2020 TOYOTA PRIUS C ECU

471-1. For safe use
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For safety and security
PRIUS c_U
■If the SRS airbags deploy (inflate)
●Slight abrasions, burns, bruising etc., may be sustained from S RS airbags,
due to the extremely high speed deployment (inflation) by hot g ases.
● A loud noise and white powder will be emitted.
● Parts of the airbag module (steering wheel hub, airbag cover an d 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 h ot.
● The windshield may crack.
■ SRS airbag deployment condi tions (SRS front airbags)
● The SRS front airbags will deploy in the event of an impact tha t exceeds the
set threshold level (the level of force corresponding to an approximately 12 -
18 mph [20 - 30 km/h] 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 th e seat belt pre-
tensioners will activate.
● The SRS front airbags for the front passenger will not activate if there is no
passenger sitting in the front passenger seat. However, the SRS front air-
bags for the front passenger may deploy if luggage is put in the seat, even if
the seat is unoccupied.
● The SRS seat cushion airbag on the front passenger seat will not operate if
the occupant is not wearing a seat belt.
■ SRS airbag deployment conditions (SRS side and curtain shield a irbags)
● The SRS side and curtain shield airbags will deploy in the even t of an
impact that exceeds the set threshold level (the level of force corresponding
to the impact force produced by an approximately 3300 lb. [1500 kg] vehicle
colliding with the vehicle cabin from a direction perpendicular to the vehicle
orientation at an approximate speed of 12 - 18 mph [20 - 30 km/ h]).
● Both SRS curtain shield airbags will deploy in the event of veh icle rollover.
● Both SRS curtain shield airbags will deploy in the event of a s evere frontal
collision.

491-1. For safe use
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For safety and security
PRIUS c_U■
Types of collisions that may not deploy the SRS airbags (SRS si de 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 over, or if it is involv ed 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 pitches end over end, 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
● Pitching end over end

511-1. For safe use
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For safety and security
PRIUS c_U●
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.

531-1. For safe use
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For safety and security
PRIUS c_U■
Adult*1
■Child*4
Condition and operation in the front passenger occupant classi-
fication system
Indicator/
warning light
“AIR BAG ON” and “AIR BAG OFF” indicator lights“AIR BAG ON”
SRS warning lightOff
Seat belt reminder light
Off*2
or
flashing
*3
Devices
Front passenger airbagActivated
Seat cushion airbag in the front passenger sideActivated*2
or
deactivated
*3
Indicator/
warning light
“AIR BAG ON” and “AIR BAG OFF” indicator lights“AIR BAG OFF”
or
“AIR BAG ON”
*4
SRS warning lightOff
Seat belt reminder light
Off*2
or
flashing
*3
Devices
Front passenger airbagDeactivated or activated
*4
Seat cushion airbag in the front passenger sideDeactivated or
activated
*4, 2

551-1. For safe use
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For safety and security
PRIUS c_U
*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 him/
her as an adult depending on his/her 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 chi ld in convertible
seat, the system may not recognize him/her as a child. Factors which may
affect this can be the physique or posture.
*5: Never install a rear-facing child restraint system on the front passenger seat. A forward-facing child restraint system should only be in stalled on the
front passenger seat when it is unavoidable. ( P. 59)
*6: In case the indicator light is not illuminated, consult this m anual on how to
install the child restraint system properly. ( P. 61)
WARNING
■Front passenger occupant classification system precautions
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 le ft inserted
into the buckle before someone sits in the front passenger seat .
● Make sure the “AIR BAG OFF” indicator light is not illuminated when using
the seat belt extender for the front passenger seat. If the “AI R BAG OFF”
indicator light is illuminated, disconnect the extender tongue from the seat
belt buckle, and reconnect the seat belt. Reconnect the seat be lt extender
after making sure the “AIR BAG ON” indicator light is illuminat ed. If you
use the seat belt extender while the “AIR BAG OFF” indicator li ght is illumi-
nated, the SRS airbags for the passenger may not activate corre ctly,
which could cause death or serious injury in the event of a col lision.
● Do not apply a heavy load to the front passenger seat or equipm ent. (e.g.
seatback pocket)
● Do not put weight on the front passenger seat by putting your hands or
feet on the front passenger seat seatback from the rear passeng er seat.
● Do not let a rear passenger lift the front passenger seat with their feet or
press on the seatback with their legs.
● Do not put objects under the front passenger seat.

571-1. For safe use
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For safety and security
PRIUS c_U
Exhaust gas precautions
Harmful substance to the human body is included in exhaust
gases if inhaled.
WARNING
Exhaust gases include harmful carbon monoxide (CO), which is colorless and
odorless. Observe the following precautions.
Failure to do so may cause exhaust gases 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 do or is
closed, open the windows and have the vehicle inspected at your Toyota
dealer as soon as possible.
■ When parking
● If the vehicle is in a poorly ventilated area or a closed area, such as a
garage, stop the hybrid system.
● Do not leave the vehicle with the hybrid system on for a long t ime.
If such a situation cannot be avoided, park the vehicle in an o pen 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 w hile the
hybrid system is 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 corrosion, damage to a joint or abnormal exhaust noise, be
sure to have the vehicle inspected and repaired by your Toyota dealer.

591-2. Child safety
1
For safety and security
PRIUS c_U
Points to remember...................................................................... P. 59
Child restraint system ......................................... ......................... P. 61
When using a child restraint system ............................ ................ P. 62
Child restraint system installation method • Fixed with a seat belt ........................................ ....................... P. 65
• Fixed with a child restraint LATCH anchor ..................... .......... P. 71
• Using an anchor bracket (for t op tether strap) ......................... P. 74
The laws of all 50 states of the U.S.A. as well as Canada now r equire
the use of child r estraint systems.
● Prioritize and observe the warnings, as well as the laws and re gula-
tions for child res traint systems.
● Use a child restraint system u ntil the child becomes large enou gh to
properly wear the vehicle’s seat belt.
● Choose a child restraint system that suits your vehicle and is appro-
priate to the age and size of the child.
Child restraint systems
Before installing a child restraint system in the vehicle, ther e are
precautions that need to be observed, different types of child
restraint systems, as well as in stallation methods, etc., written in
this manual.
Use a child restraint system when riding with a small child tha t can-
not properly use a seat belt. For the child’s safety, install the child
restraint system to a rear seat. Be sure to follow the installa tion
method that is in the operation manual enclosed with the restra int
system.
Table of contents
Points to remember

601-2. Child safety
PRIUS c_U
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 sto ps, a child
must be properly restrained, using a seat belt or child restrai nt system
which is correctly installed. For installation details, refer t o the operation
manual enclosed with the child restraint system. General instal lation
instruction is provided in this manual.
● Toyota strongly urges the use of a proper child restraint syste m that con-
forms to the weight and size of the child, installed on the rea r 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 substit ute 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, t he 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.
● Make sure you have complied with all installation instructions provided
with the child restraint system manufacturer and that the syste m is prop-
erly secured.
● Keep the child restraint system properly secured on the seat ev en 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.