Page 390 of 444
390 5-2. Steps to take in an emergency
After the hybrid system has
cooled down sufficiently, check
the engine coolant level and
inspect the radiator core (radia-
tor) for any leaks.
Add engine coolant if necessary.
Water can be used in an emer-
gency if engine coolant is unavail-
able.
(→P. 401)
■ If “HYBRID SYSTEM OVER HEAT” is shown on the multi-infor-
mation display
Stop the vehicle in a safe plac e and turn off the air condition-
ing system.
Leave the hybrid system operating and carefully lift the hood.
Check if the cooling fans are operating.
If the fans are operating: Wait until “HYBRID SYSTEM OVER HEAT” disappears and
then stop the hybrid system.
If the message does not disapp ear, call your Toyota dealer.
If the fans are not operating: Stop the hybrid system immediately and call your local
Toyota dealer.
STEP4
STEP5
STEP1
STEP2
STEP3
Page 391 of 444
5
When trouble arises
391
5-2. Steps to take in an emergency
After the hybrid system has
cooled down, check the power
control unit coolant level and
inspect the cooling system for
leaks.
Add power control unit coolant if
necessary.
Water can be used in an emer-
gency if power control unit cool-
ant is unavailable. (
→P. 401)
Have the vehicle checked at the nearest Toyota dealer as soon as
possible.
STEP4
STEP5
■Overheating
The following symptoms may occur when your vehicle is overheating:
●Hybrid system output decreases.
● Steam is coming from the engine area.
Page 392 of 444

392 5-2. Steps to take in an emergency
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.
Page 401 of 444
401
6-1. Specifications
6
Vehicle specifications
Cooling system
Ignition system
Gasoline engine
Power control
unit
6.6 qt. (6.2 L, 5.5 Imp.qt.)
3.1 qt. (2.9 L, 2.6 Imp.qt.)
Coolant typeUse either of the following.
• “Toyota Super Long Life Coolant”
• Similar high-quality ethylene glycol-based non-silicate, non-amine, non-nitrite, and non-borate coolant with
long-life hybrid organic acid technology
Do not use plain water alone.
Spark plug
Make
Gap DENSO SK20R11
NGK IFR6A11
0.043 in. (1.1 mm)
NOTICE
■
Iridium-tipped spark plugs
Use only iridium-tipped spark plugs. Do not adjust spark plug gap.
Page 434 of 444

434 Alphabetical index
Child restraint systemBooster seats, definition ........ 105
Booster seats, installation ..... 109
Convertible seats, definition ............................. 105
Convertible seats, installation ........................... 109
Front passenger occupant
classification system ........... 100
Infant seats, definition ........... 105
Infant seats, installation......... 109
Installing CRS with lower anchorages ......................... 113
Installing CRS with
seat belts ............................ 110
Installing CRS with top straps .................................. 115
Child safety Airbag precautions ..................95
Child restraint system............ 105
Child-protectors .......................51
How your child should wear the seat belt ..........................64
Installing child restraints ........ 109
Moon roof precautions ............77
Power window lock switch.......73
Power window precautions .....74
Removed key battery precautions ......................... 323
Seat belt comfort guide ........... 61
Seat belt extender precautions ...........................67
Seat belt precautions ..............65
Seat heater precautions ........ 259
Trunk precautions ...................55
12-volt battery precautions ................. 302, 387
Child-protectors .........................51 Cleaning
Exterior.................................. 274
Interior ................................... 276
Seat belts .............................. 277
Clock ......................................... 255
Compass................................... 269
Condenser ................................ 298
Console box ............................. 248
Cooling system
Engine overheating ............... 389
Cruise control .......................... 155
Cup holder ................................ 250
Curtain shield airbags ............... 88
Customizable features ............ 421
Daytime running light
system .................................... 151
Defogger Rear window ......................... 182
Side mirror ............................ 182
Dimension ................................ 396
Dinghy towing .......................... 171
Display Trip information ..................... 146
Warning message ................. 357
Do-it-yourself maintenance .... 285
Door courtesy light Door courtesy light ................ 244
Wattage................................. 405
Doors Door glasses ........................... 73
Door lock ..................... 36, 47, 50
Side mirrors............................. 71
Driver's seat belt reminder
light ......................................... 351
Driving Break-in tips .......................... 121
Correct posture ....................... 86
Procedures............................ 120
Winter driving tips ................. 166
D