ECU TOYOTA YARIS 2017 Repair Manual

4227-3. Do-it-yourself maintenance
YARIS_F_OM_Europe_OM52J20E
Remove the light bulb.
Stop/tail light
Rear turn signal light
Install the new bulb.
Stop/tail light
Rear turn signal light
Turn and secure the bulb
base.
Stop/tail light
Rear turn signal light
Install the cover.
Align the cover claws with
the notches.
Press the cover until it is
fixed.
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4247-3. Do-it-yourself maintenance
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Make sure that the cover is
secured by pressing on the
entire cover.
■Back-up light/rear fog light
Remove the clip and partly
remove the cover.
Pull the center section of the clip
and the remove and pull out the
lock.
Turn the bulb base counter-
clockwise.
Remove the light bulb.
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4267-3. Do-it-yourself maintenance
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WARNING
■Replacing light bulbs
● Turn off the lights. Do not attempt to replace the bulb immediately after
turning off the lights.
The bulbs become very hot and may cause burns.
● Do not touch the glass portion of the light bulb with bare hands. When it is
unavoidable to hold the glass portion, use and hold with a clean dry cloth
to avoid getting moisture and oils on the bulb.
Also, if the bulb is scratched or dropped, it may blow out or crack.
● Fully install light bulbs and any parts used to secure them. Failure to do so
may result in heat damage, fire, or water entering the headlight unit. This
may damage the headlights or cause condensation to build up on the lens.
■ To prevent damage or fire
● Make sure bulbs are fully seated and locked.
● Check the wattage of the bulb before installing to prevent heat damage.

4308-1. Essential information
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Vehicles with a smart entry &
start system: To stop the
engine, press and hold the
engine switch for 3 consecutive
seconds or more, or press it
briefly 3 times or more in suc-
cession.
Stop the vehicle in a safe place by the road.
Press and hold for 3 seconds or
more, or press briefly 3 times or more
4
WARNING
■ If the engine has to be turned off while driving
● Power assist for the brakes and steering wheel will be lost, making the
brake pedal harder to depress and the steering wheel heavier to turn.
Decelerate as much as possible before turning off the engine.
● Vehicles without a smart entry & start system: Never attempt to remove
the key, as doing so will lock the steering wheel.
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4338-2. Steps to take in an emergency
8
When trouble arises
YARIS_F_OM_Europe_OM52J20E
If a tow truck is not available in an emergency, your vehicle may be
temporarily towed using cables or chains secured to the emergency
towing eyelets. This should only be attempted on hard surfaced roads
for at most 80 km (50 miles) at under 30 km/h (18 mph).
A driver must be in the vehicle to steer and operate the brakes. The
vehicle’s wheels, drive train, axles, steering and brakes must be in
good condition.
For vehicles with a Multidrive, only the front towing eyelets may be
used.
Take out the towing eyelet. ( P. 454)
Remove the eyelet cover by
turning.
Insert the towing eyelet into the
hole and tighten partially by
hand.
Emergency towing
Emergency towing procedure
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4348-2. Steps to take in an emergency
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Tighten down the towing eyelet
securely using a wheel nut
wrench* or hard metal bar.
*: If a wheel nut wrench is not
equipped, a wheel nut wrench can
be purchased at any authorized
Toyota dealer or repairer, or
another duly qualified and
equipped professional.
Securely attach cables or chains to the towing eyelet.
Take care not to damage the vehicle body.
Vehicles without a smart entry & start system: Enter the vehicle
being towed and start the engine.
If the engine does not start, turn the engine switch to the “ON” position.
Vehicles with a smart entry & start system: Enter the vehicle being
towed and start the engine.
If the engine does not start, turn the engine switch to IGNITION ON mode.
Shift the shift lever to N and release the parking brake.
When the shift lever cannot be shifted: P. 195
■While towing
If the engine is not running, the power assist for the brakes and steering will
not function, making steering and braking more difficult.
■ Wheel nut wrench
● Vehicles with a wheel nut wrench: Wheel nut wrench is installed in the lug-
gage. ( P. 454, 470)
● Vehicles without a wheel nut wrench: Wheel nut wrench can be purchased
at any authorized Toyota dealer or repairer, or another duly qualified and
equipped professional.
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4358-2. Steps to take in an emergency
8
When trouble arises
YARIS_F_OM_Europe_OM52J20E
WARNING
Observe the following precautions.
Failure to do so may result in death or serious injury.
■ When towing the vehicle
■ While towing
● When towing using cables or chains, avoid sudden starts, etc. which place
excessive stress on the towing eyelets, cables or chains. The towing eye-
lets, cables or chains may become damaged, broken debris may hit peo-
ple, and cause serious damage.
● Vehicles without a smart entry & start system: Do not turn the engine
switch to the “LOCK” position.
There is a possibility that the steering wheel is locked and cannot be oper-
ated.
● Vehicles with a smart entry & start system: Do not turn the engine switch
off.
There is a possibility that the steering wheel is locked and cannot be oper-
ated.
■ Installing towing eyelets to the vehicle
Make sure that towing eyelets are installed securely.
If not securely installed, towing eyelets may come loose during towing.
Be sure to transport the vehicle with the
front wheels raised or with all four wheels
raised off the ground. If the vehicle is
towed with the front wheels contacting
the ground, the drivetrain and related
parts may be damaged.

4368-2. Steps to take in an emergency
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NOTICE
■To prevent damage to the vehicle when towing using a wheel-lift type
truck
● Vehicles without a smart entry & start system: Do not tow the vehicle from
the rear when the engine switch is in the “LOCK” position or the key is
removed.
The steering lock mechanism is not strong enough to hold the front wheels
straight.
● Vehicles with a smart entry & start system: Do not tow the vehicle from the
rear when the engine switch is off. The steering lock mechanism is not
strong enough to hold the front wheels straight.
● When raising the vehicle, ensure adequate ground clearance for towing at
the opposite end of the raised vehicle. Without adequate clearance, the
vehicle could be damaged while being towed.
■ To prevent damage to the vehicle when towing with a sling-type truck
Do not tow with a sling-type truck, either from the front or rear.
■ To prevent damage to the vehicle during emergency towing
Do not secure cables or chains to the suspension components.

4528-2. Steps to take in an emergency
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Once(Flashes in yellow for 15 seconds.)
Smart entry & start system indicator
Indicates that the electronic key is not
present when attempting to start the
engine.
 Confirm the location of the electronic
key.
9 times(Flashes in yellow)
Smart entry & start system indicator
An attempt was made to drive when the
regular key was not inside the vehicle.
 Confirm that the electronic key is inside
the vehicle.
Once(Flashes in yellow for 15 seconds.)
Smart entry & start system indicator
Indicates that the electronic key battery is
low.
 Replace the battery. (P. 402)
Once(Flashes quickly in green for 15 seconds.)
Smart entry & start system indicator
Indicates that the steering lock has not
been released.
 Release the steering lock. (P. 188)
Once(Flashes in yellow for 30 seconds.)
Smart entry & start system indicator
• When the doors were unlocked with the
mechanical key and then the engine
switch was pressed, the electronic key
could not be detected in the vehicle.
• The electronic key could not be detected
in the vehicle even after the engine
switch was pressed two consecutive
times.
 Vehicles with a Multidrive:
Touch the electronic key to the engine
switch while depressing the brake
pedal.
 Vehicles with a manual transmission:
Touch the electronic key to the engine
switch while depressing the clutch
pedal.
Interior
buzzer
Exterior
buzzer
Warning
lightWarning light/Details/Actions

4668-2. Steps to take in an emergency
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WARNING
■When using the compact spare tire
● Remember that the compact spare tire provided is specifically designed
for use with your vehicle. Do not use your compact spare tire on another
vehicle.
● Do not use more than one compact spare tire simultaneously.
● Replace the compact spare tire with a standard tire as soon as possible.
● Avoid sudden acceleration, abrupt steering, sudden braking and shifting
operations that cause sudden engine braking.
■ When storing the compact spare tire
Be careful not to catch fingers or other body parts between the compact
spare tire and the body of the vehicle.
■ After using the tools and jack
Before driving, make sure all the tools and jack are securely in place in their
storage location to reduce the possibility of personal injury during a collision
or sudden braking.
■ When the compact spare tire is attached
The vehicle speed may not be correctly detected, and the following systems
may not operate correctly:
● ABS
● Brake assist
● VSC (if equipped)
● TRC (if equipped)
● PCS (Pre-Crash Safety system) (if equipped)
● LDA (Lane Departure Alert) (if equipped)
● Automatic High Beam (if equipped)
● Cruise control (if equipped)
● Navigation system (if equipped)
● EPS (Electric Power Steering)
■ Speed limit when using the compact spare tire
Do not drive at speeds in excess of 80 km/h (50 mph) when a compact
spare tire is installed on the vehicle.
The compact spare tire is not designed for driving at high speeds. Failure to
observe this precaution may lead to an accident causing death or serious
injury.