coolant temperature TOYOTA AVALON 2021 Owners Manual (in English)

902. Instrument cluster
The units used on the meters may differ depending on the target region.
Tachometer
Displays the engine speed in revolutions per minute
Shift position (P. 1 8 9 )
Outside temperature
Displays the outside temperature within the range of -40°F (-40°C) to
122°F (50°C). Low outside temperature indicator comes on when the
ambient temperature is 37°F (3°C) or lower.
Multi-information display
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03000b[P. 93)
Displays warning messages in case of a malfunction (P. 444)
Speedometer
Fuel gauge
Odometer and trip meter P. 1 0 6 )
Engine coolant temperature gauge
Displays the engine coolant temperature
Gauges and meters
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3
4
5
6
7
8

922. Instrument cluster
■The meters and display illuminate when
The engine switch is in IGNITION ON mode.
■Brightness of the meters (day mode and night mode)
●The brightness of the meters is changed between day mode and night
mode.
• Day mode: When the tail lights are off or when the tail lights are on but
the surrounding area is bright
• Night mode: When the tail lights are on and the surrounding area is dark
●When in night mode, the brightness will be reduced slightly unless the
meters are set to the maximum brightness level.
■Outside temperature display
In the following situations, the correct outside temperature may not be dis-
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030057005200030046004b00440051004a0048001d0003[
●When stopped, or driving at low speeds (less than 16 mph [25 km/h])
●When the outside temperature has changed suddenly (at the entrance/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
●Do not let the indicator needle of the tachometer enter the red zone, which
indicates the maximum engine speed.
●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. 4 7 1 )

3806-3. Do-it-yourself maintenance
WARNING
The engine compartment contains many mechanisms and fluids that may
move suddenly, become hot, or become electrically energized. To avoid death
or serious injury, observe the following precautions.
■When working on the engine compartment
●Keep hands, clothing and tools away from the moving fan and engine
drive belt.
●Be careful not to touch the engine, radiator, exhaust manifold, etc. right
after driving as they may be hot. Oil and other fluids may also be hot.
●Do not leave anything that may burn easily, such as paper and rags, in the
engine compartment.
●Do not smoke, cause sparks or expose an open flame to fuel or the bat-
tery. Fuel and battery fumes are flammable.
●Be extremely cautious when working on the battery. It contains poisonous
and corrosive sulfuric acid.
■When working near the electric cooling fan or radiator grille
Be sure the engine switch is off. With the engine switch in IGNITION ON
mode, the electric cooling fan may automatically start to run if the air condi-
tioning is on and/or the coolant temperature is high. (P. 389)
■Safety glasses
Wear safety glasses to prevent flying or falling material, fluid spray, etc.
from getting in your eyes.
NOTICE
■If you remove the air cleaner filter
Driving with the air cleaner filter removed may cause excessive engine wear
due to dirt in the air.

3886-3. Do-it-yourself maintenance
The coolant level is satisfactory if it is between the “F” and “L” lines on
the reservoir when the engine 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. 471)
■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-borate coolant with
long-life hybrid organic acid technology.
U.S.A.:
“Toyota Super Long Life Coolant” is a mixture of 50% coolant and 50% deion-
ized water. (Minimum temperature: -31F [-35C])
Canada:
“Toyota Super Long Life Coolant” is a mixture of 55% coolant and 45% deion-
ized water. (Minimum temperature: -44F [-42C])
For more details about engine coolant, contact your Toyota dealer.
■If the coolant level drops within a short time of replenishing
Visually check the radiator, hoses, engine coolant reservoir caps, drain cock
and water pump.
If you cannot find a leak, have your Toyota dealer test the cap and check for
leaks in the cooling system.
Engine coolant
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3

4327-2. 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 engine
●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

4347-2. Steps to take in an emergency
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
(U.S.A.)
(Red)
(Canada)
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 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. 471)
Charging system warning light*1
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56005c0056005700480050[
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.

4717-2. Steps to take in an emergency
7
When trouble arises
Stop the vehicle in a safe place and turn off the air conditioning sys-
tem, and then stop the engine.
If you see steam:
Carefully lift the hood after the steam subsides.
If you do not see steam:
Carefully lift the hood.
After the engine has cooled
down sufficiently, inspect the
hoses and radiator core (radia-
tor) 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. 90)
enters the red zone or a loss of engine power is experienced. (For
example, the vehicle speed does not increase.)
●“Engine Coolant Temp High Stop in a Safe Place See Owner’s
Manual” is shown on the multi-information display.
●Steam comes out from under the hood.
Correction procedures
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3
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2

4737-2. Steps to take in an emergency
7
When trouble arises
Start the engine and turn the air conditioning system on to check
that the radiator cooling fan operates and to check for coolant leaks
from the 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 conditioning
system on and off repeatedly. (The fan may not operate in freezing tem-
peratures.)
If the fan is not operating:
Stop the engine immediately and contact your Toyota dealer.
If the fan is operating:
Have the vehicle inspected at the nearest Toyota 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.
●Keep hands and clothing (especially a tie, a scarf or a muffler) away from
the fan and belts. Failure to do so may cause the hands or clothing to be
caught, resulting in serious injury.
●Do not loosen the radiator cap and the coolant reservoir cap while the
engine and radiator are hot.
High temperature steam or coolant could spray out.
NOTICE
■When adding engine coolant
Wait until the engine has cooled down before adding engine coolant.
When adding coolant, do so slowly. Adding cool coolant to a hot engine too
quickly can cause damage to the engine.
■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.
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7

537Alphabetical index
Engine coolant
Capacity ................................ 483
Checking ............................... 388
Preparing and checking
before winter....................... 317
Engine coolant temperature
gauge........................................ 90
Engine immobilizer system ...... 77
Engine oil
Capacity ................................ 481
Checking ............................... 385
Preparing and checking
before winter....................... 317
Engine switch .......................... 184
Enhanced VSC ......................... 309
EPS
(Electric Power Steering)...... 310
Warning light ......................... 436
Event data recorder
(EDR) ........................................ 11Flat tire ..................................... 449
Floor mats .................................. 26
Fluid
Automatic transaxle .............. 484
Brake .................................... 486
Washer ................................. 393
Front interior light ................... 333
Front passenger occupant
classification system .............. 50
Front passenger’s seat belt
reminder light ........................ 438
Front personal lights............... 333
Front seat heaters ................... 329
Front seats ............................... 142
Adjustment............................ 142
Cleaning ............................... 369
Correct driving posture ........... 28
Driving position memory ....... 146
Head restraints ..................... 151
Power easy access
system ................................ 146
Seat heaters ......................... 329
Seat ventilators ..................... 329
Front side marker lights
Light switch ........................... 202
Replacing light bulbs ............ 421F

546Alphabetical index
Vanity lights ............................. 342
Wattage ................................ 488
Vanity mirrors .......................... 342
Vanity lights .......................... 342
Vehicle data recording ................ 9
Vehicle identification
number ................................... 479
Vehicle Stability Control
(VSC) ...................................... 309
VSC
(Vehicle Stability Control) .... 309
Warning buzzers
Approach warning ................. 255
Brake system ........................ 434
Downshifting ......................... 192
Electric power steering
system ................................ 436
Intuitive parking assist .......... 279
Lane departure alert
function ............................... 238
Light reminder ....................... 205
Open door ............................. 129
Open hood ............................ 381
Open moon roof .................... 166
Open trunk ............................ 132
Parking brake........................ 436
Pre-collision warning............. 226
Seat belt reminder ................ 438
Vehicle sway warning ........... 239Warning lights ........................... 85
ABS ...................................... 435
Brake hold operated
indicator.............................. 436
Brake Override System ........ 435
Brake system ........................ 434
Charging system................... 434
Drive-Start Control ................ 435
Driver’s seat belt
reminder ............................. 438
Electric power steering ......... 436
Front passenger’s seat
belt reminder ...................... 438
High coolant temperature ..... 434
ICS OFF indicator ................. 437
LDA indicator ........................ 436
Low engine oil pressure........ 434
Low fuel level ........................ 437
Malfunction indicator lamp .... 435
Master warning light ............. 438
Parking brake indicator ......... 436
PCS warning light ................. 437
Rear passengers’ seat belt
reminder light ..................... 438
Seat belt reminder light......... 438
Slip indicator ......................... 437
SRS ...................................... 435
Tire pressure ........................ 438
Warning messages.................. 444
Washer ..................................... 210
Checking............................... 393
Preparing and checking
before winter ...................... 317
Switch ................................... 210
V
W