2021 TOYOTA AVALON HYBRID battery

831-3. Hybrid system
1
For safety and security
WARNING
■Road accident cautions
Observe the following precautions to reduce the risk of death or serious
injury:
●Pull your vehicle off the road, apply the parking brake, shift the shift lever
to P, and turn the hybrid system off.
●Do not touch the high voltage parts, cables and connectors.
●If electric wires are exposed inside or outside your vehicle, an electric
shock may occur. Never touch exposed electric wires.
●If a fire occurs in the hybrid vehicle, leave the vehicle as soon as possible.
Never use a fire extinguisher that is not meant for electric fires. Using even
a small amount of water may be dangerous.
●If your vehicle needs to be towed, do so with front wheels raised. If the
wheels connected to the electric motor (traction motor) are on the ground
when towing, the motor may continue to generate electricity. This may
cause a fire. (P. 451)
●Carefully inspect the ground under the vehicle. If you find that liquid has
leaked onto the ground, the fuel system may have been damaged. Leave
the vehicle as soon as possible.
●If electrolyte is leaking from the hybrid battery (traction battery), do not
approach the vehicle.
Even in the unlikely event that the hybrid battery (traction battery) is dam-
aged, the internal construction of the battery will prevent a large amount
of electrolyte from leaking out. However, any electrolyte that does leak out
will give off a vapor. This vapor is an irritant to skin and eyes and could
cause acute poisoning if inhaled.
●Do not touch the hybrid battery (traction battery) if liquid is leaking from or
adhering to it. If electrolyte (carbonic-based organic electrolyte) from the
hybrid battery (traction battery) comes into contact with the eyes or skin, it
could cause blindness or skin wounds. In the unlikely event that it comes
into contact with the eyes or skin, wash it off immediately with a large
amount of water, and seek immediate medical attention.
●Do not bring burning or high-temperature items close to the electrolyte.
The electrolyte may ignite and cause a fire.

841-3. Hybrid system
WARNING
■Hybrid battery (traction battery)
●Your vehicle contains a sealed lithium-ion battery.
●Never resell, hand over or modify the hybrid battery. To prevent accidents,
hybrid batteries that have been removed from a disposed vehicle are col-
lected through Toyota dealer. Do not dispose of the battery yourself.
Unless the battery is properly collected, the following may occur, resulting
in death or serious injury:
• The hybrid battery may be illegally disposed of or dumped, and it is haz-
ardous to the environment or someone may touch a high voltage part,
resulting in an electric shock.
• The hybrid battery is intended to be used exclusively with your hybrid
vehicle. If the hybrid battery is used outside of your vehicle or modified
in any way, accidents such as electric shock, heat generation, smoke
generation, an explosion and electrolyte leakage may occur.
When reselling or handing over your vehicle, the possibility of an accident
is extremely high because the person receiving the vehicle may not be
aware of these dangers.
●If your vehicle is disposed of without the hybrid battery having been
removed, there is a danger of serious electric shock if high voltage parts,
cables and their connectors are touched. In the event that your vehicle
must be disposed of, the hybrid battery must be disposed of by your
Toyota dealer or a qualified service shop. If the hybrid battery is not dis-
posed of properly, it may cause electric shock that can result in death or
serious injury.

851-3. Hybrid system
1
For safety and security
NOTICE
■Hybrid battery (traction battery) air intake vent
●Make sure not to block the air intake vent with anything, such as a seat
cover, plastic cover, or luggage. The hybrid battery (traction battery) may
overheat and be damaged.
●When dust etc. has accumulated in the air intake vent, clean it with a vac-
uum cleaner to prevent the vent from clogging.
●Do not get water or foreign materials in the air intake vent as this may
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●Do not carry large amounts of water such as water cooler bottles in the
vehicle. If water spills onto the hybrid battery (traction battery), the battery
may be damaged. Have the vehicle inspected by your Toyota dealer.
●There is a filter installed to the air intake vent. When the filter remains
noticeably dirty even after cleaning the air intake vent, filter cleaning or
replacement is recommended. When cleaning the filter, refer to P. 434.

891-4. Theft deterrent system
1
For safety and security
■System maintenance
The vehicle has a maintenance-free type alarm system.
■Items to check before locking the vehicle
To prevent unexpected triggering of the alarm and vehicle theft, make sure of
the following:
●Nobody is in the vehicle.
●The windows and moon roof (if equipped) are closed before the alarm is set.
●No valuables or other personal items are left in the vehicle.
■Triggering of the alarm
The alarm may be triggered in the following situations:
(Stopping the alarm deactivates the alarm system.)
●The trunk is opened using the mechani-
cal key.
●A person inside the vehicle opens a door
or the trunk or hood, or unlocks the vehi-
cle.
●The 12-volt battery is recharged or
replaced when the vehicle is locked.
(P. 490)

901-4. Theft deterrent system
■Alarm-operated door lock
In the following cases, depending on the situation, the door may automatically
lock to prevent improper entry into the vehicle:
●When a person remaining in the vehicle unlocks the door and the alarm is
activated.
●While the alarm is activated, a person remaining in the vehicle unlocks the
door.
●When recharging or replacing the 12-volt battery
NOTICE
■To ensure the system operates correctly
Do not modify or remove the system. If modified or removed, the proper
operation of the system cannot be guaranteed.

1002. Instrument cluster
■The meters and display illuminate when
The power switch is in 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.
■Hybrid System Indicator
Shows that an Eco-friendly driving range is being exceeded (during full
power driving etc.)
●By keeping the indicator needle within Eco area, more Eco-friendly driving
can be achieved.
●Charge area indicates “regeneration”
* status. Regenerated energy will be
used to charge the battery.
*: When used in this manual, “regeneration” refers to the conversion of
energy created by the movement of the vehicle into electrical energy.
The Hybrid System Indicator will not operate in the following situations:
●The “READY” indicator is not illuminated.
●The shift lever is in any position other than D. Charge area
Shows regenerative charging.
Hybrid Eco area
Shows that gasoline engine power is
not being used very often.
The gasoline engine will automatically
stop and restart under various condi-
tions.
Eco area
Shows that the vehicle is being driven in
an Eco-friendly manner.
Power area
1
2
3
4

1202. Instrument cluster
WARNING
■Caution for use while driving
●When operating the multi-information display while driving, pay extra
attention to the safety of the area around the vehicle.
●Do not look continuously at the multi-information display while driving as
you may fail to see pedestrians, objects on the road, etc. ahead of the
vehicle.
■The information display at low temperatures
Allow the interior of the vehicle to warm up before using the liquid crystal
information display. At extremely low temperatures, the information display
monitor may respond slowly, and display changes may be delayed.
For example, there is a lag between the driver’s shifting and the new gear
number appearing on the display. This lag could cause the driver to down-
shift again, causing rapid and excessive engine braking and possibly an
accident resulting in death or injury.
■Cautions during setting up the display
As the hybrid system needs to be running during setting up the display,
ensure that the vehicle is parked in a place with adequate ventilation. 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.
NOTICE
■While setting up the display
To prevent 12-volt battery discharge, ensure that the hybrid system is oper-
ating while setting up the display features.

1272. Instrument cluster
2
Instrument cluster
NOTICE
■To prevent damage to components
■When changing the settings of the head-up display
To prevent 12-volt battery discharge, ensure that the hybrid system is oper-
ating while the changing the settings of the head-up display.
●Do not place any drinks near the head-
up display projector. If the projector gets
wet, electrical malfunctions may result.
●Do not place anything on or put stickers
onto the head-up display projector.
Doing so could interrupt head-up dis-
play indications.
●Do not touch the inside of the head-up
display projector or thrust sharp edges
or the like into the projector.
Doing so could cause mechanical mal-
functions.