TOYOTA PRIUS PRIME 2023 Service Manual

411-1. For safe use
1
For safety and security
WARNING
●The SRS front passenger air-
bag deploys with considerable
force, and can cause death or
serious injury, especially if the
front passenger is very close to
the airbag. The front passenger
seat should be positioned as far
possible from the airbag with
the seatback adjusted so that
the passenger is sat upright.
●Improperly seated and/or
restrained infants and children
can be killed or seriously injured
by a deploying airbag. An infant
or child who is too small to use
a seat belt should be properly
secured using a child restraint
system. Toyota strongly recom-
mends that all infants and chil-
dren be placed in the rear seats
of the vehicle and properly
restrained. The rear seats are
safer for infants and children
than the front passenger seat.
(  P.51)
●Do not sit on the edge of the
seat or lean against the dash-
board.
●Do not allow a child to stand in
front of the SRS front passenger
airbag or sit on the lap of a front
passenger.
●Front seat occupants should
never hold items on their lap.
●Do not lean against the door,
roof side rail, or front, side, or
rear pillar.
●Do not allow anyone to kneel on
a seat toward the door or put
their head or hands outside the
vehicle.
●Do not attach anything to or
lean anything against areas
such as the dashboard or steer-
ing wheel pad.

421-1. For safe use
WARNING
●Do not attach anything to areas
such as the doors, windshield,
side windows, front or rear pil-
lars, roof side rails and assist
grips. (With the exception of the
speed limit label P.577)
●Do not use seat accessories
which cover the parts from
which the SRS airbags deploy,
as they may inte rfere with infla-
tion of the SRS airbags. Such
accessories may prevent the
SRS airbags from deploying
correctly, may disable the sys-
tem or cause the SRS airbags
to inflate unintentionally, possi-
bly resulting in death or serious
injury.
●Do not strike or apply significant
force to the SRS airbag system
components, front doors or their
surrounding area.
Doing so may cause the SRS
airbags to malfunction.
●Do not touch any components
of the SRS airbags immediately
after the SRS airbags have
deployed (inflated) as they may
be hot.
●If breathing becomes difficult
after the SRS airbags have
deployed, open a door or win-
dow to allow fresh air in, or
leave the vehicle if it is safe to
do so. Wash off any residue as
soon as possible to prevent skin
irritation.
●If a part where an SRS airbag is
stored is damaged or cracked,
have it replaced by your Toyota
dealer.
●Do not place anything, such as
a cushion, on the front passen-
ger’s seat. Doing so will
disperse the passenger’s
weight, which prevents the sen-
sor from detecting the passen-
ger’s weight properly. As a
result, the SRS front airbags for
the front passenger’s seat may
not deploy in the event of a colli-
sion.
■Modification and disposal of
SRS airbag system compo-
nents
Do not dispose of your vehicle or
perform any of the following modi-
fications without consulting your
Toyota dealer. The SRS airbags
may malfunction or deploy unin-
tentionally, possibly leading to
death or serious injury.
●Removal, installation, disas-
sembly or repair of the SRS air-
bags
●Repair, removal or modification
of the following parts or their
surrounding
• Steering wheel
• Instrument panel
• Dashboard
• Seats
• Seat upholstery
• Front pillars
• Side pillars
• Rear pillars
• Roof side rails
• Front door panels

431-1. For safe use
1
For safety and security
WARNING
• Front door trim
• Front door speakers
●Modifications to the front door
panels (such as making holes in
them)
●Repair or modification of the fol-
lowing parts or their surrounding
• Front fender
• Front bumper
• Sides of the vehicle interior
●Installation of the following parts
or accessories
• Bull bars or kangaroo bars
• Snow plows
• Winches
• Roof luggage carriers
●Modifications to the vehicle’s
suspension
●Installation of electronic devices
such as mobile two-way radios
(RF-transmitter) and CD players
●Modifications to your vehicle for
a person with a physical disabil-
ity

441-1. For safe use
SRS warning light
Driver’s and front passenger’s seat belt reminder light
“PASSENGER AIR BAG OFF” indicator light
“PASSENGER AIR BAG ON” indicator light
Front passenger occupant classification system
Your vehicle is equipped with a front passenger occupant
classification system. This system detects the conditions of
the front passenger seat and activates or deactivates the fol-
lowing SRS airbags.
SRS front passenger airbag
System components
A
B
C
D
WARNING
■Front passenger occupant
classification system precau-
tions
Observe the following precautions
regarding the front passenger
occupant classification system.
Failure to do so may cause death
or serious injury.
●Wear the seat belt properly.
●Make sure the front passenger’s
seat belt plate has not been left
inserted into the buckle before
someone sits in the front pas-
senger seat.

451-1. For safe use
1
For safety and security
WARNING
●Make sure the “PASSENGER
AIR BAG OFF” indicator light is
not illuminated when using the
seat belt extender for the front
passenger seat. If the “PAS-
SENGER AIR BAG OFF” indi-
cator light is illuminated,
disconnect the extender tongue
from the seat belt buckle, and
reconnect the seat belt. Recon-
nect the seat belt extender after
making sure the “PASSENGER
AIR BAG ON” indicator light is
illuminated. If you use the seat
belt extender while the “PAS-
SENGER AIR BAG OFF” indi-
cator light is illuminated, the
SRS airbags for the front pas-
senger will not activate, which
could cause death or serious
injury in the event of a collision.
●Do not apply a heavy load to the
front passenger seat or equip-
ment (e.g. se atback pocket).
●Do not put weight on the front
passenger seat by putting your
hands or feet on the front pas-
senger seat seatback from the
rear passenger seat.
●Do not let a rear passenger lift
the front passenger seat with
their feet or press on the seat-
back with their legs.
●Do not put objects under the
front passenger seat.
●Do not recline the front passen-
ger seatback so far that it
touches a rear seat. This may
cause the “PASSENGER AIR
BAG OFF” indicator light to be
illuminated, which indicates that
the SRS airbags for the front
passenger will not activate in
the event of a severe accident.
If the seatback touches the rear
seat, return th e seatback to a
position where it does not touch
the rear seat. Keep the front
passenger seatback as upright
as possible when the vehicle is
moving. Reclining the seatback
excessively may lessen the
effectiveness of the seat belt
system.
●If an adult sits in the front pas-
senger seat, the “PASSENGER
AIR BAG ON” indicator light is
illuminated. If the “PASSEN-
GER AIR BAG OFF” indicator is
illuminated, ask the passenger
to sit up straight, well back in
the seat, feet on the floor, and
with the seat belt worn correctly.
If the “PASSENGER AIR BAG
OFF” indicator still remains illu-
minated, either ask the passen-
ger to move to the rear seat, or
if that is not possible, move the
front passenger seat fully rear-
ward.
●When it is unavoidable to install
a forward-facing child restraint
system on the front passenger
seat, install the child restraint
system on the front passenger
seat in the proper order.
(  P.53)
●Do not modify or remove the
front seats.

461-1. For safe use
■Adult*1
WARNING
●Do not kick the front passenger
seat or subject it to severe
impact. Otherwise, the SRS
warning light may come on to
indicate a malfunction of the
front passenger occupant clas-
sification system. In this case,
contact your Toyota dealer
immediately.
●Child restraint systems installed
on the rear seat should not con-
tact the front seatbacks.
●Do not use a seat accessory,
such as a cushion and seat
cover, that covers the seat
cushion surface.
●Do not modify or replace the
upholstery of the front seat.
●Adjust the front passenger seat
so that the head restraint does
not touch the ceiling. If the head
restraint is left in contact with
the ceiling, the system may not
detect the front passenger prop-
erly, leading to improper opera-
tion of the airbags.
Front passenger occupant cl assification system condi-
tions and operation
Indicators/warn- ing lights
“PASSENGER AIR BAG ON” and
“PASSENGER AIR BAG OFF” indica- tor lights“PASSENGER AIR BAG ON”
SRS warning lightOff
Driver’s and front passenger’s seat belt reminder lightOff*2 or flashing*3
DevicesFront passenger airbagActivated

471-1. For safe use
1
For safety and security
■Child*4
■Child restraint system with infant*5
■Unoccupied
Indicators/warn-ing lights
“PASSENGER AIR BAG ON” and
“PASSENGER AIR BAG OFF” indica- tor lights“PASSENGER
AIR BAG OFF” or “PASSENGER
AIR BAG ON”
*4
SRS warning lightOff
Driver’s and front passenger’s seat belt reminder lightOff*2 or flashing*3
DevicesFront passenger airbagDeactivated or
activated
*4
Indicators/warn- ing lights
“PASSENGER AIR BAG ON” and
“PASSENGER AIR BAG OFF” indica- tor lights“PASSENGER
AIR BAG OFF”
*6
SRS warning lightOff
Driver’s and front passenger’s seat belt reminder lightOff*2 or flashing*3
DevicesFront passenger airbagDeactivated
Indicators/warn-ing lights
“PASSENGER AIR BAG ON” and
“PASSENGER AIR BAG OFF” indica- tor lights“PASSENGER
AIR BAG OFF”
SRS warning light
OffDriver’s and front passenger’s seat belt reminder light
DevicesFront passenger airbagDeactivated

481-1. For safe use
■System malfunction
*1: The system judges a person of adult size as an adult. When a smaller adult sits in the front passenger seat, the system may not recognize
them as an adult depending on their physique and posture.
*2: In the event the front passenger is wearing a seat belt.
*3: In the event the front passenger does not wear a seat belt.
*4: For some children, child in seat, child in booster seat or child in convert-
ible seat, the system may not recognize them as a child. Factors which
may affect this can be the physique or posture.
*5: Never install a rear-facing child rest raint system on the front passenger
seat. A forward-facing child restraint system should only be installed on
the front passenger seat w hen it is unavoidable. (P.54)
*6: In case the indicator light is not illu minated, consult this manual on how
to install the child restraint system properly. ( P.51)
Indicators/warn-
ing lights
“PASSENGER AIR BAG ON” and
“PASSENGER AIR BAG OFF” indica- tor lights“PASSENGER
AIR BAG OFF”
SRS warning light
OnDriver’s and front passenger’s seat belt reminder light
DevicesFront passenger airbagDeactivated

491-1. For safe use
1
For safety and security
Exhaust gas precau-
tions
Harmful substance to the
human body is included in
exhaust gases if inhaled.
WARNING
Exhaust gases contain harmful
carbon monoxide (CO), which is
colorless and odorless. Observe
the following precautions.
Failure to do so may cause
exhaust gases to enter the vehicle
and may lead to an accident
caused by light-headedness, or
may lead to death or a serious
health hazard.
■Important points while driving
●Keep the back door closed.
●If you smell exhaust gases in
the vehicle even when the back
door is closed, open the side
windows and have the vehicle
inspected at your Toyota dealer
as soon as possible.
■When parking
●If the vehicle is in a poorly venti-
lated area or a closed area,
such as a garage, stop the
hybrid system.
●Do not leave the vehicle with
the hybrid system operating for
a long time.
If such a situation cannot be
avoided, park the vehicle in an
open space and ensure that
exhaust fumes do not enter the
vehicle interior.
●Do not leave the hybrid system
operating in an area with snow
build-up, or where it is snowing.
If snowbanks build up around
the vehicle while the hybrid sys-
tem operating, exhaust gases
may collect and enter the vehi-
cle.
■Exhaust pipe
The exhaust system needs to be
checked periodically. If there is a
hole or crack caused by corro-
sion, damage to a joint or abnor-
mal exhaust noise, be sure to
have the vehicle inspected and
repaired by your Toyota dealer.

501-2. Child safety
1-2.Child safety
Riding with children
Observe the following pre-
cautions when children are
in the vehicle.
Use a child restraint system
appropriate for the child,
until the child becomes
large enough to properly
wear the vehicle’s seat belt.
It is recommended that chil-
dren sit in the rear seats to
avoid accidental contact
with the shift lever, wiper
switch, etc.
 Use the rear door child-pro-
tector lock or the window
lock switch to avoid children
opening the door while driv-
ing or operating the power
window accidentally.
( P.189, 229)
 Do not let small children
operate equipment which
may catch or pinch body
parts, such as the power
window, hood, back door,
seats, etc.
WARNING
■When children are in the vehi-
cle
Never leave children unattended
in the vehicle, and never allow
children to have or use the key.
Children may be able to start the
vehicle or shift the vehicle into
neutral. There is also a danger
that children ma y injure them-
selves by playing with the side
windows or other features of the
vehicle. In addition, heat build-up
or extremely cold temperatures
inside the vehicle can be fatal to
children.