ECU TOYOTA YARIS 2021 Service Manual

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YARIS(HB) Owner's Manual_Europe_MK0001_en
3-2. Opening, closing and locking the doors
Before driving
• Hand warmers made of metal
• Media such as CDs and DVDs
●When other wireless keys (that emit
radio waves) are being used nearby
●When carrying the electronic key
together with the following devices
that emit radio waves
• Another vehicle’s electronic key or a
wireless key that emits radio waves
• Personal computers or personal digi-
tal assistants (PDAs)
• Digital audio players
• Portable game systems
●If window tint with a metallic content or
metallic objects are attached to the
rear window
●When the electronic key is placed
near a battery charger or electronic
devices
●When the vehicle is parked in a pay
parking spot where radio waves are
emitted
If the doors cannot be locked/unlocked
using the smart entry & start system,
lock/unlock the doors by performing any
of the following:
●Bring the electronic key close to either
front door handle and operate the
entry function.
●Operate the wireless remote control.
If the doors cannot be locked/unlocked
using the above methods, use the
mechanical key. (→P.400)
If the engine cannot be started using the
smart entry & start system refer to
P.400.
■Note for the entry function
●Even when the electronic key is within
the effective range (detection areas),
the system may not operate properly
in the following cases:
• The electronic key is too close to the
window or outside door handle, near
the ground, or in a high place when
the doors are locked or unlocked.
• The electronic key is on the instru-
ment panel, luggage cover or floor, or
in the door pockets or glove box when the engine is started or engine switch
modes are changed.
●Do not leave the electronic key on top
of the instrument panel or near the
door pockets when exiting the vehicle.
Depending on the radio wave recep-
tion conditions, it may be detected by
the antenna outside the cabin and the
door will become lockable from the
outside, possibly trapping the elec-
tronic key inside the vehicle.
●As long as the electronic key is within
the effective range, the doors may be
locked or unlocked by anyone. How-
ever, only the doors detecting the
electronic key can be used to unlock
the vehicle.
●Even if the electronic key is not inside
the vehicle, it may be possible to start
the engine if the electronic key is near
the window.
●The doors may unlock or lock if a
large amount of water splashes on the
door handle, such as in the rain or in a
car wash when the electronic key is
within the effective range. (The doors
will automatically be locked after
approximately 30 seconds if the doors
are not opened and closed.)
●If the wireless remote control is used
to lock the doors when the electronic
key is near the vehicle, there is a pos-
sibility that the door may not be
unlocked by the entry function. (Use
the wireless remote control to unlock
the doors.)
●Touching the door lock or unlock sen-
sor while wearing gloves may prevent
lock or unlock operation.
●When the lock operation is performed
using the lock sensor, recognition sig-
nals will be shown up to two consecu-
tive times. After this, no recognition
signals will be given.
●If the door handle becomes wet while
the electronic key is within the effec-
tive range, the door may lock and
unlock repeatedly. In that case, follow
the following correction procedures to

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3-3. Adjusting the seats
■Front seats
1 Up
Pull the head restraint up.
2Down
Push the head restraint down while
WARNING
●Adjust the position of the front seats before folding down the rear seat-
backs so that the front seats do not interfere with the rear seatbacks when folding down the rear seat-
backs.
■After returning the rear seatback
to the upright position
●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 lever. Make
sure that the red mark is not visible.
●Check that the seat belts are not
twisted or caught in the seatback.
If the seat belt gets caught between
the seatback’s securing hook and
latch, it may damage the seat belt.
Head restraints
Head restraints are provided
for the front seats, rear outer
seats and rear center seat (if
equipped).
WARNING
■Head restraint precautions
Observe the following precautions
regarding the head restraints. Failure to do so may result in death or serious injury.
●Use the head restraints designed for each respective seat.
●Adjust the head restraints to the correct position at all times.
●After adjusting the head restraints, push down on them and make sure
they are locked in position.
●Do not drive with the head
restraints removed.
Adjusting a head restraint

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3-4. Adjusting the steering wheel and mirrors
3-4.Adjusting the steering whe el an d mirrors
1Hold the steering wheel and
push the lever down.
2 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.
Steering wheel
Adjustment procedure
WARNING
■Caution while driving
Do not adjust the steering wheel while driving.Doing so may cause the driver to mis-
handle 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. Also, the horn may not sound if the steering wheel is not
securely locked.
Horn

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4-1. Before driving
WARNING
■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 unex-
pectedly, causing an accident.
●Vehicles with a Multidrive: In order
to prevent accidents due to the vehicle 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 acci-dents 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 over-
heat, 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 follow-
ing:
• 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 fracture, caus-
ing 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.
●Do not attach adhesive discs to the windshield or windows. Do not
place containers such as air fresh- eners on the instrument panel or dashboard. Adhesive discs or con-
tainers may act as lenses, causing a fire in the vehicle.
●Do not leave a door or window open if the curved glass is coated with a metallized film such as a sil-
ver-colored one. Reflected sunlight may cause the glass to act as a lens, causing a fire.
●Always apply the parking brake, shift the shift lever to P (vehicles
with a Multidrive), stop the engine and lock the vehicle.Do not leave the vehicle unat-
tended while the engine is running. If the vehicle is parked with the shift lever in P but the parking brake is
not set, the vehicle may start to move, possibly leading to an acci-dent.
●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.

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4-1. Before driving
Driving
WARNING
■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 brake booster device does not
operate, do not follow other vehi- cles 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 indi-vidual 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.
■If the vehicle becomes stuck
Do not spin the wheels excessively
when a driven wheel is up in the air, or the vehicle is stuck in sand, mud, etc. This may damage the driveline
components or propel the vehicle for- ward or backward, causing an acci-dent.
NOTICE
■When driving the vehicle (vehi-cles with a Multidrive)
●Do not depress the accelerator and brake pedals at the same time during driving, as this may restrain
the engine output.
●Do not use the accelerator pedal or
depress the accelerator and brake pedals at the same time to hold the vehicle on a hill.
■When driving the vehicle (vehi-cles with a manual transmission)
●Do not depress the accelerator and brake pedals at the same time during driving, as this may restrain
the engine output.
●Do not shift gears unless the clutch
pedal is fully depressed. After shift- ing, do not release the clutch pedal abruptly. Doing so may damage the
clutch, transmission and gears.
●Observe the following precautions.
Failure to do so may cause exces- sive premature wear or damage to the clutch, eventually making it diffi-
cult to accelerate and start off from a stop. Have the vehicle inspected by any authorized Toyota retailer or
Toyota authorized repairer, or any reliable repairer.
• Do not rest your foot on the clutch pedal or depress it any time other than when shifting.
Doing so may cause clutch trouble.
• Do not use any gear other than the
1st gear when starting off and mov- ing forward.Doing so may damage the clutch.

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4-1. Before driving
Driving
Cargo and luggage
Take notice of the following
information about storage pre-
cautions, cargo capacity and
load:
WARNING
■Things that must not be carried in the luggage compartment
The following things may cause a fire if loaded in the luggage compartment:
●Receptacles containing gasoline
●Aerosol cans
■Storage precautions
Observe the following precautions. Failure to do so may prevent the ped-
als from being depressed properly, may block the driver’s vision, or may result in items hitting the driver or
passengers, possibly causing an acci- dent.
●Stow cargo and luggage in the lug-
gage compartment whenever pos- sible.
●Do not stack cargo and luggage in the luggage compartment higher than the seatbacks.
●When you fold down the rear seats, long items should not be placed
directly behind the front seats.
●Do not place cargo or luggage in or
on the following locations.
• At the feet of the driver
• On the front passenger or rear seats (when stacking items)
• On the luggage cover
• On the instrument panel
• On the dashboard
●Secure all items in the occupant compartment.
●Never allow anyone to ride in the luggage compartment. It is not designed for passengers. They
should ride in their seats with their seat belts properly fastened.
■Load and distribution
●Do not overload your vehicle.
●Do not apply loads unevenly.Improper loading may cause deteri-oration of steering or braking con-
trol which may cause death or serious injury.

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4-1. Before driving
Driving
■Break-in schedule
Toyota recommends that vehicles fitted with new power train components should not be used for towing trailers for
the first 800 km (500 miles).
■Safety checks before towing
●Check that the maximum load limit for
the towing hitch/bracket hitch ball is not exceeded. Bear in mind that the coupling weight of the trailer will add
to the load exerted on the vehicle. Also make sure that you will not be towing a load that exceeds the maxi-
mum permissible axle capacity.
●Ensure that the trailer load is secure.
●Supplementary outside rear view mir- rors should be added to the vehicle if
the traffic behind cannot be clearly seen with standard mirrors. Adjust the extending arms of these mirrors on
both sides of the vehicle so that they always provide maximum visibility of the road behind.
■Maintenance
●Maintenance must be performed more frequently when using the vehicle for
towing due to the greater weight bur- den placed on the vehicle compared to normal driving.
●Retighten all bolts securing the hitch-ing ball and bracket after towing for
approximately 1000 km (600 miles).
■If trailer sway occurs
One or more factors (crosswinds, pass- ing vehicles, rough roads, etc.) can
adversely affect handling of your vehicle and trailer, causing instability.
●If trailer swaying occurs:• Firmly grip the steering wheel. Steer straight ahead.
Do not try to control trailer swaying by turning the steering wheel.• Begin releasing the accelerator pedal
immediately but very gradually to reduce speed.
Do not increase speed. Do not apply
vehicle brakes.
If you make no extreme correction with
the steering or brakes, your vehicle and
trailer should stabilize (if enabled, Trailer
Sway Control can also help to stabilize
the vehicle and trailer.).
●After the trailer swaying has stopped: • Stop in a safe place. Get all occupants out of the vehicle.
• Check the tires of the vehicle and the trailer.• Check the load in the trailer.
Make sure the load has not shifted. Make sure the tongue weight is appro-priate, if possible.
• Check the load in the vehicle. Make sure the vehicle is not over-loaded after occupants get in.
If you cannot find any problems, the
speed at which trailer swaying occurred
is beyond the limit of your particular
vehicle-trailer combination. Drive at a
lower speed to prevent instability.
Remember that swaying of the towing
vehicle-trailer increases as speed
increases.
Your vehicle will handle differently
when towing a trailer. In order to
avoid accident, death or serious
injury, keep the following in mind
NOTICE
■When the rear bumper strength- ening material is aluminum
Ensure the steel bracket part does not
come directly in contact with that area.When steel and aluminum come into
contact, there is a reaction similar to corrosion, which will weaken the sec-tion concerned and may result in
damage. Apply a rust inhibitor to parts that will come in contact when attach-ing a steel bracket.
Guidance

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YARIS(HB) Owner's Manual_Europe_MK0001_en
4-1. Before driving
when towing:
■Checking connections
between trailer and lights
Stop the vehicle and check the
operation of the connection
between the trailer and lights after
driving for a brief period as well as
before starting off.
■Practicing driving with a cou-
pled trailer
zGet the feel for turning, stopping
and reversing with the trailer
coupled by practicing in an area
with no or light traffic.
zWhen reversing with a coupled
trailer, hold the section of the
steering wheel nearest to you
and rotate clockwise to turn the
trailer left or counterclockwise to
turn it right. Always rotate a little
at a time to prevent steering
error. Have someone guide you
when reversing to lessen the risk
of an accident.
■Increasing vehicle-to-vehicle
distance
At a speed of 10 km/h (6 mph), the
distance to the vehicle running
ahead of you should be equivalent
to or greater than the combined
length of your vehicle and trailer.
Avoid sudden braking that may
cause skidding. Otherwise, the
vehicle may spin out of control. This
is especially true when driving on
wet or slippery road surfaces.
■Sudden acceleration/steering
input/cornering
Executing sharp turns when towing
may result in the trailer colliding
with your vehicle. Decelerate well in
advance when approaching turns
and take them slowly and carefully
to avoid sudden braking.
■Important points regarding
turning
The wheels of the trailer will travel
closer to the inside of the curve
than the wheels of the vehicle. To
make allowance for this, take the
turns wider than you would nor-
mally do.
■Important points regarding
stability
Vehicle movement resulting from
uneven road surfaces and strong
crosswinds will affect handling. The
vehicle may also be rocked by
passing buses or large trucks. Fre-
quently check behind when moving
alongside such vehicles. As soon
as such vehicle movement occurs,
immediately start to decelerate
smoothly by slowly applying the
brakes. Always steer the vehicle
straight ahead while braking.
■Passing other vehicles
Consider the total combined length
of your vehicle and trailer and
ensure that the vehicle-to-vehicle
distance is sufficient before execut-
ing lane changes.

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4-3. Operating the lights and wipers
return it to its original position.
The high beams are on while the lever
is pulled toward you, however, after the
lever is returned to its original position,
the low beams remain on for a certain
amount of time. Afterwards, the Auto-
matic High Beam will be activated
again.
■Temporarily switching to the low
beams
It is recommended to switch to the low beams when the high beam may cause
problems or distress to other drivers or pedestrians nearby.
Rear fog light switch
Turns the rear fog light on
Releasing the switch ring returns it to
.
Operating the switch ring again turns
the rear fog light off.
Fog light switch
The fog lights secure excellent
visibility in difficult driving
conditions, such as in rain and
fog.
Operating instructions

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4-4. Refueling
4-4.Refuelin g
zTurn the engine switch off and
ensure that all the doors and
windows are closed.
z Confirm the type of fuel.
■Fuel types
→ P. 4 2 0
■Fuel tank opening for unleaded gasoline
To help prevent incorrect fueling, your vehicle has a fuel tank opening that only accommodates the special nozzle on
unleaded fuel pumps.
Opening the fuel tank
cap
Perform the following steps to
open the fuel tank cap:
Before refueling the vehicle
WARNING
■When refueling the vehicle
Observe the following precautions
while refueling the vehicle. Failure to do so may result in death or serious injury.
●After exiting the vehicle and before opening the fuel door, touch an
unpainted metal surface to dis- charge any static electricity. It is important to discharge static elec-
tricity before refueling because sparks resulting from static electric-ity can cause fuel vapors to ignite
while refueling.
●Always hold the grips on the fuel tank cap and turn it slowly to remove it.
A whooshing sound may be heard when the fuel tank cap is loosened. Wait until the sound cannot be
heard before fully removing the cap. In hot weather, pressurized fuel may spray out the filler neck
and cause injury.
●Do not allow anyone that has not
discharged static electricity from their body to come close to an open fuel tank.
●Do not inhale vaporized fuel.Fuel contains substances that are
harmful if inhaled.
●Do not smoke while refueling the
vehicle. Doing so may cause the fuel to ignite and cause a fire.
●Do not return to the vehicle or touch any person or object that is stati-
cally charged. This may cause static electricity to build up, resulting in a possible igni-
tion hazard.
■When refueling
Observe the following precautions to prevent fuel overflowing from the fuel tank:
●Securely insert the fuel nozzle into the fuel filler neck.
●Stop filling the tank after the fuel nozzle automatically clicks off.
●Do not top off the fuel tank.