light TOYOTA PRIUS PRIME 2023 Owner's Guide

842-1. Plug-in hybrid system
■Running out of fuel
When the vehicle has run out of fuel
and the hybrid system cannot be
started, refuel th e vehicle with at
least enough gasoline to make the
low fuel level warning light ( P.562)
go off. If there is only a small
amount of fuel, the hybrid system
may not be able to start. (The stan-
dard amount of fuel is about 2.1 gal.
[8.0 L, 1.8 Imp.gal.], when the vehi-
cle is on a level surface. This value
may vary when the vehicle is on a
slope. Add extra fuel when the vehi-
cle is inclined.)
■Electromagnetic waves
●High voltage parts and cables on
the Plug-in Hybrid Electric Vehi-
cles incorporate electromagnetic
shielding, and therefore emit
approximately the same amount
of electromagnetic waves as con-
ventional gasoline powered vehi-
cles or home electronic
appliances.
●Your vehicle may cause sound
interference in some third party-
produced radio parts.
■Effect of magnetic forces
If objects that generate strong mag-
netic forces, such as large speak-
ers, are placed inside the luggage
compartment or installed nearby,
the generated magnetic forces may
negatively affect the hybrid system.
■Hybrid battery (traction battery)
(lithium-ion battery)
The hybrid battery (traction battery)
has a limited service life.
The hybrid battery (traction battery)
capacity (the ability to hold a
charge) reduces with time and use
in the same way as other recharge-
able batteries. The extent at which
capacity reduces changes drasti-
cally depending on the environment
(ambient temperature, etc.) and
usage conditions, such as how the
vehicle is driven and how the hybrid battery (traction battery) is charged.
This is a natural characteristic of
lithium-ion batteries, and is not a
malfunction. Also, even though the
EV driving range becomes shorter
when the hybrid battery (traction
battery) capacity reduces, vehicle
performance does not significantly
become worse.
In order to reduce the possibility of
the capacity reducing, follow the
directions listed on P.113, “Capacity
reduction of the hybrid battery (trac-
tion battery)”.
■Starting the hybrid system in an
extremely cold environment
When the hybrid battery (traction
battery) is extremely cold (below
approximately -22°F [-30°C]) under
the influence of the outside tem-
perature, it may not be possible to
start the hybrid system. In this case,
try to start the hybrid system again
after the temperature of the hybrid
battery increases due to the outside
temperature increase etc.
WARNING
■High voltage precautions
The vehicle has high voltage DC
and AC systems as well as a 12-
volt system. DC and AC high volt-
age is very dangerous and can
cause severe burns and electric
shock that may result in death or
serious injury.
●Never touch, disassemble,
remove or replace the high volt-
age parts, cables or their con-
nectors.
●The hybrid system will become
hot after starting as the system
uses high voltage. Be careful of
both the high voltage and the
high temperature, and always
obey the caution labels
attached to the vehicle.

872-1. Plug-in hybrid system
2
Plug-in hybrid system
When a certain level of impact is
detected by the impact sensor,
the emergency shut off system
blocks off the high voltage cur-
rent and stops the fuel pump to
minimize the risk of electrocu-
tion and fuel leakage.
If the emergency shut off system
activates, your vehicle will not
restart. To restart the hybrid sys-
tem, contact your Toyota dealer.
A message is automatically dis-
played when a malfunction
occurs in the hybrid system or
an improper operation is
attempted.
If a warning message is shown
on the multi-information display,
read the message and follow the
instructions.
■If a warning light comes on, a
warning message is displayed
or the 12-volt battery is discon-
nected
The hybrid system may not start. In
that case, try to start the system
again. If the “READY” indicator does
not come on, contact your Toyota
dealer.
NOTICE
●If the vehicle has not been refu-
eled for a certain amount of time
and it is possible that the quality
of the fuel remaining in the tank
has changed, “No New Fuel has
been Added Recently Please
refuel” is displayed on the multi-
information display when the
power switch is turned to ON. If
the message is displayed, refuel
the vehicle immediately.
Emergency shut off sys-
tem
Hybrid warning message

882-1. Plug-in hybrid system
Primarily using EV mode and
AUTO EV/HV mode when driv-
ing in cities and using HV mode
when driving on highways (or
freeways) can help conserve
fuel and electricity. (P.74)
When using Eco drive mode, the
torque corresponding to the
accelerator pedal depression
amount can be generated more
smoothly than it is in normal
conditions. In addition, the oper-
ation of the air conditioning sys-
tem (heating/cooling) will be
minimized, improving fuel and
electricity economy. ( P.422)
Eco-friendly driving is possible
by keeping the Hybrid System
Indicator within Eco area.
( P.158) Shift the shift position to D when
stopped at a traffic light, or driv-
ing in heavy traffic etc. Shift the
shift position to P when parking.
When using the N, there is no
positive effect on fuel consump-
tion. In the N, the gasoline
engine operates but electricity
cannot be generated. Also,
when using the air conditioning
system, etc., the hybrid battery
(traction battery) power is con-
sumed.

Drive your vehicle smoothly.
Avoid abrupt acceleration and
deceleration. Gradual accel-
eration and deceleration will
make more effective use of
the electric motor (traction
motor) without having to use
gasoline engine power.
 Avoid repeated acceleration.
Repeated acceleration con-
sumes hybrid battery (trac-
tion battery) po wer, resulting
in poor fuel consumption. Bat-
tery power can be restored by
driving with the accelerator
pedal slightly released.
Make sure to operate the brakes
Plug-in Hybrid Elec-
tric Vehicle driving
tips
For economical and ecolog-
ical driving, pay attention to
the following points:
Using EV mode, AUTO
EV/HV mode and HV
mode effectively
Using Eco drive mode
Use of Hybrid System
Indicator
Changing the shift posi-
tion
Accelerator pedal/brake
pedal operation
When braking

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

942-2. Charging
2-2.Charging
AC charging inlet
AC charging inlet light
Charging indicator (P.96)
AC charging port lid ( P.94)
AC charging port
AC charging cable ( P.97)
■Open
Slightly open the charging port
lid by pressing the rear edge of it (the position shown in the illus-
tration).
Fully open the charging port lid by
hand.
Charging equipment
This vehicle features equipment for connecting to an external
power source.
Charging equipment and names
A
B
C
D
E
F
Opening/closing the
charging port lid

952-2. Charging
2
Plug-in hybrid system
■Close
Move the charging port lid to the
slightly open position and then
press the rear edge (the position
shown in the illustration) to close
it.
■Lid lifter
The charging port lid is not closed if
the lid lifter is pushed in before clos-
ing the charging port lid. In that
case, push again with the door
unlocked and release the lid lifter,
and close the charging port lid
again.
■Charging port lid open/close
detection switch
When the charging port lid is open,
be careful not to touch the charging
port lid open/close detection switch
(position shown in the illustration). If
you accidentally touch the switch,
the vehicle may incorrectly indicate
that the opened/closed status of the
charging port lid, or the charging
connector may not be able to
lock/unlock normally.

1132-2. Charging
2
Plug-in hybrid system
■Safety functions
●The hybrid system will not start
while the AC charging cable is
attached to the vehicle, even if the
power switch is operated.
●If the AC charging cable is con-
nected while the “READY” indica-
tor is illuminated, the hybrid
system will stop automatically and
driving will not be possible.
■During charging
●The charging starting time may
differ depending on the state of
the vehicle, but this does not indi-
cate a malfunction.
●Cooling fan sounds may be heard
from near the luggage compart-
ment.
●During charging, sounds may be
heard from near the hybrid battery
(traction battery) in accordance
with the operation of the air condi-
tioning system or “Battery Cooler”.
●During and after charging, the lug-
gage compartment and its sur-
rounding area in which the
onboard traction battery charger is
installed may get warm.
●The surface of the CCID
(Charging Circuit Interrupting
Device) may become hot, but this
does not indicate a malfunction.
●Depending on radio wave condi-
tions, interference may be heard
on the radio.
■When charging using a public
charging facility
When charging using a public charging facility, check the setting of
the charging schedule function.
●When the charging schedule is
registered, temporarily turn off the
function or turn “Charge Now” on.
(
 P.128, 132)
●When the charging schedule is set
to on, charging will not start even
if the AC charging cable is con-
nected. Also, charging fee may
occur due to connection of the AC
charging cable.
■Using a DC Charger
DC Chargers cannot be used with
this vehicle.
■Capacity reduction of the
hybrid battery (traction battery)
The capacity of the hybrid battery
(traction battery) will decline gradu-
ally when the hybrid battery (traction
battery) is in use. The rate at which
it declines will diff er in accordance
with environmental conditions and
the way in which the vehicle is used.
Observing the following can help
suppress battery capacity decline.
●Avoid parking the vehicle in areas
with a high temperature under
direct sunlight when the hybrid
battery (traction battery) is fully
charged.
●Avoid accelerating and decelerat-
ing frequently and suddenly when
EV driving.
●Avoid frequent driving near the top
speed for EV driving. ( P.79)
●Leave a low level of charge in the
hybrid battery (traction battery)
when leaving the vehicle undriven
for a long period of time.
After confirming that EV mode or
AUTO EV/HV mode has switched
to HV mode, turn the power switch
off.
●Use the charging schedule func-
tion as much as possible in order
to fully charge t he hybrid battery
(traction battery) immediately
before starting off. ( P.123)
Things to know before
charging
Make sure to read the fol-
lowing precautions before
charging the hybrid battery
(traction battery).

1142-2. Charging
Also, if the hybrid battery (traction
battery) capacity reduces, the dis-
tance that can be driven in EV mode
or AUTO EV/HV mode decreases.
However, vehicle performance does
not significantly become worse.
■When the remaining charge of
the hybrid battery (traction bat-
tery) is low after charging
In the following situations, the
remaining charge of the hybrid bat-
tery (traction battery) after charging
completes may be less than normal
in order to protect the system (the
EV driving range after the hybrid
battery [traction battery] is fully
charged may be shorter).
*
●Charging is carried out when the
outside temperature is low or high.
●Charging is carried out immedi-
ately after high-load driving or in
extreme heat.
When none of the above situations
apply and there is a drastic drop in
the remaining charge of the hybrid
battery (traction battery) after
charging completes, have the vehi-
cle inspected by your Toyota dealer.
*: When this occurs, even if the remaining charge display of the
hybrid battery (traction battery)
shows that it is fully charged, the
remaining charge rapidly
decreases faster than normal.
■When the charging amount sent
to the hybrid battery (traction
battery) decreases
When the amount of power supplied
by the charger is low or operation of
the “Battery Heater”, etc., reduces
the charging power sent to the
hybrid battery (traction battery), the
charging amount sent to the hybrid
battery (traction battery) may
decrease.
■Certification
This device complies with Part 15 of
the FCC Rules. Operation is subject to the following two conditions:
(1) this device may not cause harm-
ful interference, and
(2) this device must accept any
interference received, including
interference that may cause unde-
sired operation.
■Charging time may increase
In the following si tuations, charging
time may become longer than nor-
mal:
●In very hot or very cold tempera-
tures.
●When the hybrid battery (traction
battery) becomes hot, such as
immediately after high-load driv-
ing.
●The vehicle is consuming a lot of
electricity, for example, when the
headlights are on etc.
●When using “My Room Mode”.
(  P.134)
●There is a power outage during
charging.
●There is an interruption in the
electrical supply.
●There is a drop in the voltage of
external power source.
●The charge in the 12-volt battery
is low, for example due to the
vehicle being left unused for a
long period of time.
●When the upper limit of charging
current is changed in the charging
current setting of the vehicle.
( P.119)
●When the “Battery Heater” oper-
ates. ( P.108)
●When the “Battery Cooler” is oper-
ated before charging. ( P.109)
●When the plug generates heat
due to a loose outlet connection
etc.
●When the temperature of
charging-related parts is high.

1162-2. Charging
The parking brake is applied.
( P.263)
 Lights such as the head-
lights, emergency flashers
and interior lights etc. are
turned off.
If these light switches are turned
on, then these features will con-
sume electricity, and charging time
will increase.
The power switch is turned to
OFF. ( P.251)
Before charging, make sure that
each part of the AC charging
cable is in good condition.
( P.101)
Inspecting the AC
charging cable
How to charge
This section explains the
procedure for charging the
hybrid battery (traction bat-
tery) with AC charging
cable.
When using an AC charger,
make sure to check the
operation instructions on
the AC charger.
When the charging schedule
is registered, make sure
“Charge Now” is turned on
before charging. ( P.128,
132)
NOTICE
■When using the AC charging
cable and related parts
To prevent damage to the AC
charging cable and related parts,
observe the following precautions.
●When interrupting or canceling
charging, remove the charging
connector before removing the
plug.
●When removing the AC
charging cable, check that the
charging connector is unlocked.
●Do not forcefully pull the
charging connector cap.
●Do not apply a vibration to the
charging connector while
charging.
Charging may be stopped.
●Do not insert anything but the
charging connector into the AC
charging inlet.