2021 TOYOTA AYGO cooling

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
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5068-2. Steps to take in an emergency
AYGO_OM_Europe_OM9A012E
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.

5159-1. Specifications
9
Vehicle specifications
AYGO_OM_Europe_OM9A012E
*: The identification code is indicated
at the locations shown in the illus-
tration.
Cooling system
Capacity
(Reference)0Q011,
0Q021
*3.7 L (3.9 qt., 3.3 Imp.qt.)
0Q090*4.4 L (4.6 qt., 3.9 Imp.qt.)
Coolant type
Use either of the following:
• “Toyota Super Long Life Coolant”
• Similar high-quality ethylene glycol-based non-
silicate, non-amine, non-nitrite, and non-borate
coolant with long-life hybrid organic acid tech-
nology
Do not use plain water alone.
On the back side

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