ECU TOYOTA PRIUS PLUG-IN HYBRID 2023 User Guide

431-1. For safe use
1
Prius Plug-in Hybrid_OM_OM47F38E_(EE)
For safety and security
WARNING
■SRS airbag precautions
● Do not hang coat hangers or other hard objects on the coat hooks. All of
these items could become projectiles and may cause death or serious
injury, should the SRS curtain shield airbags deploy.
● If a vinyl cover is put on the area where the SRS knee airbag will deploy,
be sure to remove it.
● Do not use seat accessories which cover the parts where the SRS side
airbags inflate as they may interfere with inflation of the SRS airbags.
Such accessories may prevent the si de airbags from activating correctly,
disable the system or cause the side airbags to inflate accidentally, result-
ing in death or serious injury.
● Do not strike or apply significant levels of force to the area of the SRS air-
bag components or the front doors.
Doing so can cause the SRS airbags to malfunction.
● Do not touch any of the component parts immediately after the SRS air-
bags have deployed (inflated) as they may be hot.
● Do not attach anything to or lean any-
thing against areas such as the dash-
board, steering wheel pad and lower
portion of the instrument panel.
These items can become projectiles
when the SRS driver, front passenger
and knee airbags deploy.
● Do not attach anything to areas such as
a door, windshield, side windows, front
or rear pillar, roof side rail, and assist
grip.

451-1. For safe use
1
Prius Plug-in Hybrid_OM_OM47F38E_(EE)
For safety and security
■If the SRS airbags deploy (inflate)
● Slight abrasions, burns, bruising etc., may be sustained from SRS airbags,
due to the extremely high speed deployment (inflation) by hot gases.
● A loud noise and white powder will be emitted.
● Parts of the airbag module (steering wheel hub, airbag cover and inflator) as
well as the front seats, parts of the front and rear pillars, and roof side rails,
may be hot for several minutes. The airbag itself may also be hot.
● The windshield may crack.
● The hybrid system will be stopped and fuel supply to the engine will be
stopped. ( P. 99)
● The emergency flashers will turn on automatically. (P. 648)
■ SRS airbag deployment conditions (SRS front airbags)
● The SRS front airbags will deploy in the event of an impact that exceeds the
set threshold level (the level of force corresponding to an approximately 20 -
30 km/h [12 - 18 mph] frontal collision with a fixed wall that does not move or
deform).
However, this threshold velocity will be considerably higher in the following
situations:
• If the vehicle strikes an object, such as a parked vehicle or sign pole,
which can move or deform on impact
• If the vehicle is involved in an underride collision, such as a collision in
which the front of the vehicle “underrides”, or goes under, the bed of a
truck
● Depending on the type of collision, it is possible that only the seat belt pre-
tensioners will activate.
■ SRS airbag deployment conditions (SRS side and curtain shield airbags)
● The SRS side and curtain shield airbags will deploy in the event of an
impact that exceeds the set threshold level (the level of force corresponding
to the impact force produced by an approximately 1500 kg [3300 lb.] vehicle
colliding with the vehicle cabin from a direction perpendicular to the vehicle
orientation at an approximate speed of 20 - 30 km/h [12 - 18 mph]).
● Both SRS curtain shield airbags may also deploy in the event of a severe
frontal collision.

471-1. For safe use
1
Prius Plug-in Hybrid_OM_OM47F38E_(EE)
For safety and security
■Types of collisions that may not deploy the SRS airbags
(SRS side and curtain shield airbags)
The SRS side and curtain shield airbags may not activate if the vehicle is
subjected to a collision from the side at certain angles, or a collision to the
side of the vehicle body other than the passenger compartment.
The SRS side airbags do not generally inflate if the vehicle is involved in a
frontal or rear collision, if it rolls ov er, or if it is involved in a low-speed side
collision.
The SRS curtain shield airbags do not generally inflate if the vehicle is
involved in a rear collision, if it rolls over, or if it is involved in a low-speed side
or low-speed frontal collision.
● Collision from the side to the vehicle
body other than the passenger compart-
ment
● Collision from the side at an angle
● Collision from the front
● Collision from the rear
● Vehicle rollover
● Collision from the rear
● Vehicle rollover

491-1. For safe use
1
Prius Plug-in Hybrid_OM_OM47F38E_(EE)
For safety and security
●The portion of the front pillars, rear pil-
lars or roof side rail garnishes (padding)
containing the SRS curtain shield air-
bags inside is scratched, cracked, or
otherwise damaged.

511-2. Child safety
1
For safety and security
Prius Plug-in Hybrid_OM_OM47F38E_(EE)
Airbag manual on-off system
“PASSENGER AIR BAG” indi-
cator
The “ON” indicator light turns on
when the airbag system is on, and
about after 60 seconds it goes off
(only when the power switch is in
ON mode).
Airbag manual on-off switch
This system deactivates the front passenger airbag.
Only deactivate the airbag when using a child restraint system
on the front passenger seat.
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531-2. Child safety
1
For safety and security
Prius Plug-in Hybrid_OM_OM47F38E_(EE)
Riding with children
●It is recommended that children sit in the rear seats to avoid acci-
dental contact with the shift lever, wiper switch etc.
● Use the rear door child-protector lock or the window lock switch to
avoid children opening the door while driving or operating the
power window accidentally. ( P. 276, 303)
● Do not let small children operate equipment which may catch or
pinch body parts, such as the power window, hood, back door,
seats etc.
Observe the following precautions when children are in the vehi-
cle.
Use a child restraint system appropriate for the child, until the
child becomes large enough to properly wear the vehicle’s seat
belt.
WARNING
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 may injure themselves 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.

551-2. Child safety
1
Prius Plug-in Hybrid_OM_OM47F38E_(EE)
For safety and security
WARNING
■When a child is riding
Observe the following precautions.
Failure to do so may result in death or serious injury.
● For effective protection in automobile accidents and sudden stops, a child
must be properly restrained, using a seat belt or child restraint system
which is correctly installed. For inst allation details, refer to the operation
manual enclosed with the child restraint system. General installation
instructions are provided in this manual.
● Toyota strongly urges the use of a proper child restraint system that con-
forms to the weight and size of the child, installed on the rear seat. Accord-
ing to accident statistics, the child is safer when properly restrained in the
rear seat than in the front seat.
● Holding a child in your or someone else’s arms is not a substitute for a
child restraint system. In an accident, the child can be crushed against the
windshield or between the holder and the interior of the vehicle.
■ Handling the child restraint system
If the child restraint system is not properly fixed in place, the child or other
passengers may be seriously injured or even killed in the event of sudden
braking, sudden swerving, or an accident.
● If the vehicle were to receive a strong impact from an accident, etc., it is
possible that the child restraint system has damage that is not readily visi-
ble. In such cases, do not reuse the restraint system.
● Depending on the child restraint system, installation may be difficult or
impossible. In those cases, check whether the child restraint system is
suitable for installment in the vehicle ( P. 59). Be sure to install and
observe the usage rules after carefully reading the child restraint system
fixing method in this manual, as well as the operation manual enclosed
with the child restraint system.
● Keep the child restraint system properly secured on the seat even if it is
not in use. Do not store the child restraint system unsecured in the pas-
senger compartment.
● If it is necessary to detach the child restraint system, remove it from the
vehicle or store it securely in the luggage compartment.

571-2. Child safety
1
Prius Plug-in Hybrid_OM_OM47F38E_(EE)
For safety and security
WARNING
■When using a child restraint system
Observe the following precautions.
Failure to do so may result in death or serious injury.
● Never use a rear-facing child restraint
system on the front passenger seat
when the airbag manual on-off switch is
on. ( P. 51)
The force of the rapid inflation of the
front passenger airbag can cause death
or serious injury to children in the event
of an accident.
● There is a label(s) on the passenger
side sun visor, indicating it is forbidden
to attach a rear-facing child restraint
system to the front passenger seat.
Details of the label(s) are shown in the
illustration below.

591-2. Child safety
1
Prius Plug-in Hybrid_OM_OM47F38E_(EE)
For safety and security
■Child restraint system compatibility for each seating position
Compatibility of each seating position with child restraint systems
( P. 61) displays the type of child restraint systems that can be
used and possible seating positions for installation using symbols.
Also, the recommended child restraint system that is suitable for
your child can be selected.
Otherwise, check [Recommended child restraint systems informa-
tion] for recommended child restraint systems. ( P. 6 6 )
Check the selected child restraint system together with the follow-
ing [Before confirming the compatibility of each seating position
with child restraint systems].
■Before confirming the compatibility of each seating position
with child restraint systems
Checking the child restraint system standards.
Use a child restraint system that conforms to UN(ECE) R44*1 or
UN(ECE) R129*1, 2.
The following approval mark is displayed on child restraint sys-
tems which are conformed.
Check for an approval mark attached to the child restraint sys-
tem.
Example of the displayed
regulation number
UN(ECE) R44 approval
mark*3
The weight range of the
child who is applicable for
an UN(ECE) R44 approval
mark is indicated.
UN(ECE) R129 approval
mark*3
The height range of the
child who is applicable as
well as available weights
for an UN(ECE) R129
approval mark is indicated.
Child restraint system compatibility for each seating position
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611-2. Child safety
1
Prius Plug-in Hybrid_OM_OM47F38E_(EE)
For safety and security
■Compatibility of each seating position with child restraint sys-
tems
Left-hand drive vehiclesRight-hand drive vehicles
Deactivation of front passenger airbag.
Activation of front passenger airbag.
Never use a rearward-facing child restraint system on the front
passenger seat when the airbag manual on-off switch is on.
Suitable for “universal” category child restraint system fixed with
the seat belt.
Suitable for forward-facing “universal” category child restraint sys-
tem fixed with the seat belt.
Suitable for recommended child restraint systems given on recom-
mended child restraint systems information ( P. 6 6 ) .
Suitable for i-Size and ISOFIX child restraint system.
Includes a top tether anchorage point.
Not suitable for child restraint system.