check engine 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

8
Please note that this manual applies to all models and explains all equipment,
including options. Therefore, you may find some explanations for equipment
not installed on your vehicle.
All specifications provided in this manual are current at the time of printing.
However, because of the Toyota policy of continual product improvement, we
reserve the right to make changes at any time without notice.
Depending on specifications, the vehicle shown in the illustrations may differ
from your vehicle in terms of equipment.
Approximately five hours after the engine is turned off, you may hear sound
coming from under the vehicle for several minutes. This is the sound of a fuel
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4800030044000300500044004f00490058005100460057004c[on.
A wide variety of non-genuine spare parts and accessories for Toyota vehi-
cles are currently available in the market. You should know that Toyota does
not warrant these products and is not responsible for their performance,
repair, or replacement, or for any damage they may cause to, or adverse
effect they may have on, your Toyota vehicle.
This vehicle should not be modified with non-genuine Toyota products. Modi-
fication with non-genuine Toyota products could affect its performance, safety
or durability, and may even violate governmental regulations. In addition,
damage or performance problems resulting from the modification may not be
covered under warranty.
The installation of a mobile two-way radio system in your vehicle could affect
electronic systems such as:
●Multiport fuel injection system/sequential multiport fuel injection system
●Toyota Safety Sense P
●Anti-lock brake system
●SRS airbag system
●Seat belt pretensioner system
Be sure to check with your Toyota dealer for precautionary measures or spe-
cial instructions regarding installation of a mobile two-way radio system.
For your infor mation
Main Owner’s Manual
Noise from under vehicle after turning off the engine
Accessories, spare parts and modification of your Toyota
Installation of a mobile two-way radio system

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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5
6
7
Light bulbs of the exterior lights for driving
(Replacing method: P. 421, Watts: P. 488)
*: If equipped
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271-1. For safe use
1
For safety and security
WARNING
Observe the following precautions.
Failure to do so may cause the driver’s floor mat to slip, possibly interfering
with the pedals while driving. An unexpectedly high speed may result or it may
become difficult to stop the vehicle. This could lead to an accident, resulting in
death or serious injury.
■When installing the driver’s floor mat
●Do not use floor mats designed for other models or different model year
vehicles, even if they are Toyota Genuine floor mats.
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11[
●Always install the floor mat securely using the retaining hooks (clips) pro-
vided.
●Do not use two or more floor mats on top of each other.
●Do not place the floor mat bottom-side up or upside-down.
■Before driving
●Check that the floor mat is securely
fixed in the correct place with all the
provided retaining hooks (clips). Be
especially careful to perform this check
after cleaning the floor.
●With the engine stopped and the shift
lever in P, fully depress each pedal to
the floor to make sure it does not inter-
fere with the floor mat.

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
2
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 )

1142. Instrument cluster
■Head-up display
The head-up display may seem dark or hard to see when viewed through
sunglasses, especially polarized sunglasses.
Adjust the brightness of the head-up display or remove your sunglasses.
■Display brightness
The brightness of the head-up display can be adjusted on of the multi-
information display. Also, it is automatically adjusted according to the ambient
brightness.
■Enabling/disabling of the head-up display
If the head-up display is disabled, it will remain disabled when the engine
switch is turned off then back to IGNITION ON mode.
■Street name display
Only street names which are included in the map data will be displayed.
WARNING
■Before using the head-up display
●Check that the position and brightness of the head-up display image does
not interfere with safe driving. Incorrect adjustment of the image’s position
or brightness may obstruct the driver’s view and lead to an accident,
resulting in death or serious injury.
●Do not continuously look at the head-up display while driving as you may
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■Caution for changing settings of the head-up display
As the engine needs to be running while changing the settings of the head-
up display, ensure that the vehicle is parked in a place with adequate venti-
lation. In a closed area such as a garage, exhaust gases including harmful
carbon monoxide (CO) may collect and enter the vehicle. This may lead to
death or a serious health hazard.

1393-2. Opening, closing and locking the doors
3
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