check engine light TOYOTA AVALON 2021 Owners Manual (in English)

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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
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Light bulbs of the exterior lights for driving
(Replacing method: P. 421, Watts: P. 488)
*: If equipped
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701-1. For safe use
Exhaust gas precautions
Harmful substance to the human body is included in exhaust
gases if inhaled.
WARNING
Exhaust gases include harmful carbon monoxide (CO), which is colorless and
odorless. Observe the following precautions.
Failure to do so may cause exhaust gases enter the vehicle and may lead to
an accident caused by light-headedness, or may lead to death or a serious
health hazard.
■Important points while driving
●Keep the trunk lid closed.
●If you smell exhaust gases in the vehicle even when the trunk lid is closed,
open the windows and have the vehicle inspected at your Toyota dealer as
soon as possible.
■When parking
●If the vehicle is in a poorly ventilated area or a closed area, such as a
garage, stop the engine.
●Do not leave the vehicle with the engine on for a long time.
If such a situation cannot be avoided, park the vehicle in an open space
and ensure that exhaust fumes do not enter the vehicle interior.
●Do not leave the engine running in an area with snow build-up, or where it
is snowing. If snowbanks build up around the vehicle while the engine is
running, exhaust gases may collect and enter the vehicle.
■Exhaust pipe
The exhaust system needs to be checked periodically. If there is a hole or
crack caused by corrosion, damage to a joint or abnormal exhaust noise, be
sure to have the vehicle inspected and repaired by your Toyota dealer.

862. Instrument cluster
*1: These lights turn on when the engine switch is turned to IGNITION ON
mode to indicate that a system check is being performed. They will turn off
after the engine is started, or after a few seconds. There may be a mal-
function in a system if a light does not come on, or turn off. Have the vehi-
cle inspected by your Toyota dealer.
*2: This light illuminates on the multi-information display.
*3: This light flashes to indicate a malfunction.
*4: This light flashes or illuminates to indicate a malfunction.
*5: This light illuminates on the center panel.
*2
(Amber)
LDA indicator (P. 436)
*5Rear passengers’ seat
belt reminder lights
(P. 438)
*1
Slip indicator (P. 437)*1Master warning light
(P. 438)
Low fuel level warning
light (P. 437)*1Tire pressure warning
light (P. 438)
Driver’s and front
passenger’s seat belt
reminder light (P. 438)

892. Instrument cluster
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Instrument cluster
*1: These lights turn on when the engine switch is turned to IGNITION ON
mode to indicate that a system check is being performed. They will turn off
after the engine is started, or after a few seconds. There may be a mal-
function in a system if a light does not come on, or turn off. Have the vehi-
cle inspected by your Toyota dealer.
*2: This light illuminates on the multi-information display.
*3: This light does not turn on when the system is disabled.
*4: This light turns on when the system is off.
*5: This light flashes to indicate that the system is operating.
*6: These indicators will illuminate in the following situations to indicate that
the system initial check is being performed:
• When the BSM function or RCTA function is enabled and the engine
switch is turned to IGNITION ON mode.
• When the engine switch is in IGNITION ON mode and the BSM function
is enabled.
• When the engine switch is in IGNITION ON mode and the RCTA func-
tion is enabled. (At this time, a buzzer will also sound.)
The indicators will turn off after a few seconds. If the indicators do not
illuminate or turn off, or if a buzzer does not sound when the RCTA func-
tion is enabled, the system may be malfunctioning. Have the vehicle
inspected by your Toyota dealer.
*7: This light illuminates on the outside rear view mirrors.
*8: This light illuminates on the center panel.
*9: When the outside temperature is approximately 37°F (3°C) or lower, this
indicator will flash for approximately 10 seconds, then stay on.
WARNING
■If a safety system warning light does not come on
Should a safety system light such as the ABS and SRS warning lights not
come on when you start the engine, this could mean that these systems are
not available to help protect you in an accident, which could result in death
or serious injury. Have the vehicle inspected by your Toyota dealer immedi-
ately if this occurs.

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 )

1393-2. Opening, closing and locking the doors
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Operation of each component
●The lock sensor may not work properly if it comes into contact with ice,
snow, mud, etc. Clean the lock sensor and attempt to operate it again.
●A sudden approach to the effective range or door handle may prevent the
doors from being unlocked. In this case, return the door handle to the origi-
nal position and check that the doors unlock before pulling the door handle
again.
●If there is another electronic key in the detection area, it may take slightly
longer to unlock the doors after the door handle is gripped.
●Fingernails may scrape against the door during operation of the door han-
dle. Be careful not to injure fingernails or damage the surface of the door.
*: This setting can be customized at your Toyota dealer.
■When the vehicle is not driven for extended periods
●To prevent theft of the vehicle, do not leave the electronic key within 6 ft. (2
m) of the vehicle.
●The smart key system can be deactivated in advance. (P. 505)
●Setting the electronic key to battery-saving mode helps to reduce key bat-
tery depletion. (P. 137)
■To operate the system properly
Make sure to carry the electronic key when operating the system. Do not get
the electronic key too close to the vehicle when operating the system from the
outside of the vehicle.
Depending on the position and holding condition of the electronic key, the key
may not be detected correctly and the system may not operate properly. (The
alarm may go off accidentally, or the door lock prevention function may not
operate.)
■If the smart key system does not operate properly
●Locking and unlocking the doors and opening the trunk: Use the mechanical
key. (P. 463)
●Starting the engine: P. 464
■Customization
Some functions can be customized. (P. 505)
■If the smart key system has been deactivated in a customized setting
●Locking and unlocking the doors and opening the trunk:
Use the wireless remote control or mechanical key. (P. 125, 131, 463)
●Starting the engine and changing engine switch modes: P. 464
●Stopping the engine: P. 184

1663-5. Opening and closing the windows
■When the moon roof does not close normally
Perform the following procedure:
●If the moon roof closes but then re-opens slightly
Stop the vehicle.
Press and hold the “CLOSE” switch.
*1
The moon roof will close, reopen and pause for approximately 10 sec-
onds.
*2 Then it will close again, tilt up and pause for approximately 1 sec-
ond. Finally, it will tilt down, open and close.
Check to make sure that the moon roof is completely closed and then
release the switch.
●If the moon roof tilts down but then tilts back up
Stop the vehicle.
Press and hold the “UP” switch
*1 until the moon roof moves into the tilt
up position and stops.
Release the “UP” switch once and then press and hold the “UP” switch
again.
*1
The moon roof will pause for approximately 10 seconds in the tilt up posi-
tion.
*2 Then it will adjust slightly and pause for approximately 1 second.
Finally, it will tilt down, open and close.
Check to make sure that the moon roof is completely closed and then
release the switch.
*1: If the switch is released at the incorrect time, the procedure will have to
be performed again from the beginning.
*2: If the switch is released after the above mentioned 10 second pause,
automatic operation will be disabled. In that case, press and hold the
“CLOSE” or “UP” switch, and the moon roof will tilt up and pause for
approximately 1 second. Then it will tilt down, open and close. Check to
make sure that the moon roof is completely closed and then release the
switch.
If the moon roof does not fully close even after performing the above proce-
dure correctly, have the vehicle inspected by your Toyota dealer.
■Alarm
The alarm may be triggered if the alarm is set and the moon roof is closed
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■Moon roof open warning buzzer
A buzzer sounds and a message is shown on the multi-information display in
the instrument cluster when the engine switch is turned off and the driver's
door is opened with the moon roof open.
■Customization
Some functions can be customized. (P. 505)
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1734-1. Before driving
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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.