2012 TOYOTA PRIUS PLUS cooling

530 5-2. Steps to take in an emergency
PRIUS +_OM_OM47821E_(EE)Start the hybrid system and turn the air conditioning system
on to check that the radiator cooling fans operate and to
check for coolant leaks from the radiator or hoses.
The fans operate when the air conditioning system is turned on
immediately after a cold start. Confirm that the fans are operating by
checking the fan sound and air flow. If it is difficult to check these,
turn the air conditioning system on and off repeatedly.
(The fans may not operate in freezing temperatures.)
If the fans are not operating:
Stop the hybrid system immediately and contact any autho-
rized Toyota dealer or repairer, or another duly qualified and
equipped professional.
If the fans are operating:
Have the vehicle inspected at the nearest any authorized
Toyota dealer or repairer, or another duly qualified and
equipped professional.
STEP 6
STEP7

5
531 5-2. Steps to take in an emergency
When trouble arises
PRIUS +_OM_OM47821E_(EE)If the hybrid system overheat warning light comes on
Stop the vehicle in a safe place.
Stop the hybrid system and carefully lift the hood.
After the hybrid system has
cooled down, inspect the hoses
and radiator core (radiator) for
any leaks.
Radiator
Cooling fans
If a large amount of coolant leaks,
immediately contact any autho-
rized Toyota dealer or repairer, or
another duly qualified and
equipped professional.
STEP 1
STEP 2
STEP 3

5
533 5-2. Steps to take in an emergency
When trouble arises
PRIUS +_OM_OM47821E_(EE)
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 injuries such as burns.
Check that the indicator on the “POWER” switch and the “READY” indica-
tor are off.
On hybrid vehicles, the gasoline engine may automatically start, or the
cooling fans may suddenly operate even if the gasoline engine stops. Do
not touch or approach rotating parts such as the fans, which may lead to
fingers or clothing (especially a tie, a scarf or a muffler) getting caught,
resulting in serious 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.
To prevent damage to the cooling system
Observe the following precautions:
Avoid contaminating the coolant with foreign matter (such as sand or dust
etc.)
Do not use any coolant additives other than the Toyota genuine or similar
coolant additives

547 6-1. Specifications
6
Vehicle specifications
PRIUS +_OM_OM47821E_(EE)
Cooling system
Ignition system
Capacity
Gasoline
engine
Without an exhaust heat recovery system
6.5 L (6.9 qt., 5.7 Imp.qt.)
With an exhaust heat recovery system
6.9 L (7.3 qt., 6.1 Imp.qt.)
Power
control
unit2.7 L (2.9 qt., 2.4 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 technol-
ogy
Do not use plain water alone.
Spark plug
Make DENSO SC20HR11
Gap 1.1 mm (0.043 in.)
NOTICE
Iridium-tipped spark plugs
Use only iridium-tipped spark plugs. Do not adjust the spark plug gap.

559 6-2. Customization
6
Vehicle specifications
PRIUS +_OM_OM47821E_(EE)
ItemFunctionDefault set-
tingCustom-
ized
setting
Automatic
air condition-
ing system
(P. 326)Switching
between outside
air and recircu-
lated air mode
linked to “AUTO”
switch operationON OFF – O O
Heating/cooling
operation mini-
mized in Eco
drive modeON OFF – – O
Panoramic
roof shades
door lock-
linked auto-
matic closing
function
(P. 370)Operates when
the “POWER”
switch is turned
off and the doors
are locked from
inside or outside
the vehicle using
the wireless
remote control,
or are locked
from outside the
vehicle using the
smart entry &
start system or
mechanical keyON OFF – – O

564 Alphabetical index
PRIUS +_OM_OM47821E_(EE)
Bluetooth®*
Bottle holders........................... 357
Brake
Fluid ...................................... 549
Parking brake ........................ 234
Brake assist.............................. 298
Break-in tips ............................. 203
Brightness control
Instrument cluster light
control ................................. 239
Camera
*
Care
Exterior.................................. 382
Interior ................................... 387
Seat belts .............................. 388
Cargo hooks ............................. 377
CD player
*
Chains ....................................... 321
Child restraint system
Baby seats, definition ............ 173
Baby seats, installation ......... 185
Child seats, definition ............ 173
Child seats,
installation........................... 185
Installing child restraint system
with ISOFIX rigid
anchors ............................... 191
Installing child restraint system
with seat belts ..................... 185
Installing child restraint system
with top strap ...................... 193
Junior seats, definition .......... 173
Junior seats,
installation........................... 185Child safety
Airbag precautions ................ 165
Back door precautions ............ 99
Child restraint system ........... 173
Child-protectors ...................... 95
How your child should wear
the seat belt ........................ 126
Installing
child restraints .................... 184
Panoramic roof
precautions ......................... 371
Power window lock switch .... 135
Power window precautions ... 138
Removed electronic key battery
precautions ......................... 432
Seat belt precautions ............ 127
Seat heater precautions........ 368
12-volt battery precautions ... 416
Child-protectors......................... 95
Cleaning
Exterior ................................. 382
Interior................................... 387
Seat belts .............................. 388
Clock ......................................... 364
Condenser ................................ 410
Console box ............................. 354
Cooling system
Engine overheating ............... 528
Hybrid system overheating ... 528
Cruise control
Cruise control........................ 275
Dynamic radar cruise
control................................. 280
Cup holders.............................. 355
Curtain shield airbags ............. 158
Customizable features ............ 554
C