engine overheat TOYOTA AVALON 2021 Owners Manual (in English)

5
1
8 7 5 4
3
2
9
6
6-1. Maintenance and care
Cleaning and protecting
the vehicle exterior .......... 366
Cleaning and protecting
the vehicle interior ........... 369
6-2. Maintenance
Maintenance
requirements ................... 372
General maintenance ........ 374
Emission inspection and
maintenance (I/M)
programs ......................... 378
6-3. Do-it-yourself
maintenance
Do-it-yourself service
precautions ..................... 379
Hood.................................. 381
Positioning a floor jack ...... 382
Engine compartment ......... 383
Tires .................................. 394
Tire inflation pressure........ 408
Wheels .............................. 411
Air conditioning filter .......... 413
Electronic key battery ........ 415
Checking and replacing
fuses ............................... 418
Light bulbs ......................... 4217-1. Essential information
Emergency flashers ........... 424
If your vehicle has to be
stopped in an
emergency....................... 425
If the vehicle is trapped
in rising water .................. 426
7-2. Steps to take in
an emergency
If your vehicle needs to
be towed .......................... 427
If you think something
is wrong ........................... 432
Fuel pump shut off
system ............................. 433
If a warning light turns on
or a warning buzzer
sounds ............................. 434
If a warning message is
displayed ......................... 444
If you have a flat tire .......... 449
If the engine will
not start ........................... 461
If the electronic key does
not operate properly ........ 463
If the vehicle battery is
discharged ....................... 466
If your vehicle overheats.... 471
If the vehicle becomes
stuck ................................ 474
6Maintenance and care7When trouble arises

17Pictorial index
Windshield wipers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 210
Precautions for winter season . . . . . . . . . . . . . . . . . . . . . . . . . P. 317
Fuel filler door . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 214
Refueling method . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 214
Fuel type/fuel tank capacity . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 480
Tires . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 394
Tire size/inflation pressure . . . . . . . . . . . . . . . . . . . . . . . . . P. 486
Winter tires/tire chains . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 317
Checking/rotation/tire pressure warning system . . . . . . . . .P. 394
Coping with flat tires . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 449
Hood . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 381
Opening . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 381
Engine oil . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 481
Coping with overheat . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 471
Front turn signal lights/parking lights . . . . . . . . . . . . . P. 195, 202
Headlights/daytime running lights . . . . . . . . . . . . . . . . . . . . P. 202
Front side marker lights . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 202
Headlights . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 202
Front turn signal lights . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 195
Daytime running lights/parking lights . . . . . . . . . . . . . . . . . P. 202
Front turn signal lights/cornering lights . . . . . . . . . . . P. 195, 202
Side turn signal lights . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 195
Rear turn signal lights/rear side marker lights/
tail lights/stoplights . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 195, 202
Back-up lights
Shifting the shift lever to R . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 189
License plate lights . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 202
4
5
6
7
Light bulbs of the exterior lights for driving
(Replacing method: P. 421, Watts: P. 488)
*: If equipped
8
9
10
11
12
13
14
15
16
17

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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●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 )

1734-1. Before driving
4
Driving
WARNING
Observe the following precautions.
Failure to do so may result in death or serious injury.
■When starting the vehicle
Always keep your foot on the brake pedal while stopped with the engine
running. This prevents the vehicle from creeping.
■When driving the vehicle
●Do not drive if you are unfamiliar with the location of the brake and accel-
erator pedals to avoid depressing the wrong pedal.
• Accidentally depressing the accelerator pedal instead of the brake
pedal will result in sudden acceleration that may lead to an accident.
• When backing up, you may twist your body around, leading to a diffi-
culty in operating the pedals. Make sure to operate the pedals properly.
• Make sure to keep a correct driving posture even when moving the
vehicle only slightly. This allows you to depress the brake and accelera-
tor pedals properly.
• Depress the brake pedal using your right foot. Depressing the brake
pedal using your left foot may delay response in an emergency, result-
ing in an accident.
●Do not drive the vehicle over or stop the vehicle near flammable materials.
The exhaust system and exhaust gases can be extremely hot. These hot
parts may cause a fire if there is any flammable material nearby.
●During normal driving, do not turn off the engine. Turning the engine off
while driving will not cause loss of steering or braking control, but the
power assist to these systems will be lost. This will make it more difficult to
steer and brake, so you should pull over and stop the vehicle as soon as it
is safe to do so.
However, in the event of an emergency, such as if it becomes impossible
to stop the vehicle in the normal way: P. 425
●Use engine braking (downshift) to maintain a safe speed when driving
down a steep hill.
Using the brakes continuously may cause the brakes to overheat and lose
effectiveness. (P. 190)
●Do not adjust the display, the positions of the steering wheel, the seat, or
the inside or outside rear view mirrors while driving.
Doing so may result in a loss of vehicle control.
●Always check that all passengers’ arms, heads or other parts of their body
are not outside the vehicle.
●AWD models: Do not drive the vehicle off-road.
This is not an AWD vehicle designed for off-road driving. Proceed with all
due caution if it becomes unavoidable to drive off-road.

1754-1. Before driving
4
Driving
WARNING
Observe the following precautions.
Failure to do so may result in death or serious injury.
■If you hear a squealing or scraping noise (brake pad wear limit indica-
tors)
Have the brake pads checked and replaced by your Toyota dealer as soon
as possible.
Rotor damage may result if the pads are not replaced when needed.
It is dangerous to drive the vehicle when the wear limits of the brake pads
and/or those of the brake discs are exceeded.
■When the vehicle is stopped
●Do not race the engine.
If the shift lever is any position other than P or N, the vehicle may acceler-
ate suddenly and unexpectedly, causing an accident.
●In order to prevent accidents due to the vehicle rolling away, always keep
depressing the brake pedal while the engine is running, and apply the
parking brake as necessary.
●If the vehicle is stopped on an incline, in order to prevent accidents caused
by the vehicle rolling forward or backward, always depress the brake pedal
and securely apply the parking brake as needed.
●Avoid revving or racing the engine.
Running the engine at high speed while the vehicle is stopped may cause
the exhaust system to overheat, which could result in a fire if combustible
material is nearby.
■When the vehicle is parked
●Do not leave glasses, cigarette lighters, spray cans, or soft drink cans in
the vehicle when it is in the sun.
Doing so may result in the following:
• Gas may leak from a cigarette lighter or spray can, and may lead to a
fire.
• The temperature inside the vehicle may cause the plastic lenses and
plastic material of glasses to deform or crack.
• Soft drink cans may fracture, causing the contents to spray over the
interior of the vehicle, and may also cause a short circuit in the vehicle’s
electrical components.
●Do not leave cigarette lighters in the vehicle. If a cigarette lighter is in a
place such as the glove box or on the floor, it may be lit accidentally when
luggage is loaded or the seat is adjusted, causing a fire.
●Do not attach adhesive discs to the windshield or windows. Do not place
containers such as air fresheners on the instrument panel or dashboard.
Adhesive discs or containers may act as lenses, causing a fire in the vehi-
cle.

1764-1. Before driving
WARNING
Observe the following precautions.
Failure to do so may result in death or serious injury.
●Do not leave a door or window open if the curved glass is coated with a
metallized film such as a silver-colored one. Reflected sunlight may cause
the glass to act as a lens, causing a fire.
■When the vehicle is parked
●Always apply the parking brake, shift the shift lever to P, stop the engine
and lock the vehicle.
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If the vehicle is parked with the shift lever in P but the parking brake is not
set, the vehicle may start to move, possibly leading to an accident.
●Do not touch the exhaust pipes while the engine is running or immediately
after turning the engine off.
Doing so may cause burns.
■When taking a nap in the vehicle
Always turn the engine off. Otherwise, if you accidentally move the shift
lever or depress the accelerator pedal, this could cause an accident or fire
due to engine overheating. Additionally, if the vehicle is parked in a poorly
ventilated area, exhaust gases may collect and enter the vehicle, leading to
death or a serious health hazard.
■When braking
●When the brakes are wet, drive more cautiously.
Braking distance increases when the brakes are wet, and this may cause
one side of the vehicle to brake differently than the other side. Also, the
parking brake may not securely hold the vehicle.
●If the brake booster device does not operate, do not follow other vehicles
closely and avoid hills or sharp turns that require braking.
In this case, braking is still possible, but the brake pedal should be
depressed more firmly than usual. Also, the braking distance will increase.
Have your brakes fixed immediately.
●Do not pump the brake pedal if the engine stalls.
Each push on the brake pedal uses up the reserve for the power-assisted
brakes.
●The brake system consists of 2 individual hydraulic systems; if one of the
systems fails, the other will still operate. In this case, the brake pedal
should be depressed more firmly than usual and the braking distance will
increase.
Have your brakes fixed immediately.
■If the vehicle becomes stuck (AWD models)
Do not spin the wheels excessively when any of the tires is up in the air, or
the vehicle is stuck in sand, mud, etc. This may damage the driveline com-
ponents or propel the vehicle forward or backward, causing an accident.

1874-2. Driving procedures
4
Driving
■Steering lock motor overheating prevention
To prevent the steering lock motor from overheating, the motor may be sus-
pended if the engine is turned on and off repeatedly in a short period of time.
In this case, refrain from operating the engine. After about 10 seconds, the
steering lock motor will resume functioning.
■When a message requesting the smart key system be inspected is dis-
played on the multi-information display
The system may be malfunctioning. Have the vehicle inspected by your
Toyota dealer immediately.
■If the electronic key battery is depleted
P. 415
■Operation of the engine switch
●If the switch is not pressed shortly and firmly, the engine switch mode may
not change or the engine may not start.
●If attempting to restart the engine immediately after turning the engine
switch off, the engine may not start in some cases. After turning the engine
switch off, wait a few seconds before restarting the engine.
■If the smart key system has been deactivated in a customized setting
P. 463
WARNING
■When starting the engine
Always start the engine while sitting in the driver’s seat. Do not depress the
accelerator pedal while starting the engine under any circumstances.
Doing so may cause an accident resulting in death or serious injury.
■Caution while driving
If engine failure occurs while the vehicle is moving, do not lock or open the
doors until the vehicle reaches a safe and complete stop. Activation of the
steering lock in this circumstance may lead to an accident, resulting in
death or serious injury.
■Stopping the engine in an emergency
●If you want to stop the engine in an emergency while driving the vehicle,
press and hold the engine switch for more than 2 seconds, or press it
briefly 3 times or more in succession. (P. 425)
However, do not touch the engine switch while driving except in an emer-
gency. Turning the engine off while driving will not cause loss of steering
or braking control, but the power assist to these systems will be lost. This
will make it more difficult to steer and brake, so you should pull over and
stop the vehicle as soon as it is safe to do so.
●If the engine switch is operated while the vehicle is running, a warning
message will be shown on the multi-information display and a buzzer
sounds.
●When restarting the engine after it was turned off while driving, shift the
shift lever to N and press the engine switch.

1984-2. Driving procedures
■Parking the vehicle
P. 170
■Parking brake operation
●When the engine switch is not in IGNITION ON mode, the parking brake
cannot be released using the parking brake switch.
●When the engine switch is not in IGNITION ON mode, automatic mode
(automatic brake setting and releasing) is not available.
■Automatic release function
The parking brake is automatically released when slowly depress the acceler-
ator pedal.
The parking brake will be released automatically under the following condi-
tions:
●The driver’s door is closed.
●The driver’s seat belt is fastened.
●Shift the shift lever is in a forward or reverse position.
●The malfunction indicator lamp or brake system warning light is not illumi-
nated.
If the automatic release function does not operate, manually release the park-
ing brake.
■If “Parking Brake Temporarily Unavailable” is displayed on the multi-
information display
If the parking brake is operated repeatedly over a short period of time, the
system may restrict operation to prevent overheating. If this happens, refrain
from operating the parking brake. Normal operation will return after about 1
minute.
■If “Parking Brake Unavailable” is displayed on the multi-information dis-
play
Operate the parking brake switch. If the message does not disappear after
operating the switch several times, the system may be malfunctioning. Have
the vehicle inspected by your Toyota dealer immediately.
■Parking brake operation sound
When the parking brake operates, a motor sound (whirring sound) may be
heard. This does not indicate a malfunction.
■Parking brake indicator light and parking brake light
●Depending on the engine switch mode, the parking brake indicator light and
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Not in IGNITION ON mode: Stays on for approximately 15 seconds.
●When the engine switch is turned off with the parking brake set, the parking
brake indicator light and parking brake light will stay on for about 15 sec-
onds. This does not indicate a malfunction.

3144-5. Using the driving support systems
■Secondary Collision Brake automatic cancellation
The system is automatically canceled in any of the following situations.
●The vehicle speed drops below approximately 6 mph (10 km/h)
●A certain amount of time elapses during operation
●The accelerator pedal is depressed a large amount
■Reduced effectiveness of the EPS system
The effectiveness of the EPS system is reduced to prevent the system from
overheating when there is frequent steering input over an extended period of
time. The steering wheel may feel heavy as a result.
Should this occur, refrain from excessive steering input or stop the vehicle
and turn the engine off. The EPS system should return to normal within 10
minutes.
■If a message about AWD is shown on the multi-information display
Perform the following actions.
MessageDetails/Actions
“AWD System Overheated
Switching to 2WD Mode”
AWD system is overheating.
Perform the following actions.
• Reduce the vehicle speed until the mes-
sage disappears.
• Stop the vehicle in a safe place and let
the engine idle.
Once the display message on the multi-
information display turns off, there is no
problem continuing to drive.
If the message does not disappear, have
your vehicle checked by your Toyota dealer
immediately.
“AWD System Overheated
2WD Mode Engaged”
The vehicle switched from all-wheel drive
(AWD) to front wheel drive due to overheat-
ing.
Perform the following actions.
• Reduce the vehicle speed until the mes-
sage disappears.
• Stop the vehicle in a safe place and let
the engine idle.
Once the display message on the multi-
information display turns off, the AWD sys-
tem returns to normal.
If the message does not disappear, have
your vehicle checked by your Toyota dealer
immediately.
“AWD System Malfunction
2WD Mode Engaged
Visit Your Dealer”A malfunction occurred in the AWD system.
Have your vehicle checked by your
Toyota dealer immediately.

423
7When trouble arises
7-1. Essential information
Emergency flashers .......... 424
If your vehicle has to be
stopped in an
emergency ...................... 425
If the vehicle is trapped in
rising water ..................... 426
7-2. Steps to take in
an emergency
If your vehicle needs to
be towed ......................... 427
If you think something
is wrong .......................... 432
Fuel pump shut
off system ....................... 433
If a warning light turns
on or a warning buzzer
sounds ............................ 434
If a warning message
is displayed ..................... 444
If you have a flat tire.......... 449
If the engine will
not start ........................... 461
If the electronic key does
not operate properly........ 463
If the vehicle battery is
discharged ...................... 466
If your vehicle
overheats ........................ 471
If the vehicle becomes
stuck ............................... 474