prevent overheating. If this
happens, refrain from operating the
parking brake. Normal operation will
return after about 1 minute.
■If “Parking Brake Unavailable”
is displayed on the multi-infor-
mation display
Operate the parking brake switch. If
the message does not disappear
after operating the switch several
times, the system may be malfunc-
tioning. Have the vehicle inspected
by your Toyota dealer immediately.
■Parking brake operation sound
When the parking brake operates, a
motor sound (whirring sound) may
be heard. This does not indicate a
malfunction.
■Parking brake indicator light
and parking brake light
●Depending on the engine switch
mode, the parking brake indicator
light and parking brake light will
turn on and stay on as described
below:
ON: Comes on until the parking
brake is released.
Not in ON: Stays on for approxi-
mately 15 seconds.
●When the engine switch is turned
off with the parking brake set, the
parking brake indicator light and
parking brake light will stay on for
about 15 seconds. This does not
indicate a malfunction.

2114-2. Driving procedures
HIGHLANDER_U
4
Driving
■When the parking brake switch
malfunctions
Automatic mode (automatic brake
setting and releasing) will be turned
on automatically.
■Parking the vehicle
 P. 1 7 7
■Parking brake engaged warning
buzzer
A buzzer will sound if the vehicle is
driven with the parking brake
engaged. “Parking Brake ON” is dis-
played on the multi-information dis-
play.
■Warning messages and buzzers
Warning messages and buzzers are
used to indicate a system malfunc-
tion or to inform the driver of the
need for caution. If a warning mes-
sage is shown on the multi-informa-
tion display, read the message and
follow the instructions.
■If the brake system warning
light comes on
 P. 4 5 0
■Usage in winter time
 P. 3 1 9
WARNING
■When parking the vehicle
Do not leave a child in the vehicle
alone. The parking brake may be
released unintentionally and there
is the danger of the vehicle mov-
ing that may lead to an accident
resulting in death or serious injury.
■Parking brake switch
Do not set any objects near the
parking brake switch. Objects
may interfere with the switch and
may lead the parking brake to
unexpectedly operate.
NOTICE
■When parking the vehicle
Before you leave the vehicle, shift
the shift lever to P, set the parking
brake and make sure that the
vehicle does not move.
■When the system malfunc-
tions
Stop the vehicle in a safe place
and check the warning messages.
■When the parking brake can-
not be released due to a mal-
function
Driving the vehicle with the park-
ing brake set will lead to brake
components overheating, which
may affect braking performance
and increase brake wear.
Have the vehicle inspected by
your Toyota dealer immediately if
this occurs.

3164-5. Using the driving support systems
HIGHLANDER_Utions may be generated, but this is
not a malfunction.
■EPS operation sound
When the steering wheel is oper-
ated, a motor sound (whirring
sound) may be heard. This does not
indicate a malfunction.
■Reduced effectiveness of the
EPS system
The effectiveness of the EPS sys-
tem is reduced to prevent the sys-
tem from overheating when there is
frequent steering input over an
extended period of time. The steer-
ing wheel may feel heavy as a
result. Should this occur, refrain
from excessive steering input or
stop the vehicle and turn the engine
off. The EPS system should return
to normal within 10 minutes.
■Automatic reactivation of
TRAC, Trailer Sway Control and
VSC systems
After turning the TRAC, Trailer
Sway Control and VSC systems off,
the systems will be automatically
re-enabled in the following situa-
tions:
●When the engine switch is turned
OFF
●If only the TRAC system is turned
off, the TRAC will turn on when
vehicle speed increases
If both the TRAC and VSC sys-
tems are turned off, automatic
re-enabling will not occur when
vehicle speed increases.
■Operating conditions of Active
Cornering Assist
The system operates when the fol-
lowing occurs.
●TRAC/VSC can operate
●The driver is at tempting to accel-
erate while turning
●The system detects that the vehi-
cle is drifting to the outer side
●The brake pedal is released
■Secondary Collision Brake
operating conditions
The system operates when the SRS
airbag sensor detects a collision
while the vehicle is in motion.
However, the system does not oper-
ate in any of the following situations.
●The vehicle speed is below 6 mph
(10 km/h)
●Components are damaged
■Secondary Collision Brake
automatic cancellation
The system is automatically can-
celed in any of the following situa-
tions.
●The vehicle speed drops below
approximately 6 mph (10 km/h)
●A certain amount of time elapses
during operation
●The accelerator pedal is
depressed a large amount
WARNING
■The ABS does not operate
effectively when
●The limits of tire gripping perfor-
mance have been exceeded
(such as excessively worn tires
on a snow covered road).
●The vehicle hydroplanes while
driving at high speed on wet or
slick roads.
■Stopping distance when the
ABS is operating may exceed
that of normal conditions
The ABS is not designed to
shorten the vehicle’s stopping dis-
tance. Always maintain a safe dis-
tance from the vehicle in front of
you, especially in the following sit-
uations:
●When driving on dirt, gravel or
snow-covered roads
●When driving with tire chains

3535-2. Using the air conditioning system and defogger
HIGHLANDER_U
5
Interior features
Vehicle with a 12.3-inch dis-
play
Vehicle with a 8-inch display
■Front (Toyota multi-opera-
tion touch: Vehicle with a
12.3-inch display)
Select to display the seats
climate screen.
Each time the switch is selected,
the operation condition changes
as follows.
Hi (3 segments lit) Mid (2 seg-
ments lit) Lo (1 segment
lit) Off
The level indicator (red) lights
up during operation.
■Rear
Each time the switch is pressed,
the operation condition changes
as follows.
Hi (3 segments lit) Mid (2 seg-
ments lit) Lo (1 segment
lit) Off
The level indicator (amber)
lights up during operation.
■Operation condition
The engine switch is in ON.
WARNING
■To prevent overheating and
minor burn injuries
Observe the following precautions
when using the seat heaters.
●Do not cover the seat with a
blanket or cushion when using
the seat heater.

547Alphabetical Index
HIGHLANDER_U
Wheels and wheel ornaments ........................................... 388
Clock ................................... 79, 82
Coat hooks .............................. 376
Condenser .............................. 408
Console box ............................ 359
Consumption screen.............. 106
Conversation mirror ............... 378
Cooling system ...................... 407 Engine overheating .............. 487
Cruise control Dynamic radar cruise control with full-speed range .......... 254
Cup holders ............................ 360
Current fuel consumption . 84, 92
Curtain shield airbags ............. 32
Customizable features ........... 515
D
Daytime running light system214 Replacing light bulbs ............ 432
Defogger Outside rear view mirrors ... 329, 335, 339
Rear window ........ 329, 335, 339
Windshield............ 329, 335, 338
Differential Rear differential oil ............... 498
Digital Rearview Mirror .......... 152
Dimension ............................... 492
Dinghy towing ........................ 199
Display Dynamic radar cruise control with full-speed range .......... 254
Head-up display ................... 101
Intuitive parking assist .......... 276
LTA (Lane Tracing Assist) ..... 246
Multi-information display .. 82, 91
RCTA .................................... 284
Toyota Multi-operation touch 326
Warning message ................ 460 Distance until next engine oil
change .....................................81
Do-it-yourself maintenance ...395
Door courtesy lights...............355
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 ........................164
Door lock .............................. 119
Open door warning buzzer . 116, 11 8
Outside rear view mirrors .....162
Rear door child-protectors .... 118
Downhill assist control system ............................................... 311
Drive distance .....................86, 95
Drive information ................86, 95
Driver’s seat position memory Driving position memory .......144
Memory recall function .........145
Drive-start control ..................178
Driving Break-in tips .........................178
Correct driving posture ...........23
Driving mode select switch ...306
Procedures ...........................177
Winter drive tips....................319
Driving information display83, 92
Driving mode select switch ...306
Driving position memory .......144 Memory recall function .........145
Driving range ................84, 92, 93
Driving support system informa- tion display........................85, 95