key battery TOYOTA PRIUS 2023 Owners Manual

TABLE OF CONTENTS4
PRIUS_OM_OM47F32E_(EE)5-1. Using the air conditioning
system and defogger
Automatic air conditioning
system .............................458
Seat heaters ......................468
5-2. Using the interior lights
Interior lights list .................470
• Front interior light...........471
• Front personal lights ......471
• Rear interior light ...........472
5-3. Using the storage features
List of storage features ......473
• Glove box ......................474
• Console box ..................474
• Cup holders ...................475
• Bottle holders/
door pockets ..................476
• Auxiliary boxes ..............477
• Seat back pockets .........478
Luggage compartment
features............................479
5-4. Using the other interior
features
Other interior features ........485
• Sun visors ......................485
• Vanity mirrors ................485
• Power outlets .................486
• Wireless charger............487
• Armrest ..........................493
• Coat hooks ....................493
• Assist grips ....................4946-1. Maintenance and care
Cleaning and protecting
the vehicle exterior .......... 496
Cleaning and protecting
the vehicle interior ........... 502
6-2. Maintenance
Maintenance
requirements ................... 505
6-3. Do-it-yourself maintenance
Do-it-yourself service
precautions ..................... 508
Hood.................................. 511
Positioning a floor jack ...... 513
Engine compartment ......... 514
Tires .................................. 528
Tire inflation pressure........ 537
Wheels .............................. 539
Air conditioning filter .......... 542
Cleaning the hybrid battery
(traction battery) air intake
vent and filter .................. 545
Wiper insert
replacement .................... 550
Electronic key battery ........ 554
Checking and replacing
fuses ............................... 557
Light bulbs ......................... 561
5Interior features6Maintenance and care

5
1
8
7
6
5
4
3
2
PRIUS_OM_OM47F32E_(EE)
7-1. Essential information
Emergency flashers ...........568
If your vehicle has to
be stopped in an
emergency .......................569
If the vehicle is submerged
or water on the road is
rising ................................570
7-2. Steps to take in an
emergency
If your vehicle needs
to be towed ......................572
If you think something is
wrong ...............................579
If a warning light turns on
or a warning buzzer
sounds .............................580
If a warning message is
displayed .........................589
If you have a flat tire
(vehicles without
spare tire) ........................598
If you have a flat tire
(vehicles with
spare tire) ........................618
If the hybrid system will
not start............................634
If the electronic key does
not operate properly ........636
If the 12-volt battery is
discharged .......................639
If your vehicle
overheats .........................645
If the vehicle becomes
stuck ................................650
8-1. Specifications
Maintenance data
(fuel, oil level, etc.) .......... 654
Fuel information ................ 668
8-2. Customization
Customizable features ...... 670
8-3. Initialization
Items to initialize................ 679
7When trouble arises8Vehicle specifications

941-5. Theft deterrent system
PRIUS_OM_OM47F32E_(EE)
■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 side 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 doors are unlocked using the
mechanical key.
● A person inside the vehicle opens a door
or hood, or unlocks the vehicle using an
inside lock button.
● The 12-volt battery is recharged or
replaced when the vehicle is locked.
( P. 639)

1743-1. Key information
PRIUS_OM_OM47F32E_(EE)■Electronic key battery depletion
●The standard battery life is 1 to 2 years.
●If the battery becomes low, an alarm will sound in the cabin and a message
will be displayed on the multi-information display when the hybrid system
stops.
●As the electronic key always receives radio waves, the battery will become
depleted even if the electronic key is not used. The following symptoms indi-
cate that the electronic key battery may be depleted. Replace the battery
when necessary. (P. 554)
• The smart entry & start system or the wireless remote control does not
operate.
• The detection area becomes smaller.
• The LED indicator on the key surface does not turn on.
You can replace the battery by yourself (P. 554). However, as there is a
danger that the electronic key may be damaged, it is recommended that
replacement is carried out by any authorized Toyota retailer or Toyota
authorized repairer, or any reliable repairer.
●To avoid serious deterioration, do not leave the electronic key within 1 m
(3 ft.) of the following electrical appliances that produce a magnetic field:
•TVs
• Personal computers
• Cellular phones, cordless phones and battery chargers
• Table lamps
• Induction cookers

1753-1. Key information
3
Operation of each component
PRIUS_OM_OM47F32E_(EE)■If a message regarding the state of the electronic key or power switch
mode, etc. is shown
To prevent trapping the electronic key inside the vehicle, leaving the vehicle
without turning off the power switch or other passengers from unintentionally
taking the key out of the vehicle, etc., a message that prompts the user to
confirm the state of the electronic key or power switch mode may be shown
on the multi-information display. In those cases, follow the instructions on the
display immediately.
■If “Key Battery Low Replace Key Battery” is displayed on the multi-infor-
mation display
The electronic key has a low battery. Replace the electronic key battery.
(P. 554)
■Replacing the battery
P. 554
■Confirmation of the registered key number
The number of keys already registered to the vehicle can be confirmed. Ask
any authorized Toyota retailer or Toyota authorized repairer, or any reliable
repairer.
■If “A New Key has been Registered Contact Your Dealer for Details” is
displayed on the multi-information display
This message will be displayed each time the driver’s door is opened when
the doors are unlocked from the outside for approximately 10 days after a
new electronic key has been registered.
If this message is displayed but you have not had a new electronic key regis-
tered, ask any authorized Toyota retailer or Toyota authorized repairer, or any
reliable repairer to check if an unknown electronic key (other than those in
your possession) has been registered.
■If a wrong key is used
The key cylinder rotates freely to isolate inside mechanism.

1783-2. Opening, closing and locking the doors
PRIUS_OM_OM47F32E_(EE)
■Operation signals
The emergency flashers flash to indicate that the doors have been locked/
unlocked. (Locked: Once; Unlocked: Twice)
■Security feature
If a door is not opened within approximately 30 seconds after the vehicle is
unlocked, the security feature automatically locks the vehicle again.
■When the door cannot be locked by the lock sensor on the surface of the
door handle
■Door lock buzzer
If an attempt to lock the doors is made when a door is not fully closed, a
buzzer sounds continuously for 5 seconds. Fully close the door to stop the
buzzer, and lock the vehicle once more.
■Setting the alarm (if equipped)
Locking the doors will set the alarm system. (P. 93)
■If the smart entry & start system or the wireless remote control does not
operate properly
●Use the mechanical key to lock and unlock the doors. (P. 636)
●Replace the key battery with a new one if it is depleted. (P. 554) When the door cannot be locked even if
the lock sensor on the surface of the door
handle is touched by a finger, touch the
lock sensor with the palm.
When gloves are being worn, remove the
gloves.

1893-2. Opening, closing and locking the doors
3
Operation of each component
PRIUS_OM_OM47F32E_(EE)
■ When “Smart Entry & Start System Malfunction See Owner’s Manual” is
displayed on the multi-information display
The system may be malfunctioning. Have the vehicle inspected by any autho-
rized Toyota retailer or Toyota authorized repairer, or any reliable repairer
immediately.
■ Battery-saving function
The battery-saving function will be activated in order to prevent the electronic
key battery and the 12-volt battery from being discharged while the vehicle is
not in operation for a long time.
● In the following situations, the smart entry & start system may take some
time to unlock the doors.
• The electronic key has been left in an area of approximately 2 m (6 ft.) of
the outside of the vehicle for 10 minutes or longer.
• The smart entry & start system has not been used for 5 days or longer.
● If the smart entry & start system has not been used for 14 days or longer,
the doors cannot be unlocked at any doors except the driver’s door. In this
case, take hold of the driver’s door handle, or use the wireless remote con-
trol or the mechanical key, to unlock the doors.
■ Electronic Key Battery-Saving Function
When battery-saving mode is set, battery depletion is minimized by stopping
the electronic key from receiving radio waves.
Press twice while pressing and
holding . Confirm that the electronic
key indicator flashes 4 times.
While the battery-saving mode is set, the
smart entry & start system cannot be
used. To cancel the function, press any of
the electronic key buttons.

1903-2. Opening, closing and locking the doors
PRIUS_OM_OM47F32E_(EE)■Conditions affecting operation
The smart entry & start system, wireless remote control and immobilizer sys-
tem use weak radio waves. In the following situations, the communication
between the electronic key and the vehicle may be affected, preventing the
smart entry & start system, wireless remote control and immobilizer system
from operating properly. (Ways of coping: P. 636)
●When the electronic key battery is depleted
●Near a TV tower, electric power plant, gas station, radio station, large dis-
play, airport or other facility that generates strong radio waves or electrical
noise
●When the electronic key is in contact with, or is covered by the following
metallic objects
• Cards to which aluminum foil is attached
• Cigarette boxes that have aluminum foil inside
• Metallic wallets or bags
• Coins
• Hand warmers made of metal
• Media such as CDs and DVDs
●When other wireless key (that emit radio waves) is being used nearby
●When carrying the electronic key together with the following devices that
emit radio waves
• Portable radio, cellular phone, cordless phone or other wireless commu-
nication devices
• Another vehicle’s electronic key or a wireless key that emits radio waves
• Personal computers or personal digital assistants (PDAs)
• Digital audio players
• Portable game systems
●If window tint with a metallic content or metallic objects are attached to the
rear window
●When the electronic key is placed near a battery charger or electronic
devices

1913-2. Opening, closing and locking the doors
3
Operation of each component
PRIUS_OM_OM47F32E_(EE)■Note for the entry function
●Even when the electronic key is within the effective range (detection areas),
the system may not operate properly in the following cases:
• The electronic key is too close to the window or outside door handle, near
the ground, or in a high place when the doors are locked or unlocked.
• The electronic key is on the instrument panel, floor, or in the door pockets
or glove box when the hybrid system is started or power switch modes
are changed.
●Do not leave the electronic key on top of the instrument panel or near the
door pockets when exiting the vehicle. Depending on the radio wave recep-
tion conditions, it may be detected by the antenna outside the cabin and the
door will become lockable from the outside, possibly trapping the electronic
key inside the vehicle.
●As long as the electronic key is within the effective range, the doors may be
unlocked or locked by anyone.
●Even if the electronic key is not inside the vehicle, it may be possible to start
the hybrid system if the electronic key is near the window.
●The doors may unlock if a large amount of water splashes on the door han-
dle, such as in the rain or in a car wash when the electronic key is within the
effective range. (The door will automatically be locked after approximately
30 seconds if the doors are not opened and closed.)
●If the wireless remote control is used to lock the doors when the electronic
key is near the vehicle, there is a possibility that the door may not be
unlocked by the entry function. (Use the wireless remote control to unlock
the doors.)
●Touching the door lock sensor while wearing gloves may delay or prevent
lock operation. Remove the gloves and touch the lock sensor again.
●On some models: When the lock operation is performed using the lock sen-
sor, recognition signals will be shown up to two consecutive times. After this,
no recognition signals will be given.
●If the door handle becomes wet while the electronic key is within the effec-
tive range, the door may lock and unlock repeatedly. In this case, follow the
following correction procedures to wash the vehicle.
• Place the electronic key in a location 2 m (6 ft.) or more away from the
vehicle. (Take care to ensure that the key is not stolen.)
• Set electronic key to battery-saving mode to disable the smart entry &
start system. (P. 189)

2123-5. Opening and closing the windows and moon roof
PRIUS_OM_OM47F32E_(EE)■Door lock linked window operation
●The power windows can be opened and closed using the mechanical key.
*
(P. 636)
●The power windows can be opened and closed using the wireless remote
control.
* (P. 177)
*: These settings must be customized at any authorized Toyota retailer or
Toyota authorized repairer, or any reliable repairer.
■When the 12-volt battery is disconnected
The window lock switch is disabled. If necessary, press the window lock
switch after reconnecting the 12-volt battery.
■Power window open reminder function
The buzzer sounds and a message is shown on the multi-information display
in the instrument cluster when the power switch is turned off and the driver’s
door is opened with the power windows open.
■Customization
Settings (e.g. linked door lock operation) can be changed.
(Customizable features: P. 670)