engine TOYOTA PRIUS C 2020 Repair Manual

5409-1. Specifications
PRIUS c_U
Oil viscosity (0W-20 is explained here as an example):
• The 0W in 0W-20 indicates the characteristic of the oil which allows cold startability. Oils wi th a lower value before the W allow
for easier starting of the engine in cold weather.
• The 20 in 0W-20 indicates the vi scosity characteristic of the oil
when the oil is at high temperature. An oil with a higher visco sity
(one with a higher value) may be better suited if the vehicle i s
operated at high speeds, or un der extreme load conditions.
How to read oil container label:
The International Lubricant
Specification Advisory Commit-
tee (ILSAC) 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.

5459-1. Specifications
9
Vehicle specifications
PRIUS c_U
■Gasoline quality
In very few cases, driveability problems may be caused by the b rand of gaso-
line you are using. If driveability problems persist, try changing the brand of
gasoline. If this does not correct the problem, consult your To yota dealer.
■ Recommendation of the use of gaso line containing detergent additives
● Toyota recommends the use of gasoline that contains detergent a dditives to
avoid the build-up of engine deposits.
● All gasoline sold in the U.S.A. contains minimum detergent addi tives to
clean and/or keep clean intake systems, per EPA’s lowest additi ves concen-
tration program.
● Toyota strongly recommends the use of Top Tier Detergent Gasoli ne. For
more information on Top Tier Detergent Gasoline and a list of marketers,
please go to the official website www.toptiergas.com.
■ Recommendation of the use of low emissions gasoline
Gasolines containing oxygenates such as ethers and ethanol, as well as
reformulated gasolines, are available in some cities. These fue ls are typically
acceptable for use, providing they meet other fuel requirements .
Toyota recommends these fuels, since the formulations allow for reduced
vehicle emissions.
Fuel information
You must only use unleaded gasoline.
Select octane rating 87 (Research Octane Number 91) or higher.
Use of unleaded gasoline with an octane rating lower than 87
may result in engine knocking. Persistent knocking can lead to
engine damage.
At minimum, the gasoline you use should meet the specifications of
ASTM D4814 in the U.S.A..

5469-1. Specifications
PRIUS c_U■
Non-recommendation of the use of blended gasoline
●If you use gasohol in your vehicle, be sure that it has an octa ne rating no
lower than 87.
● Toyota does not recommend the use of gasoline containing methan ol.
■ Non-recommendation of the use of gasoline containing MMT
Some gasoline contains an octane enhancing additive called MMT (Methylcy-
clopentadienyl Manganese Tricarbonyl).
Toyota does not recommend the use of gasoline that contains MMT. If fuel
containing MMT is used, your emission control system may be adversely
affected.
The malfunction indicator lamp on the instrument cluster may come on. If this
happens, contact your Toyota dealer for service.
■ If your engine knocks
●Consult your Toyota dealer.
● You may occasionally notice light knocking for a short time whi le accelerat-
ing or driving uphill. This is normal and there is no need for concern.
●
Use only gasoline containing up to 15%
ethanol.
DO NOT use any flex-fuel or gasoline
that could contain more than 15% etha-
nol, including from any pump labeled
E30, E50, E85 (which are only some
examples of fuel containing more than
15% ethanol).
DO NOT use gasoline contain-
ing more than 15% ethanol.
(30% ethanol)
(50% ethanol)
(85% ethanol)

5479-1. Specifications
9
Vehicle specifications
PRIUS c_U
NOTICE
■Notice on fuel quality
● Do not use improper fuels. If improper fuels are used, the engi ne will be
damaged.
● Do not use leaded gasoline.
Leaded gasoline can cause damage to your vehicle’s three-way ca talytic
converters causing the emission control system to malfunction.
● Do not use gasohol other than the type previously stated.
Other gasohol may cause fuel system damage or vehicle performan ce
problems.
● Using unleaded gasoline with an octane number or rating lower than the
level previously stated will cause persistent heavy knocking.
At worst, this will lead to engine damage.
■ Fuel-related poor driveability
If poor driveability (poor hot starting, vaporization, engine k nocking, etc.) is
encountered after using a different type of fuel, discontinue the use of that
type of fuel.
■ When refueling with gasohol
Take care not to spill gasohol. It can damage your vehicle's paint.

5559-1. Specifications
9
Vehicle specifications
PRIUS c_U
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 infla
ted pressure to which
a tire may be inflated, shown 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 avail-
able as factory-insta
lled equipment (whether
installed or not)
Curb weight The weight of a motor vehicle with standard
equipment, including th
e 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 column of Table 1
* that
follows
Occupant distribution Distribution of o
ccupants in a vehicle as speci-
fied in the third column of Table 1
* below
Production options
weight The combined weight of installed regular pro-
duction options weighing over 5 lb. (2.3 kg) in
excess of the standard items which they
replace, not previously considered in curb
weight or accessory weight, including heavy
duty brakes, ride levelers, roof rack, heavy
duty battery, and special trim

590Alphabetical index
PRIUS c_U
Eco drive mode ........................ 203
Electric power steering ........... 265
Electronic keyIf the electronic key does not operate properly ........... 520
Emergency flashers Switch ................................... 468
Emergency, in case of
If a warning buzzer sounds ........................ 480, 488
If a warning light
turns on .............................. 480
If a warning message is displayed ............................ 488
If the electronic key does not operate properly ........... 520
If the hybrid system will
not start .............................. 518
If the vehicle becomes stuck ................................... 533
If the vehicle 12-volt battery is discharged .......... 522
If the vehicle is trapped
in rising water ..................... 471
If you have a flat tire ............ 505
If you lose your keys ............. 122
If you think something is wrong.................................. 479
If your vehicle has to be stopped in an
emergency.......................... 469
If your vehicle needs to be towed ............................. 472
If your vehicle overheats ....... 529 Engine
Compartment ........................ 422
Hood ..................................... 419
How to start the hybrid system ....... ................. 188, 192
Identification number ............ 537
If the hybrid system will not start .............................. 518
Ignition switch ............... 188, 192
Overheating .......................... 529
Power switch ................ 188, 192
Engine coolant Capacity................................ 540
Checking............................... 426
Preparing and checking before winter ...................... 274
Engine oil
Capacity................................ 539
Checking............................... 423
Preparing and checking before winter ...................... 274
Engine/power control unit coolant
Capacity................................ 540
Checking............................... 426
Preparing and checking before winter ...................... 274
EPS ........................................... 265
EV drive mode ......................... 199
Event data recorder................... 11
Exclusive jump starting terminal .................... 522
E

592Alphabetical index
PRIUS c_U
Gauges ....................................... 99
Glove box ................................. 389
Hazard lightsSwitch ................................... 468
Head restraints Adjusting .............................. 155
Headlights Replacing light bulbs............. 464
Switch ................................... 208
Heaters Seat heaters ......................... 384
Side mirrors .......................... 378
Hill-start assist control............ 265
Hood ......................................... 419
Horn .......................................... 158
Hybrid system Acoustic Vehicle Alerting System ................................. 77
Emergency shut off system .... 82
Energy monitor/ consumption screen ........... 112
High voltage components ....... 81
Hybrid system indicator ........ 110
Power switch......................... 192 I/M test ...................................... 415
Identification
Engine .................................. 538
Tire ....................................... 548
Vehicle .................................. 537
Ignition switch ................. 188, 192
Illuminated entry system ........ 387
Immobilizer system ................... 88
Indicator lights........................... 94
Initialization Items to initialize ................... 565
Inside rear view mirror ............ 160
Interior lights Switch ................................... 386
Wattage ................................ 544
iPod........................................... 306
Jack Positioning a floor jack.......... 421
Vehicle-equipped jack .......... 506
Jack handle .............................. 506
G
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594Alphabetical index
PRIUS c_U
MaintenanceDo-it-yourself
maintenance ....................... 416
Emission inspection and maintenance (I/M)
programs ............................ 415
General maintenance ........... 412
Maintenance data ................. 536
Maintenance requirements ... 409
Meter Instrument panel light
control................................. 101
Meters ..................................... 99
Microphone .............................. 333
Mirrors
Inside rear view mirror .......... 160
Outside rear view mirror defogger ............................. 378
Outside rear view mirrors...... 161
Vanity mirrors........................ 393
Moon roof ................................. 167
MP3 disc ................................... 300
Multi-information display ........ 103
Navigation system
*
Noise from under vehicle............ 8 Odometer ................................. 100
Oil
Engine oil .............................. 539
Opener Back door ............................. 136
Fuel filler door ....................... 221
Hood ..................................... 419
Outside rear view mirrors
Adjusting and folding ............ 161
Defogger ............................... 378
Outside temperature
display.................................... 101
Overheating, Hybrid system.................................... 529
Parking brake........................... 207
Parking lights Replacing light bulbs ............ 460
Switch ................................... 208
Wattage ................................ 544
PCS (Pre-Collision system) .... 231 PCS (Pre-Collision
system) switch...... .............. 234
Warning light......................... 482
Personal lights Switch ................................... 386
Wattage ................................ 544
Power outlet ............................. 394
Power switch ................... 188, 192
Power windows ....................... 163
Pre-Collision system (PCS) .... 231 PCS (Pre-Collision
system) switch...... .............. 234
Warning light......................... 482
M
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600
PRIUS c_U
GAS STATION INFORMATION
Auxiliary catch leverFuel filler door
P. 419 P. 221
Hood lock release
leverFuel filler
door openerTire inflation pressure
P. 419 P. 221P. 543
Fuel tank capacity
(Reference)9.5 gal. (36 L, 7.9 Imp. gal.)
Fuel type
P. 538
Cold tire inflation
pressureP. 5 4 3
Engine oil capacity
(Drain and refill —
reference) P. 539
Engine oil type
“Toyota Genuine Motor Oil” or equivalent
P. 539