coolant temperature TOYOTA AVALON HYBRID 2020 Owners Manual (in English)

982. Instrument cluster
The units used on the meters may differ depending on the target region.
Hybrid System Indicator
Displays hybrid system output or regeneration level (P. 100)
Shift position (P. 2 0 5 )
Outside temperature
Displays the outside temperature within the range of -40°F (-40 °C) to
122°F (50°C). Low outside temperat ure indicator comes on when the
ambient temperature is 37°F (3°C) or lower.
Multi-information display
Presents the driver with a variety of vehicle data ( P. 1 0 2 )
Displays warning messages in case of a malfunction ( P. 463)
Speedometer
Fuel gauge
Odometer and trip meter P. 117)
Engine coolant temperature gauge
Displays the engine coolant temperature
Gauges and meters
1
2
3
4
5
6
7
8

1012. Instrument cluster
2
Instrument cluster
■Engine speed
On hybrid vehicles, engine speed is precisely controlled in ord er to help
improve fuel efficiency and reduce exhaust emissions etc.
There are times when the engine speed that is displayed may dif fer even
when vehicle operation and driving conditions are the same.
■ Outside temperature display
In the following situations, the correct outside temperature ma y not be dis-
played, or the display may take longer than normal to change:
● When stopped, or driving at low speeds (less than 16 mph [25 km/h])
● When the outside temperature has changed suddenly (at the entra nce/exit
of a garage, tunnel, etc.)
● When “ ” or “E” is displayed, the system may be malfunctioning.
Take your vehicle to your Toyota dealer.
NOTICE
■ To prevent damage to the engine and its components
The engine may be overheating if the engine coolant temperature gauge is
in the red zone (H). In this case, immediately stop the vehicle in a safe
place, and check the engine after it has cooled completely. ( P. 492)

4076-3. Do-it-yourself maintenance
6
Maintenance and care
Engine coolant reservoir
The coolant level is satisfactory if it is between the “F” and “L” lines on
the reservoir when the hybrid system is cold.
Reservoir cap
“F” line
“L” line
If the level is on or below the “L”
line, add coolant up to the “F” line.
(P. 492)
Power control unit coolant reservoir
The coolant level is satisfact ory if it is between the “FULL” a nd “LOW”
lines on the reservoir when the hybrid system is cold.
Reservoir cap
“FULL” line
“LOW” line
If the level is on or below the
“LOW” line, add coolant up to the
“FULL” line. ( P. 492)
■Coolant selection
Only use “Toyota Super Long Life Coolant” or a similar high quality ethylene
glycol based non-silicate, non-amine, non-nitrite, and non-bora te coolant with
long-life hybrid organic acid technology.
“Toyota Super Long Life Coolant” is a mixture of 50% coolant and 50% deion-
ized water. (Minimum temperature: -31 F [-35 C])
Coolant
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2
3
1
2
3

4527-2. Steps to take in an emergency
●Fluid leaks un der the vehicle.
(Water dripping from the air conditioning a fter use is normal.)
● Flat-looking tires or uneven tire wear
● Engine coolant temperature gauge needle continually points high er
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, stumb ling or running roughly
● Appreciable loss of power
● Vehicle pulls heavily to one side when braking
● Vehicle pulls heavily to one s ide when driving on a level road
● Loss of brake effectiveness, spongy feeling, pedal almost touch es
the floor
If you think something is wrong
If you notice any of the followi ng symptoms, your vehicle proba -
bly needs adjustment or repair. Contact your Toyota dealer as
soon as possible.
Visible symptoms
Audible symptoms
Operational symptoms

4537-2. 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 ligh ts
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 w arning buzzer list
Warning lightWarning light/Details/Actions
(Red)
Brake system warning li ght (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 li ght (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. 492)
Charging system warning light*1
Indicates a malfunction in the vehicle’s charging system
 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.

4927-2. 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 condition ing 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 c oolant temperature gauge (P. 98)
enters the red zone or a loss of hybrid system power is experi-
enced. (For example, the vehic le speed does not increase.)
● “Engine Coolant Temp High Stop in a Safe Place See Owner’s
Manual” or “Hybrid System Overheated Reduced Output Power”
is shown on the multi- information display
● Steam comes out from under the hood.
Correction procedures
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2
3
1
2

4957-2. 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 d oes 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.
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 ho od 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 wh ile 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 sa nd or dust
etc.).
● Do not use any coolant additives.
6

547Alphabetical index
EngineACCESSORY mode ............. 197
Compartment ........................ 403
Engine switch........................ 196
Hood ..................................... 401
How to start the hybrid system ......... ....................... 196
Identification number ............ 501
If your vehicle has to be stopped in an
emergency.......................... 447
Ignition switch (power switch) .................... 196
Overheating .......................... 492
Power switch......................... 196
Engine coolant
Capacity ................................ 504
Checking ............................... 407
Preparing and checking before winter....................... 333
Engine coolant temperature gauge........................................ 98
Engine oil Capacity ................................ 503
Checking ............................... 404
Preparing and checking before winter....................... 333
Engine switch .......................... 196
Enhanced VSC ......................... 323
Entune Audio Plus
*
Entune Premium Audio*
EPS
(Electric Power Steering) ..... 324 Warning light......................... 455
EV drive mode ......................... 202
Event data recorder (EDR) ........................................ 10
Exclusive jump starting
terminal .................................. 485
Flat tire ..................................... 469
Floor mats .................................. 24
Fluid Brake .................................... 505
Hybrid transmission .............. 505
Washer ................................. 410
Front interior light ................... 353
Front passenger occupant classification system .............. 48
Front passenger’s seat belt reminder light ........................ 456
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
F
*: Refer to the “NAVIGATION AND MULTIMEDIA SYSTEM OWNER’S MANUAL”.

552Alphabetical index
Navigation system*
Noise from under vehicle............ 6
Odometer.................................... 98
OilEngine oil .............................. 503
Opener Fuel filler door ....................... 233
Hood ..................................... 401
Trunk..................................... 144
Outside rear view mirrors ....... 170 Adjusting and folding ............ 170
Blind spot monitor (BSM) ...... 277
Linked mirror function when reversing ................... 171
Mirror position memory ......... 159
Outside rear view mirror defoggers ........................... 343
Outside temperature display ...................................... 98
Overheating, Hybrid
system .................................... 492 Paddle shift switches .............. 208
Panic mode .............................. 135
Panoramic view monitor*
Parking brake........................... 212
Parking brake engaged warning buzzer/
message............................. 215
Warning light......................... 454
Parking lights........................... 218 Light switch ........................... 218
Replacing light bulbs ............ 444
PCS (Pre-Collision System) .................................. 242
Warning light......................... 455
Personal lights......................... 353
Power control unit ..................... 79
Power control unit coolant ..... 407 Capacity................................ 504
Checking............................... 407
Preparing and checking before winter ...................... 333
Power outlet ............................. 363
Power steering
(Electric power steering
system) .................................. 324 Warning light......................... 455
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......................... 455
N
O
P

559Alphabetical index
Warning lights............................ 93ABS....................................... 454
Brake hold operated indicator .............................. 455
Brake Override System......... 454
Brake system ....... ................. 453
Charging system ................... 453
Drive-Start Control ................ 454
Driver’s seat belt reminder ............................. 456
Electric power steering ......... 455
Front passenger’s seat belt reminder............... 456
High coolant temperature ..... 453
ICS OFF indicator ................. 455
LDA indicator ........................ 455
Low engine oil pressure ........ 453
Low fuel level ........................ 456
Malfunction indicator lamp .... 454
Master warning light.............. 456
Parking brake indicator ......... 454
PCS warning light ................. 455
Rear passengers’ seat belt reminder light ....... 456
Seat belt reminder light ......... 456
Slip indicator ......................... 456
SRS ...................................... 454
Tire pressure......................... 456
Warning messages .................. 463 Washer ..................................... 226
Checking............................... 410
Preparing and checking before winter ...................... 333
Switch ................................... 226
Washing and waxing ............... 386
Weight ...................................... 500 Cargo capacity...................... 193
Load limits ............................ 193
Vehicle capacity weight ........ 500
Wheels ...................................... 430 Replacing.............................. 430
Size....................................... 506
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