key TOYOTA YARIS 2018 Repair Manual

505
8When trouble arises
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8-1. Essential information
Emergency flashers ........... 506
If your vehicle has to
be stopped in
an emergency .................. 507
8-2. Steps to take in
an emergency
If your vehicle needs to
be towed .......................... 509
If you think something is
wrong ............................... 516
If a warning light turns on
or a warning buzzer
sounds ............................. 517
If a warning message is
displayed (vehicles with
color display) ................... 531
If you have a flat tire
(vehicles with
an emergency tire
puncture repair kit)........... 537
If you have a flat tire
(vehicles with
a spare tire) ..................... 556
If the hybrid system will
not start............................ 571
If the electronic key does
not operate properly
(vehicles with a smart
entry & start system)........ 573
If the vehicle 12-volt
battery is discharged ....... 576
If your vehicle overheats .... 581
If the vehicle becomes
stuck ................................ 587

5088-1. Essential information
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Vehicles with a smart entry &
start system: To stop the hybrid
system, press and hold the
power 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 hybrid system has to be turned off while driving
● Power assist for the steering wheel will be lost, making the steering wheel
heavier to turn. Decelerate as much as possible before turning off the
hybrid system.
● Vehicles without a smart entry & start system: Never attempt to remove
the key, as doing so will lock the steering wheel.
5

5158-2. Steps to take in an emergency
8
When trouble arises
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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 power switch 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 power 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.

5298-2. Steps to take in an emergency
8
When trouble arises
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After taking the specified steps to correct the suspected problem,
check that the warning light goes off.
Follow the correction procedures (vehicles with a smart entry &
start system and with monochrome display).
Interior
buzzer
Exterior
buzzer
Warning
lightWarning light/Details/Actions
ContinuousContinuous(Flashes in yellow)
Smart entry & start system indicator
The electronic key was carried outside the
vehicle and the driver’s door was opened
and closed while any shift position other
than P was selected without turning off the
power switch.
 Change the shift position to P.
 Bring the electronic key back into the
vehicle.
Once3 times(Flashes in yellow)
Smart entry & start system indicator
The electronic key was carried outside the
vehicle and the driver’s door was opened
and closed while the shift position P was
selected without turning off the power
switch.
 Turn the power switch off or bring the
electronic key back into the vehicle.
Once3 times(Flashes in yellow)
Smart entry & start system indicator
Indicates that a door other than the driver’s
door has been opened and closed with the
power switch in any mode other than off
and the electronic key outside of the detec-
tion area.
 Confirm the location of the electronic
key.
Once
Continuous
(5
seconds)(Flashes in yellow)
Smart entry & start system indicator
An attempt was made to exit the vehicle
with the electronic key and lock the doors
without first turning the power switch off.
 Turn the power switch off and lock the
doors again.

5308-2. 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 pres-
ent when attempting to start the hybrid sys-
tem.
 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. 477)
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. 226)
Once(Flashes in yellow for 30 seconds.)
Smart entry & start system indicator
• When the doors were unlocked with the
mechanical key and then the power
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 power switch
was pressed two consecutive times.
 Touch the electronic key to the power
switch while depressing the brake
pedal.
Interior
buzzer
Exterior
buzzer
Warning
lightWarning light/Details/Actions

5718-2. Steps to take in an emergency
8
When trouble arises
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If the hybrid system will not start
One of the following may be the cause of the problem:
● Vehicles with a smart entry & start system: The electronic key may
not be functioning properly. ( P. 573)
● There may not be sufficient fuel in the vehicle’s tank.
Refuel the vehicle. ( P. 252)
● There may be a malfunction in the immobilizer system. (P. 9 6 )
● There may be a malfunction in the steering lock system.
● The hybrid system may be malfunctioning due to an electrical prob-
lem such as electronic key battery depletion or a blown fuse. How-
ever, depending on the type of malfunction, an interim measure is
available to start the hybrid system. ( P. 572)
One of the following may be the cause of the problem:
● The 12-volt battery may be discharged. (P. 576)
● The 12-volt battery terminal connections may be loose or corroded.
( P. 445)
Reasons for the hybrid system not starting vary depending on
the situation. Check the following and perform the appropriate
procedure:
The hybrid system will not start even though the correct starting
procedure is being followed. ( P. 216, 220)
The interior lights and headlights are dim, or the horn does not
sound or sounds at a low volume.

5738-2. Steps to take in an emergency
8
When trouble arises
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If the electronic key does not operate properly
(vehicles with a smart entry & start system)
Use the mechanical key ( P. 142)
in order to perform the following
operations:
Unlocks all the doors
Locks all the doors
If communication between the electronic key and vehicle is
interrupted ( P. 168) or the electronic key cannot be used
because the battery is depleted, the smart entry & start system
and wireless remote control cannot be used. In such cases, the
doors can be opened and the hybrid system can be started by
following the procedure below.
Locking and unlocking the doors
1
2

5748-2. Steps to take in an emergency
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Ensure that the shift lever is in P and depress the brake pedal.
Touch the Toyota emblem side
of the electronic key to the
power switch.
Vehicles with monochrome display:
When the electronic key is
detected, a buzzer sounds, and
then the power switch will turn to
ON mode.
Vehicles with color display: When
the electronic key is detected, a
message is shown on the multi-
information display, a buzzer
sounds, and then the power switch
will turn to ON mode.
If any of the doors is opened or closed while the key is being touched to
the switch, an alarm will sound to indicate that the start function cannot
detect the electronic key.
When the smart entry & start system is deactivated in customization set-
ting, the power switch will turn to ACCESSORY mode.
Vehicles with monochrome display: Firmly depress the brake pedal
and check that (green) turns on.
Vehicles with color display: Firmly depress the brake pedal and
check that and messages are shown on the multi-informa-
tion display.
Press the power switch.
In the event that the hybrid system still cannot be operated, contact
any authorized Toyota retailer or Toyota authorized repairer, or any
reliable repairer.
Starting the hybrid system
1
2
3
4

5758-2. Steps to take in an emergency
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When trouble arises
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■Stopping the hybrid system
Shift the shift lever to P and press the power switch as you normally do when
stopping the hybrid system.
■ Replacing the key battery
As the above procedure is a temporary measure, it is recommended that the
electronic key battery be replaced immediately when the battery is depleted.
( P. 477)
■ Changing power switch modes
Release the brake pedal and press the power switch in step above.
The hybrid system does not start and modes will be changed each time the
switch is pressed. ( P. 222)
■ When the electronic key does not work properly
● Make sure that the smart entry & start system has not been deactivated in
the customization setting. If it is off, turn the function on.
(Customizable features: P. 606)
● Check if battery-saving mode is set. If it is set, cancel the function.
( P. 167)
3

5798-2. Steps to take in an emergency
8
When trouble arises
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■ Precautions when the 12-volt battery is discharged (vehicles with a
smart entry & start system)
● In some cases, it may not be possible to unlock the doors using entry func-
tion of the smart entry & start system immediately after the 12-volt battery
has been disconnected and reconnected. Use the wireless remote control
or the mechanical key to lock or unlock the doors.
● The hybrid system may not start on the first attempt after the 12-volt battery
has recharged but will start normally after the second attempt. This is not a
malfunction.
● The power switch mode is memorized by the vehicle. When the 12-volt bat-
tery is reconnected, the system will return to the mode it was in before the
12-volt battery was discharged.
Before disconnecting the 12-volt battery, turn the power switch off. If the
power switch was in ACCESSORY or ON mode before the 12-volt battery
was discharged, the audio system and/or air conditioning system may oper-
ate when the 12-volt battery is reconnected.
WARNING
■ Avoiding 12-volt battery fires or explosions
Observe the following precautions to prevent accidentally igniting the flam-
mable gas that may be emitted from the 12-volt battery:
● Make sure each jumper cable is connected to the correct terminal and that
it is not unintentionally in contact with anything other than the intended ter-
minal.
● Do not allow the other end of the jumper cable connected to the “+” termi-
nal to come into contact with any other parts or metal surfaces in the area,
such as brackets or unpainted metal.
● Do not allow the + and - clamps of the jumper cables to come into contact
with each other.
● Do not smoke, use matches, cigarette lighters or allow open flame near
the 12-volt battery.
■ After recharging the 12-volt battery
Have the 12-volt battery inspected at any authorized Toyota retailer or
Toyota authorized repairer, or any reliable repairer as soon as possible. If
the 12-volt battery is deteriorating, continued use may cause the 12-volt
battery to emit a malodorous gas, whic h may be detrimental to the health of
passengers.