2023 TOYOTA PRIUS engine

6628-1. Specifications
PRIUS_OM_OM47F32E_(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
engine
Without exhaust heat recirculator system
5.6 L (5.9 qt., 4.9 Imp.qt.)
With exhaust heat recirculator system
6.2 L (6.6 qt., 5.5 Imp.qt.)
Power
control unit1.4 L (1.5 qt., 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
Gap0.9 mm (0.035 in.)
NOTICE
■ Iridium-tipped spark plugs
Use only iridium-tipped spark plugs. Do not adjust the spark plug gap.

6688-1. Specifications
PRIUS_OM_OM47F32E_(EE)
Fuel infor mation
■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 (except Russia):
You must only use unleaded gasoline.
Select unleaded gasoline with a Research Octane Number of 95
or higher for optimum engine performance.
Except EU area (Russia):
You must only use unleaded gasoline.
Select unleaded gasoline with a Research Octane Number of 91
or higher for optimum engine performance.

6698-1. Specifications
PRIUS_OM_OM47F32E_(EE)
8
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.

688Alphabetical index
PRIUS_OM_OM47F32E_(EE)
Care ................................... 496, 502
Aluminum wheels .................. 497
Exterior.................................. 496
Front camera......................... 285
Interior ................................... 502
Radar sensor ........................ 284
Seat belts .............................. 503
Water-repellent coating ......... 497
Cargo hooks ............................. 480
Catch protection function ....... 211
Chains ....................................... 453
Child restraint system ............... 54
Child restraint system
installation method................ 67
Fixed with a seat belt .............. 68
Fixed with an ISOFIX lower
anchorage............................. 70
Points to remember................. 54
Riding with children ................. 53
Using a top tether
anchorage............................. 72
Child safety ................................ 53
12-volt battery precautions.... 524
Airbag precautions .................. 41
Back door precautions .......... 184
Child restraint system ............. 54
How your child should wear
the seat belt .......................... 36
Installing child restraints.......... 67
Moon roof precautions .......... 218
Power window lock switch .... 210
Power window precautions ... 213
Rear door child-protectors .... 180
Removed key battery
precautions ......................... 556
Riding with children ................. 53
Seat belt precautions .............. 69
Seat heater precautions ........ 468Child-protectors....................... 180
Cleaning ........................... 496, 502
Aluminum wheels.................. 497
Exterior ................................. 496
Front camera ........................ 285
Hybrid battery (traction
battery) air intake vent ........ 545
Interior................................... 502
Radar sensor ........................ 284
Seat belts .............................. 503
Water-repellent coating......... 497
Clock ......................................... 100
Adjustment ............................ 106
Coat hooks ............................... 493
Combination meter .................. 100
Clock adjustment .................. 106
Main display .......................... 117
Multi-information display ....... 127
Warning lights and
indicators ............................ 110
Condenser ................................ 520
Console box ............................. 474
Coolant ..................................... 518
Capacity ................................ 662
Checking ............................... 518
Preparing and checking
before winter....................... 452
Cooling system ........................ 518
Engine overheating ............... 645
Hybrid system overheating ... 647
Consumption screen ............... 166
Cruise control
Cruise control........................ 346
Dynamic radar cruise control
with full-speed range .......... 329
Cup holders.............................. 475
Curtain shield airbags ............... 39
Customizable features ............ 670
C

690Alphabetical index
PRIUS_OM_OM47F32E_(EE)
ECB (Electronically
Controlled Brake System) .... 441
Eco drive mode ........................ 351
Electric motor (traction motor)
Location .................................. 79
Specification.......................... 657
Electric Power Steering
(EPS) ....................................... 442
Function ................................ 442
Warning light ......................... 581
Electronic key .......................... 172
Battery-saving function ......... 189
If the electronic key does not
operate properly ................. 636
Replacing the battery ............ 554
Electronically Controlled
Brake System (ECB).............. 441
Emergency brake signal ......... 442
Emergency flashers................. 568
Emergency brake signal ....... 442
Emergency tire puncture
repair kit ................................. 602
Emergency, in case of
If a warning buzzer sounds ... 580
If a warning light turns on ...... 580
If a warning message is
displayed ............................ 589
If the 12-volt battery is
discharged .......................... 639
If the electronic key does not
operate properly ................. 636
If the hybrid system will not
start..................................... 634
If the vehicle becomes
stuck ................................... 650
If the vehicle is submerged or
water on the road is
rising ................................... 570If you have a flat tire ..... 598, 618
If you lose your keys ..... 173, 176
If you think something is
wrong.................................. 579
If your vehicle has to be
stopped in an emergency ... 569
If your vehicle needs to be
towed .................................. 572
If your vehicle overheats ....... 645
Energy monitor ................ 130, 166
Engine....................................... 656
Accessory mode ................... 246
Compartment ........................ 514
Engine switch (power
switch) ................................ 244
Exhaust gas precautions ........ 50
Hood ..................................... 511
How to start the hybrid
system ................................ 244
Identification number ............ 656
If the hybrid system will not
start .................................... 634
If your vehicle has to be
stopped in an emergency ... 569
Ignition switch (power
switch) ................................ 244
Overheating .......................... 645
Power switch......................... 244
Engine coolant ......................... 518
Capacity ................................ 662
Checking ............................... 518
Preparing and checking
before winter....................... 452
E

691Alphabetical index
PRIUS_OM_OM47F32E_(EE)
Engine oil.................................. 515
Capacity ................................ 658
Checking ............................... 515
Oil pressure warning light ..... 581
Preparing and checking
before winter....................... 452
Engine switch (power
switch) .................................... 244
Auto power off function ......... 246
Changing the power switch
modes................................. 246
If your vehicle has to be
stopped in an emergency ... 569
Starting the hybrid system .... 244
EPS (Electric Power
Steering) ................................. 442
Function ................................ 442
Warning light ......................... 581
ERA-GLONASS .......................... 74
EV drive mode .......................... 250
EV indicator .............................. 132
EVAK ........................................... 74
Exhaust gas precautions .......... 50
Extended Headlight
Lighting system ..................... 263First-aid kit storage space ...... 481
Flat tire.............................. 598, 618
Floor mat .................................... 30
Fluid
Brake .................................... 664
Transmission ........................ 663
Washer ................................. 526
Fog lights ................................. 270
Replacing light bulbs............. 565
Switch ................................... 270
Footwell lights ......................... 470
Front camera ............................ 283
Front doors .............................. 177
Front fog lights ........................ 270
Replacing light bulbs............. 565
Switch ................................... 270
Front passenger’s seat belt
reminder light ........................ 584
Front position lights ................ 261
Light switch ........................... 261
Replacing light bulbs............. 565
Front seat concentrated
airflow mode (S-FLOW) ........ 461
Front seats ............................... 194
Adjustment ............................ 194
Cleaning................................ 502
Correct driving posture ........... 32
Head restraints ..................... 199
Seat heaters ......................... 468
Front turn signal lights ........... 259
Replacing light bulbs............. 565
Turn signal lever ................... 259F

693Alphabetical index
PRIUS_OM_OM47F32E_(EE)
Identification ............................ 655
Engine ................................... 656
Vehicle .................................. 655
Ignition switch (power
switch) .................................... 244
Auto power off function ......... 246
Changing the power switch
modes................................. 246
If your vehicle has to be
stopped in an emergency ... 569
Starting the hybrid system .... 244
Illuminated entry system......... 472
Immobilizer system ................... 91
Indicators.................................. 110
Initialization .............................. 679
Items to initialize ................... 679
Moon roof .............................. 217
Parking Support Brake
function ............................... 402
Power windows ..................... 211
S-IPA (Simple Intelligent
Parking Assist System)....... 430
Tire pressure warning
system ................................ 531
Inside rear view mirror ............ 205
Instrument cluster light
control .................................... 102
Interior lights ............................ 470
Switch ........................... 471, 472
Wattage................................. 667
Intrusion sensor......................... 96
ISOFIX lower anchorages ......... 70Jack
Positioning a floor jack .......... 513
Vehicle-equipped jack... 600, 619
Jack handle ...................... 600, 619
Jam protection function
Moon roof.............................. 216
Power windows ..................... 211
Keyless entry ........................... 177
Smart entry & start system ... 187
Wireless remote control ........ 177
Keys .......................................... 172
Battery-saving function ......... 189
Electronic key ....................... 172
Engine switch (power
switch) ................................ 244
If the electronic key does not
operate properly ................. 636
If you lose your keys ..... 173, 176
Key number plate.................. 172
Keyless entry ........................ 177
Mechanical key ..................... 173
Power switch......................... 244
Replacing the battery ............ 554
Smart entry & start system ... 187
Warning buzzer..................... 188
Wireless remote control ........ 177
Knee airbag ................................ 39
IJ
K
*: Refer to “Navigation and multimedia system Owner’s manual”.

695Alphabetical index
PRIUS_OM_OM47F32E_(EE)
Multi-information display ........ 127
Air conditioning system
settings screen ................... 148
Audio system-linked
display ................................ 147
Display contents.................... 127
Drive information ................... 129
Driving assist system
information .......................... 152
Dynamic radar cruise control
with full-speed range .......... 329
Energy monitor...................... 130
Language .............................. 156
LTA (Lane Tracing Assist) .... 316
Parking Support Brake
function ............................... 400
Pre-collision warning ............. 297
RCTA detection screen ......... 356
RSA (Road Sign Assist) ........ 324
S-IPA (Simple Intelligent
Parking Assist System)....... 409
Settings display ..................... 153
Toyota parking
assist-sensor ...................... 382
Warning message display ..... 152
Multimedia system
*
Navigation system*
Odometer.................................. 121
Oil
Engine oil .............................. 658
Opener
Back door.............................. 182
Fuel filler door ....................... 279
Hood ..................................... 511
Outside rear view mirrors ....... 207
Adjustment ............................ 207
BSM (Blind Spot Monitor) ..... 356
Folding .................................. 207
Outside rear view mirror
defoggers ........................... 463
Outside temperature
display ............................ 118, 120
Overhead console ................... 477
Overheating.............................. 645
N
O
*: Refer to “Navigation and multimedia system Owner’s manual”.