2017 TOYOTA HIGHLANDER HYBRID overheating

6318-2. Steps to take in an emergency
8
When trouble arises
HIGHLANDER_HV_U (OM48F12U)
●The needle of the engine coolant temperature gauge ( →P. 103)
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-information display.
● Steam comes out from under the hood.
■If the needle of the engine coolant 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

701Alphabetical index
HIGHLANDER_HV_U (OM48F12U)
Care................................... 490, 494Aluminum wheels.................. 491
Exterior ................................. 490
Interior................................... 494
Seat belts .............................. 495
Cargo hooks............................. 457
CD player
*................................ 367
Chains....................................... 339
Child restraint system ............... 62
Booster seats, definition ......... 63
Booster seats, installation ....... 74
Convertible seats, definition ............................... 63
Convertible seats,
installation ............................ 70
Front passenger occupant classification syst em............. 54
Infant seats, definition ............. 63
Infant seats, installation .......... 70
Installing CRS with LATCH anchors .................... 68
Installing CRS with seat belts ...................................... 70
Installing CRS with top tether strap ........................... 76
Child safety ................................ 61 12-volt battery
precautions ................. 520, 629
Airbag precautions .................. 44
Back door precautions .......... 136
Child restraint system ............. 62
Glass hatch precautions ....... 143
How your child should wear the seat belt .......................... 37
Installing child restraints ......... 66
Moon roof precautions .......... 184 Panoramic moon roof
precautions......................... 189
Power window lock switch .... 178
Power window precautions ... 180
Rear door child-protectors .... 127
Removed electronic key battery precautions............. 540
Seat belt extender
precautions........................... 40
Seat belt precautions .............. 39
Seat heater precautions ....... 444
Child-protectors ...................... 127
Cleaning ........................... 490, 494 Aluminum wheels ................. 491
Exterior ................................. 490
Interior .................................. 494
Seat belts.............................. 495
Clock......................................... 461
Coat hooks ............................... 469
Compass .................................. 484
Condenser................................ 514
Console box ............................. 451
Conversation mirror ................ 460
Cooling system........................ 513 Hybrid system overheating ... 631
Cruise control Dynamic radar cruise
control ................................ 292
Cup holders ............................. 453
Curtain shield airbags............... 42
Customizable features ............ 666
C
*: Refer to “NAVIGATION AND MULTIMEDIA SYSTEM OWNER’S MANUAL”

703Alphabetical index
HIGHLANDER_HV_U (OM48F12U)
ECB (Electronically Controlled
Brake System) ....................... 328
Eco drive mode ........................ 234
EDR (Event data recorder) ........ 11
Electric motor (traction motor) ....................... 81
Electric Power Steering
(EPS)....................................... 329 Function ................................ 329
Warning light ......................... 568
Electronic key .......................... 120 Battery-saving function ............................... 148
If the electronic key does not operate properly ................. 623
Replacing the battery ............ 539
Emergency flashers ................ 560 Emergency, in case of
If a warning buzzer
sounds................................ 567
If a warning light turns on ..... 567
If a warning message is displayed ............................ 577
If the 12-volt battery is discharged.......................... 626
If the electronic key does not operate properly ........... 623
If the hybrid system
will not start ........................ 621
If you have a flat tire ............. 597
If you think something is wrong ................................. 566
If your vehicle becomes stuck ................................... 635
If your vehicle has to be stopped in an emergency ... 561
If your vehicle needs to be
towed.................................. 562
If your vehicle overheats....... 631
Energy monitor ........................ 113
Engine ...................................... 640
ACCESSORY mode ............. 226
Compartment ........................ 509
Hood ..................................... 506
How to start the hybrid system .......... ...................... 225
Identification number ............ 640
If the hybrid system
will not start ........................ 621
Ignition switch
(power switch) .................... 225
Overheating .......................... 631
Power switch ........................ 225
E

706Alphabetical index
HIGHLANDER_HV_U (OM48F12U)
Hybrid system ............................ 81Emergency shut off system .... 86
Energy monitor/
consumption screen ........... 113
EV drive mode ...................... 231
High voltage components ....... 85
Hybrid System Indicator........ 105
Hybrid system precautions ..... 85
Hybrid vehicle driving tips ..... 334
If the hybrid system will not start ........................ 621
Overheating .......................... 631
Power (ignition) switch .......... 225
Starting the hybrid system .... 225
Vehicle proximity notification system ......... ......................... 84
Hybrid System Indicator ......... 105
Hybrid transmission ................ 233
If the shift lever cannot be shifted from P ..................... 237
S mode ................................. 235 I/M test ...................................... 503
Identification ............................ 639
Engine .................................. 640
Vehicle .................................. 639
Ignition switch
(power switch) ....................... 225
Illuminated entry system ........ 449
Immobilizer system ................... 91
Indicators ................................. 101
Initialization Maintenance ......................... 498
Moon roof ............................. 183
Panoramic moon roof ........... 187
Power back door................... 136
Power windows..................... 179
Tire pressure warning system .... .............. 525
Inside rear view mirror ............ 173
Interior lights ........................... 447 Switch ................................... 448
Wattage ................................ 649
Intuitive parking assist
*
Jack Positioning the jack............... 508
Vehicle-equipped jack .......... 598
Jack handle .............................. 598
Jam protection function Moon roof ............................. 182
Panoramic moon roof ........... 187
Power back door................... 135
Power window ...................... 178
I
J

709Alphabetical index
HIGHLANDER_HV_U (OM48F12U)
Noise from under vehicle............ 8
Odometer.................................. 103
OilEngine oil .............................. 642
Opener Back door.............................. 131
Fuel filler door ....................... 258
Glass hatch ........................... 142
Hood ..................................... 506
Outer foot lights....................... 447
Outside rear view mirrors ....... 175 Adjusting and folding ............ 175
BSM (Blind spot monitor) ...... 313
Mirror position memory ......... 163
Outside rear view mirror
defoggers ........................... 436
Outside temperature display .................................... 461
Overheating, Hybrid system ... 631 Panoramic moon roof ............. 185
Jam protection function ........ 187
Operation .............................. 185
Panoramic view monitor
*
Parking assist sensors (intuitive parking assist)
*
Parking brake........................... 240 Operation .............................. 240
Parking brake engaged
warning buzzer ................... 581
Parking brake engaged
warning light ....................... 568
Parking brake engaged warning message ............... 581
Parking lights........................... 241 Light switch ........................... 241
Replacing light bulbs ............ 545
Wattage ................................ 649
PCS (Pre-Collision System).......... 268
Pre-collision brake assist ...... 269
Pre-collision braking ............. 269
Pre-collision warning ............ 269
Warning light......................... 569
Personal lights......................... 448 Wattage ................................ 649
Power back door ..................... 130
Power control unit ..................... 85
Power control unit coolant ..... 513 Capacity................................ 644
Checking............................... 513
Preparing and checking before winter ...................... 337
N
O
P
*: Refer to “NAVIGATION AND MULTIMEDIA SYSTEM OWNER’S MANUAL”