2021 TOYOTA PRIUS coolant

6607-2. Steps to take in an emergency
PRIUS_OM_OM47E09U_(U)
NOTICE
■When adding engine/power control unit coolant
Add coolant slowly after the hybrid system has cooled down suff iciently.
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 sa nd or dust
etc.).
● Do not use any coolant additive.

670
PRIUS_OM_OM47E09U_(U)
8-1. Specifications
*: The coolant capacity is a reference quantity.If replacement is necessary, contact your Toyota dealer.
Cooling system
Capacity*
Gasoline
engine6.6 qt. (6.2 L, 5.5 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-CY9
Gap0.035 in. (0.9 mm)
NOTICE
■ Iridium-tipped spark plugs
Use only iridium-tipped spark plugs. Do not adjust the spark pl ug gap.
Electrical system (12-volt battery)
Open voltage at 68F (20 C):
12.0 V or higher
If the voltage is lower than the standard
value, charge the battery. (After charging
the battery, turn on the high beam head-
lights for 30 seconds with the power switch
off, and turn the headlights off.)
Charging rates5 A max.

684
PRIUS_OM_OM47E09U_(U)
8-1. Specifications
Glossary of tire terminology
Tire related termMeaning
Cold tire inflation
pressure
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
pressureThe maximum cold inflated pressure to which
a tire may be inflated, shown on the sidewall
of the tire
Recommended
inflation pressureCold 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 avail-
able 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
vehicle weight
The sum of:
(a) Curb weight
(b) Accessory weight
(c) Vehicle capacity weight
(d) Production options weight
Normal occupant
weight150 lb. (68 kg) times the number of occupants
specified in the second column of Table 1
*
that follows
Occupant distributionDistribution of occupants in a vehicle as speci-
fied in the third column of Table 1
* below

727Alphabetical index
PRIUS_OM_OM47E09U_(U)
CleaningAluminum wheels.................. 497
Exterior ................................. 496
Front camera ........................ 291
Hybrid battery (traction
battery) air intake vent ........ 551
Interior................................... 502
Radar sensor ........................ 290
Seat belts .............................. 503
Water-repellent coating......... 497
Clock ........................................... 98
Adjustment ............................ 103
Coat hooks ............................... 486
Combination meter .................... 98 Clock adjustment .................. 103
Main display .......................... 115
Multi-information display ....... 124
Warning lights and indicators ............................ 107
Condenser ................................ 524
Console box ............................. 462
Consumption screen ....... 165, 172
Coolant ..................................... 522
Capacity ................................ 670
Checking ............................... 522
Preparing and checking before winter....................... 430
Cooling system ........................ 522 Engine overheating ............... 656
Hybrid system overheating ... 658
Cruise control Cruise control........................ 342
Dynamic radar cruise control with full-speed range .......... 326
Cup holders.............................. 463
Curtain shield airbags ............... 35
Customizable features ............ 690 Daytime running light
system.................................... 266
Deck board ............................... 467
Defogger Outside rear view
mirrors ........................ 440, 450
Rear window ................. 440, 450
Windshield .................... 440, 450
Dimension ................................ 664
Dinghy towing.......................... 244
Display BSM (Blind Spot Monitor) ..... 349
Drive information .................. 126
Dynamic radar cruise control with full-speed range .......... 326
Energy monitor ..... 127, 165, 172
Head-up display.................... 158
Intuitive parking assist .......... 363
LTA (Lane Tracing Assist) .... 316
Main display.......................... 115
Multi-information display ....... 124
Parking Support Brake function............................... 379
RCTA detection screen ........ 349
RSA (Road Sign Assist) ....... 323
S-APGS (Simple Advanced Parking Guidance
System) .............................. 390
Pre-collision warning ............ 297
Trip information..................... 119
Warning messages ............... 603
Do-it-yourself maintenance .... 512
Door courtesy lights ............... 458 Location ................................ 458
Wattage ................................ 674D
*: Refer to “MULTIMEDIA OWNER’S MANUAL”.

729Alphabetical index
PRIUS_OM_OM47E09U_(U)
Engine....................................... 666Accessory mode ................... 247
Compartment ........................ 518
Engine switch (power switch) ................................ 245
Exhaust gas precautions ........ 54
Hood ..................................... 515
How to start the hybrid system ......... ....................... 245
Identification number ............ 666
If the hybrid system will not start .............................. 645
If your vehicle has to be stopped in an emergency ... 581
Ignition switch (power switch) ................................ 245
Overheating .......................... 656
Power switch......................... 245
Engine coolant ......................... 522 Capacity ................................ 670
Checking ............................... 522
Preparing and checking before winter....................... 430
Engine oil ................................. 519 Capacity ................................ 668
Checking ............................... 519
Oil pressure warning light ..... 592
Preparing and checking before winter....................... 430
Engine switch (power
switch) .................................... 245 Auto power off function ......... 247
Automatic hybrid system shut off feature ........................... 249
Changing the power switch modes................................. 247
If your vehicle has to be stopped in an emergency ... 581
Starting the hybrid system .... 245 EPS (Electronic Power
Steering) ................................ 421
Function ................................ 421
Warning light......................... 593
EV drive mode ......................... 252
EV indicator ............................. 129
Event data recorder (EDR)........ 11
Exhaust gas precautions .......... 54
Flat tire ............................. 611, 631
Floor mat .................................... 26
Fluid Brake .................................... 671
Transmission ........................ 671
Washer ................................. 530
Fog lights ................................. 273
Replacing light bulbs ............ 577
Switch ................................... 273
Footwell lights ......................... 458
Front camera............................ 289
Front doors .............................. 185
Front fog lights ........................ 273
Replacing light bulbs ............ 577
Switch ................................... 273
Front passenger occupant classification system .............. 49
Front passenger’s seat belt reminder light ........................ 595
Front seat concentrated
airflow mode
(S-FLOW) ....................... 438, 448
Front seats ............................... 204
Adjustment............................ 204
Cleaning ............................... 502
Correct driving posture ........... 28
Head restraints ..................... 209
Seat heaters ......................... 456
Front side marker lights ......... 263
Light switch ........................... 263
Replacing light bulbs ............ 571
Wattage ................................ 674
F

730Alphabetical index
PRIUS_OM_OM47E09U_(U)
Front turn signal lights ........... 261Replacing light bulbs............. 577
Turn signal lever ................... 261
Fuel ........................................... 675 Capacity ................................ 667
Fuel gauge ............................ 116
Information ............................ 675
Refueling............................... 283
Type ...................................... 667
Warning light ......................... 594
Fuel consumption............ 133, 170
Fuel filler door.......................... 283
Opener .................................. 285
Refueling............................... 283
When the fuel filler door cannot be opened............... 286
Fuses ........................................ 563
Garage door opener ................ 488
Glove box ................................. 462
Hands-free system (for
cellular phone)
*
Head restraints ........................ 209
Head-up display ....................... 158
Headlights ................................ 263 AHB (Automatic High Beam) ................................. 268
Headlight aim ................ 566, 716
Light switch ........................... 263
Replacing light bulbs............. 577
Heated steering wheel............. 456
Heaters Automatic air conditioning
system ....... ................. 436, 446
Heated steering wheel .......... 456
Outside rear view mirrors ........................ 440, 450
Seat heaters ......................... 456 High coolant temperature
warning light.......................... 594
High mounted stoplight Replacing.............................. 577
High-voltage components ........ 88
Hill-start assist control ........... 421
Hood ......................................... 515
Hooks
Cargo hooks ......................... 468
Coat hooks ........................... 486
Grocery bag hook ................. 469
Retaining hooks (floor mat) .... 26
Horn .......................................... 212
Hybrid battery (tr action battery)
Air intake vent ......................... 89
Location .................................. 88
Specification ......................... 667
Hybrid battery (traction battery) air intake vent............ 89 Cleaning ............................... 551
Hybrid system............................ 84 Brake Override System ........ 229
Drive-Start Control ................ 230
Emergency shut off system .... 89
Energy monitor/consumption
screen ................ 127, 165, 172
EV drive mode ...................... 252
High voltage components ....... 88
Hybrid System Indicator ....... 129
Hybrid system precautions ..... 88
Hybrid vehicle driving tips ..... 427
If the hybrid system will not start .................................... 645
Overheating .......................... 656
Power switch ........................ 245
Regenerative braking ............. 86
Starting the hybrid system .... 245
Vehicle proximity notification system .......... ..................... ... 85
Hybrid System Indicator ......... 129
Hybrid transmission................ 255
G
H

734Alphabetical index
PRIUS_OM_OM47E09U_(U)
Personal lights ......................... 458Switch ................................... 459
Wattage ................................ 674
Power control unit coolant ..... 522 Capacity ................................ 670
Checking ............................... 522
Preparing and checking before winter....................... 430
Radiator ................................ 524
Power outlets ........................... 474
Power steering (Electric Power Steering) ..................... 421 Function ................................ 421
Warning light ......................... 593
Power switch............................ 245 Auto power off function ......... 247
Automatic hybrid system shut off feature ........................... 249
Changing the power switch modes................................. 247
If your vehicle has to be stopped in an emergency ... 581
Starting the hybrid system .... 245
Power windows........................ 218 Catch protection function ...... 219
Door lock linked window operation ............................ 220
Jam protection function......... 219
Operation .............................. 218
Window lock switch............... 218
Pre-Collision System (PCS) .... 296 Enabling/disabling the system ......... ....................... 300
Function ................................ 296
Warning light ......................... 593
Radar cruise control Dynamic radar cruise control
with full-speed range .......... 326
Radiator .................................... 524
Radio
*
RCTA (Rear Cross Traffic Alert)....................................... 357
Blind Spot Monitor function............................... 354
Rear Cross Traffic Alert
function............................... 357
Rear Cross Traffic Alert (RCTA).................................... 357
Blind Spot Monitor function............................... 354
Rear Cross Traffic Alert
function............................... 357
Rear passengers’ seat belt reminder light ........................ 595
Rear seat .................................. 206
Rear side marker lights........... 263 Light switch ........................... 263
Replacing light bulbs ............ 572
Wattage ................................ 674
Rear turn signal lights ............ 261
Replacing light bulbs ............ 572
Turn signal lever ................... 261
Wattage ................................ 674
Rear view mirror Inside rear view mirror .......... 214
Outside rear view mirrors ..... 216
Rear view monitor system
*
Rear window defogger .... 440, 450
Rear window wiper .................. 281
Refueling .................................. 283
Capacity................................ 667
Fuel types ............................. 667
Opening the fuel tank cap..... 285
When the fuel filler door cannot be opened .............. 286
Regenerative braking ................ 86
Replacing
Electronic key battery ........... 560
Fuses .................................... 563
Light bulbs ............................ 568
Tires...................................... 631
Wiper insert .......................... 556
Reporting safety defects for U.S. owners...................... 704
R

739Alphabetical index
PRIUS_OM_OM47E09U_(U)
Warning lights.......................... 107ABS....................................... 593
Brake Override System......... 596
Brake system ....... ................. 592
Charging system ................... 592
Drive-Start Control ................ 596
Driver’s seat belt reminder light ..................................... 595
Electronic engine control system ......... ....................... 592
Electric power steering
system ......... ....................... 593
Front passenger’s seat belt reminder light...................... 595
High coolant temperature ..... 594
Low engine oil pressure ........ 592
Low fuel level ........................ 594
Malfunction indicator lamp .... 592
Master warning light.............. 595
Open door ............................. 594
Parking Support Brake function ............................... 596
PCS ...................................... 593
PKSB OFF indicator ............. 594
Rear passengers’ seat belt
reminder light...................... 595
Seat belt reminder light ......... 595
Slip indicator ......................... 594
SRS ...................................... 593
Tire pressure......................... 595 Warning messages.................. 603
Warning reflector storage
space ...................................... 470
Washer ............................. 275, 281 Checking............................... 530
Preparing and checking
before winter ...................... 430
Switch ........................... 275, 281
Washing and waxing ............... 496
Water-repellent coating .......... 497
Weights .................................... 664 Cargo capacity...................... 242
Load limits ............................ 664
Wheels ...................................... 545
Replacing wheels ................. 631
Size....................................... 672
Window glasses ...................... 218
Window lock switch ................ 218
Windows Power windows..................... 218
Rear window
defogger ..................... 440, 450
Washer ......................... 275, 281
Windshield wipers ................... 275 Handling the wiper arms ....... 501
Rain-sensing windshield wipers ................................. 277
Replacing the wiper insert .... 556
Winter driving tips ................... 430
Wiper insert replacement ....... 556
Wireless charger ..................... 477
Wireless remote control ......... 180 Battery-Saving Function ....... 198
Locking/Unlocking ................ 186
Panic mode........................... 181
Replacing the battery............ 560
WMA disc
*1
*1: Refer to “MULTIMEDIA OWNER’S MANUAL”.
*2: Refer to “NAVIGATION S YSTEM OWNER’S MANUAL”.