warning light TOYOTA AYGO 2021 Repair Manual

4578-2. Steps to take in an emergency
8
When trouble arises
AYGO_OM_Europe_OM9A012E
Warning light and warning buzzer list (vehicles with a smart
entry & start system)
Interior
buzzer
Exterior
buzzer
Warning
lightWarning light/Details/Actions
Once3 times(Flashes in yellow)
Smart entry & start system indicator light
(vehicles with a multi-mode manual trans-
mission)
The electronic key was carried outside the
vehicle and the driver’s door was opened
and closed while the engine switch was in a
made other than off.
 Turn the engine switch off or bring the
electronic key back into the vehicle.
Once3 times(Flashes in yellow)
Smart entry & start system indicator light
Indicates that a door other than the driver’s
door has been opened and closed with the
engine 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(Flashes in yellow for 15 seconds.)
Smart entry & start system indicator light
Indicates that the electronic key is not pres-
ent when attempting to start the engine.
 Confirm the location of the electronic
key.
9 times(Flashes in yellow)
Smart entry & start system indicator light
An attempt was made to drive when the
regular key was not inside the vehicle.
 Confirm that the electronic key is inside
the vehicle.

4588-2. Steps to take in an emergency
AYGO_OM_Europe_OM9A012E
Once(Flashes in yellow for 15 seconds.)
Smart entry & start system indicator light
Indicates that the electronic key battery is
low.
 Replace the battery. (P. 416)
Once(Flashes quickly in green for 15 seconds.)
Smart entry & start system indicator light
Indicates that the steering lock has not
been released.
 Release the steering lock. (P. 220)
Once(Flashes in yellow for 60 seconds.)
Smart entry & start system indicator light
• 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.
 Touch the electronic key to the engine
switch while depressing the brake
pedal.
Interior
buzzer
Exterior
buzzer
Warning
lightWarning light/Details/Actions

5038-2. Steps to take in an emergency
8
When trouble arises
AYGO_OM_Europe_OM9A012E
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.

5048-2. Steps to take in an emergency
AYGO_OM_Europe_OM9A012E
If your vehicle overheats
●The high engine coolant temperature warning light (P. 450) 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

528What to do if... (Troubleshooting)
AYGO_OM_Europe_OM9A012E
●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. 2 1 5 )
●Vehicles with a smart entry & start system
It is locked automatically to prevent theft of the vehicle. ( P. 220)
●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. 219)
●The seat belt reminder light is flashing
Are the driver and the passengers wearing the seat belts? ( P. 453)
●The brake system warning light is on
Is the parking brake released? ( P. 230)
Depending on the situation, other types of warning buzzer may also
sound. ( P. 449)
●When a warning light turns on, refer to P. 449.
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

530Alphabetical index
AYGO_OM_Europe_OM9A012E
Alphabetical index
A/C..................................... 352, 358
Air conditioning filter.............. 414
Automatic air conditioning
system ................................ 358
Manual air conditioning
system ................................ 352
ABS (Anti-lock Brake
System) .................................. 279
Function ................................ 279
Warning light ......................... 451
Air conditioning filter .............. 414
Air conditioning
system ............................ 352, 358
Air conditioning filter.............. 414
Automatic air conditioning
system ................................ 358
Manual air conditioning
system ............................... 352
Airbag manual on-off
system ...................................... 49
Airbags ....................................... 36
Airbag manual on-off
system .................................. 49
Airbag operating conditions .... 43
Airbag precautions for
your child .............................. 39
Airbag warning light .............. 451
Correct driving posture............ 30
Curtain shield airbag
operating conditions ............. 44
Curtain shield airbag
precautions ........................... 39
General airbag precautions..... 39
Locations of airbags................ 36
Modification and disposal
of airbags.............................. 42Side airbag operating
conditions ............................. 43
Side airbag precautions .......... 39
Side and curtain shield
airbags operating
conditions ............................. 43
Side and curtain shield
airbags precautions .............. 39
SRS airbags............................ 36
Antennas (smart entry &
start system) .......................... 143
Anti-lock brake system
(ABS) ...................................... 279
Function ................................ 279
Warning light ......................... 451
Audio system
*......................... 290
Audio input .................... 293, 320
AUX port ....................... 293, 320
Bluetooth
® audio................... 336
iPod....................................... 305
Optimal use........................... 294
Portable music player ........... 293
Radio .................................... 296
Steering wheel audio
switch ................................. 292
USB memory ........................ 313
Automatic air conditioning
system .................................... 358
Air conditioning filter ............. 414
Automatic air conditioning
system ............................... 358
Automatic light control
system .................................... 233
AUX port
*......................... 293, 320
A

531Alphabetical index
AYGO_OM_Europe_OM9A012E
Back door ................................. 137
Back-up lights
Replacing light bulbs ............. 432
Wattage................................. 520
Battery ...................................... 399
Battery checking ................... 399
If the vehicle battery is
discharged .......................... 500
Preparing and checking
before winter....................... 285
Replacing .............................. 502
Warning light ......................... 449
Bluetooth
®*
Audio system ........................ 336
Hands-free system
(for cellular phone).............. 338
Bottle holders........................... 369
Brake
Emergency brake signal ....... 279
Fluid ...................................... 518
Parking brake ........................ 230
Warning light ......................... 449
Brake assist.............................. 279
Break-in tips ............................ 205
Brightness control
Instrument cluster light
control................................. 108Canvas top ............................... 197
Care................................... 378, 382
Aluminum wheels.................. 379
Canvas top............................ 378
Exterior ................................. 378
Interior................................... 382
Seat belts .............................. 383
Chains....................................... 285
Child restraint system ............... 52
Fixed with a seat belt .............. 59
Fixed with an ISOFIX
lower anchorage ................... 70
Points to remember ................ 53
Riding with children................. 51
Types of child restraint system
installation method ............... 67
Using a top tether
anchorage ............................ 72
Child safety ................................ 51
Airbag precautions .................. 39
Back door precautions .......... 140
Battery precautions ....... 399, 503
Canvas top precautions ........ 198
Child restraint system ............. 52
How your child should wear
the seat belt.......................... 33
Installing child restraints ......... 67
Power window precautions ... 194
Rear door child-protectors .... 135
Removed key battery
precautions......................... 417
Seat belt precautions .............. 34
Seat heater precautions........ 365
BC
*: For vehicles with a multimedia system, refer to “Multimedia owner’s manual”.

532Alphabetical index
AYGO_OM_Europe_OM9A012E
Child-protectors ....................... 135
Cleaning............................ 378, 382
Aluminum wheels .................. 379
Canvas top ............................ 378
Exterior.................................. 378
Interior ................................... 382
Seat belts .............................. 383
Clock ......................................... 374
Clutch........................................ 517
Condenser ................................ 398
Cooling system
Engine overheating ............... 504
CRS (Child Restraint
System) .................................... 52
Cup holders .............................. 368
Curtain shield airbags ............... 36
Customizable features ............ 523Daytime running light
system .................................... 233
Defogger
Outside rear view
mirrors ........................ 354, 360
Rear window ................. 354, 360
Windshield .................... 354, 360
Dimension ................................ 510
Display
Drive monitor display ............ 105
Trip information ..................... 105
Do-it-yourself maintenance .... 387
Doors
Back door.............................. 137
Door glasses ......................... 194
Door lock....................... 132, 137
Open door warning buzzer ... 145
Open door warning light........ 453
Outside rear view mirrors...... 192
Rear door
child-protectors................... 135
Side doors............................. 132
Drive monitor display .............. 105
Switching the display ............ 105
Trip information ..................... 105
Driving ...................................... 202
Break-in tips .......................... 205
Correct posture ....................... 30
Procedures ........................... 202
Winter drive tips .................... 285D

533Alphabetical index
AYGO_OM_Europe_OM9A012E
Electric Power Steering
(EPS) ....................................... 279
Function ................................ 279
Warning light ......................... 451
Electronic key .......................... 112
Battery-saving function ......... 146
If the electronic key does not
operate properly ................. 497
Replacing the battery ............ 415
Emergency, in case of
If the electronic key does not
operate properly ................. 497
If the engine will not start ...... 494
If the shift lever cannot be
shifted ................................. 496
If the vehicle has discharged
battery................................. 500
If the vehicle is trapped in
rising water ......................... 441
If the warning buzzer
sounds ................................ 449
If the warning light
turns on............................... 449
If you have a flat tire...... 459, 481
If you lose your keys ............. 114
If you think something is
wrong .................................. 447
If your vehicle becomes
stuck ................................... 507
If your vehicle needs to be
towed .................................. 442
If your vehicle overheats ....... 504
Emergency brake signal ......... 279
Emergency flashers................. 438
Emergency tire puncture
repair kit ................................. 459Engine
“ACC” position ...................... 214
Accessory mode ................... 219
Compartment ........................ 393
Engine switch................ 214, 217
Hood ..................................... 390
How to start
the engine................... 214, 217
If the engine will not start ...... 494
Ignition switch
(engine switch) ........... 214, 217
Overheating .......................... 504
Engine coolant ......................... 397
Capacity ................................ 515
Checking ............................... 397
Preparing and checking
before winter....................... 285
Engine coolant
temperature
warning light .......................... 450
Engine immobilizer system ...... 75
Engine oil ................................. 394
Capacity ................................ 512
Checking ............................... 394
Preparing and checking
before winter....................... 285
Engine switch
(ignition switch)............. 214, 217
EPS (Electronic Power
Steering)................................. 279
Function ................................ 279
Warning light ......................... 451
E

534Alphabetical index
AYGO_OM_Europe_OM9A012E
Flat tire
Vehicles with a spare tire ...... 481
Vehicles without
a spare tire.......................... 459
Floor mats .................................. 28
Fluid
Brake..................................... 518
Washer.................................. 402
Fog lights.................................. 235
Replacing light bulbs ..... 429, 432
Switch ................................... 235
Wattage................................. 520
Follow me home system ......... 233
Front position lights ................ 231
Light switch ........................... 231
Replacing light bulbs ............. 435
Front seats ............................... 183
Adjustment ............................ 183
Cleaning ................................ 382
Correct driving posture............ 30
Seat heaters.......................... 364
Front turn signal lights............ 229
Replacing light bulbs ............. 429
Turn signal lever ................... 229
Wattage................................. 520
Fuel ........................................... 512
Capacity ................................ 512
Fuel gauge ............................ 103
Fuel pump shut off system .... 448
Information ............................ 521
Refueling ............................... 241
Type .............................. 241, 512
Warning light ......................... 454
Fuel filler door .......................... 243
Refueling ............................... 241
Fuel pump shut off system ..... 448
Fuses ........................................ 418Gauges ..................................... 103
Gear Shift Indicator ......... 224, 227
Glove box ................................. 368
Grocery bag hooks .................. 371
Hands-free system
(for cellular phone)
*............. 338
Head restraints ........................ 187
Headlights ................................ 231
Follow me home system ....... 233
Light switch ........................... 231
Replacing light bulbs............. 428
Wattage ................................ 520
Heaters
Automatic air conditioning
system ................................ 358
Manual air conditioning
system ................................ 352
Seat heaters ......................... 364
Outside rear view
mirrors ........................ 354, 360
High mounted stoplight
Replacing .............................. 434
Wattage ................................ 520
Hood ......................................... 390
Hooks
Grocery bag hooks ............... 371
Retaining hooks (floor mat)..... 28
Horn .......................................... 189
FG
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