2023 TOYOTA PRIUS PLUG-IN HYBRID battery

7008-2. Steps to take in an emergency
Prius Plug-in Hybrid_OM_OM47F38E_(EE)
Connect the jumper cables according to the following procedure:
Connect a positive jumper cable clamp to the positive (+) battery
terminal on your vehicle.
Connect the clamp on the other end of the positive cable to the
positive (+) battery terminal on the second vehicle.
Connect a negative cable clamp to the negative (-) battery termi-
nal on the second vehicle.
Connect the clamp at the other end of the negative cable to a
solid, stationary, unpainted metallic point away from the 12-volt
battery and any moving parts, as shown in the illustration.
Start the engine of the second vehicle. Increase the engine speed
slightly and maintain at that level for approximately 5 minutes to
recharge the 12-volt battery of your vehicle.
Maintain the engine speed of the second vehicle and start the
hybrid system of your vehicle by turning the power switch to ON
mode.
Make sure the “READY” indicator comes on. If the indicator light
does not come on, contact any authorized Toyota retailer or Toyota
authorized repairer, or any reliable repairer.
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7018-2. Steps to take in an emergency
Prius Plug-in Hybrid_OM_OM47F38E_(EE)
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When trouble arises
Once the hybrid system has started, remove the jumper cables in
the exact reverse order from which they were connected.
To install the engine cover, conduct the removal procedure in
reverse. After installing, check that the fixed pins are inserted
securely.
Once the hybrid system starts, have the vehicle inspected at any
authorized Toyota retailer or Toyota authorized repairer, or any reliable
repairer as soon as possible.
■ When opening the cover of the positive (+) battery terminal
 P. 595
■ Starting the hybrid system when the 12-volt battery is discharged
The hybrid system cannot be started by push-starting.
■ To prevent 12-volt battery discharge
● Turn off the headlights and the audio system while the hybrid system is off.
● Turn off any unnecessary electrical components when the vehicle is running
at a low speed for an extended period, such as in heavy traffic.
■ When the 12-volt battery is removed or discharged
● Information stored in the ECU is cleared. When the 12-volt battery is
depleted, have the vehicle inspected at any authorized Toyota retailer or
Toyota authorized repairer, or any reliable repairer.
● Some systems may require initialization. (P. 736)
■ When removing the 12-volt battery terminals
When the 12-volt battery terminals are removed, the information stored in the
ECU is cleared. Before removing the 12-volt battery terminals, contact any
authorized Toyota retailer or Toyota authorized repairer, or any reliable
repairer.
■ Charging the 12-volt battery
The electricity stored in the 12-volt battery will discharge gradually even when
the vehicle is not in use, due to natural discharge and the draining effects of
certain electrical appliances. If the vehicle is left for a long time, the 12-volt
battery may discharge, and the hybrid system may be unable to start. (The
12-volt battery recharges automatically while the hybrid system is operating.)
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7028-2. Steps to take in an emergency
Prius Plug-in Hybrid_OM_OM47F38E_(EE)
■When recharging or replacing the 12-volt battery
● In some cases, it may not be possible to unlock the doors using the smart
entry & start system when the 12-volt battery is discharged. Use the wire-
less remote control or the mechanical key to lock or unlock the doors.
● The hybrid system may not start on the first attempt after the 12-volt battery
has recharged but will start normally after the second attempt. This is not a
malfunction.
● It may be impossible to unlock the charging port lid or locking and unlocking
the charging connector immediately after the 12-volt battery is reconnected.
In this case, carry the electronic key on your person and operate the
charging port lid or charging connector lock switch again.
● The power switch mode is memorized by the vehicle. When the 12-volt bat-
tery is reconnected, the system will return to the mode it was in before the
12-volt battery was discharged. Before disconnecting the 12-volt battery,
turn the power switch off.
If you are unsure what mode the power switch was in before the 12-volt bat-
tery discharged, be especially careful when reconnecting the 12-volt battery.
● If the 12-volt battery discharges while the shift position is in P, it may not be
possible to shift the shift position to other positions. In this case, the vehicle
cannot be towed without lifting both front wheels because the front wheels
will be locked. ( P. 652)
■ When replacing the 12-volt battery
● Use a 12-volt battery that conforms to European regulations.
● Use a 12-volt battery that the case size is same as the previous one (LN1),
20 hour rate capacity (20HR) is equi valent (45Ah) or greater, and perfor-
mance rating (CCA) is equivalent (295A) or greater.
• If the sizes differ, the 12-volt battery cannot be properly secured.
• If the 20 hour rate capacity is low, even if the time period where the vehi-
cle is not used is a short time, the 12-volt battery may discharge and the
hybrid system may not be able to start.
● For details, consult any authorized Toyota retailer or Toyota authorized
repairer, or any reliable repairer.

7038-2. Steps to take in an emergency
Prius Plug-in Hybrid_OM_OM47F38E_(EE)
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When trouble arises
WARNING
■When removing the 12-volt battery terminals
Always remove the negative (-) terminal first. If the positive (+) terminal con-
tacts any metal in the surrounding area when the positive (+) terminal is
removed, a spark may occur, leading to a fire in addition to electrical shocks
and death or serious injury.
■ Avoiding 12-volt battery fires or explosions
Observe the following precautions to prevent accidentally igniting the flam-
mable gas that may be emitted from the 12-volt battery:
● Make sure each jumper cable is connected to the correct terminal and that
it is not unintentionally in contact with any other than the intended terminal.
● Do not allow the other end of the jumper cable connected to the “+” termi-
nal to come into contact with any other parts or metal surfaces in the area,
such as brackets or unpainted metal.
● Do not allow the + and - clamps of the jumper cables to come into contact
with each other.
● Do not smoke, use matches, cigarette lighters or allow open flame near
the 12-volt battery.
■ 12-volt battery precautions
The 12-volt battery contains poisonous and corrosive acidic electrolyte,
while related parts contain lead and lead compounds. Observe the following
precautions when handling the 12-volt battery:
● When working with the 12-volt battery, always wear safety glasses and
take care not to allow any battery fluids (acid) to come into contact with
skin, clothing or the vehicle body.
● Do not lean over the 12-volt battery.
● In the event that battery fluid comes into contact with the skin or eyes,
immediately wash the affected area with water and seek medical attention.
Place a wet sponge or cloth over the affected area until medical attention
can be received.
● Always wash your hands after handling the 12-volt battery support, termi-
nals, and other battery-related parts.
● Do not allow children near the 12-volt battery.

7179-1. Specifications
Prius Plug-in Hybrid_OM_OM47F38E_(EE)
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Vehicle specifications
Generation/traction motor
Traction motor
■Oil capacity (Drain and refill [Reference*])
*: The engine oil capacity is a reference quantity to be used when changing
the engine oil. Park the vehicle on level ground. After warming up the
engine and turning off the hybrid system, wait more than 5 minutes, and
check the oil level on the dipstick.
Electric motor (generation motor/traction motor)
Ty p ePermanent magnet synchronous motor
Maximum output22.5 kW
Maximum torque40 N•m (4.1 kgf•m, 29.5 ft•lbf)
Ty p ePermanent magnet synchronous motor
Maximum output53 kW
Maximum torque163 N•m (16.6 kgf•m, 120.2 ft•lbf)
Hybrid battery (traction battery)
Ty p eLithium-ion battery
Voltage3.7 V/cell
Capacity25 Ah
Quantity95 cells
Nominal voltage351.5 V
Lubrication system
With filter4.2 L (4.4 qt., 3.7 Imp.qt.)
Without filter3.9 L (4.1 qt., 3.4 Imp.qt.)

7219-1. Specifications
Prius Plug-in Hybrid_OM_OM47F38E_(EE)
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Vehicle specifications
*: The fluid capacity is the quantity of reference.
If replacement is necessary, contact any authorized Toyota retailer or
Toyota authorized repairer, or any reliable repairer.
Electrical system (12-volt battery)
Specific gravity
reading at 20 C (68F):
1.25 or higher
If the specific gravity is lower than the
standard value, charge the 12-volt bat-
tery.
Charging ratesQuick charge15 A max.
Slow charge5 A max.
Transmission
Fluid capacity*3.7 L (3.9 qt., 3.3 Imp.qt.)
Fluid typeToyota Genuine ATF WS
NOTICE
■ Transmission fluid type
Using transmission fluid other than the above type may cause abnormal
noise or vibration, or ultimately damage the transmission of your vehicle.

7349-2. Customization
Prius Plug-in Hybrid_OM_OM47F38E_(EE)
■Illumination (P. 541)
■Charge settings
■Maintenance system
FunctionDefault
settingCustomized
setting
Time elapsed before the inte-
rior lights turn off15 secondsOff
–OO 7.5 seconds
30 seconds
Operation after the power
switch is turned offOnOff––O
Operation when the doors are
unlockedOnOff––O
Operation when you approach
the vehicle with the electronic
key on your person
OnOff––O
Footwell lighting On Off – – O
Interior lights illumination con-
trolOn Off – – O
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Charge scheduleSetting the charging schedule: P. 169
Charge currentChanging the upper limit of the charging cur-
rent: P. 140
Traction battery heaterSetting “Traction Battery Heater” on/off:
P. 145
Tire pressure warning
systemInitializing the tire pressure warning system:
P. 601

7359-2. Customization
Prius Plug-in Hybrid_OM_OM47F38E_(EE)
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Vehicle specifications
■In the following situations, customize mode in which the settings can be
changed through the multi-information display will automatically be
turned off.
● The power switch is turned off.
● The vehicle begins to move while the customize mode screen is displayed.
WARNING
■Cautions during customization
As the hybrid system needs to be operating during customization, 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
■ During customization
To prevent 12-volt battery discharge, ens ure that the hybrid system is oper-
ating while customizing features.