2023 TOYOTA PRIUS battery

6437-2. Steps to take in an emergency
PRIUS_OM_OM47F32E_(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.

6578-1. Specifications
PRIUS_OM_OM47F32E_(EE)
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Vehicle specifications
Fuel
Fuel type
When you find these types of fuel label at
the gas station, use only the fuel with one of
the following labels.

EU area:
Unleaded gasoline conforming to European
standard EN228 only
Except EU area:
Unleaded gasoline only
Research Octane Number
EU area:
95 or higher
Except EU area:
95 or higher
Russia only:
91 or higher
Fuel tank capacity
(Reference)43 L (11.4 gal., 9.5 lmp.gal.)
Electric motor (traction motor)
FrontRear (AWD models)
Ty p ePermanent magnet
synchronous motorPermanent induc-
tion motor
Maximum output53 kW5.3 kW
Maximum torque163 N•m (16.6 kgf•m,
120.2 ft•lbf)55 N•m (5.6 kgf•m,
40.6 ft•lbf)
Hybrid battery (traction battery)
Ty p eNickel-Metal hydride battery
Voltage7.2 V/module
Capacity6.5 Ah (3HR)
Quantity28 modules
Nominal voltage201.6 V

6638-1. Specifications
PRIUS_OM_OM47F32E_(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.
*: 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 battery.
Charging ratesQuick charge15 A max.
Slow charge5 A max.
Transmission
Fluid capacity*3.6 L (3.8 qt., 3.2 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.
Rear differential (rear electric motor) (AWD models)
Fluid capacity*1.2 L (1.3 qt., 1.1 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.

6788-2. Customization
PRIUS_OM_OM47F32E_(EE)
■In the following situations, customize mode in which the settings can be
changed through the multi-information display will automatically be
turned off.
● A warning message appears after the customize mode screen is displayed.
● 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.

6798-3. Initialization
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Vehicle specifications
Items to initialize
The following items must be initialized for normal system opera-
tion after such cases as the 12-volt battery being reconnected,
or maintenance being performed on the vehicle:
ItemWhen to initializeReference
Power windowWhen functioning abnormallyP. 2 11
Moon roof (if equipped)When functioning abnormallyP. 217
Parking Support Brake func-
tion (if equipped)After reconnecting or chang-
ing the 12-volt batteryP. 402
S-IPA (Simple Intelligent
Parking Assist System) (if
equipped)After reconnecting or chang-
ing the 12-volt batteryP. 430
Panoramic view monitor (if
equipped)After reconnecting or chang-
ing the 12-volt battery
Refer to
“Navigation
and multi-
media sys-
tem
Owner’s
manual”.
Tire pressure warning sys-
tem (if equipped)
• When rotating the tires on
vehicles with differing front
and rear tire inflation pres-
sures
• When changing the tire infla-
tion pressure by changing
traveling speed or load
weight, etc.
P. 530

682What to do if... (Troubleshooting)
PRIUS_OM_OM47F32E_(EE)
What to do if... (Troubleshooting)
●If you lose your mechanical keys, new genuine mechanical keys can be
made by any authorized Toyota retailer or Toyota authorized repairer, or
any reliable repairer. (P. 173)
●If you lose your electronic keys, the risk of vehicle theft increases signifi-
cantly. Contact any authorized Toyota retailer or Toyota authorized
repairer, or any reliable repairer immediately. (P. 176)
●Is the electronic key battery weak or depleted? (P. 554)
●Is the power switch in ON mode?
When locking the doors, turn the power switch off. (P. 246)
●Is the electronic key left inside the vehicle?
When locking the doors, make sure that you have the electronic key on
your person.
●The function may not operate properly due to the condition of the radio
wave. (P. 190)
●Is the child-protector lock set?
The rear door cannot be opened from inside the vehicle when the lock is
set. Open the rear door from outside and then unlock the child-protector
lock. (P. 180)
If you have a problem, check the following before contacting any
authorized Toyota retailer or Toyota authorized repairer, or any
reliable repairer.
The doors cannot be locked, unlocked, opened or closed
You lose your keys
The doors cannot be locked or unlocked
The rear door cannot be opened

683What to do if... (Troubleshooting)
PRIUS_OM_OM47F32E_(EE)
●Did you press the power switch while firmly depressing the brake pedal?
( P. 244)
●Is the shift position in P? (P. 254)
●Is the electronic key anywhere detectable inside the vehicle? (P. 188)
●Is the electronic key battery weak or depleted?
In this case, the hybrid system can be started in a temporary way.
( P. 637)
●Is the 12-volt battery discharged? (P. 639)
●Is the window lock switch pressed?
The power windows except for the one at the driver’s seat cannot be oper-
ated if the window lock switch is pressed. ( P. 210)
●The auto power off function will be operated if the vehicle is left in
ACCESSORY or ON mode (the hybrid system is not operating) for a
period of time. ( P. 2 4 6 )
If you think something is wrong
The hybrid system does not start
The windows do not open or close by operating the power
window switches
The power switch is turned off automatically

687Alphabetical index
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Antenna
Smart entry & start system.... 187
Anti-lock brake system
(ABS) ...................................... 441
Function ................................ 441
Warning light ......................... 581
Approach warning ................... 339
Armrest ..................................... 493
Assist grips .............................. 494
Audio input
*
Audio system*
Automatic air conditioning
system .................................... 458
Air conditioning filter.............. 542
Automatic air conditioning
system ................................ 458
Blower customization ............ 462
Eco score (A/C score) ........... 150
Front seat concentrated
airflow mode (S-FLOW)...... 461
Automatic headlight leveling
system .................................... 264
Automatic High Beam
(AHB) ...................................... 266
Automatic light control
system .................................... 263
Auxiliary box ............................ 477Back door ................................. 182
Back-up light ............................ 561
Replacing light bulb .............. 562
Wattage ................................ 667
Battery (12-volt battery) .......... 521
Battery checking ................... 521
If the 12-volt battery is
discharged .......................... 639
Preparing and checking
before winter....................... 452
Replacing .............................. 642
Warning light ......................... 580
Battery (traction battery)........... 84
Air intake vent ......................... 85
Location .................................. 84
Specification ......................... 657
Blind Spot Monitor (BSM) ....... 356
Blind Spot Monitor
function ............................... 372
Rear Crossing Traffic Alert
function ............................... 375
Bluetooth
®*
Bottle holders .......................... 476
Brake
Fluid ...................................... 664
Parking brake........................ 260
Regenerative braking.............. 81
Warning light ......................... 580
Brake assist ............................. 441
Brake Override System ........... 221
Break-in tips ............................. 222
Brightness control
Instrument cluster light
control................................. 102
BSM (Blind Spot Monitor) ....... 356
Blind Spot Monitor function ... 372
Rear Crossing Traffic Alert
function ............................... 375
B
*: Refer to “Navigation and multimedia system Owner’s manual”.