2017 TOYOTA PRIUS cooling

7188-2. Steps to take in an emergency
PRIUS_OM_OM47B54U_(U)
NOTICE
■When adding engine/power control unit coolant
Add coolant slowly after the hybrid system has cooled down sufficiently.
Adding cool coolant to a hot hybrid system 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 additive.

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PRIUS_OM_OM47B54U_(U)
9-1. Specifications
*: The coolant capacity is a reference quantity.If replacement is necessary, contact your Toyota dealer.
Cooling system
Capacity*
Gasoline
engine6.3 qt. (6.0 L, 5.3 Imp.qt.)
Power
control unit1.5 qt. (1.4 L, 1.2 Imp.qt.)
Coolant type
Use 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.
Ignition system (spark plug)
MakeDENSO FC16HR-C9
Gap0.035 in. (0.9 mm)
NOTICE
■ Iridium-tipped spark plugs
Use only iridium-tipped spark plugs. Do not adjust the spark plug gap.
Electrical system (12-volt battery)
Open voltage at 68 °F (20 °C):
12.5 V or higher: Fully charged
11.0 — 12.4 V: Half charged
10.9 V or lower: Discharged
(Voltage is checked 30 seconds after the
hybrid system and all lights are turned off.)
Charging rates5 A max.

781Alphabetical index
PRIUS_OM_OM47B54U_(U)
Child-protectors....................... 168
CleaningAluminum wheels.................. 567
Camera sensor ..................... 271
Exterior ................................. 566
Interior................................... 572
Radar sensor ........................ 270
Seat belts .............................. 574
Water-repellent coating......... 567
Coat hooks ............................... 550
Combination meter .................... 92 Clock adjustment .................... 97
Main display .......................... 107
Multi-information display ....... 114
Warning lights and indicators ............................ 100
Condenser ................................ 596
Console box ............................. 527
Coolant Capacity ................................ 728
Checking ............................... 594
Preparing and checking before winter....................... 412
Cooling system ........................ 594 Hybrid system overheating......................... 714
Consumption screen ............... 153
Cruise control
Cruise control........................ 313
Dynamic radar cruise control with full-speed
range .................................. 298
Cup holders.............................. 528
Curtain shield airbags ............... 36
Customizable features ............ 748 Daytime running light
system.................................... 245
Deck board ............................... 531
Defogger Outside rear view mirrors ..... 515
Rear window ......................... 515
Windshield ............................ 515
Dimension ................................ 722
Dinghy towing.......................... 224
Display BSM (Blind Spot Monitor) ..... 320
Drive information .................. 116
Dynamic radar cruise control with full-speed range .......... 298
Energy monitor ............. 117, 153
Head-up display.................... 146
LDA (Lane Departure Alert with steering control) .......... 292
Multi-information display ....... 114
Parking assist system ....... ................. 334, 361
Pre-collision warning ............ 275
Trip information..................... 109
Warning messages ............... 663
Do-it-yourself maintenance .... 584
Door courtesy lights ............... 523 Location ................................ 523
Wattage ................................ 732D