2016 TOYOTA AVALON HYBRID cooling

4057-2. Steps to take in an emergency
7
When trouble arises
AVALON_HV_U (01999-07002)
Master warning light
The master warning light also
comes on or flashes in order to
indicate that a message is cur-
rently being displayed on the multi-
information display.
Multi-information display
If any of the warning messages is shown again after its correction pro-
cedure has been performed, contact your Toyota dealer.
■ Warning buzzer
In some cases, the buzzer may not be heard because of noisy place or an
audio sound.
■ If “Hybrid System Overh eat/Stop the Vehicle in a Safe Place” is shown
Coping method: P. 428
This message may be displayed when driving under severe operating condi-
tions. (For example, when driving up a long steep hill.)
■ If “Maintenance Required for Hybr id Battery Cooling Parts at Your
Dealer” is shown.
The filter may be clogged, the air intake vent may be blocked or there may be
a gap in the duct. Have maintenance performed on the hybrid battery (trac-
tion battery) cooling component at your Toyota dealer.
If a war ning mess age is displayed
The multi-information display shows warnings of system mal-
functions, incorrectly performed operations, messages that indi-
cate a need for maintenance and reminder messages. When a
message is shown, perform th e correction procedure appropri-
ate to the message.
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4287-2. Steps to take in an emergency
AVALON_HV_U (01999-07002)
●The engine coolant temperature gauge enters the red zone or a
loss of power is experienced. (For example, the vehicle speed does
not increase.)
● “Hybrid System Overhe at/Stop the Vehicle in a Safe Place” is
shown on the multi-information display.
● Steam comes out from under the hood.
■If the needle of the engine coolant temperature gauge enters
the red zone
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
your Toyota dealer.
If your vehicle overheats
The following may indicate that your vehicle is overheating:
Correction procedures
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4297-2. Steps to take in an emergency
7
When trouble arises
AVALON_HV_U (01999-07002)
The coolant level is satisfac-
tory if it is between the “F”
and “L” lines on the reservoir.Reservoir
“F” line
“L” line
Radiator cap
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 fan operates and to check for
coolant leaks from th e 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 condi-
tioning system on and off repeatedly.
(The fan may not operate in freezing temperatures.)
If the fan is not operating:
Stop the hybrid system immediately and contact your Toyota
dealer.
If the fan is operating:
Have the vehicle inspected at the nearest Toyota dealer.
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4307-2. Steps to take in an emergency
AVALON_HV_U (01999-07002)■
If “Hybrid System Overheat/Stop the Vehicle in a Safe Place” 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 fan
If a large amount of coolant
leaks, immediately contact
your Toyota dealer
The coolant level is satisfac-
tory if it is between the
“FULL” and “LOW” lines on
the reservoir.Reservoir
“FULL” line
“LOW” line
Add coolant if necessary.
Water can be used in an emer-
gency if coolant is unavailable.
Start the hybrid system and chec k for the multi-information dis-
play.
If the message does not disappear:
Stop the hybrid system and contact your Toyota dealer.
If the message is not displayed:
Have the vehicle in spected at the nearest Toyota dealer.
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4317-2. Steps to take in an emergency
7
When trouble arises
AVALON_HV_U (01999-07002)
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.
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 additives.
●Do not loosen the radiator cap or the
coolant reservoir caps while the hybrid
system and radiator are hot.
Serious injury, such as burns, may
result from hot coolant and steam
released under pressure.

4418-1. Specifications
8
Vehicle specifications
AVALON_HV_U (01999-07002)
Cooling system
Capacity
Gasoline
engine7.6 qt. (7.2 L, 6.3 Imp. qt.)
Power
control unit3.4 qt. (3.2 L, 2.8 Imp. qt.)
Coolant type
Use either of the following:• “Toyota Super Long Life Coolant”
• Similar high-quality ethylene glycol-basednon-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 FK16HR-A8
Gap0.031 in. (0.8 mm)
NOTICE
■ Iridium-tipped spark plugs
Use only iridium-tipped spark plugs. Do not adjust the spark plug gap.

478Alphabetical index
AVALON_HV_U (01999-07002)
Child safety ................................ 5412-volt battery
precautions ................. 352, 427
Airbag precautions .................. 39
Child restraint system ............. 55
How your child should wear the seat belt .......................... 32
Installing child restraints ......... 59
Moon roof precautions .......... 154
Power window lock switch .... 148
Power window precautions ... 150
Rear door child-protectors .... 113
Removed electronic key battery precautions ...... 373
Seat belt extender precautions ........................... 35
Seat belt precautions .............. 58
Seat heater precautions........ 281
Trunk precautions ................. 119
Child-protectors....................... 113
Cleaning ........................... 324, 327
Aluminum wheels.................. 325
Exterior ................................. 324
Interior................................... 327
Seat belts .............................. 328
Clock ......................................... 298
Coat hooks ............................... 304
Compass .................................. 318
Condenser ................................ 347 Console box ............................. 289
Consumption screen............... 100
Coolant ..................................... 345
Capacity................................ 441
Checking............................... 345
Preparing and checking before winter ...................... 268
Cooling system........................ 345
Engine overheating............... 428
Hybrid system overheating ... 428
Cruise control
Cruise control ....................... 245
Dynamic radar cruise control ................................ 232
Cup holders ............................. 290
Curtain shield airbags............... 37
Customizable features ............ 461