2023 TOYOTA COROLLA HYBRID battery

841-4. Hybrid system
WARNING
●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
(2WD models) or four wheels
(AWD models) 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.366)
●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.
●Do not touch the 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.
●If electrolyte is leaking from the
hybrid battery (traction battery),
do not approac h the vehicle.
Even in the unlikely event that
the hybrid battery (traction bat-
tery) is damaged, the internal
construction of the battery will
prevent a large amount of elec-
trolyte from leaking out. How-
ever, 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 bring burning or
high-temperature items close to
the electrolyte.
The electrolyte may ignite and
cause a fire.
■Hybrid battery (traction bat-
tery)
●Your vehicle contains a sealed
lithium-ion battery.
●Never resell, hand over or mod-
ify the hybrid battery. To prevent
accidents, hybrid batteries that
have been removed from a dis-
posed vehicle are collected
through Toyota dealer. Do not
dispose of the battery yourself.
Unless the battery is properly col-
lected, the following may occur,
resulting in dea th or serious
injury:
• The hybrid batte ry may be ille-
gally disposed of or dumped,
and it is hazardous to the envi-
ronment or someone may touch
a high voltage part, resulting in
an electric shock.

851-4. Hybrid system
1
For safety and security
There are air intake vents under the left side of the rear seat with
the purpose of cooling the
hybrid battery (traction battery).
If the vents are blocked, it may
interfere with the cooling of the
hybrid battery (traction battery).
If input/output of the hybrid bat-
tery (traction battery) becomes
limited and the distance that the
vehicle can be driven using the
electric motor (traction motor) is
reduced, the fuel economy may
be reduced.
WARNING

861-4. Hybrid system
When a certain level of impact is
detected by the impact sensor,
the emergency shut off system
blocks the high voltage current
and stops the fuel pump to mini-
mize the risk of electrocution
and fuel leakage. If the emer-
gency shut off system activates,
your vehicle will not restart. To
restart the hybrid system, con-
tact your Toyota dealer.
A message is automatically dis-
played when a malfunction
occurs in the hybrid system or
an improper operation is
attempted.
If a warning message is shown
on the multi-information display,
read the message and follow the
instructions.
■If a warning light comes on, a
warning message is displayed,
or the 12-volt battery is discon-
nected
The hybrid system may not start. In this case, try to start the system
again. If the “READY” indicator does
not come on, contact your Toyota
dealer.
Emergency shut off sys-
tem
Hybrid warning message

891-5. Theft deterrent system
1
For safety and security
●The 12-volt battery is recharged or
replaced when the vehicle is
locked. (P.412)
■Alarm-operated door lock
In the following cases, depending
on the situation, th e door may auto-
matically lock to p revent 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 oper-
ates correctly
Do not modify or remove the sys-
tem. If modified or removed, the
proper operation of the system
cannot be guaranteed.

1002-1. Instrument cluster
Digital speedometer
Display change button (P.101)
■Hybrid System Indicator
Charge area
Shows regeneration* status.
Regenerated energy will be used to
charge the hybrid battery (traction
battery).
Hybrid Eco area
Shows that gasoline engine power
is not being used very often.
The gasoline engine will automati-
cally stop and restart under various
conditions.
Eco area
Shows that the vehicle is being
driven in an Eco-friendly manner.
By keeping the bar display within
Eco area, more Eco-friendly driv-
ing can be achieved.
Power area
Shows that an Eco-friendly driving
range is being exceeded (during full
power driving etc.)
*: When used in this manual, regen- eration refers to the conversion of energy created by the movement
of the vehicle into electrical
energy.
■Engine speed
On hybrid electric vehicles, engine
speed is precisely controlled in
order to help improve fuel efficiency
and reduce exhaust emissions etc.
There are times when the engine
speed that is displayed may differ
even when vehicle operation and
driving conditions are the same.
■Hybrid System Indicator will
operate when
The Hybrid System Indicator will
operate in the following situations:
●The “READY” indicator is illumi-
nated.
●The shift lever is in D or B.
■Outside temperature display
●In the following sit uations, the cor-
rect outside temperature may not
be displayed, or the display may
take longer than normal to
change:
• When stopped, or driving at low
speeds (less than 12 mph [20
km/h])
• When the outside temperature
has changed suddenly (at the
entrance/exit of a garage, tunnel,
etc.)
●When “--” or “E” i s displayed, the
system may be malfunctioning.
Take your vehicle to your Toyota
dealer.
■Liquid crystal display
 P. 1 1 0
■Customization
The gauges and meters can be cus-
tomized in of t he multi-informa-
tion display. ( P.442)

1052-1. Instrument cluster
2
Vehicle status information and indicators
EV indicator (P.78)
Hybrid System Indicator/ECO
Accelerator Guidance
Eco score
 Hybrid System Indicator
Displays hybrid system output or
regeneration level.
Charge area
Shows regeneration* status.
Regenerated energy will be used to
charge the hybrid battery (traction
battery).
Hybrid Eco area
Shows that gasoline engine power
is not being used very often.
The gasoline engine will automati-
cally stop and restart under various
conditions.
Eco area
Shows that the vehicle is being
driven in an Eco-friendly manner.
By keeping the bar display within
Eco area, more Eco-friendly driv-
ing can be achieved.
Power area
Shows that an Eco-friendly driving
range is being exceeded (during full
power driving etc.)
*: When used in this manual, regen- eration refers to the conversion of energy created by the movement
of the vehicle into electrical
energy.

ECO Accelerator Guidance
Eco area
Indicates that the vehicle is being
driven in an Eco-friendly manner.
Zone of Eco acceleration
Displayed as a blue bar, and rep-
resents an estimated suitable
accelerator pedal operation range
for the current driving conditions,
such as starting off or cruising.
This display changes according to
situation, such as when starting off
or cruising.
Current accelerator pedal
operation
Displayed as a green bar when
within the Eco area.
Eco-friendly acceleration can be
achieved by keeping the accelera-
tor pedal operation display within
the range indicated by the blue bar.
(  P.160)
 Eco score
The following 3 Ec o driving meth-
ods are evaluated in 5 levels:
Smooth start-off acceleration, driv-
ing without sudden acceleration,

1092-1. Instrument cluster
2
Vehicle status information and indicators
on again, press any of the following
meter control switches //// /.
Default setting
Select to reset the meter display
settings to the default setting.
■Vehicle functions and set-
tings that can be changed
 P.442
■Suspension of the settings dis-
play
●Some settings cannot be changed
while driving. When changing set-
tings, park the vehicle in a safe
place.
●If a warning message is displayed,
operation of the settings display
will be suspended.
■Display
Content display area
By selecting menu icons on the
multi-information di splay, a variety
of driving-related information can
be displayed. The multi-information
display can also be used to change
display settings and other vehicle
settings.
Warning or advice pop-up displays
are also displayed in certain situa-
tions.
Driving support system status
display area
Displays an image when the follow-
ing systems are operating and a
menu icon other than is
selected:
• LTA (Lane Tracing Assist)
• LDA (Lane Departure Alert)
• Dynamic radar cruise control
■Menu icons
The menu icons will be dis-
played by pressing the or
meter control switch.
WARNING
■Cautions during setting up
the display
If the hybrid system is operating
while changing certain settings on
the settings 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 col-
lect and enter the vehicle. This
may lead to death or a serious
health hazard.
NOTICE
■During setting up the display
To prevent 12-volt battery dis-
charge, ensure that the hybrid
system is operating while setting
up the display features.
Multi-infor mation dis-
play (7-inch display)
Display and menu icons

1152-1. Instrument cluster
2
Vehicle status information and indicators
play to any of the following: aver-
age vehicle
speed/distance/elapsed time.
Pop-up display
Select to enable/disable pop-up
displays for each relevant system.
Multi-information display off
Select to turn the m ulti-information
display off.
To turn the multi-in formation display
on again, press any of the following
meter control switches
//// /.
Default setting
Select to reset the meter display
settings to the default setting.
■Vehicle functions and set-
tings that can be changed
 P.442
■Suspension of the settings dis-
play
●Some settings cannot be changed
while driving. When changing set-
tings, park the vehicle in a safe
place.
●If a warning message is displayed,
operation of the settings display
will be suspended.
WARNING
■Cautions during setting up
the display
If the hybrid system is operating
while changing certain settings on
the settings display, ensure that
the vehicle is parked in a place
with adequate ventilation. In a
closed area such as a garage,
exhaust gases in cluding harmful
carbon monoxide (CO) may col-
lect and enter the vehicle. This
may lead to death or a serious
health hazard.
NOTICE
■During setting up the display
To prevent 12-volt battery dis-
charge, ensure that the hybrid
system is operating while setting
up the display features.