ECU TOYOTA YARIS 2017 Service Manual

1173-2. Opening, closing and locking the doors
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Operation of each component
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■ Security feature
Vehicles without a smart entry & start system
If a door is not opened within approximately 30 seconds after the vehicle is
unlocked, the security feature automatically locks the vehicle again.
Vehicles with a smart entry & start system
If a door is not opened within approximately 30 seconds after the vehicle is
unlocked, the security feature automatically locks the vehicle again. (How-
ever, depending on the location of the electronic key, the key may be
detected as being in the vehicle. In this case, vehicle may be unlocked.)
■ When the door cannot be locked by the lock sensor (vehicles with a
smart entry & start system)
■ Door lock buzzer (vehicles with a smart entry & start system)
If an attempt to lock the doors is made when a door is not fully closed, a
buzzer sounds continuously. Fully close the door to stop the buzzer, and lock
the vehicle once more.
■ If the entry function (vehicles with a smart entry & start system) or the
wireless remote control (if equipped) does not operate properly
● Vehicles without a smart entry & start system: Use the key to lock and
unlock the doors. ( P. 116)
● Vehicles with a smart entry & start system: Use the mechanical key to lock
and unlock the doors. ( P. 486)
● Replace the key battery with a new one if it is depleted. (P. 402)
Use your thumb to push lock sensor.

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3
3-2. Opening, closing and locking the doors
Operation of each component
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Back door
◆Door lock switch
 P. 1 1 8
◆Entry function (vehicles with a smart entry & start system)
Carry the electronic key to enable this function.
Press the button to unlock
the door.
The door cannot be unlocked for
3 seconds after the door is
locked.
Press the button to lock the
door.
Check that the door is securely
locked.
◆Wireless remote control (if equipped)
 P. 1 1 5
The back door can be locked/unlocked and opened by the fol-
lowing procedures.
Unlocking and locking the back door
1
2

1233-2. Opening, closing and locking the doors
3
Operation of each component
YARIS_F_OM_Europe_OM52J20E
■Operation signals (vehicles with an entry function or wireless remote
control)
 P. 11 6
■ Security feature
 P. 11 7
■ Door lock buzzer (vehicles with a smart entry & start system)
 P. 11 7
■ Luggage compartment light
The luggage compartment lights turn on when the back door is opened.
■ If the smart entry & start system has been deactivated in a customized
setting (vehicles with a smart entry & start system)
Use the wireless remote control or mechanical key. ( P. 115, 486)
■ If the entry function (vehicles with a smart entry & start system) or the
wireless remote control (if equipped) does not operate properly
● Vehicles without a smart entry & start system: Use the key to lock and
unlock the back door. ( P. 116)
● Vehicles with a smart entry & start system: Use the mechanical key to
unlock the back door. ( P. 486)
● Replace the key battery with a new one if it is depleted. (P. 402)

1253-2. Opening, closing and locking the doors
3
Operation of each component
YARIS_F_OM_Europe_OM52J20E
WARNING
●If anyone is in the vicinity, make sure they are safe and let them know that
the back door is about to open or close.
● Use caution when opening or closing the back door in windy weather as it
may move abruptly in strong wind.
● Do not pull on the back door damper stay to close the back door, and do
not hang on the back door damper stay.
Doing so may cause hands to be caught or the back door damper stay to
break, causing an accident.
● If a bicycle carrier or similar heavy object is attached to the back door, it
may suddenly shut again after being opened, causing someone’s hands,
head or neck to be caught and injured. When installing an accessory part
to the back door, using a genuine Toyota part is recommended.
● The back door may suddenly shut if it is
not opened fully. It is more difficult to
open or close the back door on an
incline than on a level surface, so
beware of the back door unexpectedly
opening or closing by itself. Make sure
that the back door is fully open and
secure before using the luggage com-
partment.
● When closing the back door, take extra
care to prevent your fingers, etc., from
being caught.
● When closing the back door, make sure
to press it lightly on its outer surface. If
the back door handle is used to fully
close the back door, it may result in
hands or arms being caught.

1403-3. Adjusting the seats
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■After passengers have entered the vehicle (3-door models only)
Slide the seat backward and then lift the seatback. The seat will be set and
locked to its previous position automatically. If the seat cannot be slid back to
the previous position due to the rear passenger or luggage, the seat will be
locked in that position, disabling the seat position memory system.
To recall the previous position, lift the seatback lock release lever after
removing the luggage, or after having the passenger get out or sit properly so
that the seat can be slid back to the previous position. However, if you slide
the seat further backwards than previous position using the seat position
adjustment lever, the memory of previous position will be overwritten.
WARNING
■ When adjusting the seat position
● Take care when adjusting the seat position to ensure that other passen-
gers are not injured by the moving seat.
● Do not put your hands under the seat or near the moving parts to avoid
injury.
Fingers or hands may become jammed in the seat mechanism.
■ Seat adjustment
● Be careful that the seat does not hit passengers or luggage.
● To reduce the risk of sliding under the lap belt during a collision, do not
recline the seat more than necessary.
If the seat is too reclined, the lap belt may slide past the hips and apply
restraint forces directly to the abdomen, or your neck may contact the
shoulder belt, increasing the risk of death or serious injury in the event of
an accident.
Adjustments should not be made while driving as the seat may unexpect-
edly move and cause the driver to lose control of the vehicle.
● After adjusting the seat, make sure that the seat is locked in position.
● Never allow anyone to touch seatback lock release levers while the vehi-
cle is moving.
● If anyone is in the vicinity, make sure they are clear of the seat back path
and let them know that the seat is about to move.
■ After returning the seatback to the upright position
Make sure the seatback is securely locked by pushing it forward and rear-
ward. Failure to do so may result in death or serious injury.

1433-3. Adjusting the seats
3
Operation of each component
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WARNING
■When folding the rear seatbacks down
Observe the following precautions. Failure to do so may result in death or
serious injury.
● Do not fold the seatbacks down while driving.
● Stop the vehicle on level ground, set the parking brake and shift the shift
lever to P (Multidrive) or N (manual transmission).
● Do not allow anyone to sit on a folded seatback or in the luggage compart-
ment while driving.
● Do not allow children to enter the luggage compartment.
● Do not allow anyone to sit on the rear center seat if the rear right seat is
folded down, as the seat belt buckle for the rear center seat belt is then
concealed under the folded seat and cannot be used.
● Be careful not to catch your hand when folding the rear seatbacks.
● Depending on the position of the front seat, it may interfere when trying to
fold down the rear seatbacks. If this happens, adjust the position of the
front seat.
■ After returning the rear seatback to the upright position
Observe the following precautions. Failure to do so may result in death or
serious injury.
● Check that the seat belts are not twisted or caught in the seatback.
NOTICE
■Stowing the seat belts
The seat belts and the buckles must be stowed before you fold down the
rear seatbacks.
● Make sure that the seatback is securely
locked in position by lightly pushing it
back and forth.
If the seatback is not securely locked,
the red marking will be visible on the
seatback lock release knob. Make sure
that the red marking is not visible.

1463-4. Adjusting the steering wheel and mirrors
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Steering wheel
Hold the steering wheel and
push the lever down.
Adjust to the ideal position by
moving the steering wheel hori-
zontally and vertically.
After adjustment, pull the lever up
to secure the steering wheel.
To sound the horn, press on or
close to the mark.
Adjustment procedure
1
2
Horn

1473-4. Adjusting the steering wheel and mirrors
3
Operation of each component
YARIS_F_OM_Europe_OM52J20E
WARNING
■Caution while driving
Do not adjust the steering wheel while driving.
Doing so may cause the driver to mishandle the vehicle and cause an acci-
dent, resulting in death or serious injury.
■ After adjusting the steering wheel
Make sure that the steering wheel is securely locked.
Otherwise, the steering wheel may move suddenly, possibly causing an
accident and resulting in death or serious injury.

1674-1. Before driving
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Driving
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WARNING
■If you hear a squealing or scraping noise (brake pad wear indicators)
Have the brake pads checked and replaced by any authorized Toyota
dealer or repairer, or another dul y qualified and equipped professional as
soon as possible.
Rotor damage may result if the pads are not replaced when needed.
It is dangerous to drive the vehicle when the wear limits of the brake pads
and/or those of the brake discs are exceeded.
■ When the vehicle is stopped
● Do not race the engine.
If the vehicle is in any gear other than P (Multidrive) or N, the vehicle may
accelerate suddenly and unexpectedly, causing an accident.
● On vehicles with a Multidrive, in order to prevent accidents due to the vehi-
cle rolling away, always keep depressing the brake pedal while the engine
is running, and apply the parking brake as necessary.
● If the vehicle is stopped on an incline, in order to prevent accidents caused
by the vehicle rolling forward or backward, always depress the brake pedal
and securely apply the parking brake as needed.
● Avoid revving or racing the engine.
Running the engine at high speed while the vehicle is stopped may cause
the exhaust system to overheat, which could result in a fire if combustible
material is nearby.
■ When the vehicle is parked
● Do not leave glasses, cigarette lighters, spray cans, or soft drink cans in
the vehicle when it is in the sun.
Doing so may result in the following:
• Gas may leak from a cigarette lighter or spray can, and may lead to a
fire.
• The temperature inside the vehicle may cause the plastic lenses and
plastic material of glasses to deform or crack.
• Soft drink cans may rupture, causing the contents to spray over the
interior of the vehicle, and may also cause a short circuit in the vehicle’s
electrical components.
● Do not leave cigarette lighters in the vehicle. If a cigarette lighter is in a
place such as the glove box or on the floor, it may be lit accidentally when
luggage is loaded or the seat is adjusted, causing a fire.

1684-1. Before driving
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WARNING
●Do not attach adhesive discs to the windshield or windows. Do not place
containers such as air fresheners on the instrument panel or dashboard.
Adhesive discs or containers may act as lenses, causing a fire in the vehi-
cle.
● Do not leave a door or window open if the curved glass is coated with a
metallized film such as a silver-colored one. Reflected sunlight may cause
the glass to act as a lens, causing a fire.
● On vehicles with a Multidrive, always apply the parking brake, shift the
shift lever to P, stop the engine and lock the vehicle.
Do not leave the vehicle unattended while the engine is running.
When the vehicle is left without applying the parking brake even if the shift
lever is in P, it may start to move, leading to an accident.
● Do not touch the exhaust pipes while the engine is running or immediately
after turning the engine off.
Doing so may cause burns.
■ When taking a nap in the vehicle
Always turn the engine off. Otherwise, if you accidentally move the shift
lever or depress the accelerator pedal, this could cause an accident or fire
due to engine overheating. Additionally, if the vehicle is parked in a poorly
ventilated area, exhaust gases may collect and enter the vehicle, leading to
death or a serious health hazard.
■ When braking
● When the brakes are wet, drive more cautiously.
Braking distance increases when the brakes are wet, and this may cause
one side of the vehicle to brake differently than the other side. Also, the
parking brake may not securely hold the vehicle.
● If the power brake assist function does not operate, do not follow other
vehicles closely and avoid hills or sharp turns that require braking.
In this case, braking is still possible, but the brake pedal should be
depressed more firmly than usual. Also, the braking distance will increase.
Have your brakes fixed immediately.
● Do not pump the brake pedal if the engine stalls.
Each push on the brake pedal uses up the reserve for the power-assisted
brakes.
● The brake system consists of 2 individual hydraulic systems; if one of the
systems fails, the other will still operate. In this case, the brake pedal
should be depressed more firmly than usual and the braking distance will
increase.
Have your brakes fixed immediately.