2012 TOYOTA PRIUS C engine coolant

442 5-2. Steps to take in an emergency
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 your Toyota dealer.
Warning messageDetails
Indicates a malfunction in the hybrid system
A buzzer sounds in accordance with the warning
message that is displayed.
Indicates that the high engine coolant tempera-
ture is too high
Indicates abnormal engine oil pressure
A buzzer also sounds.
The warning message is shown if the engine oil
pressure is too low.

5
When trouble arises
481
5-2. Steps to take in an emergency
After the hybrid system has
cooled down sufficiently, check
the engine coolant level and
inspect the cooling system for
leaks.
Add engine coolant if necessary.
Water can be used in an emer-
gency if engine coolant is unavail-
able. (
P. 494)
Have the vehicle inspected at the nearest Toyota dealer as soon as
possible.
STEP4
STEP5

5
When trouble arises
483
5-2. Steps to take in an emergency
■
Overheating
The following symptoms may occur when your vehicle is overheating:
●Hybrid system output decreases.
● Steam comes out 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 injuries such as burns.
● Check that on the multi-information display and the “READY” indi-
cator are off.
● For vehicles with a hybrid system, there are times when the gasoline
engine automatically 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
injury.
● Do not loosen the radiator cap while the hybrid system and radiator are
hot.
Serious injuries, such as burns, may result from hot coolant and steam
released under pressure.

484 5-2. Steps to take in an emergency
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.).
● When using coolant additives, use genuine Toyota products or equivalent.

494 6-1. Specifications
Oil viscosity (0W-20 is explained here as an example):
• The 0W in 0W-20 indicates the characteristic of the oil which allowscold startability. Oils with a lower value before the W allow for easier
starting of the engine in cold weather.
• The 20 in 0W-20 indicates the viscosity characteristic of the oil when the oil is at high temperature. An oil with a higher viscosity (one with a
higher value) may be better suited if the vehicle is operated at high
speeds, or under extreme load conditions.
How to read oil container label:
The ILSAC (International Lubricant Standardization and Approval
Committee) Certification Mark is added to some oil containers to help
you select the oil you should use.
Cooling system
Capacity Gasoline engine
Power control unit 5.6 qt. (5.3 L, 4.7 Imp. qt.)
1.7 qt. (1.6 L, 1.4 Imp. qt.)
Coolant type Use either of the following:
• “Toyota Super Long Life Coolant”
• A 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.

510 6-1. Specifications
Glossary of tire terminology
Tire related termMeaning
Cold tire inflation pres-
sure Tire pressure when the vehicle has been
parked for three hours or more, or has not
been driven more than 1 mile or 1.5 km under
that condition
Maximum inflation
pressure The maximum cold inflated
pressure to which a
tire may be inflated, s hown on the sidewall of
the tire
Recommended infla-
tion pressure Cold tire inflation pressure recommended by a
manufacturer
Accessory weight The combined weight (in excess of those stan-
dard items which may be replaced) of hybrid
transmission, power steering, power brakes,
power windows, power seats, radio and heater,
to the extent that these items are available as
factory-installed equipment (whether installed
or not)
Curb weight The weight of a motor vehicle with standard
equipment, including the maximum capacity of
fuel, oil and coolant, and if so equipped, air
conditioning and additional weight optional
engine
Maximum loaded vehi-
cle weight The sum of:
(a) Curb weight
(b) Accessory weight
(c) Vehicle capacity weight
(d) Production options weight
Normal occupant
weight 150 lb. (68 kg) times the number of occupants
specified in the second co
lumn of Table 1* that
follows
Occupant distribution Distribution of occupants in a vehicle as speci-
fied in the third column of Table 1* below

542 Alphabetical index
DoorsBack door ................................71
Door lock ..................... 47, 61, 65
Door windows..........................98
Rear door child protector.........67
Side doors ...............................65
Side mirrors .............................96
Driver’s seat belt reminder
light ......................................... 433
Driving Break-in tips .......................... 149
Correct posture ..................... 113
Procedures ............................ 148
Winter driving tips.................. 229
Eco drive mode ........................ 174
Electric power steering ........... 219
Electronic key If the electronic key does
not operate properly............ 473
Emergency flashers Switch.................................... 424
Emergency, in case of If a warning buzzer sounds ................................ 431
If a warning light turns on ............................... 431
If a warning message is
displayed............................. 441
If the electronic key does not operate properly............ 473
If the hybrid system will not start ............................... 469
If the shift lever cannot
be shifted from P................. 471
If the vehicle becomes stuck ................................... 485
If the vehicle 12-volt battery is discharged........... 475 If you have a flat tire ............. 457
If you lose your keys ............. 472
If you think something is
wrong .................................. 430
If your vehicle has to
be stopped in an
emergency .......................... 486
If your vehicle needs to
be towed ............................. 425
If your vehicle overheats ....... 480
Engine
Compartment ........................ 364
Engine switch ................ 158, 162
Hood ..................................... 360
How to start the hybrid system ........................ 158, 162
Identification number............. 491
If the hybrid system will
not start............................... 469
Ignition switch ............... 158, 162
Overheating .......................... 480
“POWER” switch ................... 162
Engine coolant
Capacity ................................ 494
Checking ............................... 369
Preparing and checking before winter ....................... 229
E

543
Alphabetical index
Engine oil
Capacity ............................... 493
Checking .............................. 365
Preparing and checking before winter ...................... 229
Engine/power control unit coolantCapacity ............................... 494
Checking .............................. 369
Preparing and checking before winter ...................... 229
Engine switch .................. 158, 162
EPS ........................................... 219
EV drive mode ......................... 170
Event data recorder .................. 18
Floor mat .................................. 337
Fluid Brake .................................... 497
Washer ................................. 374
Fog lights Replacing light bulbs ............ 411
Switch ................................... 206
Wattage ................................ 499
Front fog lights
Replacing light bulbs ............ 411
Switch ................................... 206
Wattage ................................ 499
Front passenger occupant classification system............ 129 Front passenger’s seat
belt reminder light .................433
Front seats Adjustment ..............................76
Front side marker lights
Replacing light bulbs .............411
Switch....................................202
Wattage .................................499
Front turn signal lights Replacing light bulbs .............411
Switch....................................176
Wattage .................................499
Fuel Capacity ................................492
Fuel gauge ............................179
Gas station information .........552
Information ............................500
Refueling ...............................105
Type ......................................492
Fuel door...................................105
Fuel filler door ..........................105
Fuses.........................................400
Gas station information...........552
Gauges ......................................179
Glove box..................................322
Hazard lights
Switch....................................424
Head restraints
Adjusting ................................81
Headlights Replacing light bulbs .............411
Switch....................................202
Wattage .................................499
F
G
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