2018 TOYOTA YARIS iA ECU

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YARIS iA_OM_OM99Q46z_(U)
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2-4. Steering WheelSteering Wheel.................. 112
2-5. Mirrors Mirrors ............................... 113
2-6. Windows Power Windows ................ 116
2-7. Security System Modification and Add-On Equipment ......... 119
Immobilizer System ........... 120
Theft Deterrent System ..... 122
2-8. Driving Tips Break-In Period ................. 125
Saving Fuel and Protection of the
Environment .................... 126
Hazardous Driving............. 127
Floor Mat ........................... 128
Rocking the Vehicle .......... 129
Winter Driving.................... 130
Driving In Flooded Area ................................ 133
Overloading ....................... 134
Driving on Uneven Road ............................... 135
2-9. Towing Trailer Towing ................... 136
Recreational Towing ......... 137 3-1. Start/Stop Engine
Ignition Switch ................... 140
Starting the Engine ............ 142
Turning the Engine Off ...... 147
3-2. Combination Meter and Display
Meters and Gauges ........... 148
Warning/Indicator Lights ............................... 156
3-3. Transaxle Manual Transaxle Operation......................... 160
Automatic Transaxle Controls ........................... 164
3-4. Switches and Controls Lighting Control ................. 175
Fog Lights .......................... 179
Turn and Lane-Change Signals............................. 180
Windshield Wipers and Washer ..................... 182
Rear Window Defogger.......................... 185
Hazard Warning Flasher ............................ 186
3-5. Brake Brake System .................... 187
Hill Launch Assist (HLA) .... 191
3When Driving

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YARIS iA_OM_OM99Q46z_(U)
1-1. Seats
Seat Precautions
When returning a rear seat to its original position, place the seat belt
in its normal position. Verify that t he seat belt pulls out and retracts.
WARNING
■Make sure the adjustable componen ts of a seat are locked in place
Adjustable seats and seatbacks that are not securely locked are dangerous.
In a sudden stop or collision, the seat or seatback could move, causing
injury. Make sure the adjustable components of the seat are locked in place
by attempting to slide the seat forward and backward and rocking the seat-
back.
■ Do not drive with the seatback unlocked
All of the seatbacks play an important role in your protection in a vehicle.
Leaving the seatback unlocked is dangerous as it can allow passengers to
be ejected or thrown around and baggage to strike occupants in a sudden
stop or collision, resulting in severe injury. After adjusting the seatback at
any time, even when there are no other passengers, rock the seatback to
make sure it is locked in place.
■ Adjust the driver’s seat only when the vehicle is stopped
Adjusting the driver’s seat while the vehicle is moving is dangerous. The
driver could lose control of the vehicle and have an accident.
■ Do not modify or replace the front seats
Modifying or replacing the front seats such as replacing the upholstery or
loosening any bolts is dangerous. The front seats contain air bag compo-
nents essential to the supplemental restraint system. Such modifications
could damage the supplemental restraint system and result in serious injury.
Consult your Toyota dealer if there is any need to remove or reinstall the
front seats.
■ Do not drive with damaged front seats
Driving with damaged front seats, such as seat cushions torn or damaged
down to the urethane, is dangerous. A collision, even one not strong
enough to inflate the air bags, could damage the front seats which contain
essential air bag components. If there was a subsequent collision, an air
bag may not deploy which could lead to injuries. Always have your Toyota
dealer inspect the front seats, front seat belt pretensioners and air bags
after a collision.

YARIS iA_OM_OM99Q46z_(U)
191-1. Seats
1
Essential Safety Equipment
WARNING
■Do not drive with either front seats reclined
Sitting in a reclined position while the vehicle is moving is dangerous
because you do not get the full protection from seat belts. During sudden
braking or a collision, you can slide under the lap belt and suffer serious
internal injuries. For maximum protection, sit well back and upright.
■ Do not place an object such as a cushion between the seatback and
your back
Putting an object such as a cushion between the seatback and your back is
dangerous because you will be unable to maintain a safe driving posture
and the seat belt cannot function at its full capacity in a collision, which
could result in a serious accident, injury or death.
■ Do not place objects under the seat
The object could get stuck and cause the seat to not be fixed securely, and
result in an accident.
■ Do not stack cargo high er than the seatbacks
Stacking luggage or other cargo higher than the seatbacks is dangerous.
During sudden braking or a collision, objects can fly around and become
projectiles that may hit and injure passengers.
■ Make sure luggage and cargo is secured before driving
Not securing cargo while driving is dangerous as it could move or be
crushed during sudden braking or a collision and cause injury.
■ Never allow a passenger to sit or stand on the folded seatback while
the vehicle is moving
Driving with a passenger on the folded seatback is dangerous. Allowing a
child to sit up on the folded seatback while the vehicle is moving is particu-
larly dangerous. In a sudden stop or even a minor collision, a child not in a
proper seat or child-restraint system and seat belt could be thrown forward,
back or even out of the vehicle resulting in serious injuries or death. The
child in the baggage area could be thrown into other occupants and cause
serious injury.
■ Never give the car keys to children an d do not allow them to play in the
vehicle
Playing with the folding rear seats is dangerous. Once the seatbacks are
back up, a child in the trunk would not be able to get out the way they had
entered. If you have small children, keep the seatbacks locked.

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YARIS iA_OM_OM99Q46z_(U)
1-1. Seats
Rear Seat
By lowering the rear seatbacks the luggage compartment space can
be expanded.
Split Folding the Seatback
WARNING
■Do not drive the vehicle with occu pants on folded down seatbacks or
in the luggag e compartment.
Putting occupants in the luggage compartment is dangerous because seat
belts cannot be fastened which could lead to serious injury or death during
sudden braking or a collision.
■ Do not allow children to play inside the vehicle with the seatbacks low-
ered.
Allowing children to play in the vehicle with the seatbacks folded down is
dangerous. If a child enters the luggage compartment and the seatbacks
were raised back up, the child may become trapped in the luggage com-
partment which could lead to an accident.
■ Tightly secure cargo in the luggag e compartment when it is trans-
ported with the seatbacks folded down.
Driving without tightly securing cargo and luggage is dangerous as it could
move and become an obstruction to dr iving during emergency braking or a
collision resulting in an unexpected accident.
■ When transporting cargo , do not allow the cargo to exceed the height
of the seatbacks.
Transporting cargo stacked higher than the seatbacks is dangerous as visi-
bility to the rear and sides of the vehicle is reduced which could interfere
with driving operations and lead to an accident.

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YARIS iA_OM_OM99Q46z_(U)
1-1. Seats
Make sure that the seat belt
passes through the seat belt
guide correctly and it is not
twisted, then raise the seatback
while preventing the seat belt
from being caught in the seat-
back.
Press the seatback rearward and lock it in place. After returning the
seatback to its upright position, make sure it is securely locked.
To return the seatback to its upright position
Seat belt guide
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WARNING
■When returning a seatback to its up right position, make sure the 3-
point seat belt is not caught in th e seatback and the 3-point seat belt is
not twisted.
If the seat belt is used while it is twisted and caught in the seatback, the
seat belt cannot function at its full capacity, which could cause serious injury
or death.
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YARIS iA_OM_OM99Q46z_(U)
291-1. Seats
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Essential Safety Equipment
WARNING
■Always drive with the head restrain ts installed when seats are being
used and make sure they are properly installed
● Driving with the head restraints not installed is dangerous. With no support
behind your head, your neck could be seriously injured in a collision.
● When installing a head restraint, make sure that it is installed correctly with
the front of the head restraint facing forward. If the head restraint is
installed incorrectly, it could detach from the seat during a collision and
result in injury.
● The head restraints on each of the front and rear seats are specialized to
each seat. Do not switch around the head restraint positions. If a head
restraint is not installed to its correct seat position, the effectiveness of the
head restraint during a collision will be compromised which could cause
injury.
■ After installing a head restraint, try lifting it to make sure that it does
not pull out
Driving with an unsecured head restraint is dangerous as the effectiveness
of the head restraint will be compromised which could cause it to unexpect-
edly detach from the seat.

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YARIS iA_OM_OM99Q46z_(U)
1-2. Seat Belt Systems
Seat Belt Precautions
All of the seat belt retractors are designed to keep the lap/shoulder
belts out of the way when not in use.
The driver’s seat belt has no prov isions for child-restraint systems and
has only an emergency locking mode. The driver may wear it comfort-
ably, and it will lock during a collision.
However, the front passenger’s seat and all rear lap/shoulder belt
retractors operate in two modes: emergency locking mode, and for
child-restraint systems, automatic locking mode. While we recom-
mend you put all children in the rear seats, if you must use the front
passenger seat for a child, slide t he front passenger seat as far back
as possible and make sure any child-r estraint system is secured prop-
erly.
Seat belts help to decrease the possibility of severe injury
during accidents and sudden st ops. Toyota recommends that
the driver and all passengers always wear seat belts.
WARNING
■ Always wear your seat belt and ma ke sure all occupants are properly
restrained
Not wearing a seat belt is extremely dangerous. During a collision, occu-
pants not wearing seat belts could hit someone or things inside the vehicle
or even be thrown out of the vehicle. They could be seriously injured or
even killed. In the same collision, occupants wearing seat belts would be
much safer.

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YARIS iA_OM_OM99Q46z_(U)
1-3. Child Restraint
Even if the front passenger air bag is shut off, Toyota strongly recom-
mends that children be properly restrained and child-restraint systems
of all kinds are properly secured on the rear seats which are the best
place for children.
For more details, refer to “Front passenger occupant classification
sensor” ( →P. 78).
Your Toyota is equipped with LATCH lower anchors for attachment of spe-
cially designed LATCH child-restraint systems in the rear seats. When using
these anchors to secure a child-restraint system, refer to “Using LATCH
Lower Anchor” (→P. 57).
WARNING
■Use the correct size child-restraint system
For effective protection in vehicle accidents and sudden stops, a child must
be properly restrained using a seat belt or child-restraint system depending
on age and size. If not, the child could be seriously injured or even killed in
an accident.
■ Follow the manufacturer’s instru ctions and always keep the child-
restraint system buckled down
An unsecured child-restraint system is dangerous. In a sudden stop or a
collision it could move causing serious injury or death to the child or other
occupants. Make sure any child-restraint system is properly secured in
place according to the child-restraint system manufacturer’s instructions.
When not in use, remove it from the vehicle or fasten it with a seat belt, or
latch it down to BOTH LATCH lower anchors for LATCH child-restraint sys-
tems and the corresponding tether anchor.
■ Always secure a child in a proper child-restraint system
Holding a child in your arms while the vehicle is moving is extremely dan-
gerous. No matter how strong the person may be, he or she cannot hold
onto a child in a sudden stop or collision and it could result in serious injury
or death to the child or other occupants. Even in a moderate accident, the
child may be exposed to air bag forces that could result in serious injury or
death to the child, or the child may be slammed into an adult, causing injury
to both child and adult.