2012 TOYOTA HIGHLANDER HYBRID engine overheat

5
When trouble arises
565
5-2. Steps to take in an emergency
Have the vehicle inspected at your
nearest Toyota dealer as soon as
possible.
■ Overheating
The following symptoms may occur when your vehicle is overheating:
●Hybrid system output decreases.
● Steam comes from the engine area.
CAUTION
■To prevent an accident or injury when inspecting under the hood of
your vehicle
●If steam is seen coming from under the hood, do not open the hood until
the steam has subsided. The engine compartment may be very hot, caus-
ing serious injury such as burns.
● With a hybrid vehicle, there are times when the gasoline engine automati-
cally starts to run or the cooling fans suddenly start to operate. Do not
touch or approach the rotating parts of the belt or fans. Doing so may lead
to fingers, clothes or tools getting caught, resulting in an accidental injury.
● Do not loosen the coolant reservoir cap while the hybrid system and radia-
tor are hot.
Serious injury, such as burns, may result from hot coolant and steam
released under pressure.
NOTICE
■When adding engine/power control unit coolant
Wait until the hybrid system has cooled down before adding engine/power
control unit coolant.
When adding coolant, do so slowly. Adding cool coolant to a hot hybrid sys-
tem too quickly can cause damage to the hybrid system.

625
Alphabetical index
Engine
Compartment........................ 462
Engine switch ............... 179, 184
Hood ..................................... 458
How to start the
hybrid system ..................... 179
Identification number ............ 571
If the hybrid system will not start .............................. 552
Ignition switch ............... 179, 184
Overheating .......................... 562
Power switch ........................ 179
Engine compartment cover .... 463
Engine coolan t temperature
gauge ..................................... 196
Engine oil Capacity ............................... 575
Checking .............................. 464
Preparing and checking before winter ...................... 251
Engine oil maintenance data ........................................ 448
Engine switch .................. 179, 184
Engine/power control unit
coolantCapacity ............................... 577
Checking .............................. 467
Preparing and checking before winter ...................... 251
EPS ........................................... 234
EV-Drive Mode ......................... 188
Event data recorder .................. 26 Floor mat...................................427
Fluid
Brake .....................................471
Washer ..................................472
Fog lights
Replacing light bulbs .............510
Switch....................................219
Wattage .................................583
Front automatic air conditioning system..............284
Front fog lights
Replacing light bulbs .............510
Switch....................................219
Wattage .................................583
Front manual air conditioning system..............278
Front passenger occupant
classification system ............145
Front passenger's seat belt reminder light.........................531
Front seats Adjustment ..............................83
Front side marker lights
Replacing light bulbs .............510
Switch....................................213
Wattage .................................583
Front turn signal lights Replacing light bulbs .............510
Wattage .................................583
Fuel Capacity ................................573
Fuel gauge ............................196
Gas station information .........636
Information ............................584
Refueling ...............................118
Type ......................................573
Fuel door...................................118
Fuel filler door ..........................118
Fuses.........................................497F

628 Alphabetical index
Odometer .................................. 196
Off-road precautions ............... 241
OilEngine oil .............................. 464
Opener
Back door ................................70
Fuel filler door ....................... 118
Glass hatch .............................79
Hood...................................... 458
Outside rear view mirrors Adjusting and folding ............. 108
Outside temperature display .................................... 203
Overhead console .................... 407
Overheating, Hybr id system ... 562
Parking brake ........................... 194
Parking lights Replacing light bulbs ............. 510
Switch.................................... 213
Wattage ................................. 583
Personal/interior lights
Switch.................................... 402
Wattage ................................. 583
Power outlet ............................. 420
Power switch ............................ 179
Power windows ........................ 110 Radiator .................................... 470
Radio ......................................... 308
Rear automatic air
conditioning system ............. 296
Rear manual air
conditioning system ............. 293
Rear seat Adjustment .............................. 86
Folding down second
seatback ............................... 87
Folding down third
seatback ............................... 89
Removing the second center seat ............................ 90
Stowing the second center seat ............................ 90
Rear seat entertainment
system*
Rear turn signal lights Replacing light bulbs ............. 510
Wattage................................. 583
Rear view mirror Compass ............................... 436
Rear view monitor system ...... 230
Rear window defogger ............ 300
Rear window wiper .................. 224
Replacing Fuses .................................... 497
Key battery ............................ 494
Light bulbs............................. 510
Tires ...................................... 539
Reporting safety defects for
U.S. owners ............................ 606O
P
R

633
What to do if...
What to do if...
A tire puncturesP. 539If you have a flat tire
The hybrid system does not
startP. 552If the hybrid system will not start
P. 123Immobilizer system
P. 558If the 12-volt battery is discharged
The shift lever cannot be
moved outP. 554If the shift lever cannot be shifted
from P
The engine coolant temperature
gauge enters the red zone
Steam can be seen coming
from under the hood
P. 562If your vehicle overheats
The key is lostP. 555If you lose your keys/wireless
remote control transmitter
The 12-volt battery runs outP. 558If the 12-volt battery is discharged
The doors cannot be lockedP. 6 5Side doors
P. 7 0Back door
The horn begins to soundP. 126Alarm
The vehicle is stuck in
mud or sandP. 566If the vehicle becomes stuck