check engine TOYOTA AYGO 2021 Service Manual

5058-2. Steps to take in an emergency
8
When trouble arises
AYGO_OM_Europe_OM9A012E
The coolant level is satisfactory if it is between the “FULL” or “F”
and “LOW” lines on the reservoir.
Radiator cap
Reservoir
“FULL” or “F”
“LOW”
Add coolant if necessary.
Water can be used in an emer-
gency if coolant is unavailable.
Start the engine and turn the air conditioning system on to check
that the radiator cooling fan operate and to check for coolant leaks
from the radiator or hoses.
The fan operate when the air conditioning system is turned on immediately
after a cold start. Confirm that the fan is operating by checking the fan
sound and air flow. If it is difficult to check these, turn the air conditioning
system on and off repeatedly. (The fan may not operate in freezing tem-
peratures.)
Ty pe ATy pe B
1
2
3
4

5129-1. Specifications
AYGO_OM_Europe_OM9A012E
*: The engine oil capacity is a reference quantity to be used when changing
the engine oil. Warm up and turn off the engine, wait more than 5 minutes,
and check the oil level on the dipstick.
Engine
Model1KR-FE
Ty p e3-cylinder in line, 4-cycle, gasoline
Bore and stroke71.0  84.0 mm (2.79  3.30 in.)
Displacement998 cm3 (60.9 cu.in.)
Valve clearance
(engine cold)Intake: 0.145  0.235 mm (0.006  0.009 in.)
Exhaust: 0.275  0.365 mm (0.011  0.014 in.)
Drive belt tensionAutomatic adjustment
Fuel
Fuel type
When you find these types of fuel label at the gas
station, use only the fuel with one of the following
labels.

EU area:
Unleaded gasoline conforming to European stan-
dard EN228 only
Except EU area:
Unleaded gasoline only
Research octane
number95 or higher
Fuel tank capacity
(Reference)35 L (9.2 gal., 7.7 Imp.gal.)
Lubrication system
Oil capacity
(Drain and refill  reference
*)
With filter2.8 L (3.0 qt., 2.5 Imp.qt.)
Without filter2.6 L (2.7 qt., 2.3 Imp.qt.)

5169-1. Specifications
AYGO_OM_Europe_OM9A012E
Ignition system
Spark plug
MakeDENSO FC16HR-Q8
Gap0.8 mm (0.031 in.)
NOTICE
■Iridium-tipped spark plugs
Use only iridium-tipped spark plugs. Do not adjust the spark plug gap.
Electrical system
Battery
Open voltage* at
20 C (68F):
12.3 V or higher
If the specific voltage is lower than the stan-
dard value, charge the battery.
(*: Voltage checked 20 minutes after the
engine and all the lights are turned off)
Charging rates5 A max.

526What to do if... (Troubleshooting)
AYGO_OM_Europe_OM9A012E
What to do if... (Troubleshooting)
●If you lose your keys or mechanical keys, new genuine keys or mechanical
keys can be made by any authorized Toyota retailer or Toyota authorized
repairer, or any reliable repairer. (P. 1 1 4 )
●Vehicles with a smart entry & start system
If you lose your electronic keys, the risk of vehicle theft increases signifi-
cantly. Contact any authorized Toyota retailer or Toyota authorized
repairer, or any reliable repairer immediately. (P. 131)
●Is the key battery weak or depleted? (P. 415)
●Vehicles with a smart entry & start system
Is the engine switch in IGNITION ON mode?
When locking the doors, turn the engine switch off. (P. 219)
●Vehicles with a smart entry & start system
Is the electronic key left inside the vehicle?
When locking the doors, make sure that you have the electronic key on
your person.
●The function may not operate properly due to the condition of the radio
wave. (P. 136, 146)
●Is the child-protector lock set?
The rear door cannot be opened from inside the vehicle when the lock is
set. Open the rear door from outside and then unlock the child-protector
lock. (P. 135)
If you have a problem, check the following before contacting any
authorized Toyota retailer or Toyota authorized repairer, or any
reliable repairer.
The doors cannot be locked, unlocked, opened or closed
You lose your keys
The doors cannot be locked or unlocked
The rear door cannot be opened (5-door models)

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

540Alphabetical index
AYGO_OM_Europe_OM9A012E
Switch
Airbag manual on-off
switch.................................... 49
Audio remote control
switches.............................. 292
Canvas top switch ................. 197
“DISP” button ........................ 105
Emergency flashers
switch.................................. 438
Engine switch ................. 214,217
Fog light switch ..................... 235
Ignition switch ................ 214,217
LDA (Lane Departure Alert)
switch.................................. 264
Light switches ....................... 231
Outside rear view mirror
switches.............................. 192
Paddle shift switches ............ 223
PCS (Pre-Collision
system) switch .................... 254
Power window switch ............ 194
Rear window and outside
rear view mirror
defoggers switch......... 354, 360
Rear window wiper and
washer switch ..................... 239
Seat heater switch ................ 364
Speed limiter ......................... 269
Stop & Start cancel switch .... 273
Telephone switches
*.... 323, 327
Tire pressure warning
reset switch......................... 405
VSC off switch....................... 280
Windshield wipers and
washer switch ..................... 237Tachometer .............................. 104
Tail lights .................................. 231
Light switch ........................... 231
Replacing light bulbs............. 432
Wattage ................................ 520
Telephone switches
*...... 323, 327
Theft deterrent system
Engine immobilizer system ..... 75
Tire inflation pressure ............. 410
Maintenance data ................. 518
Warning light ......................... 454
Tire pressure warning
system .................................... 405
Function ................................ 405
Initializing .............................. 405
Tire pressure warning reset
switch ................................. 406
Warning light ......................... 454
Tires .......................................... 404
Chains................................... 285
Checking ............................... 404
If you have a flat tire ..... 459, 481
Inflation pressure .................. 518
Replacing ...................... 459, 481
Rotating tires......................... 404
Size ....................................... 518
Snow tires ............................. 287
Spare tire .............................. 481
Tire pressure warning
system ................................ 405
Warning light ......................... 454
T

542Alphabetical index
AYGO_OM_Europe_OM9A012E
Warning lights .......................... 449
ABS ....................................... 451
Brake system ........................ 449
Charging system ................... 449
Electric power steering.......... 451
High engine coolant
temperature ........................ 450
LDA
(Lane Departure Alert) ....... 453
Low engine oil pressure ........ 449
Low fuel level ........................ 454
Malfunction indicator lamp .... 451
Multi-mode manual
transmission warning
light ..................................... 450
Open door ............................. 453
PCS (Pre-Collision
system) .............................. 452
Seat belt reminder light ......... 453
Slip indicator light .................. 453
Smart entry & start
system ........................ 453, 457
Speed limiter ......................... 452
SRS....................................... 451
“STOP” warning light............. 450
Stop & Start cancel
indicator .............................. 452
Tire pressure ......................... 454Washer.............................. 237, 239
Checking ............................... 402
Preparing and checking
before winter....................... 285
Switch ........................... 237, 239
Washing and waxing ............... 378
Weights..................................... 510
Wheels ...................................... 412
Replacing wheels.................. 412
Size ....................................... 518
Window glasses....................... 194
Windows ................................... 194
Power windows ..................... 194
Rear window
defogger ..................... 354, 360
Windshield wipers ................... 237
Winter driving tips ................... 285
Wireless remote control key... 112
Locking/Unlocking......... 133, 137
Replacing the battery ............ 415