2014 TOYOTA AURIS HYBRID cooling

5776-3. Do-it-yourself maintenance
UK_AURIS/AURIS_HV_EE (OM12G88E)
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Maintenance and care
*1: Vehicles without discharge headlights (low beam)
*2: Vehicles with discharge headlights (low beam)
39H-LP LH-LO10 A*1Left-hand headlight (low beam), manual
headlight leveling dial
15 A*2Left-hand headlight (low beam)
40PM-IGCT10 AHybrid system
41PCU10 AHybrid system
42INV W/PMP10 ACooling system
43IGTC NO.210 AHybrid system, P position control system
44ECU-B NO.110 A
Main body ECU, smart entry & start sys-
tem, clock, electronically controlled brake
system, power door lock system, tire
pressure warning system
45RADIO20 AAudio system
46DOME7.5 AInterior lights, vanity lights, luggage com-
partment light, main body ECU
47MIR-HTR10 A
Multiport fuel injection system/sequential
multiport fuel injection system, outside
rear view mirror defoggers
48BATT FAN10 A
Multiport fuel injection system/sequential
multiport fuel injection system, cooling
fan
49IG215 A
Multiport fuel injection system/sequential
multiport fuel injection system, gauge
and meters, SRS airbag system
50HORN10 AHorn
51EFI-MAIN25 A
Multiport fuel injection system/sequential
multiport fuel injection system, EFI NO.1,
EFI NO.2, fuel pump, EFI-B
FuseAmpereCircuit

5796-3. Do-it-yourself maintenance
UK_AURIS/AURIS_HV_EE (OM12G88E)
6
Maintenance and care
14WIPER NO.225 AWindshield wipers
15WIPER RR15 ARear window wiper
16WIPER NO.125 AWindshield wipers
17CIG15 APower outlet
18ACC7.5 AOutside rear view mirrors, audio system,
main body ECU, clock, power outlet
19SFT LOCK-ACC5 A
20TA I L10 AFront position lights, tail lights, license
plate lights, front fog lights, rear fog light
21PA N E L7.5 ASwitch illumination, instrument cluster
lights, glove box light, main body ECU
22WIPER-S5 A
23ECU-IG NO.17.5 AElectric cooling fan, AFS, electronically
controlled brake system
24ECU-IG NO.27.5 A
Back-up lights, multiport fuel injection
system/sequential multiport fuel injection
system, audio system, AFS, Toyota park-
ing assist-sensor
25ECU-IG NO.37.5 A
Inside rear view mirror, headlight cleaner,
audio system, AFS, panoramic roof
shade, windshield washer, tire pressure
warning system
26HTR-IG7.5 AAir conditioning system, rear window
defogger, seat heaters
27ECU-IG NO.47.5 A
Main body ECU, front passenger seat
belt reminder light, airbag manual on-off
system, outside rear view mirrors, Toyota
parking assist-sensor
28ECU-IG NO.55 AElectric power steering
29IGN7.5 A
Smart entry & start system, stop lights,
electronically controlled brake system,
power management system
30S/HTR15 ASeat heaters
31METER5 AGauge and meters
FuseAmpereCircuit

7147-2. Steps to take in an emergency
UK_AURIS/AURIS_HV_EE (OM12G88E)
CAUTION
12-volt battery precautions
The 12-volt battery contains poisonous and corrosive acidic electrolyte,
while related parts contain lead and lead compounds. Observe the following
precautions when handling the 12-volt battery:
When working with the 12-volt battery, always wear safety glasses and
take care not to allow any 12-volt battery fluids (acid) to come into contact
with skin, clothing or the vehicle body.
Do not lean over the 12-volt battery.
In the event that 12-volt 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 12-volt battery-related parts.
Do not allow children near the 12-volt battery.
NOTICE
When handling jumper cables
When connecting the jumper cables, ensure that they do not become entan-
gled in the cooling fans or engine drive belt.

7207-2. Steps to take in an emergency
UK_AURIS/AURIS_HV_EE (OM12G88E)
Vehicles without a multi-information display: The high engine cool-
ant temperature warning light (P. 614) comes on or a loss of
engine power is experienced. (For example, the vehicle speed
does not increase.)
Vehicles with a multi-information display: The engine coolant tem-
perature gauge (P. 128) enters the red zone or a loss of engine
power is experienced. (For example, 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 dealer or
repairer, or another duly quali-
fied and equipped professional.
If your vehicle overheats (except hybrid
model)
The following may indicate that your vehicle is overheating.
Correction procedures
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2
3
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2

7217-2. Steps to take in an emergency
UK_AURIS/AURIS_HV_EE (OM12G88E)
7
When trouble arises
The coolant level is satisfactory if it is between the “FULL” and
“LOW” lines on the reservoir.
Reservoir
“FULL”
“LOW”
Add engine coolant if neces-
sary.
Water can be used in an emer-
gency if engine coolant is unavail-
able.
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 immedi-
ately 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.)
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Except 1AD-FTV engine1AD-FTV engine
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7227-2. Steps to take in an emergency
UK_AURIS/AURIS_HV_EE (OM12G88E)
If the fan is not operating:
Stop the engine immediately and contact any authorized Toyota
dealer or repairer, or another duly qualified and equipped profes-
sional.
If the fan is operating:
Have the vehicle inspected at the nearest authorized Toyota dealer
or repairer, or another duly qualified and equipped professional.
CAUTION
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 coolant reservoir 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 additive.
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7237-2. Steps to take in an emergency
UK_AURIS/AURIS_HV_EE (OM12G88E)
7
When trouble arises
The high engine coolant temperature (P. 631) is shown on the
multi-information display or a loss of hybrid system power is experi-
enced. (For example, the vehicle speed does not increase.)
“HYBRID SYSTEM OVERHEAT” is shown on the multi-information
display.
Steam comes out from under the hood.
If the high engine coolant temperature is shown on the multi-
information display
Stop the vehicle in a safe place and turn off the air conditioning
system, and then stop the hybrid system.
If you see steam:
Carefully lift the hood after the steam subsides.
If you do not see steam:
Carefully lift the hood.
After the hybrid system has
cooled down sufficiently,
inspect the hoses and radia-
tor core (radiator) for any
leaks.
Radiator
Cooling fans
If a large amount of coolant
leaks, immediately contact
any authorized Toyota dealer
or repairer, or another duly
qualified and equipped pro-
fessional.
If your vehicle overheats (hybrid model)
The following may indicate that your vehicle is overheating.
Correction procedures
1
2
3
1
2

7247-2. Steps to take in an emergency
UK_AURIS/AURIS_HV_EE (OM12G88E)
The coolant level is satisfac-
tory if it is between the
“FULL” and “LOW” lines on
the reservoir.
Reservoir
“FULL”
“LOW”
Add coolant if necessary.
Water can be used in an emer-
gency if coolant is unavailable.
Start the hybrid system and turn the air conditioning system on to
check that the radiator cooling fans operate and to check for
coolant leaks from the radiator or hoses.
The fans operate when the air conditioning system is turned on immedi-
ately after a cold start. Confirm that the fans are operating by checking
the fan sound and air flow. If it is difficult to check these, turn the air con-
ditioning system on and off repeatedly.
(The fan may not operate in freezing temperatures.)
If the fans are not operating:
Stop the hybrid system immediately and contact any authorized
Toyota dealer or repairer, or another duly qualified and equipped
professional.
If the fans are operating:
Have the vehicle inspected at the nearest authorized Toyota
dealer or repairer, or another duly qualified and equipped profes-
sional.
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