Page 582 of 632
5828-2. Steps to take in an emergency
YARIS_HV_OM_Europe_OM52J66E
■If the high engine coolant temperature warning light comes on
or flashes
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 fan
If a large amount of coolant
leaks, immediately contact any
authorized Toyota retailer or
Toyota authorized repairer, or
any reliable repairer.
The coolant level is satisfac-
tory if it is between the
“FULL” and “LOW” lines on
the reservoir.
Reservoir
“FULL”
“LOW”
Radiator cap
Correction procedures
1
2
3
1
2
4
1
2
3
4
Page 584 of 632
5848-2. Steps to take in an emergency
YARIS_HV_OM_Europe_OM52J66E
■If the hybrid system overheat warning light comes on
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 fan
If a large amount of coolant
leaks, immediately contact any
authorized Toyota retailer or
Toyota authorized repairer, or
any reliable repairer.
The coolant level is satisfac-
tory if it is between the “F”
and “L” lines on the reservoir.
Reservoir
“F” line
“L” line
Add coolant if necessary.
Water can be used in an emer-
gency if coolant is unavailable.
1
2
3
1
2
4
1
2
3
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Page 585 of 632

5858-2. Steps to take in an emergency
8
When trouble arises
YARIS_HV_OM_Europe_OM52J66E
Start the hybrid system and check for the hybrid system overheat
warning light (with monochrome display) or warning message
(with color display).
If the warning light (with monochrome display) or warning mes-
sage (with color display) does not go off:
Stop the hybrid system and contact any authorized Toyota
retailer or Toyota authorized repairer, or any reliable repairer.
If the warning light (with monochrome display) or warning mes-
sage (with color display) goes off:
Have the vehicle inspected at the nearest any authorized Toyota
retailer or Toyota authorized repairer, or any reliable repairer.
WARNING
■ 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.
● 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 fans 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 cap while the hybrid system and radia-
tor are hot.
Serious injuries, such as burns, may result from hot coolant and steam
released under pressure.
6
Page 596 of 632
5969-1. Specifications
YARIS_HV_OM_Europe_OM52J66E
Cooling system
Capacity
(Reference)
Gasoline engine
4.5 L (4.8 qt., 4.0 Imp.qt.)
Power control unit
1.6 L (1.7 qt., 1.4 Imp.qt.)
Coolant type
Use 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 technology
Do not use plain water alone.
Ignition system
Spark plug
MakeDENSO FK16R-A8
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
12-volt battery
Open voltage* at
20°C (68°F):
12.0 V or higher
If the specific voltage is lower than the standard
value, charge the battery.
(*: Voltage is checked 20 minutes after the
hybrid system and all lights are turned off.)
Charging rates 3 4 A max.
Page 600 of 632
6009-1. Specifications
YARIS_HV_OM_Europe_OM52J66E
Light bulbs
Light BulbsWTyp e
Exterior
Halogen headlights55A
Front fog lights*19B
Front position light/daytime running lights
(bulb type)21/5C
Front turn signal lights21D
Side turn signal lights5D
Rear turn signal lights21D
Stop/tail lights (bulb type)21/5E
Back-up light16C
License plate lights5C
Interior
Vanity lights*5F
Personal lights/interior light5C
Luggage compartment light5F
A: HIR2 halogen bulbs
C: Wedge base bulbs (clear)
E: Single end bulbs (clear)
B: H16 halogen bulbs
D: Wedge base bulbs (amber)
F: Double end bulbs
*: If equipped
Page 601 of 632

6019-1. Specifications
9
Vehicle specifications
YARIS_HV_OM_Europe_OM52J66E
Fuel information
■Use of ethanol blended gasoline in a gasoline engine
Toyota allows the use of ethanol blended gasoline where the ethanol content
is up to 10%. Make sure that the ethanol blended gasoline to be used has a
Research Octane Number that follows the above.
■ If your engine knocks
● Consult any authorized Toyota retailer or Toyota authorized repairer, or any
reliable repairer.
● You may occasionally notice light knocking for a short time while accelerat-
ing or driving uphill. This is normal and there is no need for concern.
When you find these types of fuel label at the gas station, use
only the fuel with one of the following labels.
EU area:
You must only use unleaded gasoline conforming to European
standard EN228.
Select unleaded gasoline with a Research Octane Number of 95
or higher for optimum engine performance.
Except EU area:
You must only use unleaded gasoline.
Select unleaded gasoline with a Research Octane Number of 95
or higher for optimum engine performance.
Page 605 of 632
6059-2. Customization
9
Vehicle specifications
YARIS_HV_OM_Europe_OM52J66E
■Gauges, meters and multi-information display ( P. 123, 125)
*1: Vehicles with color display only
*2: The default setting varies according to countries.
*3: German, French, Spanish, Italian, Portuguese, Dutch, Swedish,
Norwegian, Danish, Russian, Finnish, Greek, Polish, Ukrainian, Turkish,
Hungarian, Czech, Slovak, Romanian
FunctionDefault
setting
Customized
setting
Language*1English*3OOO
Units*1, 2
km
(km/L)
km
(L/100 km) OOO
miles
(MPG) OOO
°C °F O — O
EV Indicator Light ON OFF O — O
Drive information*1Elapsed
Time
Average
Speed O—O
Pop-up display*1Incoming
calls ON OFF O — O
123
Page 607 of 632
6079-2. Customization
9
Vehicle specifications
YARIS_HV_OM_Europe_OM52J66E
■Follow me home system* ( P. 239)
*: If equipped
■Automatic light control system ( P. 238)
■PCS (Pre-Crash Safety system)* (P. 262)
*: If equipped
■LDA (Lane Departure Alert)* ( P. 279)
*: If equipped
FunctionDefault
setting
Customized
setting
Time elapsed before headlights
automatically turn off30 seconds
60 seconds
—— O90 seconds
120 seconds
123
FunctionDefault
setting
Customized
setting
Light sensor sensitivity Level 3 Level 1 to 5 — O O
123
FunctionDefault
setting
Customized
setting
Pre-Crash Safety systemONOFFO—O
Warning timingMiddleFarO—ONear
123
FunctionDefault
setting
Customized
setting
SensitivityHighStandardO—O
123