TOYOTA PRIUS PRIME 2023 Owners Manual

6019-1. Specifications
9
Vehicle specifications
under the right-hand front seat.
This number is also on the Certi-
fication Regulation Label.■Engine number
The engine number is stamped
on the engine block as shown.
Engine
Model2.0 L 4-cylinder (M20A-FXS)
Type4-cylinder in line, 4-cycle, gasoline
Bore and stroke3.17  3.84 in. (80.5  97.6 mm)
Displacement121.3 cu.in. (1987 cm3)
Valve clearanceAutomatic adjustment
Fuel
Fuel typeUnleaded gasoline only
Octane Rating87 (Research Octane Number 91) or
higher
Fuel tank capacity (Reference)10.6 gal. (40 L, 8.8 Imp.gal.)

6029-1. Specifications
■Oil capacity (Drain and refill  reference*)
*: The engine oil capacity is a reference quantity to be used when changing
the engine oil. When actually adding the engine oil, make sure that the oil
level is between the low level ma rk and refill upper limit mark (P.506).
Warm up and turn off the hybrid syst em, wait about 5 minutes, and check
the oil level on the dipstick.
■Engine oil selection
“Toyota Genuine Motor Oil” is
used in your Toyota vehicle.
Use Toyota approved “Toyota
Genuine Motor Oil” or equiva-
lent to satisfy the following
grade and viscosity.
Oil grade:
ILSAC GF-6B multigrade engine
oil
Recommended viscosity: SAE 0W-16
SAE 0W-16 is the best choice
for good fuel economy and good
starting in cold weather.
If SAE 0W-16 is not available,
SAE 0W-20 oil may be used.
However, it must be replaced
with SAE 0W-16 at the next oil
change.
Electric motor (traction motor)
TypePermanent magnet synchronous motor
Maximum output120 kW
Maximum torque153.4 ft•lbf (208 N•m, 21.2 kgf•m)
Hybrid battery (traction battery)
TypeLithium-ion battery
Voltage3.7 V/cell
Capacity51.0 Ah
Quantity72 cells
Nominal voltage266.4 V
Lubrication system
With filter4.1 qt. (3.9 L, 3.4 Imp. qt.)
Without filter3.7 qt. (3.5 L, 3.1 Imp. qt.)

6039-1. Specifications
9
Vehicle specifications
Outside temperature
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 tem-
perature. 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 label:
API registered mark is added to
some oil containers to help you
select the oil you should use.
*: The coolant capacity is the quantity of reference.
If replacement is necessary, contact your Toyota dealer.
A
Cooling system
Capacity*Gasoline engine6.4 qt. (6.1 L, 5.4 Imp. qt.)
Power control unit1.7 qt. (1.6 L, 1.4 Imp. qt.)
Coolant type
Use either of the following:
 “Toyota Super Long Life Coolant”
 Similar high-quality ethylene gly-
col-based non-silic ate, non-amine,
non-nitrite, and non-borate cool-
ant with long-life hybrid organic
acid technology
Do not use plain water alone.

6049-1. Specifications
*: The fluid capacity is the quantity of reference.If replacement is necessary, contact your Toyota dealer.
Ignition system (spark plug)
MakeDENSO FC16HR-Q8
Gap0.031 in. (0.8 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):
12.0 V or higher
(Turn the power switch to OFF and turn on
the high beam headlights for 30 seconds.)
If the voltage is lower than the standard
value, charge the battery.
Charging rates (Slow charge)5 A max.
Hybrid transmission
Fluid capacity*3.9 qt. (3.7 L, 3.2 Imp. qt.)
Fluid typeToyota Genuine e-Transaxle fluid TE
NOTICE
■Hybrid transmission fluid type
Using transmission fluid other than the above type may cause abnormal
noise or vibration, or ultimately da mage the transmission of your vehicle.
Brakes
Pedal clearance*15.2 in. (132 mm) Min.
Pedal free play0.04  0.24 in. (1.0  6.0 mm)

6059-1. Specifications
9
Vehicle specifications
*1: Minimum pedal clearance when depressed with a force of 67.4 lbf (300 N, 30.6 kgf) while the hybr id system is operating.
When performing the brake pedal inspection, also be sure to check that the
brake system warning light is not illuminated when the hybrid system is
operating. (If the brake system warning light is illuminated, refer to P.555.)
*2: Make sure to confirm that the brake system warning light (yellow) does
not illuminate. (If the br ake system warning light illuminates, refer to
P.555.)
Vehicles with 17-inch tires
Brake pad wear limit
Front
0.06 in. (1.5 mm)
Rear
0.08 in. (2.0 mm)
Parking brake indicator*2
When pushing the parking brake switch for
1 to 2 seconds: turns off
When pulling the parking brake switch for
1 to 2 seconds: comes on
Fluid typeFMVSS No.116 DOT 3 or SAE J1703
FMVSS No.116 DOT 4 or SAE J1704
Steering
Free playLess than 1.2 in. (30 mm)
Tires and wheels
Tire size195/60R17 90H
Tire inflation pressure (Recom-
mended cold tire inflation pres-
sure)
Front:
36 psi (250 kPa, 2.5 kgf/cm
2 or bar)
Rear:
35 psi (240 kPa, 2.4 kgf/cm
2 or bar)
Spare:
None
Wheel size17  6 1/2J
Wheel nut torque76 ft•lbf (103 N•m, 10.5 kgf•m)

6069-1. Specifications
Vehicles with 19-inch tires
Tire size195/50R19 88H
Tire inflation pressure (Recom-
mended cold tire inflation pres-
sure)
Front:
35 psi (240 kPa, 2.4 kgf/cm
2 or bar)
Rear:
33 psi (230 kPa, 2.3 kgf/cm
2 or bar)
Spare:
None
Driving at high speeds (above 100 mph
[160 km/h]) (in countries where such
speeds are permitted by law):
Add 3 psi (20 kPa, 0.2 kgf/cm
2 or bar) to
the front tires and rear tires.
Never exceed the maximum cold tire infla-
tion pressure indicated on the tire sidewall.
Wheel size19  6 1/2J
Wheel nut torque76 ft•lbf (103 N•m, 10.5 kgf•m)

6079-1. Specifications
9
Vehicle specifications
■Gasoline quality
In very few cases, driveability prob-
lems may be caused by the brand of
gasoline you are usin g. If driveability
problems persist, try changing the
brand of gasoline. If this does not
correct the problem, consult your
Toyota dealer.
■Recommendation of the use of
gasoline containing detergent
additives
●Toyota recommends the use of
gasoline that contains detergent
additives to avoid the build-up of
engine deposits.
●All gasoline sold in the U.S.A. con-
tains minimum detergent additives
to clean and/or keep clean intake
systems, per EPA’s lowest addi-
tives concentration program.
●Toyota strongly recommends the
use of Top Tier Detergent Gaso-
line. For more information on Top
Tier Detergent Gasoline and a list
of marketers, please go to the offi-
cial 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 avail-
able in some cities. These fuels are
typically acceptable for use, provid-
ing they meet other fuel require-
ments.
Toyota recommends these fuels,
since the formulations allow for
reduced vehicle emissions.
■Non-recommendation of the
use of blended gasoline
●Use only gasoline containing up to
15% ethanol.
DO NOT use any flex-fuel or gas-
oline that could contain more than
15% ethanol, including from any
pump labeled E30 (30% ethanol
), E50 (50% ethanol ), E85
(85% ethanol ) (which are only
some examples of fuel containing
more than 15% ethanol).
●If you use gasohol in your vehicle,
be sure that it has an octane rat-
ing no lower than 87.
●Toyota does not recommend the
use of gasoline containing metha-
nol.
■Non-recommendation of the
use of gasoline containing MMT
Some gasoline contains an octane
enhancing additive called MMT
(Methylcyclopentadienyl Manga-
nese Tricarbonyl).
Toyota does not recommend the
use of gasoline that contains MMT.
Fuel information
You must only use unleaded
gasoline in your vehicle.
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 knock-
ing. Persistent knocking
can lead to engine damage.
At minimum, the gasoline you
use should meet the specifica-
tions of ASTM D4814 in the
U.S.A..
AB
C

6089-1. Specifications
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 while
accelerating or driving uphill. This
is normal and there is no need for
concern.
NOTICE
■Notice on fuel quality
●Do not use improper fuels. If
improper fuels are used, the
engine will be damaged.
●Do not use leaded gasoline.
Leaded gasoline can cause
damage to your vehicle’s three-
way catalytic converters caus-
ing 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 per-
formance 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 start-
ing, vaporization, engine knock-
ing, etc.) is encountered after
using a different type of fuel, dis-
continue the use of that type of
fuel.
■When refueling with gasohol
Take care not to spill gasohol. It
can damage your vehicle’s paint.
■Notice about fuel
 P.86

6099-1. Specifications
9
Vehicle specifications
Tire size (P.610)
DOT and Tire Identification Number (TIN) ( P.610)
Location of treadwear indicators ( P.513)
Tire ply composition and materials
Plies are layers of rubber-coated parallel cords. Cords are the strands
which form the plies in a tire.
Radial tires or bias-ply tires
A radial tire has “RADIAL” on the sidewall. A tire not marked “RADIAL” is a
bias-ply tire.
TUBELESS or TUBE TYPE
A tubeless tire does not ha ve a tube and air is directly put into the tire. A
tube type tire has a tube inside the tire and the tube maintains the air pres-
sure.
Load limit at maximum cold tire inflation pressure ( P.613)
Maximum cold tire inflation pressure ( P.613)
This means the pressure to wh ich a tire may be inflated.
Uniform tire quality grading
For details, see “Uniform Tire Quality Grading” that follows.
Summer tires or all season tires ( P.514)
An all season tire has “M+S” on the sidewall. A tire not marked “M+S” is a
Tire information
Typical tire symbols
A
B
C
D
E
F
G
H
I
J

6109-1. Specifications
summer tire.
Type ADOT symbol
*
Tire Identification Number
(TIN)
Tire manufacturer’s identifi-
cation mark
Tire size code
Manufacturer’s optional tire
type code (3 or 4 letters)
Manufacturing week
Manufacturing year
*: The DOT symbol certifies that the tire conforms to applicable Fed-
eral Motor Vehicle Safety Stan-
dards.
Type B
DOT symbol
*
Tire Identification Number
(TIN)
Tire manufacturer’s identifi-
cation mark
Manufacturer’s code
Manufacturing week
Manufacturing year
*: The DOT symbol certifies that the tire conforms to applicable Fed-
eral Motor Vehicle Safety Stan-
dards.
■Typical tire size information
The illustration indicates typical
tire size.
Typical DOT and Tire
Identification Number
(TIN)
A
B
C
D
E
F
GTire size
A
B
C
D
E
F