fuel pressure TOYOTA PRIUS PRIME 2023 Owners Manual

PRIUS PRIME_OM_OM47E73U_(U)
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Pictorial indexSearch by illustration
For safety
and securityMake sure to read through them
(Main topics: Child seat, theft deterrent system)
Plug-in hybrid
systemPlug-in hybrid system features, charging method,
etc.
(Main topics: Driving tips, charging methods)
Vehicle status
information and
indicatorsReading driving-related information
(Main topics: Meters, multi-information display)
Before driving
Opening and closing the doors and windows,
adjustment before driving
(Main topics: Keys, doors, seats, power windows)
Driving
Operations and advice which are necessary for
driving
(Main topics: Starting hybrid system, refueling)
Interior featuresUsage of the interior features
(Main topics: Air conditioner, storage features)
Maintenance
and careCaring for your vehicle and maintenance
procedures
(Main topics: Interior and exterior, light bulbs)
When trouble
arisesWhat to do in case of malfunction and emergency
(Main topics: 12-volt battery discharge, flat tire)
Vehicle
specificationsVehicle specifications, customizable features
(Main topics: Fuel, oil, tire inflation pressure)
For ownersReporting safety defects for U.S. owners, and seat
belt, SRS airbag and headlight aim instructions for
Canadian owners
IndexSearch by symptom
Search alphabetically

17Pictorial index
Defogging the mirrors*.........................................................P.436
Windshield wipers .............................................................P.275
Precautions for winter season.... ..........................................P.429
To prevent freezing (windshield de-icer)
*.............................P.440
Precautions against car wash ..............................................P.488
Fuel filler door ....................................................................P.279
Refueling method .................................................................P.279
Fuel type/fuel tank capacity .................................................P.601
Tires ....................................................................................P.513
Tire size/inflation pressure ...... .............................................P.605
Winter tires/tire chain ...........................................................P.429
Checking/rotation/tire pressure warning system ..................P.513
Coping with flat tires.............................................................P.574
Hood ....................................................................................P.501
Opening ...............................................................................P.501
Engine oil .............................................................................P.602
Coping with overheat ...........................................................P.594
Warning messages ..............................................................P.566
Headlights...........................................................................P.269
Parking lights .....................................................................P.269
Daytime running lights ............... .......................................P.269
Front turn signal lights ......................................................P.262
LED accessories lamp
*......................................................P.269
Front side marker lights ....................................................P.269
Tail lights
*...........................................................................P.269
Stop lights/tail lights ..........................................................P.269
Exterior lights for driving
(Replacing: P.543)
E
F
G
H
I
J
K
L
M
N
O
P

892-1. Plug-in hybrid system
2
Plug-in hybrid system
gently and a timely manner.
A greater amount of electrical
energy can be regenerated
when slowing down.
Repeated acceleration and
deceleration, as well as long
waits at traffic lights, will lead to
high fuel and electricity con-
sumption. Check traffic reports
before leaving and avoid delays
as much as possible. When driv-
ing in a traffic jam, gently
release the brake pedal to allow
the vehicle to move forward
slightly while avoiding overuse
of the accelerator pedal. Doing
so can help control excessive
electricity and fuel consumption.
 Control and maintain the vehi-
cle at a constant speed.
Before stopping at a toll booth
or similar, allow plenty of time
to release the accelerator and
gently apply the brakes. A
greater amount of electrical
energy can be regenerated
when slowing down.
 Electricity consumption will
increase significantly when
driving at high speeds in EV
mode or AUTO EV/HV mode.
If there will be a long distance
to the next external charging
point after leaving a freeway, it is recommended to drive in
HV mode while on the free-
way and change to EV mode
or AUTO EV/HV mode after
leaving the freeway. (
P.74)
 Turn the “A/C” switch off
when it is not needed. Doing
so can help reduce excessive
electricity and fuel consump-
tion.
In summer: When the ambient tem-
perature is high, use the recircu-
lated air mode. Doin g so will help to
reduce the burden on the air condi-
tioning system and reduce electric-
ity and fuel consumption as well.
In winter: Avoid excessive and
unnecessary use of the heater.
Usage of the heated steering wheel
(if equipped) and seat heaters (if
equipped) are effective. ( P.443)
Make sure to check the tire infla-
tion pressure frequently. If there
is improper tire inflation pres-
sure in the tires, the EV driving
range will become shorter, and
fuel consumption when in HV
mode will increase.
Also, as snow tires can cause
large amounts of friction, their
use on dry roads can lead to
increased fuel and electricity
consumption.
Delays
Highway driving
Air conditioning
Checking tire inflation
pressure

922-1. Plug-in hybrid system
■Release the accelerator
pedal early before stopping
the vehicle, such as at a
traffic light
The regenerative brake will
operate to convert the kinetic
energy of the vehicle into electri-
cal energy, which will charge the
hybrid battery (traction battery).
The regeneration status can be
checked from the Hybrid Sys-
tem Indicator. ( P.158)
When the brake pedal is
depressed lightly during decel-
eration, the regeneration
amount increases, enabling
more electrical energy to be
recovered.
If the brake pedal is depressed too
strongly, the recovered amount
indicator will reach the maximum
level and the upper limit of the
recoverable en ergy will be
exceeded. Therefore, be sure to
operate the brake pedal early.
■Use the air conditioning
system appropriately, and
also utilize the heated steer-
ing wheel (if equipped) and
seat heaters (if equipped)
In EV mode, the vehicle is
cooled and heated by electrical
energy. (Except in extremely
cold temperatures of approxi-
mately 14°F [-10°C] or less.)
Preventing excessive cooling or
heating of the vehicle will reduce
power consumption and
improve electrical efficiency. When eco air conditioning mode
is used, the air conditioning con-
trol is switched automatically to
a lower setting. (
P.437)
The heated steering wheel and
seat heaters are efficient heat-
ing device that directly warm the
body using less electric power.
When used together with the air
conditioning system, a low tem-
perature setting can be used to
improve electrical and fuel effi-
ciency.
■Check the tire pressure
If the tire pressure is lower than
the specified value, it will
worsen the electrical and fuel
efficiency.
A pressure level 7 psi (50 kPa, 0.5
kgf/cm
2 or bar) lower than the spec-
ified value will cause a worsening of
several percentage points.
■When driving on highways,
use the EV/HV mode selec-
tion switch to drive in HV
mode
The power consumption will
increase significantly if the vehi-
cle is driven in EV mode on
highways.
■Do not load unnecessary
objects in the vehicle
Driving with objects weighing
220 lb. (100 kg) in the vehicle
will worsen the electrical and
fuel efficiency by approximately
3%.
Air resistance also greatly

1513-1. Instrument cluster
3
Vehicle status information and indicators
*1: These lights turn on when the power switch is turned to ON to
indicate that a system check is
being performed. They will turn
off after the hybrid system is on,
or after a few seconds. There
may be a malfunction in a sys-
tem if the light does not come on,
or turn off. Have the vehicle
inspected by your Toyota dealer.
*2: This light illuminates on the multi-informatio n display with a
message.
(U.S.A.)
Malfunction indicator
lamp
*1 (  P.556)
(Canada)
Malfunction indicator
lamp
*1 ( P.556)
SRS warning light
*1
(  P.557)
(U.S.A.)
ABS warning light*1
(  P.557)
(Canada)
ABS warning light*1
(  P.557)
(Red)
Electric power steering
system warning light
*1
(  P.558)
(Yellow)
Electric power steering
system warning light
*1
(  P.558)
PCS warning light
*1
(  P.558)
(Yellow)
LTA indicator ( P.558)
(Yellow)
LDA indicator ( P.558)
(Yellow)
PDA indicator ( P.559)
(Yellow)
Cruise control indicator
( P.559)
(Yellow)
Dynamic radar cruise con-
trol indicator ( P.559)
Driving assist information
indicator
*1 (  P.559)
Intuitive parking assist
OFF indicator
*3 ( P.560)
Slip indicator light
*1
(  P.560)
Inappropriate pedal opera-
tion warning light
*2
(  P.560)
(Flashes)
Brake hold operated indi-
cator
*1 ( P.561)
(U.S.A.)
(Flashes)
Parking brake indicator
(  P.561)
(Canada)
(Flashes)
Parking brake indicator
( P.561)
Tire pressure warning
light
*1 (  P.561)
Low fuel level warning
light ( P.562)
Driver’s and front passen-
ger’s seat belt reminder
light ( P.562)
Rear passengers’
seat belt reminder
light ( P.562)

1703-1. Instrument cluster
system.
•“Timing”
Select to set the alert timing for
FCTA system.
Regenerative brake
Select to set up the following items.
• “Deceleration”
Select to change the regenerative
braking force when Regeneration
Boost is operating. ( P.260)
• “Deceleration Memory”
Select to store the settings for
regenerative braking force.
(  P.260)
 “TPWS setting” (Tire Pres-
sure Warning System)
( P.516)
• “Tire Set Switching”
Select to register the tire pressure
warning system sensor ID code set.
( P.524)
• “Tire Rotation”
Select to register the position of
each wheel after performing a tire
rotation. ( P.518)
• “Tire Pressure Setting”
Select to perform the tire inflation
pressure setting procedure of the
tire pressure warning system.
(  P.520)
• “Pressure unit setting”
Select to change the units of mea-
sure displayed.( P.619)
 Driver monitor (if equipped)
Select to enable/disable the driver
monitor warning function. ( P.292)
 PBD (Power Back Door) (if equipped) (
P.194)
Select to set up the following items.
• System settings
Select to enable/d isable the power
back door system.
• “Opening Adjustment”
Select the open position when
power back door is fully open.
•“Volume”
Select to set the volume of the
buzzer which sounds when the
power back door system operates.
 “Scheduled Maintenance”
Select to reset the scheduled main-
tenance information (message indi-
cating maintenance is required and
distance until the next mainte-
nance) after all maintenance is per-
formed.
Oil Maintenance
Select to reset th e Oil maintenance.
(  P.506)
 Rear Seat Reminder
( P.188)
Select to enable/disable the rear
seat reminder function.
Digital Keys (if equipped)
Select to reset registered digital
keys. ( P.183)
■ Settings
 “Language”
Select to change the language on
the multi-information display.
“Units”
Select to change the unit of mea-
sure for fuel consumption.
“Meter Type”

1713-1. Instrument cluster
3
Vehicle status information and indicators
Select to enable/disable Hybrid
System Indicator. (
P.158)
 EV indicator
Select to enable/disable the EV
indicator.
EV Drive Information
Select to change the item on the
meter display between “EV Energy
remaining” or “EV Distance remain-
ing”. ( P.155)
 (Driving information dis-
play settings)
Select to set up the following items.
• “Hybrid System”
Select to enable/disable the ECO
Accelerator Guidance ( P.158).
• “Fuel Economy”
Select to change the display on
Fuel Economy. ( P.163)
• “Power Consumption”
Select to change the display on
Power Consumption. ( P.163)
 (Audio settings)
Select to enable/disable
screen.
 (Vehicle information dis-
play settings)
• “Drive Info Type”
Select to change the drive informa-
tion type display between trip and
total. ( P.163)
• “Drive Info Items”
Select to set the items on the upper
and lower side of the drive informa-
tion screen from three items, aver-
age speed, distance and total time.
 “Trip Summary”
Select to set the items displayed
from “Drive Info ” or “Charging
Schedule” when the power switch
is turned off.
 Pop-Up Display
Select to enable/disable the pop-up
displays, which may appear in
some situations.
“Calendar”
Select to set up the calender. This
can only be set if GPS calibration of
clock is turned off in the multimedia
system settings.
Default Settings
Select to reset the meter display
settings.
■Tire pressure
• It may take a few minutes to dis- play the tire inflation pressure
after the power switch is turned to
ON. It may also take a few min-
utes to display the tire inflation
pressure after inflation pressure
has been adjusted.
• “---” may be displayed if the tire position information cannot be
determined due to unfavorable
radio wave conditions.
• Tire inflation pressure changes with temperature. The displayed
values may also be different from
the values measured using a tire
pressure gauge.
■Suspension of the settings dis-
play
●In the following situations, opera-
tion of the settings display will be
temporarily suspended.
• When a warning message appears on the multi-information
display
• When the vehicle begins to move

2795-4. Refueling
5
Driving
5-4.Refueling
Close all the doors and win-
dows, and turn the power
switch to OFF.
 Confirm the type of fuel.
■Fuel types
 P.607
■Fuel tank opening for unleaded
gasoline
To help prevent incorrect fueling,
your vehicle has a fuel tank opening
that only accommodates the spe-
cial nozzle on unleaded fuel pumps.
Opening the fuel tank
cap
The fuel tank of your vehicle
has a special structure,
which requires a reduction
in fuel tank pressure before
refueling. After the opener
switch has been pressed, it
will take several seconds
until the vehicle is ready for
refueling.
Before refueling the vehi-
cle
WARNING
■When refueling the vehicle
Observe the following precautions
while refueling the vehicle. Failure
to do so may result in death or
serious injury.
●After exiting the vehicle and
before opening the fuel door,
touch an unpainted metal sur-
face to discharge any static
electricity. It is important to dis-
charge static electricity before
refueling because sparks result-
ing from static electricity can
cause fuel vapors to ignite while
refueling.
●Always hold the grips on the
fuel tank cap and turn it slowly
to remove it.
A whooshing sound may be
heard when the fuel tank cap is
loosened. Wait until the sound
cannot be heard before fully
removing the cap. In hot
weather, pressurized fuel may
spray out of the filler neck and
cause injury.
●Do not allow anyone that has
not discharged static electricity
from their body to come close to
an open fuel tank.
●Do not inhale vaporized fuel.
Fuel contains substances that
are harmful if inhaled.
●Do not smoke while refueling
the vehicle.
Doing so may cause the fuel to
ignite and cause a fire.
●Do not return to the vehicle or
touch any person or object that
is statically charged. This may
cause static electricity to build
up, resulting in a possible igni-
tion hazard.
■When refueling
Observe the following precautions
to prevent fuel overflowing from
the fuel tank:
●Securely insert the fuel nozzle
into the fuel filler neck.
●Stop filling the tank after the fuel
nozzle automatically clicks off.

4867-1. Maintenance and care
7-1.Maintenance and care
Working from top to bottom,
liberally apply water to the
vehicle body, wheel wells and
underside of the vehicle to
remove any dirt and dust.
 Wash the vehicle body using
a sponge or soft cloth, such
as a chamois.
 For hard-to-remove marks,
use car wash soap and rinse
thoroughly with water.
 Wipe away any water.
 Wax the vehicle when the
waterproof coating deterio-
rates.
If water does not bead on a clean
surface, apply wax when the vehi-
cle body is cool.
■Before car washes
Check that the fuel filler door and
charging port lid on your vehicle are
closed properly.
■Automatic car washes
●Before washing the vehicle:
• Fold the mirrors
• Turn off the power back door
Start washing from the front of the vehicle. Make sure to extend the
mirrors before driving.
●Brushes used in automatic car
washes may scratch the vehicle
surface, parts (wheel, etc.) and
harm your vehicle’s paint.
●Rear spoiler may not be washable
in some automatic car washes.
There may also be an increased
risk of damage to vehicle.
●When the shift position needs to
be held in N, refer to P.259.
●If you need to release the parking
brake, turn off the brake hold sys-
tem, release the parking brake,
and set the power switch to ACC
while holding the N position.
(
 P.259)
■High pressure car washes
As water may enter the cabin, do
not bring the nozzle tip near the
gaps around the doors or perimeter
of the windows, or spray these
areas continuously.
■Note for a smart key system
If the door handle becomes wet
while the electronic key is within the
effective range, the door may lock
and unlock repeatedly. In that case,
follow the following correction pro-
cedures to wash the vehicle:
●Place the key in a position 6 ft. (2
m) or more separate from the
vehicle while the vehicle is being
washed. (Take care to ensure that
the key is not stolen.)
●Set the electronic key to battery-
saving mode to disable the smart
key system. ( P.205)
■Wheels and wheel ornaments
(vehicles without matte painted
wheels)
●Remove any dirt immediately by
using a neutral detergent.
●Wash detergent off with water
immediately after use.
●To protect the paint from damage,
make sure to observe the follow-
Cleaning a nd protect-
ing the vehicle exte-
rior
Perform the following to
protect the vehicle and
maintain it in prime condi-
tion:
Cleaning instructions

5007-3. Do-it-yourself maintenance
Radiator and
condenser
( P.508)

Tire inflation
pressure
( P.532)• Tire pressure
gauge
• Compressed air source
Washer fluid
( P.510)
• Water or washer
fluid containing
antifreeze (for win-
ter use)
• Funnel (used only for adding water or
washer fluid)
WARNING
The engine compartment contains
many mechanisms and fluids that
may move suddenly, become hot,
or become electrically energized.
To avoid death or serious injury,
observe the following precautions.
■When working on the engine
compartment
●Make sure that “POWER ON”
on the meter and the “READY”
indicator are both off.
●Keep hands, clothing and tools
away from the moving fan.
●Be careful not to touch the
engine, power control unit, radi-
ator, exhaust manifold, etc. right
after driving as they may be hot.
Oil and other fluids may also be
hot.
●Do not leave anything that may
burn easily, such as paper and
rags, in the engine compart-
ment.
ItemsParts and tools●Do not smoke, cause sparks or
expose an open flame to fuel or
the battery. Fuel and battery
fumes are flammable.
■When working near the elec-
tric cooling fan or radiator
grille
Be sure the power switch is OFF.
With the power switch in ON, the
electric cooling fan may automati-
cally start to run if the air condi-
tioning is on and/or the coolant
temperature is high. ( P.508)
■Safety glasses
Wear safety glasses to prevent
flying or falling material, fluid
spray, etc., from getting in your
eyes.
NOTICE
■If you remove the air cleaner
filter
Driving with the air cleaner filter
removed may cause excessive
engine wear due to dirt in the air.