coolant TOYOTA PRIUS PLUS 2012 User Guide

470 5-2. Steps to take in an emergency
PRIUS +_OM_OM47821E_(EE)
Stop the vehicle immediately.
The following warning indicates the possibility of damage to the vehi-
cle that may lead to an accident. Immediately stop the vehicle in a
safe place and contact any authorized Toyota dealer or repairer, or
another duly qualified and equipped professional.
Warning lightWarning light/Details
Charging system warning light
Indicates a malfunction in the vehicle’s charging system
Low engine oil pressure warning light
Indicates that the engine oil pressure is too low
High coolant temperature warning light
Indicates that the coolant temperature is too high
Changes from a flashing to a solid light when the engine
coolant temperature increases.
Hybrid system warning light (warning buzzer)
Indicates a malfunction in the hybrid system

528
5-2. Steps to take in an emergency
PRIUS +_OM_OM47821E_(EE)
If your vehicle overheats
Correction procedures
If the high coolant temperature warning light comes on or
flashes
Stop the vehicle in a safe place and turn off the air condition-
ing 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.
The following may indicate that your vehicle is overheating.
The high coolant temperature warning light (P. 470) comes on
or flashes, or a loss of hybrid system power is experienced. (For
example, the vehicle speed does not increase.)
The hybrid system overheat warning light (P. 475) comes on.
Steam comes out from under the hood.
STEP 1
STEP 2

5
529 5-2. Steps to take in an emergency
When trouble arises
PRIUS +_OM_OM47821E_(EE)After the hybrid system has
cooled down sufficiently, 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.
The coolant level is satisfactory if
it is between the “FULL” and
“LOW” lines on the reservoir.
Reservoir
“FULL”
“LOW”
Add coolant if necessary.
Water can be used in an emer-
gency if coolant is unavailable.
STEP 3
STEP 4
STEP 5

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

532 5-2. Steps to take in an emergency
PRIUS +_OM_OM47821E_(EE)The coolant level is satisfactory if
it is between the “F” and “L” lines
on the reservoir.
Reservoir
“F”
“L”
Add coolant if necessary.
Water can be used in an emer-
gency if coolant is unavailable.
Start the hybrid system and check for the instrument cluster.
If the hybrid system overheat warning light does not turn off:
Stop the hybrid system and contact any authorized Toyota
dealer or repairer, or another duly qualified and equipped
professional.
If the hybrid system overheat warning light does not come on:
Have the vehicle inspected at the nearest any authorized
Toyota dealer or repairer, or another duly qualified and
equipped professional.
STEP 4
STEP 5
STEP 6

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.

566 Alphabetical index
PRIUS +_OM_OM47821E_(EE)
Engine
Accessory mode ................... 216
Compartment ........................ 403
Hood ..................................... 397
How to start the hybrid
system ................................ 214
Identification number............. 541
If the hybrid system will not
start..................................... 516
Ignition switch ....................... 214
Overheating .......................... 528
“POWER” switch ................... 214
Engine coolant
Capacity ................................ 547
Checking ............................... 408
Preparing and checking
before winter ....................... 319
Engine/power control unit coolant
Capacity ................................ 547
Checking ............................... 408
Preparing and checking
before winter ....................... 319
Engine oil
Capacity ................................ 543
Checking ............................... 404
Preparing and checking
before winter ....................... 319
EPS............................................ 298
EV drive mode switch.............. 221Floor mats ................................ 375
Fluid
Brake .................................... 549
Washer ................................. 411
Fog lights
Replacing light bulbs............. 445
Switch ................................... 266
Wattage ................................ 551
Foot lights ................................ 347
Front fog lights
Replacing light bulbs............. 445
Switch ................................... 266
Wattage ................................ 551
Front passenger’s seat belt
reminder light ........................ 477
Front position lights
Switch ................................... 261
Front seats
Adjustment ............................ 103
Flattening seatbacks ............. 104
Front turn signal lights
Replacing light bulbs............. 445
Switch ................................... 233
Wattage ................................ 551
Fuel
Capacity ................................ 542
Fuel gauge ............................ 236
Information ............................ 552
Refueling............................... 139
Type ...................................... 552
Fuel door .................................. 139
Fuel filler door.......................... 139
Fuses ........................................ 433F

572 Alphabetical index
PRIUS +_OM_OM47821E_(EE)
USB port*
Vanity lights
Vanity lights........................... 363
Wattage................................. 551
Vanity mirrors .......................... 363
Vehicle identification
number ................................... 541
Vehicle stability control .......... 298
VSC ........................................... 298
Warning buzzers
Brake system ........................ 469
Open door ............................ 476
Seat belt reminder................. 477Warning lights
Anti-lock brake system
(ABS) .................................. 471
Automatic headlight leveling
system ................................ 474
Brake system ................ 469, 472
Charging system ................... 470
Cruise control........................ 474
Electric power steering
system ................................ 471
High coolant temperature ..... 470
Hybrid battery indicator
light ..................................... 473
Hybrid system ....................... 470
Hybrid system overheat ........ 475
LED headlights ..................... 474
Low engine oil pressure ........ 470
Low fuel level ........................ 476
Low hybrid battery
(traction battery) ................. 476
Malfunction indicator lamp .... 471
Open door ............................. 476
Parking lock system .............. 473
P position request ................. 475
Pre-crash safety system ....... 472
Radar cruise control.............. 474
Seat belt warning light .......... 477
Slip indicator ......................... 472
Smart entry & start system ... 479
SRS airbags.......................... 471
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