2023 TOYOTA SEQUOIA HYBRID overheating

3944-5. Using the driving support systems
Owners Manual_USA_M0C043_en
Touch the switch at the bottom
right on multimedia to activate
Straight Path Assist. Straight
Pass Assist controls steering to
back up the trailer in a straight-
line. The system can be overrid-
den by using steering wheel to
adjust trailer direction.
The driver is always responsible
for paying attention to the vehi-
cle’s surroundings and driving
safely. This system does not
control braking. Driver needs to
control vehicle speed, control
braking, and stop the vehicle to
avoid any collision.
For best results, reverse slowly
when using Straight Path Assist.
Trailer Backup Guide system
is canceled when the trailer
cannot be detected (e.g. dirty
camera lens, insufficient light-
ing condition, obstruction of
the trailer in the rear camera
view, incorrectly selected
trailer, etc.)
 Guidance mode is canceled
when any of the following
occurs:
• Press the Trailer Backup Guide
switch
*
• Press the Camera switch*
• Vehicle speed is greater than approximately 4.7 mph (7.6 km/h)
• VSC or ABS is operated
*
• Back door is opened*
• Trailer tracking is lost
• Shift the shift lever out of R
• There is a system malfunction
*
*
: Includes Trailer Backup Guide system cancel
 Straight Path Assist is can-
celed when any of the follow-
ing occurs:
• Any of the events, above, that
cancel Guidance mode occur
• Press the Straight Path Assist switch on the multimedia screen
• The system temperature preser- vation function operates (to pre-
vent power steering equipment
from overheating)
This light’s usage for Trailer
Backup Guide is controlled by
the Trailer Backup Guide sys-
tem and the driver does not
need to activate the light sepa-
rately.
For other usage: P. 4 1 9
Using Straight Path
Assist
Canceling the systemTrailer hitch light

4175-1. Using the air conditioning system and defogger
Owners Manual_USA_M0C043_en
5
Interior features
■Rear seat heaters/seat ven-
tilators (if equipped) Adjust the rear seat heater
temperature level
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 indicato r (red) light up
during operation.
Adjust the rear seat ventilator
fan speed level
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 (blue) light up
during operation.
■The heated steering wheel, seat
heaters and seat ventilators can
be used when
The power swit ch 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.
●Do not use seat heater more
than necessary.

5097-2. Steps to take in an emergency
Owners Manual_USA_M0C043_en
7
When trouble arises
■Brake system warning light (warning buzzer)
■Brake system warning light (warning buzzer)
■High coolant temperature warning light*
*: This light illuminates on the mu lti-information display with a message.
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 malfunc-
tion 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. C ontinuing to drive the vehi-
cle may be dangerous.
Warning lightDetails/Actions
(Yellow)
Indicates a malfunction in:
 The parking brake system;
 The regenerative braking system; or
 The electronically controlled brake system
 Have the vehicle inspecte d by your Toyota dealer
immediately.
Warning lightDetails/Actions
Indicates that the engine is overheating
 Immediately stop the v ehicle in a safe place.
Handling method ( P.543)

5437-2. Steps to take in an emergency
Owners Manual_USA_M0C043_en
7
When trouble arises
■If the engine coolant tem-
perature gauge enters the
red zone or “Engine Cool-
ant Temp High Stop in a
Safe Place See Owner’s
Manual” is shown on the
multi-information display
1 Stop the vehicle in a safe
place and turn off the air con-
ditioning system, and then
stop the hybrid system.
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 hybrid system has
cooled down sufficiently,
inspect the hoses, engine
radiator core (radiator) and
intercooler radiator core
(radiator) for any leaks.
If a large amount of coolant leaks,
immediately cont act your Toyota dealer.
Cooling fan
Radiator
Intercooler radiators
4 The coolant level is satisfac-
tory if it is between the “F” or
“FULL” and “L” or “LOW”
lines on the reservoir.
If your vehicle overheats
The following may indicate that your vehicle is overheating.
The needle of the engine coolant temperature gauge ( P.93)
enters the red zone or a loss of engine (hybrid system) power i s
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 display.
Steam comes out from under the hood.
Correction procedures

Owners Manual_USA_M0C043_en
Alphabetical Index601
Panoramic moon roof ........... 182
Power window lock switch.... 176
Power window precautions .. 175
Rear door child-protectors.... 118
Removed electronic key battery precautions......................... 494
Seat belt extender precautions ............................................. 30
Seat belt precautions ............. 53
Child-protectors .. ................... 118
Cleaning .......................... 450, 453 Aluminum wheel ornaments . 450
Aluminum wheels ................. 450
Digital Rear-view Mirror........ 165
Exterior ................................. 450
Interior .................................. 453
Radar sensor........................ 245
Seat belts ............................. 453
Clock ......................................... 93
Coat hooks .............................. 434
Condenser .............................. 469
Console box ............................ 424
Console box light ................... 418
Consumption screen.............. 108
Coolant .................................... 468 Checking .............................. 468
Cooling system ...................... 468 Engine overheating .............. 543
Coussins gonflables Modification et é limination en fin
de vie des coussins gonflables ........................................... 593
Crawl Control .......................... 373
Cruise control Dynamic radar cruise control with full-speed range .......... 275
Cup holders ............................ 422
Current fuel consumption ....... 99
Curtain shield airbags ............. 37
Customizable features ........... 570D
DAC ..........................................380
Daytime running light system228
Daytime running lights Replacing light bulbs ............498
Deck divider ............................426
Defogger Outside rear view mirrors .....408
Rear window.........................408
Windshield ............................407
Differential ...............................554
Digital Rear-view Mirror .........160
Dimension ...............................548
Dinghy towing ......................... 211
Display Dynamic radar cruise control with full-speed range ..........275
Head-up display ...................104
Intuitive parking assist ..........294
LTA (Lane Tracing Assist) .....267
Multi-information display.........97
Warning messages ...............519
Display change button .............95
Distance until next engine oil change .....................................95
Do-it-yourself maintenance ...457
Door courtesy lights...............418
Door lock Back door .............................122
Side doors ............................ 115
Smart key system .................139
Wireless remote control........ 113

Owners Manual_USA_M0C043_en
Alphabetical Index603
If you have a flat tire ............. 523
If you lose your keys ............ 534
If you think something is wrong........................................... 507
If your vehicle becomes stuck ........................................... 546
If your vehicle has to be stopped in an emergency................. 502
If your vehicle needs to be towed ........................................... 505
If your vehicle overheats ...... 543
Engine ..................................... 550 ACC...................................... 215
Compartment ....................... 465
How to start the hybrid system........................................... 212
If the hybrid sy stem will not start
........................................... 532
If your vehicle has to be stopped in an emergency................. 502
Overheating.......................... 543
Power switch ........................ 212
Engine coolant ....................... 468 Capacity ............................... 552
Checking .............................. 468
Preparing and c hecking before
winter.................................. 401
Engine coolant temperature gauge....................................... 93
Engine oil Capacity ............................... 551
Checking .............................. 466
Warning light ........................ 510
Engine oil pressure gauge ...... 93
Engine switch (power switch)212 Auto power off function ........ 216
Changing the power switch modes ................................ 215
If your vehicle has to be stopped in an emergency................. 502
Starting the hybrid system.... 212 Enhanced Vehicle Stability Con-
trol (Enhanced VSC ) .............383
Enhanced VSC (Enhanced Vehi- cle Stability Control).............383
EPS (Electric Po wer Steering)
...............................................383 Warning light......................... 511
Event data recorder (EDR) .........8
F
Flat tire.....................................523 Tire pressure w arning system
...........................................476
Floor mats .................................26
Fluid Automatic transm ission ........553
Brake ....................................554
Washer .................................470
Fog light Replacing light bulbs ............498
Switch ...................................231
Footwell lights ........................418
Four-wheel drive system .......369
Front fog light Replacing light bulbs ............498
Front passenger occupant clas- sification system ....................47
Front seats ..............................144 Adjustment ...........................144
Cleaning ...............................453
Correct driving posture ...........27
Driving position memory .......152
Head restraints .....................155
Memory recall function .........154
Power easy access system ..152
Seat heaters ....... ..................415
Seat position memory...........152
Seat ventilators.....................415

Owners Manual_USA_M0C043_en
Alphabetical Index607
MirrorsDigital Rear-view Mirror........ 160
Inside rear view mirror.......... 159
Outside rear view mirror defog-gers .................................... 408
Outside rear view mirrors ..... 170
Vanity mirrors ....................... 440
Mode select switch TOW HAUL switch ............... 220
Moon roof .......................... ...... 177
Multi-information display......... 97 Audio system-linked display . 100
Changing the display.............. 98
Driving informatio n display ..... 99
Dynamic radar cruise control with full-speed range .......... 275
Fuel economy......................... 99
Hybrid System Indicator ......... 99
Intuitive parking assist .......... 294
LTA (Lane Tracing Assist) ..... 267
Menu icons ............................. 98
Meter control switches ........... 98
Navigation system-linked display ........................................... 100
Settings ................................ 101
Tire pressure ........................ 476
Trailer settings ...................... 102
Vehicle information display... 100
Warning messages............... 519
Multi-terrain Moni tor .............. 352
Automatic display mode ....... 355
Camera switch ..................... 352
Function ............................... 353
Menu button ......................... 353
Multi-terrain Monitor precautions ........................................... 362
Screen display and functions355
Things you should know....... 362
Multi-terrain Select ................. 377N
Navigation system-linked display .......................................100, 104
O
Odometer...................................95
Odometer and trip meter display Display change button ............95
Display items ..........................95
Off-road precautions ..............398
Oil Differential oil ........................554
Engine oil..............................551
Transfer oil............................553
Opener Back door .....................124, 126
Hood .....................................464
Opening the fuel tank cap ....241
Outside rear view mirrors Adjustment ...........................170
BSM (Blind Spot M onitor) .....286
Folding..................................171
Mirror position me mory.........152
Outside rear view mirror defog- gers ....................................408
RCTA (Rear Cross Traffic Alert) ...........................................301
Outside temperature ........93, 107
Overheating.............................543