ECU TOYOTA YARIS 2022 Workshop Manual

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4-1. Before 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).
Your vehicle will handle differently
when towing a trailer. In order to
avoid accident, death or serious
injury, keep the following in mind
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
 Get the feel for turning, stopping
and reversing with the trailer
coupled by practicing in an area
with no or light traffic.
 When 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.
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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4-1. Before driving
Driving
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.
■Transmission information
To maintain engine braking effi-
ciency and charging system perfor-
mance when using engine braking,
do not use the transmission in D.
( P.181)
■If the engine overheats
Towing a loaded trailer up a long,
steep incline in temperatures
exceeding 30°C (85°F) may result
in the engine overheating. If the
engine coolant temperature gauge
indicates that the engine is over-
heating, turn the air conditioning off
immediately, leave the road and
stop the vehicle in a safe place.
( P.414)
■When parking the vehicle
Always place wheel chocks under
the wheels of both the vehicle and
trailer. Firmly set the parking brake
and shift the shift lever to P.
WARNING
F o l l o w a l l t h e i n s t r u c t i o n s d e s c r i b e d i n
this section. Failure to do so could cause an accident resulting in death or serious injury.
■Trailer towing precautions
When towing, make sure that none of
the weight limits are exceeded. ( P.168)

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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 di fficult driving
conditions, such as in rain and
fog.
Operating instructions

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4-4. Refueling
4-4.Refuelin g
Turn the power switch off and
ensure that all the doors and
windows are closed.
 Confirm the type of fuel.
■Fuel types
 P. 4 3 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.

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4-5. Using the driving support systems
Approximately 3 m (9.8 ft.) to 60 m (197 ft.) from the rear bumper*2
*1: The area between the side of the vehicle and 0.5 m (1.6 ft.) from the side of the
vehicle cannot be detected.
*2: The greater the difference in speed between your vehicle and t he detected vehi-
cle is, the farther away the vehicle will be detected, causing the outside rear view
mirror indicator to illuminate or flash.
■The Blind Spot Monitor is opera- tional when
The Blind Spot Monitor is operational when all of the following conditions are met:
●The Blind Spot Monitor is on.
●The shift lever is in a position other than R.
●The vehicle speed is greater than approximately 16 km/h (10 mph).
■The Blind Spot Monitor will detect a vehicle when
The Blind Spot Monitor will detect a vehicle present in the detection area in the following situations:
●A vehicle in an adjacent lane over-takes your vehicle.
●You overtake a vehicle in adjacent lane slowly.
●Another vehicle enters the detection area when it changes lanes.
■Conditions under which the system
will not detect a vehicle
The Blind Spot Monitor is not designed to detect the following types of vehicles
and/or objects:
●Small motorcycles, bicycles, pedestri-
ans, etc.*
●Vehicles traveling in the opposite
direction
●Guardrails, walls, signs, parked vehi-
cles and similar stationary objects*
●Following vehicles that are in the
same lane*
●Vehicles traveling 2 lanes away from
your vehicle*
●Vehicles which are being overtaken
rapidly by your vehicle*
*: Depending on the conditions, detec-
tion of a vehicle and/or object may
occur.
■Conditions under which the system
may not function correctly
●The Blind Spot Monitor may not detect
vehicles correctly in the following situ- ations:• When the sensor is misaligned due to
a strong impact to the sensor or its surrounding area• When mud, snow, ice, a sticker, etc.,
is covering the sensor or surrounding area on the rear bumper• When driving on a road surface that is
wet with standing water during bad weather, such as heavy rain, snow, or fog
• When multiple vehicles are approach- ing with only a small gap between each vehicle
• When the distance between your vehi- cle and a following vehicle is short• When there is a significant difference
in speed between your vehicle and the vehicle that enters the detection area
• When the difference in speed between your vehicle and another vehicle is changing
• When a vehicle enters a detection area traveling at about the same speed as your vehicle
• As your vehicle starts from a stop, a vehicle remains in the detection area• When driving up and down consecu-
tive steep inclines, such as hills, dips in the road, etc.

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4-5. Using the driving support systems
Driving
• When driving on roads with sharp
bends, consecutive curves, or uneven surfaces• When vehicle lanes are wide, or when
driving on the edge of a lane, and the vehicle in an adjacent lane is far away from your vehicle
• When towing a trailer • When an accessory (such as a bicycle carrier) is installed to the rear of the
vehicle • When there is a significant difference in height between your vehicle and
the vehicle that enters the detection area• Immediately after the Blind Spot Moni-
tor is turned on
●Instances of the Blind Spot Monitor
unnecessarily detecting a vehicle and/or object may increase in the fol-lowing situations:
• When the sensor is misaligned due to a strong impact to the sensor or its surrounding area
• When the distance between your vehi- cle and a guardrail, wall, etc., that enters the detection area is short
• When driving up and down consecu- tive steep inclines, such as hills, dips in the road, etc.
• When vehicle lanes are narrow, or when driving on the edge of a lane, and a vehicle traveling in a lane other
than the adjacent lanes enters the detection area• When driving on roads with sharp
bends, consecutive curves, or uneven surfaces• When the tires are slipping or spinning
• When the distance between your vehi- cle and a following vehicle is short• When an accessory (such as a bicycle
carrier) is installed to the rear of the vehicle
*: If equipped
■Location and types of sensors
Front corner sensors
Front center sensors
Rear corner sensors
Rear center sensors
■Display
When the sensors detect an object,
such as a wall, a graphic is shown
on the multi-information display
depending on the position and dis-
Toyota parking assist-
sensor*
The distance from your vehicle
to objects, such as a wall,
when parallel parking or
maneuvering into a garage is
measured by the sensors and
communicated via the multi-
information display and a
buzzer. Always check the sur-
rounding area when using this
system.
System components

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6-3. Do-it-yourself maintenance
1Pull the hood lock release lever.
The hood will pop up slightly.
2Push the auxiliary catch lever to
the left and lift the hood.
3 Hold the hood open by inserting
the support rod into the slot.Hood
Opening the hood
WARNING
■Pre-driving check
Check that the hood is fully closed
and locked. If the hood is not locked properly, it may open while the vehicle is in
motion and cause an accident, which may result in death or serious injury.
■To prevent a injuries
The support rod may be hot after driv- ing the vehicle. Touching the hot sup-
port rod may lead to burns or other serious injuries.
■After installing the support rod into the slot
Make sure the rod supports the hood
securely preventing it from falling down onto your head or body.

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6-3. Do-it-yourself maintenance
repairer, local electrical appliance
shops or camera stores.
●Replace only with the same or equiva-
lent type recommended by the manu- facturer.
●Dispose of used batteries according to local laws.
Vehicles without a smart entry &
start system
1 Remove the key cover.
To prevent damage to the key, cover the tip of the flathead screwdriver with a
rag.
2 Remove the battery cover.
Use a screwdriver of an appropriate size. Forcedly prying may cause the
cover damaged.
If the battery cover is difficult to remove, lift the edge to remove it.
3 Remove the depleted battery
using a small flathead screw-
driver.
When removing the battery, use a screwdriver of an appropriate size.
Insert a new battery with the “+” termi-
nal facing up.
4 Install the battery cover with the
tab facing up.
Push the entire edge of the battery
cover into the key.
5 Install the key cover.
Align the key cover with the key and then press it straight into the key.
Make sure that the key cover is securely installed without any gaps
Replacing the battery

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6-3. Do-it-yourself maintenance
Normal fuse
Blown fuse
Type B
Normal fuse
Blown fuse
Type C
Normal fuse
Blown fuse
Type D
Normal fuse
Blown fuse
■After a fuse is replaced
●When installing the lid, make sure that the tab is installed securely.
●If the lights do not turn on even after the fuse has been replaced, a bulb
may need replacement. ( P.357)
●If the replaced fuse blows again, have
the vehicle inspected by any autho- rized Toyota retailer or Toyota autho-rized repairer, or any reliable repairer.
■If there is an overload in a circuit
The fuses are designed to blow, protect- ing the wiring harness from damage.
■When replacing light bulbs
Toyota recommends that you use genu-
ine Toyota products designed for this vehicle.
Because certain bulbs are connected to circuits designed to prevent overload, non-genuine parts of parts not designed
for this vehicle may be unusable.
WARNING
■To prevent system breakdowns and vehicle fire
Observe the following precautions. Failure to do so may cause damage to the vehicle, and possibly a fire or
injury.
●Never use a fuse of a higher
amperage rating than that indi- cated, or use any other object in place of a fuse.
●Always use a genuine Toyota fuse or equivalent.
Never replace a fuse with a wire, even as a temporary fix.
●Do not modify the fuses or fuse boxes.

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6-3. Do-it-yourself maintenance
Maintenance and care
2Turn the bulb base counter-
clockwise.
3 Replace the light bulb.
4 Install the bulb base.
Align the 3 tabs on the light bulb with the mounting and insert.
5 Plug the connector.
6 Secure the bulb base.
Shake the bulb base gently to check
that it is not loose, turn the headlights on once and visually confirm that no
light is leaking through the mounting.
■Front position lights (bulb
type)
1 Turn the bulb base counter-
clockwise.
2 Remove light bulb.
3 When installing, reverse the
steps listed.