ECU TOYOTA COROLLA HATCHBACK 2020 (in English) User Guide

311-1. For safe use
COROLLA H/B_U
1
For safety and security
Airbag sensor assembly
Your vehicle is equipped with ADVANCED AIRBAGS designed
based on the US motor vehicle safety standards (FMVSS208). The
airbag sensor assembly (ECU) cont rols airbag deployment based on
information obtained from the sensors etc. shown in the system
components diagram above. This in formation includes crash sever-
ity and occupant information. As the airbags deploy, a chemical
reaction in the inflators quickly fills the airbags with non-toxic gas to
help restrain the motion of the occupants.
■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 (steer-
ing 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. T he airbag itself
may also be hot.
●The windshield may crack.
●The interior lights will turn on auto-
matically. ( P.395)
●The emergency flashers will be
turned on automatically. ( P.460)
●For Safety Connect subscribers, if
any of the followin g situations
occur, the system is designed to
send an emergency call to the
response center, notifying them of
the vehicle’s location (without
needing to push the “SOS” button)
and an agent will attempt to speak
with the occupants to ascertain
the level of emergency and assis-
tance required. If the occupants
are unable to communicate, the
agent automatically treats the call
as an emergency and helps to dis-
patch the necessary emergency
services. ( P.58) • An SRS airbag is deployed.
• A seat belt pretensioner is acti-
vated.
• The vehicle is involved in a severe rear-end collision.
■SRS airbag deployment condi-
tions (SRS front airbags)
●The SRS front airbags will deploy
in the event of an impact that
exceeds the set threshold level
(the level of forc e 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 follow-
ing 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 colli-
sion in which the front of the vehi-
cle “underrides”, or goes under,
the bed of a truck
●Depending on the type of collision,
it is possible that only the seat belt
pretensioners 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 airbags for the front
passenger may deploy if luggage
is put in the seat, even if the seat
is unoccupied.

331-1. For safe use
COROLLA H/B_U
1
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 air-
bags may not activate if the vehicle
is subjected to a c ollision from the
side at certain angl es, or a collision
to the side of the vehicle body other
than the passenger compartment.
●Collision from the s ide to the vehi-
cle body other than the passenger
compartment
●Collision from the s ide at an angle
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 fron tal collision.
●Collision from the rear
●Pitching end over end
■When to contact your Toyota
dealer
In the following ca ses, the vehicle
will require inspecti on and/or repair.
Contact your Toyota dealer as soon
as possible.
●Any of the SRS airbags have
been inflated.
●The front of the v ehicle is dam-
aged or deformed, or was
involved in an accident that was not severe enough to cause the
SRS front airbags to inflate.
●A portion of a door or its surround-
ing area is damaged, deformed or
has had a hole made in it, or the
vehicle was involved in an acci-
dent that was not severe enough
to cause the SRS side and curtain
shield airbags to inflate.
●The pad section of the steering
wheel, dashboard near the front
passenger airbag or lower portion
of the instrument panel is
scratched, cracked, or otherwise
damaged.
●The seat cushion surface is
scratched, cracked, or otherwise
damaged.

351-1. For safe use
COROLLA H/B_U
1
For safety and security
WARNING
●If the seat belt extender has
been connected to the front
seat belt buckles but the seat
belt extender has not also been
fastened to the latch plate of the
seat belt, the SRS front airbags
will judge that the driver and
front passenger are wearing the
seat belt even though the seat
belt has not been connected. In
this case, the SRS front airbags
may not activate correctly in a
collision, resulting in death or
serious injury i n the event of a
collision. Be sure to wear the
seat belt with the seat belt
extender.
●The SRS front passenger air-
bag also deploys with consider-
able 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 as far from the
airbag as possible with the seat-
back adjusted, so the front pas-
senger sits 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. 4 5 )
●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 unit or sit on the knees of
a front passenger.
●Do not allow the front seat occu-
pants to hold items on their
knees.

371-1. For safe use
COROLLA H/B_U
1
For safety and security
WARNING
●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 the areas where the SRS air-
bags are stored, such as the
steering wheel pad and front
and rear pillar ga rnishes, are
damaged or cracked, have
them 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 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
(inflate) accidentally, causing
death or serious injury.
●Installation, removal, disassem-
bly and repair of the SRS air-
bags
●Repairs, modifications, removal
or replacement of the steering
wheel, instrument panel, dash-
board, seats or seat upholstery,
front, side and rear pillars, roof
side rails, front door panels,
front door trims or front door
speakers
●Modifications to the front door
panel (such as making a hole in
it)
●Repairs or modifications of the
front fender, front bumper, or
side of the occupant compart-
ment
●Installation of a grille guard (bull
bars, kangaroo bar, etc.), snow
plows, winches or roof luggage
carrier
●Modifications to the vehicle’s
suspension system
●Installation of electronic devices
such as mobile t wo-way radios
and CD players
●Modifications to your vehicle for
a person with a physical disabil-
ity

391-1. For safe use
COROLLA H/B_U
1
For safety and security
WARNING
●Make sure the “AIR BAG OFF”
indicator light is not illuminated
when using the seat belt
extender for the front passenger
seat. If the “AIR BAG OFF” indi-
cator light is illuminated, discon-
nect the extender tongue from
the seat belt buckle, and recon-
nect the seat belt. Reconnect
the seat belt extender after
making sure the “AIR BAG ON”
indicator light is illuminated. If
you use the seat belt extender
while the “AIR BAG OFF” indi-
cator light is illuminated, the
SRS airbags for the front pas-
senger may not activate, which
could cause death or serious
injury in the ev ent of a collision.
●Do not apply a heavy load to the
front passenger seat or equip-
ment (e.g. seatback 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 rea r 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 t he front passen-
ger seatback so far that it
touches the rear seat. This may
cause the “AIR BAG OFF” indi-
cator 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 the
seatback to a position where it
does not touch the rear seat.
Keep the front passenger seat-
back as upright as possible
when the vehicle is moving.
Reclining the seatback exces-
sively may lessen the effective-
ness of the seat belt system.
●If an adult sits i n the front pas-
senger seat, the “AIR BAG ON”
indicator light i s illuminated. If
the “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 “AIR BAG OFF” indicator
still remains illumi nated, either
ask the passenger to move to
the rear seat, or if that is not
possible, move the front pas-
senger seat fully rearward.
●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. 4 7 )
●Do not modify or remove the
front seats.
●Do not kick the front passenger
seat or subject it to severe
impact. Otherwise, the SRS
warning light m ay come on to
indicate a malfu nction of the
front passenger occupant clas-
sification system. In this case,
contact your Toyota dealer
immediately.

411-1. For safe use
COROLLA H/B_U
1
For safety and security
■Child restraint system with infant*5
■Unoccupied
■There is a malfunction in the system
*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 passenge r does not wear a seat belt.
*4: For some children, child in seat, child in booster seat or chi ld in convert-
Indicator/warning
light
“AIR BAG ON” and “AIR BAG OFF” indicator lights“AIR BAG OFF”*6
SRS warning lightOff
Front passenger’s seat belt reminder lightOff*2 or flashing*3
Devices
Front passenger airbag
DeactivatedFront passenger seat cushion air- bag
Indicator/warning light
“AIR BAG ON” and “AIR BAG OFF” indicator lights“AIR BAG OFF”
SRS warning light
OffFront passenger’s seat belt reminder light
Devices
Front passenger airbag
DeactivatedFront passenger seat cushion air- bag
Indicator/warning light
“AIR BAG ON” and “AIR BAG OFF” indicator lights“AIR BAG OFF”
SRS warning light
OnFront passenger’s seat belt reminder light
Devices
Front passenger airbag
DeactivatedFront passenger seat cushion air- bag

431-1. For safe use
COROLLA H/B_U
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 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 ba
ck
d

oor is closed, open the win-
dows 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 are
a,s

uch as a garage, stop the
engine.
●Do not leave the vehicle with
the engine on for a long time.
If such a situation cann
ot be
avoide

d, park the vehicle in an
open space and ensure that
exhaust fumes do not enter the
vehicle interior.
●Do not leave the engine running
in an area with snow build-
up,o

r where it is snowing. If snow-
banks build up around the vehi-
cle while the engine is running
,exhaust

gases may collect and
enter the vehicle.
■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.

451-2. Child safety
COROLLA H/B_U
1
For safety and security
Points to remember: P.45
Child restraint system: P.47
When using a child restraint sys-
tem: P.47
Child restraint system installa-
tion method
• Fixed with a seat belt: P.49
• Fixed with a child restraint LATCH anchor: P.54
• Using an anchor bracket (for top tether strap): P.55 The laws of all 50 states of the
U.S.A. as well as Canada now
require the use of child restraint
systems.

Prioritize and observe the
warnings, as well as the laws
and regulations for child
restraint systems.
 Use a child restraint system
until the child becomes large
enough to properly wear the
vehicle’s seat belt.
 Choose a child restraint sys-
tem that suits your vehicle
and is appropriate to the age
and size of the child.
Child restraint sys-
tems
Before installing a child
restraint system in the vehi-
cle, there are precautions
that need to be observed,
different types of child
restraint systems, as well as
installation methods, etc.,
written in this manual.
Use a child restraint system
when riding with a small
child that cannot properly
use a seat belt. For the
child’s safety, install the
child restraint system to a
rear seat. Be sure to follow
the installation method that
is in the operation manual
enclosed with the restraint
system.
Table of contents
Points to remember
WARNING
■When a child is riding
Observe the following precau-
tions.
Failure to do so may result in
death or serious injury.
●For effective protection in auto-
mobile accidents and sudden
stops, a child must be properly
restrained, using a seat belt or
child restraint system which is
correctly installe d. For installa-
tion details, refer to the opera-
tion manual enclosed with the
child restraint system. General
installation instruction is pro-
vided in this manual.

461-2. Child safety
COROLLA H/B_U
WARNING
●Toyota strongly urges the use of
a proper child restraint system
that conforms to the weight and
size of the child, installed on the
rear seat. According 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 some-
one else’s arms is not a substi-
tute 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 seri-
ously 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 possib le that the child
restraint system has damage
that is not readily visible. 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 system is properly secured.
●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 passenger
compartment.
●If it is necessa ry to detach the
child restraint system, remove it
from the vehicle or store it
securely in the luggage com-
partment.

471-2. Child safety
COROLLA H/B_U
1
For safety and security
■Types of child restraint system installation methods
Confirm with the operation manual enclosed with the child restr aint
system about the installation of the child restraint system.
■When installing a child
restraint system to a front
passenger seat For the safety of a child, install
child restraint systems to a rear
seats. When installing child
restraint system to a front pas-
senger seat is unavoidable,
adjust the seat as follows and
Child restraint system
Installation methodPage
Seat belt attachmentP. 4 9
Child restraint LATCH
anchors attachmentP. 5 4
Anchor brackets (for
top tether strap) attach- ment
P. 5 5
When using a child
restraint system