Page 451 of 504

4518-2. Steps to take in an emergency
8
When trouble arises
AYGO_OM_Europe_OM99R19E
Firmly tighten each wheel bolts
two or three times in the order
shown in the illustration.
Tightening torque:
103 N·m (10.5 kgf·m, 76 ft·lbf)
Stow the flat tire, tire jack and all tools.
■ The compact spare tire
● The compact spare tire is identified by the label “TEMPORARY USE ONLY”
on the tire sidewall.
Use the compact spare tire temporarily, and only in an emergency.
● Make sure to check the tire inflation pressure of the compact spare tire.
( P. 480)
■ When using the compact spare tire (vehicles with the tire pressure warn-
ing system)
The tire pressure warning system does not function properly with the compact
spare tire.
■ If you have a flat front tire on a road covered with snow or ice
Install the compact spare tire on one of the rear wheels of the vehicle. Per-
form the following steps and fit tire chains to the front tires:
Replace a rear tire with the compact spare tire.
Replace the flat front tire with the tire removed from the rear of the vehicle.
Fit tire chains to the front tires.
■ After completing the tire change (vehicles with the tire pressure warning
system)
The tire pressure warning system must be reset. ( P. 373)
Page 453 of 504

4538-2. Steps to take in an emergency
8
When trouble arises
AYGO_OM_Europe_OM99R19E
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 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
•TRC
• PCS (Pre-Collision system) (if equipped)
• LDA (Lane Departure Alert) (if equipped)
• EPS
• Tire pressure warning system (if equipped)
■ 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.
■ 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.
■ Replacing a flat tire (vehicles with a steel wheel)
Never use tools, such as an Allen
wrench, that are used by applying them
to a hexagonal concave portion of a bolt
head. Doing so could cause bolt defor-
mation and improper installation, and
may result in serious injury.
Page 464 of 504

4648-2. Steps to take in an emergency
AYGO_OM_Europe_OM99R19E
WARNING
■Avoiding battery fires or explosions
Observe the following precautions to prevent accidentally igniting the flam-
mable gas that may be emitted from the battery:
● Make sure each jumper cable is connected to the correct terminal and that
it is not unintentionally in contact with any other than the intended terminal.
● 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 battery.
■ Battery precautions
The battery contains poisonous and corrosive acidic electrolyte, while
related parts contain lead and lead compounds. Observe the following pre-
cautions when handling the battery:
● When working with the battery, always wear safety glasses and take care
not to allow any battery fluids (acid) to come into contact with skin, clothing
or the vehicle body.
● Do not lean over the battery.
● In the event that battery fluid comes into contact with the skin or eyes,
immediately wash the affected area with water and seek medical attention.
Place a wet sponge or cloth over the affected area until medical attention
can be received.
● Always wash your hands after handling the battery support, terminals, and
other battery-related parts.
● Do not allow children near the battery.
■ To prevent damage to the vehicle
Do not pull- or push-start the vehicle as the three-way catalytic converter
may overheat and become a fire hazard.
NOTICE
■ When handling jumper cables
When connecting the jumper cables, ensure that they do not become entan-
gled in the cooling fan or engine drive belt.
Page 465 of 504
4658-2. Steps to take in an emergency
8
When trouble arises
AYGO_OM_Europe_OM99R19E
If your vehicle overheats
●The high engine coolant temperature warning light (P. 417) comes
on or flashes, or a loss of engine power is experienced. (For exam-
ple, the vehicle speed does not increase.)
● Steam comes out from under the hood.
Stop the vehicle in a safe place and turn off the air conditioning sys-
tem, and then stop the engine.
If you see steam:
Carefully lift the hood after the steam subsides.
If you do not see steam:
Carefully lift the hood.
After the engine has cooled
down sufficiently, inspect the
hoses and radiator core (radia-
tor) for any leaks.
Radiator
Cooling fan
If a large amount of coolant
leaks, immediately contact any
authorized Toyota retailer or
Toyota authorized repairer, or
any reliable repairer.
The following may indicate that your vehicle is overheating.
Correction procedures
1
2
Page 467 of 504

4678-2. Steps to take in an emergency
8
When trouble arises
AYGO_OM_Europe_OM99R19E
If the fan is not operating:
Stop the engine immediately and contact any authorized Toyota
retailer or Toyota authorized repairer, or any reliable repairer.
If the fan is operating:
Have the vehicle inspected at the nearest any authorized Toyota
retailer or Toyota authorized repairer, or any reliable repairer.
WARNING
■ When inspecting under the hood of your vehicle
Observe the following precautions.
Failure to do so may result in serious injury such as burns.
● If steam is seen coming from under the hood, do not open the hood until
the steam has subsided. The engine compartment may be very hot.
● Keep hands and clothing (especially a tie, a scarf or a muffler) away from
the fan and belts. Failure to do so may cause the hands or clothing to be
caught, resulting in serious injury.
● Do not loosen the radiator cap while the engine and radiator are hot. High
temperature steam or coolant could spray out.
NOTICE
■ When adding engine coolant
Add coolant slowly after the engine has cooled down sufficiently. Adding
cool coolant to a hot engine too quickly can cause damage to the engine.
■ To prevent damage to the cooling system
Observe the following precautions:
● Avoid contaminating the coolant with foreign matter (such as sand or dust,
etc.).
● Do not use any coolant additives.
Page 469 of 504
4698-2. Steps to take in an emergency
8
When trouble arises
AYGO_OM_Europe_OM99R19E
WARNING
■When attempting to free a stuck vehicle
If you choose to push the vehicle back and forth to free it, make sure the
surrounding area is clear to avoid striking other vehicles, objects or people.
The vehicle may also lunge forward or lunge back suddenly as it becomes
free. Use extreme caution.
■ When shifting the shift lever (vehicles with a multi-mode manual trans-
mission)
Be careful not to shift the shift lever with the accelerator pedal depressed.
This may lead to unexpected rapid acceleration of the vehicle that may
cause an accident resulting in death or serious injury.
NOTICE
■ To avoid damaging the transmission and other components
● Avoid spinning the wheels and depressing the accelerator pedal more
than necessary.
● If the vehicle remains stuck even after these procedures are performed,
the vehicle may require towing to be freed.
Page 486 of 504
4869-3. Items to initialize
AYGO_OM_Europe_OM99R19E
Items to initialize
*: If equipped
The following item must be initialized for normal system opera-
tion after such cases as the battery being reconnected, or main-
tenance being performed on the vehicle:
ItemWhen to initializeReference
Tire pressure warning
system*When changing the tire sizeP. 374
Page 490 of 504

490What to do if... (Troubleshooting)
AYGO_OM_Europe_OM99R19E
●Vehicles without a smart entry & start system
It is locked to prevent theft of the vehicle if the key is removed from the
engine switch. ( P. 1 8 3 )
●Vehicles with a smart entry & start system
It is locked automatically to prevent theft of the vehicle. ( P. 188)
●The auto power off function will be operated if the vehicle is left in ACCES-
SORY or IGNITION ON mode (the engine is not operating) for a period of
time. ( P. 187)
●The seat belt reminder light is flashing
Are the driver and the passengers wearing the seat belts? ( P. 421)
●The brake system warning light is on
Is the parking brake released? ( P. 198)
Depending on the situation, other types of warning buzzer may also
sound. ( P. 417)
●When a warning light turns on, refer to P. 417.
The steering wheel cannot be turned after the engine is
stopped
The engine switch is turned off automatically
(vehicles with a smart entry & start system)
A warning buzzer sounds during driving
A warning light turns on