engine coolant TOYOTA AVALON HYBRID 2021 (in English) User Guide

4547-2. Steps to take in an emergency
●Fluid leaks under the vehicle.
(Water dripping from the air conditioning after use is normal.)
●Flat-looking tires or uneven tire wear
●Engine coolant temperature gauge needle continually points higher
than normal
●Changes in exhaust sound
●Excessive tire squeal when cornering
●Strange noises related to the suspension system
●Pinging or other noises related to the hybrid system
●Engine missing, stumbling or running roughly
●Appreciable loss of power
●Vehicle pulls heavily to one side when braking
●Vehicle pulls heavily to one side when driving on a level road
●Loss of brake effectiveness, spongy feeling, pedal almost touches
the floor
If you think something is wrong
If you notice any of the following symptoms, your vehicle proba-
bly needs adjustment or repair. Contact your Toyota dealer as
soon as possible.
Visible symptoms
Audible symptoms
Operational symptoms

4557-2. Steps to take in an emergency
7
When trouble arises
If a warning light turns on or a war ning
buzzer sounds
Calmly perform the following actions if any of the warning lights
comes on or flashes. If a light comes on or flashes, but then
goes off, this does not necessarily indicate a malfunction in the
system. However, if this continues to occur, have the vehicle
inspected by your Toyota dealer.
Warning light and warning buzzer list
Warning lightWarning light/Details/Actions
(Red)
Brake system warning light (warning buzzer)
Indicates that:
• The brake fluid level is low; or
• The brake system is malfunctioning
Immediately stop the vehicle in a safe place and con-
tact your Toyota dealer. Continuing to drive the vehi-
cle may be dangerous.
(Yellow)
Brake system warning light (warning buzzer)
Indicates a malfunction in:
• The regenerative braking system;
• The electronically controlled brake system; or
• The electric parking brake
Have the vehicle inspected by your Toyota dealer
immediately.
High coolant temperature warning light (warning
buzzer)
*1
Indicates that the engine coolant temperature is too high
Immediately stop the vehicle in a safe place.
Handling method (P. 494)
Charging system warning light*1
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Immediately stop the vehicle in a safe place and con-
tact your Toyota dealer.
Low engine oil pressure warning light (warning
buzzer)
*1
Indicates that the engine oil pressure is too low
Immediately stop the vehicle in a safe place and con-
tact your Toyota dealer.

4677-2. Steps to take in an emergency
7
When trouble arises
■Warning messages
The warning messages explained below may differ from the actual messages
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■System warning lights
The master warning light does not come on or flash in the following cases.
Instead, a separate system warning light will come on along with a message
shown on the multi-information display.
●Malfunction in the ABS
The ABS warning light comes on. (P. 456)
●Malfunction in the brake system
The brake system warning light (yellow) comes on. (P. 455)
●Malfunction in the tire pressure warning system
The tire pressure warning light comes on. (P. 458)
●Remaining fuel level is low
The low fuel level warning light comes on. (P. 458)
■If a message instructing to refer to the Owner’s Manual is displayed
●If the following messages are shown, there may be a malfunction.
Immediately stop the vehicle in a safe place and contact your Toyota dealer.
Continuing to drive the vehicle may be dangerous.
• “Low Braking Power Stop in a Safe Place See Owner’s Manual”
• “Oil Pressure Low Stop in a Safe Place See Owner’s Manual”
• “Charging System Malfunction Stop in a Safe Place See Owner’s Man-
ual”
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Immediately have the vehicle inspected by your Toyota dealer.
• “Hybrid System Malfunction”
• “Check Engine”
• “Hybrid Battery System Malfunction”
• “Accelerator System Malfunction”
• “Smart Key System Malfunction”
●If “Engine Coolant Temp High Stop in a Safe Place See Owner’s Manual” is
displayed, follow the instructions accordingly. (P. 494)
●If “Maintenance Required for Traction Battery Cooling Parts See Owner’s
Manual” is displayed, follow the instructions accordingly. (P. 434)

4947-2. Steps to take in an emergency
■If the needle of the engine coolant temperature gauge enters
the red zone or “Engine Coolant Temp High Stop in a Safe
Place See Owner’s Manual” is shown on the multi-information
display
Stop the vehicle in a safe place and turn off the air conditioning sys-
tem, 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 radiator
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.
●The needle of the engine coolant temperature gauge (P. 98)
enters the red zone or a loss of hybrid system power is experi-
enced. (For example, the vehicle speed does not increase.)
●“Engine Coolant Temp High Stop in a Safe Place See Owner’s
Manual” or “Hybrid System Overheated Output Power Reduced”
is shown on the multi-information display
●Steam comes out from under the hood.
Correction procedures
1
2
3
1
2

4977-2. Steps to take in an emergency
7
When trouble arises
After stopping the hybrid system and waiting for 5 minutes or
more, start the hybrid system again and check for the multi-infor-
mation display.
If the message does not disappear:
Stop the hybrid system and contact your Toyota dealer.
If the message is not displayed:
The hybrid system temperature has dropped and the vehicle
may be driven normally.
However, if the message appears again frequently, contact your To y o t a
dealer.
WARNING
■To prevent an accident or injury when inspecting under the hood of
your vehicle
Observe the following precautions.
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●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 “READY” indi-
cator is off. When the hybrid system is operating, the gasoline engine may
automatically 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 muf-
fler) getting caught, resulting in serious injury.
●Do not loosen the radiator cap and the coolant reservoir cap while the
hybrid system and radiator are hot.
High temperature steam or coolant could spray out.
NOTICE
■When adding engine/power control unit coolant
Wait until the hybrid system has cooled down before adding engine/power
control unit coolant.
When adding coolant, do so slowly. Adding cool coolant to a hot hybrid sys-
tem 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.
6

5068-1. Specifications
How to read oil container label:
API registered mark is added to
some oil containers to help you
select the oil you should use.
Cooling system
Capacity
(Reference)
Gasoline engine
6.4 qt. (6.1 L, 5.4 Imp. qt.)
Power control unit
1.9 qt. (1.8 L, 1.6 Imp. qt.)
Coolant typeUse 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 FC16HR-Q8
Gap0.031 in. (0.8 mm)
NOTICE
■Iridium-tipped spark plugs
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5208-1. Specifications
Glossary of tire terminology
Tire related termMeaning
Cold tire inflation pres-
sure
Tire pressure when the vehicle has been
parked for three hours or more, or has not
been driven more than 1 mile or 1.5 km under
that condition
Maximum inflation
pressureThe maximum cold inflated pressure to which
a tire may be inflated, shown on the sidewall
of the tire
Recommended infla-
tion pressureCold tire inflation pressure recommended by a
manufacturer
Accessory weight
The combined weight (in excess of those stan-
dard items which may be replaced) of hybrid
transmission, power steering, power brakes,
power windows, power seats, radio and
heater, to the extent that these items are avail-
able as factory-installed equipment (whether
installed or not)
Curb weight
The weight of a motor vehicle with standard
equipment, including the maximum capacity of
fuel, oil and coolant, and if so equipped, air
conditioning and additional weight optional
engine
Maximum loaded vehi-
cle weight
The sum of:
(a) Curb weight
(b) Accessory weight
(c) Vehicle capacity weight
(d) Production options weight
Normal occupant
weight150 lb. (68 kg) times the number of occupants
specified in the second column of Table 1
*
that follows
Occupant distributionDistribution of occupants in a vehicle as speci-
fied in the third column of Table 1
* below

548Alphabetical index
Engine
ACCESSORY mode ............. 197
Compartment ........................ 403
Engine switch........................ 196
Hood ..................................... 401
How to start the hybrid
system ................................ 196
Identification number ............ 503
If your vehicle has to be
stopped in an
emergency.......................... 449
Ignition switch
(power switch) .................... 196
Overheating .......................... 494
Power switch......................... 196
Engine coolant
Capacity ................................ 506
Checking ............................... 407
Preparing and checking
before winter....................... 333
Engine coolant temperature
gauge........................................ 98
Engine oil
Capacity ................................ 505
Checking ............................... 404
Preparing and checking
before winter....................... 333
Engine switch .......................... 196
Enhanced VSC ......................... 323
EPS
(Electric Power Steering)...... 324
Warning light ......................... 457
EV drive mode.......................... 202
Event data recorder
(EDR) ........................................ 10
Exclusive jump starting
terminal .................................. 487Flat tire ..................................... 471
Floor mats .................................. 24
Fluid
Brake .................................... 507
Hybrid transmission .............. 507
Washer ................................. 410
Front interior light ................... 353
Front passenger occupant
classification system .............. 48
Front passenger’s seat belt
reminder light ........................ 458
Front personal lights............... 353
Front seat heaters ................... 349
Front seats ............................... 155
Adjustment............................ 155
Cleaning ............................... 389
Correct driving posture ........... 26
Driving position memory ....... 159
Head restraints ..................... 164
Power easy access
system ................................ 159
Seat heaters ......................... 349
Seat ventilators ..................... 349
Front side marker lights
Light switch ........................... 218
Replacing light bulbs ............ 445
Front turn signal lights
Replacing light bulbs ............ 445
Turn signal lever ................... 211
Fuel
Capacity................................ 504
Fuel gauge.............................. 98
Information............................ 510
Refueling .............................. 230
Type.............................. 504, 510
Warning light......................... 458
Fuel consumption ........... 106, 131
Fuel filler door ......................... 230
If the fuel filler door
cannot be opened .............. 234
Refueling .............................. 230
Fuses ........................................ 442F

552Alphabetical index
Navigation system*
Noise from under vehicle............ 6
Odometer.................................... 98
Oil
Engine oil .............................. 505
Opener
Fuel filler door ....................... 233
Hood ..................................... 401
Trunk..................................... 144
Outside rear view mirrors ....... 170
Adjusting and folding ............ 170
Blind spot monitor (BSM) ...... 276
Linked mirror function
when reversing ................... 171
Mirror position memory ......... 159
Outside rear view mirror
defoggers ........................... 343
Outside temperature
display ...................................... 98
Overheating, Hybrid
system .................................... 494Paddle shift switches .............. 208
Panic mode .............................. 135
Panoramic view monitor*
Parking brake........................... 212
Parking brake engaged
warning buzzer/
message............................. 215
Warning light......................... 456
Parking lights........................... 218
Light switch ........................... 218
Replacing light bulbs ............ 445
PCS (Pre-Collision
System) .................................. 242
Warning light......................... 457
Personal lights......................... 353
Power control unit ..................... 79
Power control unit coolant ..... 407
Capacity................................ 506
Checking............................... 407
Preparing and checking
before winter ...................... 333
Power outlet ............................. 363
Power steering
(Electric power steering
system) .................................. 324
Warning light......................... 457
Power switch ........................... 196
Power windows ....................... 173
Door lock linked window
operation ............................ 175
Jam protection function ........ 173
Operation .............................. 173
Window lock switch .............. 173
Pre-Collision System
(PCS) ...................................... 242
Warning light......................... 457
Premium Audio
*
N
O
P

559Alphabetical index
Warning lights............................ 93
ABS....................................... 456
Brake hold operated
indicator .............................. 457
Brake Override System......... 456
Brake system ........................ 455
Charging system ................... 455
Drive-Start Control ................ 456
Driver’s seat belt
reminder ............................. 458
Electric power steering ......... 457
Front passenger’s
seat belt reminder............... 458
High coolant temperature ..... 455
ICS OFF indicator ................. 457
LDA indicator ........................ 457
Low engine oil pressure ........ 455
Low fuel level ........................ 458
Malfunction indicator lamp .... 456
Master warning light.............. 458
Parking brake indicator ......... 456
PCS warning light ................. 457
Rear passengers’
seat belt reminder light ....... 458
Seat belt reminder light ......... 458
Slip indicator ......................... 458
SRS ...................................... 456
Tire pressure......................... 458
Warning messages .................. 465Washer ..................................... 226
Checking............................... 410
Preparing and checking
before winter ...................... 333
Switch ................................... 226
Washing and waxing ............... 386
Weight ...................................... 502
Cargo capacity...................... 193
Load limits ............................ 193
Vehicle capacity weight ........ 502
Wheels ...................................... 430
Replacing.............................. 430
Size....................................... 508
Window glasses ...................... 173
Window lock switch ................ 173
Windows................................... 173
Power windows..................... 173
Rear window defogger.......... 343
Washer ................................. 226
Windshield wipers ................... 226
Winter driving tips ................... 333
Wireless charger ..................... 366
Wireless remote control ......... 134
Battery-Saving Function ....... 150
Locking/Unlocking ........ 138, 145
Panic mode........................... 135
Replacing the battery............ 439