engine overheat TOYOTA HIGHLANDER 2021 (in English) User Guide

3204-5. Using the driving support systems
HIGHLANDER_Uoperation. The indicator will flash
during operation, and then go off
when the system is fully off.
■When the downhill assist con-
trol system is operated continu-
ously
This may cause the brake actuator
to overheat. In th is case, the down-
hill assist control system will stop
operating, a buzzer will sound and
the downhill assist control system
indicator will start flashing, and
“Traction Control Turned OFF” will
be shown on the multi-information
display. Refrain from using the sys-
tem until the downh ill assist control
system indicator stays on and the
message goes off. (The vehicle can
be driven normally during this time.)
■Sounds and vibrations caused
by the downhill assist control
system
●A sound may be heard from the
engine compartment when the
engine is started or just after the
vehicle begins to move. This
sound does not indicate that a
malfunction has occurred in down-
hill assist control system.
●Either of the following conditions
may occur when the downhill
assist control system is operating.
None of these are indicators that a
malfunction has occurred.
• Vibrations may be felt through the
vehicle body and steering.
• A motor sound may be heard after the vehicle comes to a stop.
■System malfunction
In the following cases, have your
vehicle checked by your Toyota
dealer.
●The downhill assist control system
indicator does not come on when
the engine switch is turned to ON.
●The downhill assist control system
indicator does not come on when
the downhill assist control switch
is pressed.
●The slip indicator comes on.
WARNING
■The system may not operate
on the following surfaces,
which may lead to an acci-
dent causing death or serious
injury
●Slippery surfaces such as wet
or muddy roads
●Icy surface
●Unpaved roads

3244-5. 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

3615-2. Using the air conditioning system and defogger
5
Interior features
HIGHLANDER_U
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.

449
7
7
When trouble arises
HIGHLANDER_U
When trouble arises
.7-1. Essential informationEmergency flashers .... 450
If your vehicle has to be stopped in an emergency.................................. 450
If the vehicle is trapped in rising water ................ 451
7-2. Steps to take in an emer- gency
If your vehicle needs to be towed......................... 453
If you think something is wrong ........................ 456
Fuel pump shut off system .................................. 457
If a warning light turns on or a warning buzzer sounds.................................. 458
If a warning message is dis- played........................ 468
If you have a flat tire.... 472
If the engine will not start .................................. 486
If you lose your keys ... 487
If the fuel filler door cannot be opened ................. 488
If the electronic key does not operate properly .. 489
If the vehicle battery is dis- charged ..................... 491
If your vehicle overheats .................................. 495If the vehicle becomes stuck
.................................. 497

4707-2. Steps to take in an emergency
HIGHLANDER_U
■If “Engine Stopped Steering
Power Low” is displayed
This message is displayed if the
engine is stopped while driving.
When steering wheel operations are
heavier than usual, grip the steering
wheel firmly and operate it using
more force than usual.
■If “Shift to P when Parked” is
displayed
This message is displayed when the
driver’s door is opened without turn-
ing the engine switch off with the
shift lever in any position other than
P. Change the shift lever to P.
■If “Auto Power OFF to Conserve
Battery” is displayed
Power was cut off due to the auto-
matic power off function. Next time
when starting the engine, increase
the engine speed slightly and main-
tain that level for approximately 5
minutes to recharge the battery.
■If “Headlight System Malfunc-
tion Visit Your Dealer” is dis-
played
The following systems may be mal-
functioning. Have the vehicle
inspected by your Toyota dealer
immediately.
●The LED headlight system (if AFS
[Adaptive Front-lighting System]
equipped)
●AFS (Adaptive Front-lighting Sys-
tem) (if equipped)
●The automatic headlight leveling
system (if equipped)
●Automatic High Beam
■If “Radar Cruise Control
Unavailable” is displayed
The dynamic radar cruise control
with full-speed range system cannot
be used temporarily. Use the system
when it becomes available again.
■If a message that indicates the
malfunction of front camera is
displayed
The following systems may be sus-
pended until the problem shown in
the message is resolved. ( P.233,
464)
●PCS (Pre-Collision system)
●LTA (Lane Tracing Assist)
●Automatic High Beam
●RSA (Road Sign Assist) (if
equipped)
●Dynamic radar cruise control with
full-speed range
■If a message that indicates the
malfunction of radar sensor is
displayed
The following systems may be sus-
pended until the problem shown in
the message is resolved. ( P.233,
464)
●PCS (Pre-Collision system)
●LTA (Lane Tracing Assist)
●Dynamic radar cruise control with
full-speed range
■If “AWD System Overheated
Switching to 2WD Mode” or
“AWD System Overheated 2WD
Mode Engaged” is displayed
(AWD models)
This message may be displayed
when driving under extremely high
load conditions.
Drive the vehicle at low speeds or
stop the vehicle in a safe place with
the engine running until the mes-
sage is cleared.
If the message is not cleared, have
the vehicle inspect ed by your Toyota
dealer.
■If “Check Fuel Cap” is dis-
played
The fuel tank cap is not properly
installed. Correctl y install the fuel
tank cap.

553Alphabetical Index
HIGHLANDER_UClock ................................... 81, 84
Coat hooks .............................. 384
Condenser .............................. 416
Console box ............................ 367
Consumption screen.............. 108
Conversation mirror ............... 386
Cooling system ...................... 415
Engine overheating .............. 495
Cruise control Dynamic radar cruise control with full-speed range .......... 257
Cup holders ............................ 368
Current fuel consumption . 86, 94
Curtain shield airbags ............. 34
Customizable features ........... 521
D
Daytime running light system216 Replacing light bulbs ............ 441
Defogger Outside rear view mirrors ... 337, 343, 347
Rear window ........ 337, 343, 347
Windshield............ 337, 343, 346
Differential Rear differential oil ............... 504
Digital Rearview Mirror .......... 155
Dimension ............................... 500
Dinghy towing ........................ 201
Display Dynamic radar cruise control with full-speed range .......... 257
Head-up display ................... 103
Intuitive parking assist .......... 284
LTA (Lane Tracing Assist) ..... 252
Multi-information display .. 84, 93
RCTA .................................... 292
Toyota Multi-operation touch 334
Warning message ................ 468
Distance until next engine oil change..................................... 83
Do-it-yourself maintenance ... 403 Door courtesy lights...............363
Door lock
Back door .............................121
Side doors ............................ 117
Smart key system .................133
Wireless remote control........ 115
Doors Automatic door locking and unlocking system ................120
Back door .............................121
Door glasses ........................167
Door lock ..............................121
Open door warning buzzer . 118, 120
Outside rear view mirrors .....165
Rear door child-protectors ....120
Downhill assist control system ...............................................319
Drive distance .....................88, 97
Drive information ................88, 97
Driver’s seat position memory Driving position memory .......147
Memory recall function .........149
Drive-start control ..................180
Driving Break-in tips .........................180
Correct driving posture ...........25
Driving mode select switch ...314
Procedures ...........................179
Winter drive tips....................327
Driving information display85, 94
Driving mode select switch ...314
Driving position memory .......147 Memory recall function .........149
Driving range ................86, 94, 95
Driving support system informa- tion display........................87, 97
Dynamic radar cruise control with full-speed range............257Warning message.................267
Dynamic Torque Control AWD system ...................................322

554Alphabetical Index
HIGHLANDER_UDynamic Torque Vectoring AWD
system ................................... 322
E
Eco drive mode ...................... 314
Eco Driving Indicator . 86, 95, 106
Eco Driving Indicator Light86, 95
EDR (Event data recorder)......... 8
Elapsed time ....................... 88, 97
Electric Power Steering (EPS) ............................................... 321Warning light ........................ 460
Electronic key ......................... 114 Battery-saving function......... 134
If the electronic key does not operate properly ................. 489
Replacing the battery ........... 436
Electronic roof sunshade Jam protection function ........ 174
Operation ............................. 173
Emergency flashers ............... 450
Emergency, in case of If a warning buzzer sounds .. 458
If a warning light turns on ..... 458
If a warning message is dis-played................................. 468
If the battery is discharged ... 491
If the electronic key does not operate properly ................. 489
If the engine will not start ..... 486
If the fuel filler door cannot be opened ............................... 488
If the vehicle is trapped in rising water .................................. 451
If you have a flat tire ............. 472
If you lose your keys ............ 487
If you think something is wrong ........................................... 456
If your vehicle becomes stuck ........................................... 497
If your vehicle has to be stopped in an emergency................. 450 If your vehicle ne
eds to be towed
...........................................453
If your vehicle overheats ......495
Engine ACCESSORY mode .............205
Compartment........................412
Engine switch .......................202
Fuel pump shut off system ...457
Hood .....................................410
How to start the engine ........202
Identification number ............501
If the engine will not start......486
If your vehicle has to be stopped in an emergency .................450
Ignition switch (engine switch) ...........................................202
Overheating ..........................495
Tachometer.............................81
Engine coolant Capacity ...............................503
Checking ..............................415
Preparing and checking before winter ..................................327
Engine coolant temperature gauge .......................................81
Engine immobilizer system .....71
Engine oil Capacity ...............................502
Checking ..............................412
Preparing and checking before winter ..................................327
Warning light.........................459
Engine oil maintenance data .414
Engine switch .........................202 Auto power off function .........205
Changing the engine switch modes.................................205
If your vehicle has to be stopped in an emergency .................450
EPS (Electric Power Steering) ...............................................321Warning light.........................460

558Alphabetical Index
HIGHLANDER_UDynamic radar cruise control
with full-speed range .......... 257
Eco Driving Indicator ........ 86, 95
Fuel economy................... 86, 94
LTA (Lane Tracing Assist) ..... 252
Menu icons ....................... 84, 93
Meter control switches ..... 85, 94
Navigation system-linked display ....................................... 87, 97
Pop-up display ................. 84, 93
Settings ............................ 89, 98
Suggestion function........ 92, 102
Tire pressure ............ 88, 97, 422
Vehicle information display88, 97
Warning message .. 92, 102, 468
Multi-terrain Select ................. 315
N
Navigation system-linked display ................................... 87, 97, 106
Noise from under vehicle .......... 6
Normal mode .................. 314, 316
O
“ODO TRIP” switch .................. 83
Odometer .................................. 83
Odometer and trip meter display Display items .......................... 83
“ODO TRIP” switch ................ 83
Pop-up display ....................... 83
Oil Engine oil ............................. 502
Rear differential oil ............... 504
Opener Back door ............................. 123
Fuel filler door ...................... 227
Hood..................................... 410
Outer foot lights Replacing light bulbs ............ 441
Outside rear view mirrors Adjustment ........................... 165 BSM (Blind Sport Monitor) ....278
Linked mirror function when
reversing.............................165
Mirror position memory.........147
Outside rear view mirror defog- gers ....................337, 343, 347
RCTA function.......................292
Outside temperature ................81
Overheating.............................495
P
Panic mode ............................. 116
Panoramic moon roof Jam protection function ........174
Operation..............................173
Parking assist sensors (intuitive parking assist) ......................284
Parking brake Operation.............................. 211
Parking brake engaged warning buzzer.................................213
Warning light.........................465
Warning message.................213
Parking lights Light switch...........................216
Replacing light bulbs ............441
Parking Support Brake function (for rear-crossing vehicles) .310Function................................310
Parking Support Brake function (static objects) ......................304Function................................304
PCS (Pre-Collision System) Function................................235
PCS OFF switch ...................238
Warning light.........................464
Personal lights ........................363
PKSB (Parking Support Brake) ...............................................297Warning message.................302
Power outlets ..........................384