2019 TOYOTA AYGO engine overheat

2504-6. Using the driving support systems
AYGO_OM_Europe_OM99R19E
■ EPS operation sound
When the steering wheel is operated, a motor sound (whirring sound) may be
heard. This does not indicate a malfunction.
■ Automatic reactivation of TRC and VSC systems
After turning the TRC and VSC systems off, the systems will be automatically
re-enabled in the following situations:
● When the engine switch is turned to the “LOCK” position (vehicles without a
smart entry & start system) or off (vehicles with a smart entry & start sys-
tem).
● If only the TRC system is turned off, the TRC will turn on when vehicle
speed increases
If both the TRC and VSC systems are turned off, automatic re-enabling will
not occur when vehicle speed increases.
■ Reduced effectiveness of the EPS system
The effectiveness of the EPS system is reduced to prevent the system from
overheating when there is frequent steering input over an extended period of
time. The steering wheel may feel heavy as a result. Should this occur, refrain
from excessive steering input or stop the vehicle and turn the engine off. The
EPS system should return to normal within 10 minutes.
■ Operating conditions of emergency brake signal
When the following three conditions are met, the emergency brake signal will
operate:
● The emergency flashers are off
● Actual vehicle speed is over 55 km/h (35 mph)
● The brake pedal is depressed in a manner that cause the system to judge
from the vehicle deceleration that this is a sudden braking operation
■ Automatic system cancelation of emergency brake signal
The emergency brake signal will turn off in any of the following situations:
● The emergency flashers are turned on
● The brake pedal is released
● The system judges from the vehicle deceleration that is not a sudden brak-
ing operation

3336-1. Using the air conditioning system and defogger
6
Interior features
AYGO_OM_Europe_OM99R19E
WARNING
■Burns
● Use caution when seating the following persons in a seat with the seat
heater on to avoid the possibility of burns:
• Babies, small children, the elderly, the sick and the physically chal-
lenged
• Persons with sensitive skin
• Persons who are fatigued
• Persons who have taken alcohol or drugs that induce sleep (sleeping
drugs, cold remedies, etc.)
● Do not cover the seat with anything when using the seat heater.
Using the seat heater with a blanket or cushion increases the temperature
of the seat and may lead to overheating.
● Do not use the seat heater more than necessary. Doing so may cause
minor burns or overheating.
NOTICE
■ To prevent seat heater damage
Do not put unevenly weighted objects on the seat and do not stick sharp
objects (needles, nails, etc.) into the seat.
■ To prevent battery discharge
Turn the seat heaters off when the engine is not running.

405
8When trouble arises
AYGO_OM_Europe_OM99R19E
8-1. Essential information
Emergency flashers ........... 406
If your vehicle has to
be stopped in an
emergency ....................... 407
8-2. Steps to take in
an emergency
If your vehicle needs
to be towed ...................... 409
If you think
something is wrong.......... 415
Fuel pump shut off
system ............................ 416
If a warning light turns
on or a warning buzzer
sounds ............................. 417
If you have a flat tire
(vehicles without
a spare tire) ..................... 427
If you have a flat tire
(vehicles with
a spare tire) ..................... 442
If the engine
will not start...................... 455
If the shift lever cannot
be shifted (vehicles
with a multi-mode
manual transmission) ...... 457
If the electronic key does
not operate properly
(vehicles with a smart
entry & start system)........ 458
If the vehicle battery
is discharged ................... 461
If your vehicle overheats .... 465
If the vehicle becomes
stuck ................................ 468

4178-2. Steps to take in an emergency
8
When trouble arises
AYGO_OM_Europe_OM99R19E
If a warning light turns on or a warning
buzzer sounds
Calmly perform the following actions if any of the warning lights
comes on or flashes. If a light comes on or flashes, but then
goes off, this does not necessarily indicate a malfunction in the
system. However, if this continues to occur, have the vehicle
inspected by any authorized Toyota retailer or Toyota authorized
repairer, or any reliable repairer.
Warning light and warning buzzer list
Warning lightWarning light/Details/Actions
Brake system warning light (warning buzzer)*1
Indicates that:
• The brake fluid level is low; or
• The brake system is malfunctioning
 Immediately stop the vehicle in a safe place and con-
tact any authorized Toyota retailer or Toyota autho-
rized repairer, or any reliable repairer. Continuing to
drive the vehicle may be dangerous.
Charging system warning light
Indicates a malfunction in the vehicle’s charging system
 Immediately stop the vehicle in a safe place and con-
tact any authorized Toyota retailer or Toyota autho-
rized repairer, or any reliable repairer.
Low engine oil pressure warning light
Indicates that the engine oil pressure is too low.
 Immediately stop the vehicle in a safe place and con-
tact any authorized Toyota retailer or Toyota autho-
rized repairer, or any reliable repairer.
(Flashes or comes on)
High engine coolant temperature warning light
Indicates that the engine is overheating.
As the coolant temperature rise, it changes from flashing
to comes on.
 P. 465

4188-2. Steps to take in an emergency
AYGO_OM_Europe_OM99R19E
(Flashes)
“STOP” warning light
Indicates a malfunction in:
• Engine oil pressure is too low; or
• Engine is almost overheating.
 Immediately stop the vehicle in a safe place and con-
tact any authorized Toyota retailer or Toyota autho-
rized repairer, or any reliable repairer.
(Comes on)
Multi-mode manual transmissi on warning light (vehicles
with a multi-mode manual transmission)
Indicates a malfunction in the multi-mode manual trans-
mission system.
 Have the system checked by any authorized Toyota
retailer or Toyota authorized repairer, or any reliable
repairer.
Multi-mode manual transmission warning light (warning
buzzer) (vehicles with a multi-mode manual transmis-
sion)
Indicates a malfunction in the multi-mode manual trans-
mission system and that the clutch has become hot due to
excessive load.
 Pull over and shift the shift lever to N. Wait for about
15 minutes for the clutch to cool down. Have the sys-
tem checked by any authorized Toyota retailer or
Toyota authorized repairer, or any reliable repairer.
(Flashes)
Heat clutch warning light (warning buzzer) (vehicles
with a multi-mode manual transmission)
Indicates that the clutch has become hot, but does not
indicate a malfunction in the multi-mode manual transmis-
sion system.
 Pull over and shift the shift lever to N. Wait for about
15 minutes for the clutch to cool down.
Warning lightWarning light/Details/Actions

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.

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

494Alphabetical index
AYGO_OM_Europe_OM99R19E
Child-protectors ....................... 121
Cleaning............................ 346, 350Aluminum wheels .................. 347
Canvas top ............................ 346
Exterior.................................. 346
Interior ................................... 350
Seat belts .............................. 351
Clock ......................................... 342
Clutch........................................ 479
Condenser ................................ 366
Cooling system Engine overheating ............... 465
CRS (Child Restraint System) .................................... 50
Cup holders .............................. 336
Curtain shield airbags ............... 34
Customizable features ............ 485
Daytime running light system .................................... 201
Defogger Outside rear view mirrors ........................ 322, 328
Rear window ................. 322, 328
Windshield .................... 322, 328
Dimension ................................ 472
Display
Drive monitor display ............ 103
Trip information ..................... 103
Do-it-yourself maintenance .... 355
Doors Back door .............................. 123
Door glasses ......................... 163
Door lock ....................... 118, 123
Open door warning buzzer.... 131
Open door warning light ........ 421
Outside rear view mirrors ...... 161
Rear door
child-protectors ................... 121
Side doors ............................. 118
Drive monitor display .............. 103 Switching the display ............ 103
Trip information ..................... 103
Driving ...................................... 170 Break-in tips .......................... 173
Correct posture ....................... 28
Procedures ........................... 170
Winter drive tips .................... 253
Electric Power Steering (EPS)....................................... 247Function ................................ 247
Warning light ......................... 419
Electronic key .......................... 110 Battery-saving function ......... 132
If the electronic key does not
operate properly ................. 458
Replacing the battery ............ 383
Emergency, in case of If the electronic key does not operate properly ................. 458
If the engine will not start ...... 455
If the shift lever cannot be shifted................................. 457
If the vehicle has discharged battery ................................ 461
If the warning buzzer
sounds................................ 417
If the warning light turns on .............................. 417
If you have a flat tire ..... 427, 442
If you lose your keys ............. 112
If you think something is wrong.................................. 415
If your vehicle becomes stuck ................................... 468
If your vehicle needs to be towed.................................. 409
If your vehicle overheats ....... 465
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