engine TOYOTA PRIUS PLUG-IN HYBRID 2020 Manual Online

7759-1. Specifications
Prius Plug-in Hybrid_OM_OM47D72E_(EE)
9
Vehicle specifications
Oil viscosity (0W-16 is explained here as an example):
• The 0W in 0W-16 indicates the characteristic of the oil which
allows cold startability. Oils with a lower value before the W allow
for easier starting of the engine in cold weather.
• The 16 in 0W-16 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 labels:
Either or both API registered marks are added to some oil contain-
ers to help you select the oil you should use.
API Service Symbol
Top portion: “API SERVICE SN”
means the oil quality designa-
tion by American Petroleum Ins-
titute (API).
Center portion: “SAE 0W-16”
means the SAE viscosity grade.
Lower portion: “Resource-
Conserving” means that the oil
has fuel-saving and environ-
mental protection capabilities.
ILSAC Certification Mark
The International Lubricant Specification Advisory Committee (ILSAC)
Certification Mark is displayed on the front of the container.
1
2

7769-1. Specifications
Prius Plug-in Hybrid_OM_OM47D72E_(EE)
*: The fluid capacity is the quantity of reference.
If replacement is necessary, contact any authorized Toyota retailer or
Toyota authorized repairer, or any reliable repairer.
Cooling system
Capacity*
Gasoline
engine6.2 L (6.6 qt., 5.5 Imp.qt.)
Power
control unit1.5 L (1.6 qt., 1.3 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
Gap0.9 mm (0.035 in.)
NOTICE
■ Iridium-tipped spark plugs
Use only iridium-tipped spark plugs. Do not adjust the spark plug gap.

7809-1. Specifications
Prius Plug-in Hybrid_OM_OM47D72E_(EE)
Fuel information
■Use of ethanol blended gasoline in a gasoline engine
Toyota allows the use of ethanol blended gasoline where the ethanol content
is up to 10%. Make sure that the ethanol blended gasoline to be used has a
Research Octane Number that follows the above.
■If your engine knocks
●Consult any authorized Toyota retailer or Toyota authorized repairer, or any
reliable repairer.
●You may occasionally notice light knocking for a short time while accelerat-
ing or driving uphill. This is normal and there is no need for concern.
When you find these types of fuel label at the gas station, use
only the fuel with one of the following labels.

EU area:
You must only use unleaded gasoline conforming to European
standard EN228.
Select unleaded gasoline with a Research Octane Number of 95
or higher for optimum engine performance.
Except EU area:
You must only use unleaded gasoline.
Select unleaded gasoline with a Research Octane Number of 95
or higher for optimum engine performance.

7819-1. Specifications
Prius Plug-in Hybrid_OM_OM47D72E_(EE)
9
Vehicle specifications
NOTICE
■ Notice on fuel quality
● Do not use improper fuels. If improper fuels are used, the engine will be
damaged.
● Do not use gasoline with metallic additives, for example manganese, iron
or lead, otherwise it may cause damage on your engine or emission con-
trol system.
● Do not add aftermarket fuel additives which contain metallic additives.
● EU area: Bioethanol fuel sold under names such as “E50” or “E85” and
fuel containing a large amount of ethanol should not be used. The use of
these fuels will damage the vehicle’s fuel system. In case of any doubt,
ask any authorized Toyota retailer or Toyota authorized repairer, or any
reliable repairer.
● Except EU area: Bioethanol fuel sold under names such as “E50” or “E85”
and fuel containing a large amount of ethanol should not be used. Your
vehicle can use gasoline mixed with 10% max ethanol. The use of fuel
with more than 10% ethanol content (E10) will damage the vehicle’s fuel
system. You must ensure that refueling is carried out only from a source
where fuel specification and quality can be guaranteed. In case of any
doubt, ask any authorized Toyota retailer or Toyota authorized repairer, or
any reliable repairer.
● Do not use the methanol blended gasoline such as M15, M85, M100.
The use of gasoline containing methanol may cause engine damage or
failure.
■ Notice about fuel
 P. 1 1 4

801Alphabetical index
Prius Plug-in Hybrid_OM_OM47D72E_(EE)
Child-protectors ....................... 286
Cleaning............................ 616, 622
Aluminum wheels .................. 617
Exterior.................................. 616
Front camera......................... 408
Hybrid battery (traction
battery) air intake vent ........ 623
Interior ................................... 622
Radar sensor ........................ 407
Seat belts .............................. 625
Water-repellent coating ......... 617
Clock ......................................... 204
Adjustment ............................ 210
Coat hooks ............................... 613
Combination meter .................. 204
Clock adjustment .................. 210
Main display .......................... 222
Multi-information display ....... 230
Warning lights and
indicators ............................ 214
Condenser ................................ 643
Console box ............................. 595
Consumption screen ............... 275
Coolant ..................................... 641
Capacity ................................ 776
Checking ............................... 641
Preparing and checking
before winter....................... 566
Cooling system ........................ 641
Engine overheating ............... 761
Hybrid system overheating ... 763
Cruise control
Dynamic radar cruise control
with full-speed range .......... 451
Cup holders .............................. 596
Curtain shield airbags ............... 39
Customizable features ............ 782Daytime running light
system .................................... 388
Deck board ............................... 600
Defogger
Outside rear view mirrors...... 577
Rear window ......................... 577
Windshield ............................ 577
Dimension ................................ 770
Display
Drive information................... 232
Dynamic radar cruise control
with full-speed range .......... 451
Energy monitor ............. 233, 272
Head-up display .................... 264
LTA (Lane Tracing Assist) .... 438
Main display .......................... 222
Multi-information display ....... 230
Parking Support Brake
function ............................... 516
Pre-collision warning............. 419
RCTA detection screen......... 473
RSA (Road Sign Assist)........ 446
S-IPA (Simple Intelligent
Parking Assist System) ...... 527
Toyota parking assist
sensor................................. 500
Warning messages ............... 723
Do-it-yourself maintenance .... 631
Door courtesy lights................ 591
Location ................................ 591
Wattage ................................ 779D

803Alphabetical index
Prius Plug-in Hybrid_OM_OM47D72E_(EE)
Emergency brake signal ......... 560
Emergency flashers................. 704
Emergency brake signal ....... 560
Emergency tire puncture
repair kit ................................. 731
Energy monitor ................ 233, 272
Engine
Accessory mode ................... 375
Compartment ........................ 637
Engine switch ........................ 373
Exhaust gas precautions......... 50
Hood ..................................... 634
How to start the hybrid
system ................................ 373
Identification number............. 772
If the hybrid system will not
start..................................... 749
If your vehicle has to be
stopped in an emergency ... 705
Ignition switch (power
switch) ................................ 373
Overheating .......................... 761
Power switch ......................... 373
Engine coolant ......................... 641
Capacity ................................ 776
Checking ............................... 641
Preparing and checking
before winter....................... 566Engine oil ................................. 638
Capacity ................................ 773
Checking ............................... 638
Oil pressure warning light ..... 715
Preparing and checking
before winter....................... 566
Engine switch (power
switch) .................................... 373
Auto power off function ......... 375
Changing the power switch
modes................................. 375
If your vehicle has to be
stopped in an emergency ... 705
Starting the hybrid system .... 373
EPS (Electronic Power
Steering)................................. 560
Function ................................ 560
Warning light ......................... 715
EV City mode switch ................. 98
EV driving range ...................... 119
EV mode ..................................... 95
EV/HV mode selection
switch ....................................... 98
Exhaust gas precautions .......... 50

805Alphabetical index
Prius Plug-in Hybrid_OM_OM47D72E_(EE)
Horn .......................................... 346
HV mode ..................................... 95
Hybrid battery (traction
battery) ................................... 108
Air intake vent ....................... 109
Charging ............................... 121
Location ................................ 108
Specification.......................... 773
Status indicator ..................... 123
Hybrid battery (traction
battery) air intake vent .......... 109
Cleaning ................................ 623
Hybrid system ............................ 94
Brake Override System ......... 360
Consumption screen ..... 244, 275
Drive-Start Control ................ 360
Emergency shut off system... 109
Energy monitor.............. 233, 272
High voltage components ..... 108
Hybrid System Indicator ........ 236
If the hybrid system will not
start..................................... 749
Overheating .......................... 761
Plug-in hybrid system
precautions ......................... 108
Plug-in hybrid vehicle driving
tips ...................................... 115
Power switch ......................... 373
Regenerative braking ............ 103
Starting the hybrid system .... 373
Vehicle proximity notification
system ................................ 103
Hybrid System Indicator ......... 236
Hybrid transmission ................ 379Identification ............................ 771
Engine................................... 772
Vehicle .................................. 771
Ignition switch (power
switch) .................................... 373
Auto power off function ......... 375
Changing the power switch
modes................................. 375
If your vehicle has to be
stopped in an emergency ... 705
Starting the hybrid system .... 373
Illuminated entry system ........ 593
Immobilizer system ................... 74
Indicators ................................. 214
Initialization .............................. 792
Items to initialize ................... 792
Parking Support Brake
function ............................... 520
Power windows ..................... 353
S-IPA (Simple Intelligent
Parking Assist System) ...... 548
Tire pressure warning
system ................................ 652
Inside rear view mirror ............ 348
Instrument cluster light
control .................................... 206
Interior lights............................ 591
Switch ........................... 592, 593
Wattage ................................ 779
Intrusion sensor ........................ 90
ISOFIX lower anchorages ......... 70I
*: Refer to “Navigation system Owner’s manual”.

806Alphabetical index
Prius Plug-in Hybrid_OM_OM47D72E_(EE)
Jack ........................................... 670
Positioning a floor jack .......... 636
Vehicle-equipped jack ........... 670
Jack handle .............................. 670
Jam protection function .......... 353
Keyless entry ........................... 283
Smart entry & start system.... 293
Wireless remote control ........ 283
Keys .......................................... 278
Battery-saving function ......... 295
Electronic key........................ 278
Engine switch ........................ 373
If the electronic key does not
operate properly ................. 751
If you lose your keys ..... 279, 282
Key number plate .................. 278
Keyless entry ........................ 283
Mechanical key ..................... 279
Power switch ......................... 373
Replacing the battery ............ 688
Smart entry & start system.... 293
Warning buzzer ..................... 294
Wireless remote control ........ 278
Knee airbags .............................. 39
Language (multi-information
display) ................................... 260Lever
Auxiliary catch lever .............. 634
Hood lock release lever ........ 634
Shift lever .............................. 379
Tilt and telescopic steering
lock release lever ............... 346
Turn signal lever ................... 385
Wiper lever............................ 398
License plate lights ................. 387
Light switch ........................... 387
Replacing light bulbs............. 700
Light
AHS (Adaptive High-beam
System) .............................. 391
Door courtesy lights .............. 591
Emergency flasher switch ..... 704
Fog light switch ..................... 397
Follow me home system ....... 388
Headlight switch.................... 387
Illuminated entry system ....... 593
Interior lights ................. 592, 593
Interior light list...................... 591
Luggage compartment
light..................................... 289
Personal lights ...................... 592
Replacing light bulbs............. 695
Shift lever light ...................... 591
Turn signal lever ................... 385
Vanity lights .......................... 605
Wattage ................................ 779
Light bulbs
Replacing .............................. 695
Wattage ................................ 779
LTA (Lane Tracing Assist) ...... 429
Luggage cover ......................... 603
J
K
L

808Alphabetical index
Prius Plug-in Hybrid_OM_OM47D72E_(EE)
Navigation system*
Odometer .................................. 224
Oil
Engine oil .............................. 773
Opener
Back door .............................. 288
Fuel filler door ....................... 403
Hood ..................................... 634
Outside rear view mirrors ....... 350
Adjustment ............................ 350
BSM (Blind Spot Monitor) ..... 473
Folding .................................. 350
Outside rear view mirror
defoggers............................ 577
Outside temperature
display .................................... 222
Overhead console.................... 598
Overheating .............................. 761
P position switch ..................... 380
Panoramic view monitor
*
Parking assist sensors
Parking Support Brake
function ............................... 510
S-IPA (Simple Intelligent
Parking Assist System)....... 523
Toyota parking
assist-sensor ...................... 499Parking brake ........................... 386
Operation .............................. 386
Parking brake engaged
warning buzzer ................... 386
Parking lock ............................. 380
Parking Support Brake
function .................................. 510
PCS (Pre-Collision System) .... 418
Enabling/disabling the
system ................................ 422
Function ................................ 418
Warning light ......................... 716
Personal lights ......................... 591
Switch ................................... 592
Wattage ................................ 779
Plug-in hybrid system ............... 94
Driving tips ............................ 115
EV City mode .......................... 95
EV driving range ................... 119
EV mode ................................. 95
EV/HV mode selection
switch ................................... 98
Features.................................. 94
How to charge....................... 165
HV mode ................................. 95
Hybrid battery (traction
battery) charge mode ........... 95
Power control unit coolant ..... 641
Capacity ................................ 776
Checking ............................... 641
Preparing and checking
before winter....................... 566
Radiator ................................ 643
N
O
P

811Alphabetical index
Prius Plug-in Hybrid_OM_OM47D72E_(EE)
Side turn signal lights ............. 385
Replacing light bulbs ............. 700
Turn signal lever ................... 385
Side windows ........................... 352
Water-repellent coating ......... 617
Simple Intelligent Parking
Assist System (S-IPA) ........... 523
Smart entry & start system ..... 293
Antenna location ................... 293
Entry functions ...................... 283
Starting the hybrid system .... 373
Smart lid & connector
locking system ...................... 140
Snow tires................................. 566
Solar charging system ............ 188
Spark plug ................................ 776
Specifications .......................... 770
Speech command system
*
Speed limiter ............................ 470
Speedometer ............................ 222
SRS airbags................................ 39
Steering wheel ......................... 346
Adjustment ............................ 346
Audio switches
*
Meter control switches .......... 205
Talk switch
*
Telephone switches*
TRIP switch ........................... 224
Stop lights
Replacing light bulbs ............. 700
Storage feature ........................ 594
Storage precautions ................ 594
Stuck
If the vehicle becomes
stuck ................................... 766
Sun visors ................................ 605Switch
AHS (Adaptive High-beam
System) switch ................... 392
Audio remote control
switches
*
Camera switch*
Charging schedule switch ..... 179
Cruise control switch............. 451
Door lock switches ................ 285
Driving mode select switch ... 468
Emergency flashers switch ... 704
Engine switch........................ 373
EV City mode switch ............... 98
EV/HV mode selection
switch ................................... 98
Fog light switch ..................... 397
Fuel filler door opener
switch ................................. 403
“HUD” (Head-up display)
switch ................................. 266
Ignition switch ....................... 373
Instrument cluster light
control switch...................... 206
LTA (Lane Tracing Assist)
switch ................................. 437
Light switch ........................... 387
Meter control switches .......... 205
Outside rear view mirror
switches.............................. 350
P position switch ................... 380
Power door lock switches ..... 285
Power switch......................... 373
Power window switch............ 352
*: Refer to “Navigation system Owner’s manual”.