2013 TOYOTA AYGO cooling

265 4-3. Do-it-yourself maintenance
4
Maintenance and care
AYGO_WE_99G80E
Coolant selection
Only use “Toyota Super Long Life Coolant” or a similar high quality ethylene
glycol based non-silicate, non-amine, non-nitrite, and non-borate coolant
with long-life hybrid organic acid technology.
“Toyota Super Long Life Coolant” is a mixture of 50% coolant and 50%
deionized water. (Minimum temperature: -35C [-31F])
For more details about engine coolant, contact any authorized Toyota dealer
or repairer, or another duly qualified and equipped professional.
If the coolant level drops within a short time of replenishing
Visually check the radiator, hoses, engine coolant reservoir cap, drain cock
and water pump.
If you cannot find a leak, have any authorized Toyota dealer or repairer, or
another duly qualified and equipped professional, test the cap and check for
leaks in the cooling system.
CAUTION
When the engine is hot
Do not remove the radiator cap.
The cooling system may be under pressure and may spray hot coolant if the
cap is removed, causing serious injuries, such as burns.
NOTICE
When adding coolant
Coolant is neither plain water nor straight antifreeze. The correct mixture of
water and antifreeze must be used to provide proper lubrication, corrosion
protection and cooling. Be sure to read the antifreeze or coolant label.
If you spill coolant
Be sure to wash it off with water to prevent it from damaging parts or paint.

286 4-3. Do-it-yourself maintenance
AYGO_WE_99G80E
*1: Vehicles without VSC system
*2: Vehicles with VSC system
*3: Replace the fuse with one of the same ampere rating as the original 10 AM2 30 AStarting system, IG1, IG2, STA
fuses
11 HAZARD 10 ATurn signal lights, emergency
flashers, gauges and meters
12 H-LP MAIN 20 A H-LP LH, H-LP RH fuses
13 DOME 15 AGauges and meters, interior light,
audio system, tachometer
14 EFI 15 AElectric cooling fan, multiport fuel
injection system/sequential multi-
port fuel injection system
15 HORN 10 A Horn
16 SPARE 7.5 A Spare fuse
17 SPARE 10 A Spare fuse
18 SPARE 15 A Spare fuse
19 AMT 50 A Multi-mode manual transmission
20 RADIATOR30 A
*3
Electric cooling fan
40 A*3
21ABS
*140 AAnti-lock brake system
VSC*250 AAnti-lock brake system and vehicle
stability control system
22 EMPS 50 A Electric power steering system
FuseAmpereCircuit

289 4-3. Do-it-yourself maintenance
4
Maintenance and care
AYGO_WE_99G80EInstrument panel (left side)
FuseAmpereCircuit
1ECU-IG 7.5 A
Anti-lock brake system, vehicle sta-
bility control system, electric power
steering system, electric cooling fan
2BACK UP 10 ABack-up lights, power door lock
system, wireless remote control
system, power windows, rear win-
dow defogger, tachometer, air con-
ditioning system, heater system
3 WIP 20 AWindshield wiper and washer, rear
window wiper and washer
4 ACC 15 A Power outlet, audio system
5IG1 7.5 AWindshield wiper and washer, rear
window wiper and washer, anti-lock
brake system, electric power steer-
ing system, electric cooling fan,
back-up lights, power door lock
system, wireless remote control
system, power windows, rear win-
dow defogger, tachometer, air con-
ditioning system, heater system
6IG2 15 AMultiport fuel injection system/
sequential multiport fuel injection
system, SRS airbag system,
gauges and meters, daytime run-
ning light system, multi-mode man-
ual transmission

5
335 5-2. Steps to take in an emergency
When trouble arises
AYGO_WE_99G80E
NOTICE
When handling jumper cables
When connecting the jumper cables, ensure that they do not become entan-
gled in the cooling fan or belt.

336
5-2. Steps to take in an emergency
AYGO_WE_99G80E
If your vehicle overheats
The following may indicate that your vehicle is overheating.
The high engine coolant temperature warning light (P. 313)
comes on or flashes, or a loss of engine power is experienced.
(For example, the vehicle speed does not increase.)
Steam comes out from under the hood.
Follow the correction procedure as described below.
Stop the vehicle in a safe place and turn off the air condi-
tioning system, 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 (radi-
ator) for any leaks.
Cooling fan
Radiator
If a large amount of coolant
leaks, immediately contact any
authorized Toyota dealer or
repairer, or another duly quali-
fied and equipped profes-
sional.

338 5-2. Steps to take in an emergency
AYGO_WE_99G80E
CAUTION
To prevent an accident or injury when inspecting under the hood of
your vehicle
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, caus-
ing serious injuries such as burns.
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 and the coolant reservoir cap while the
engine and radiator are hot.
Serious injury, such as burns, may result from hot coolant and steam
released under pressure.
Start the engine and turn the air conditioning system on to
check that the radiator cooling fan operates and to check
for coolant leaks from the radiator or hoses.
The fan operates 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 temperatures.)
If the fan is not operating:
Stop the engine immediately and contact any authorized
Toyota dealer or repairer, or another duly qualified and
equipped professional.
If the fan is operating:
Have the vehicle inspected at the nearest authorized
Toyota dealer or repairer, or another duly qualified and
equipped professional.

5
339 5-2. Steps to take in an emergency
When trouble arises
AYGO_WE_99G80E
NOTICE
When adding engine coolant
Wait until the engine has cooled down before adding engine coolant.
When adding coolant, do so slowly. 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 commercially available coolant additives.

352 6-1. Specifications
AYGO_WE_99G80E
Cooling system
*: The identification code are stamped on the locations shown in the below
illustration.
Capacity (Reference)0Q07
*:
4.4 L (4.6 qt., 3.9 Imp.qt.)
0Q01, 0Q02
*:
4.0 L (4.2 qt., 3.5 lmp.qt.)
Coolant typeUse either of the following:
• “Toyota Super Long Life Coolant”
• A similar high-quality ethylene glycol-based non-
silicate, non-amine, non-nitrite, and non-borate
coolant with long-life hybrid organic acid technol-
ogy
Do not use plain water alone.
On the back side