2018 TOYOTA AURIS cooling

5448-2. Steps to take in an emergency
UK AURIS_HV_HB_EE (OM12M49E)
●The high engine coolant temperature (P. 491) 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 overheated. Reduced output power.” 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
The following may indicate that your vehicle is overheating.
Correction procedures
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5468-2. Steps to take in an emergency
UK AURIS_HV_HB_EE (OM12M49E)
■If “Hybrid system overheated. Reduced output power.” is
shown on the multi-information display
Stop the vehicle in a safe place.
Stop the hybrid system and carefully lift the hood.
After the hybrid system has
cooled down, inspect the
hoses and radiator 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.
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.
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2
3
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2
3
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5478-2. Steps to take in an emergency
UK AURIS_HV_HB_EE (OM12M49E)
8
When trouble arises
Start the hybrid system and check for the multi-information dis-
play.
If the message does not disappear:
Stop the hybrid system and cont act any authorized Toyota dealer
or repairer, or another duly qualified and equipped professional.
If the message is not displayed:
Have the vehicle inspected at the nearest authorized Toyota
dealer or repairer, or another duly qualified and equipped profes-
sional.
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.
● After the hybrid system has been turned off, check that the indicator on the
power switch and the “READY” indicator are off.
When the hybrid system is operating, the gasoline engine may automati-
cally start, or the cooling fan may suddenly operate even if the gasoline
engine stops. Do not touch or approach rotating parts such as the fan,
which may lead to fingers or clothing (especially a tie, a scarf or a muffler)
getting caught, resulting in serious injury.
● Do not loosen the coolant reservoir caps while the hybrid system and radi-
ator are hot.
High temperature steam or coolant could spray out.
6

5488-2. Steps to take in an emergency
UK AURIS_HV_HB_EE (OM12M49E)
NOTICE
■When adding engine/power control unit coolant
Add coolant slowly after the hybrid system has cooled down sufficiently.
Adding cool coolant to a hot hybrid system too quickly can cause damage to
the hybrid system.
■ 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.

5589-1. Specifications
UK AURIS_HV_HB_EE (OM12M49E)
Cooling system
Capacity (reference)
Gasoline engine
With an exhaust heat
recovery system
Without an exhaust heat
recovery system
Power control unit
7.0 L (7.4 qt., 6.2 Imp. qt.)
6.3 L (6.7 qt., 5.5 Imp. qt.)
2.1 L (2.2 qt., 1.8 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 technology
Do not use plain water alone.
Ignition system
Spark plug
MakeDENSO SC16HR11 or DENSO SC20HR11
Gap1.1 mm (0.043 in.)
NOTICE
■ Iridium-tipped spark plugs
Use only iridium-tipped spark plugs. Do not adjust the spark plug gap.
Electrical system
12-volt battery
Open voltage at 20 C
(68 F):
12.6  12.8 V Fully charged
12.2  12.4 V Half charged
11.8  12.0 V Discharged
(Voltage is checked 20 minutes after the hybrid
system and all lights are turned off.)
Charging rates5 A max.

581Alphabetical index
UK AURIS_HV_HB_EE (OM12M49E)
Console box ............................. 395
Cooling system ........................ 430
Hybrid system overheating ... 544
Cruise control .......................... 280
Cup holders .............................. 397
Curtain shield airbags ............... 38
Customizable features ............ 566
Daytime running light
system .................................... 233
Deck board ............................... 400
Defogger
Outside rear view mirrors ...... 384
Rear window ......................... 384
Windshield ............................ 384
Dimensions .............................. 552
Display
Multi-information display ....... 106
Warning message ................ 498
Do-it-yourself maintenance .... 422
Door lock
Back door .............................. 129
Side doors ............................. 124
Smart entry & start
system ....... ................. 124, 129
Wireless remote control ........ 124
Doors
Back door.............................. 129
Door lock....................... 124, 129
Door windows ....................... 186
Double locking system ............ 95
Open door warning
buzzer......................... 127, 130
Outside rear view mirrors...... 183
Rear door child-protector ...... 127
Side doors............................. 124
Double locking system ............. 95
Drive information ..................... 110
Driving ...................................... 190
Break-in tips .......................... 191
Correct posture ....................... 32
Hybrid vehicle driving tips ..... 311
Procedures ........................... 190
Winter drive tips .................... 314
ECB (Electronically
Controlled Brake System) .... 305
Eco drive mode ........................ 222
Electric motor
(traction motor) ....................... 71
Electric Power Steering
(EPS)....................................... 306
Warning light ......................... 492
Electronic key .......................... 120
Battery-saving
function ....................... 136, 156
If the electronic key does not
operate properly ................. 536
Replacing the battery ............ 459
Electronically Controlled
Brake System (ECB) ............. 305
D
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*: For vehicles with navigation/multimedia system, refer to “Navigation
and multimedia system Owner’s manual”.