TOYOTA PRIUS 2023 Owners Manual

891-4. Hybrid system
1
PRIUS_OM_OM47F32E_(EE)
For safety and security
WARNING
■Hybrid battery (traction 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 any authorized Toyota retailer or Toyota authorized repairer,
or any reliable repairer. 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 any autho-
rized Toyota retailer or Toyota authorized repairer, or any reliable repairer
or a qualified service shop. If the hybrid battery is not disposed of properly,
it may cause electric shock that can result in death or serious injury.

901-4. Hybrid system
PRIUS_OM_OM47F32E_(EE)
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. If the vent is blocked, the charging/dis-
charging of the hybrid battery (traction battery) may become limited.
● 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
cause a short circuit and damage the hybrid battery (traction battery).
● 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 any authorized Toyota
retailer or Toyota authorized repairer, or any reliable repairer.
● 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. For information regarding filter cleaning or
replacement, refer to P. 545.
● If “Maintenance Required for Traction Battery Cooling Parts See Owner's
Manual” is shown on the multi-information display, the air intake vent and
filter may be clogged. Refer to P. 545 for information on how to clean the
air intake vent.

91
1
1-5. Theft deterrent system
PRIUS_OM_OM47F32E_(EE)
For safety and security
Immobilizer system
The indicator light flashes after
the power switch has been turned
off to indicate that the system is
operating.
The indicator light stops flashing
after the power switch has been
turned to ACCESSORY or ON
mode to indicate that the system
has been canceled.
■ System maintenance
The vehicle has a maintenance-free type immobilizer system.
■ Conditions that may cause the system to malfunction
● If the grip portion of the key is in contact with a metallic object
● If the key is in close proximity to or touching a key registered to the security
system (key with a built-in transponder chip) of another vehicle
The vehicle’s keys have built-in transponder chips that prevent
the hybrid system from starting if a key has not been previously
registered in the vehicle’s on-board computer.
Never leave the keys inside the vehicle when you leave the vehi-
cle.
This system is designed to help prevent vehicle theft but does not
guarantee absolute security against all vehicle thefts.
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.

921-5. Theft deterrent system
PRIUS_OM_OM47F32E_(EE)
Double locking system
Vehicles employing this system
have labels on the window glass
of both front doors.
Turn the power switch off, have all the passengers exit the vehicle and
ensure that all the doors are closed.
Using the entry function:
Touch the sensor area on the driver’s outside door handle or front
passenger’s door handle (if equipped with the sensor) twice within 5
seconds.
Using the wireless remote control:
Press twice within 5 seconds.
Using the entry function: Hold the outside door handle on the driver
side or front passenger side (if equipped with the sensor).
Using the wireless remote control: Press .
: If equipped
Unauthorized access to the vehicle is prevented by disabling the
door unlocking function from both the interior and exterior of
the vehicle.
Setting the double locking system
Canceling the double locking system
WARNING
■ Double locking system precaution
Never activate the double locking system when there are people in the vehi-
cle, because all the doors cannot be opened from inside the vehicle.

93
1
1-5. Theft deterrent system
PRIUS_OM_OM47F32E_(EE)
For safety and security
Alar m
The alarm uses light and sound to give an alert when an intrusion is
detected.
The alarm is triggered in the following situations when the alarm is
set:
● A locked door or back door is unlocked or opened in any way other
than using the entry function or wireless remote control. (The doors
will lock again automatically.)
● The hood is opened.
● If equipped, the intrusion sensor detects something moving inside
the vehicle. (An intruder gets in the vehicle.)
Close the doors and hood, and
lock all the doors using the entry
function or wireless remote con-
trol. The system will be set auto-
matically after 30 seconds.
The indicator light changes from
being on to flashing when the sys-
tem is set.
Do one of the following to deactivate or stop the alarm.
● Unlock the doors using the entry function or wireless remote con-
trol.
● Start the hybrid system. (The alarm will be deactivated or stopped
after a few seconds.)
: If equipped
The alarm
Setting the alarm system
Deactivating or stopping the alarm

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)

951-5. Theft deterrent system
1
PRIUS_OM_OM47F32E_(EE)
For safety and security
■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.

961-5. Theft deterrent system
PRIUS_OM_OM47F32E_(EE)
The intrusion sensor detects intruders or movement in the vehicle.
This system is designed to deter and prevent vehicle theft but does
not guarantee absolute security against all intrusions.
■Setting the intrusion sensor
The intrusion sensor will be set automatically when the alarm is set.
( P. 9 3 )
■Canceling the intrusion sensor
If you are leaving pets or other moving things inside the vehicle,
make sure to disable the intrusion sensor before setting the alarm,
as they will respond to movement inside the vehicle.
Turn the power switch off.
A message is displayed on the multi-information display for approxi-
mately 4 seconds asking if you wish to cancel the intrusion sensor.
Press or of the
meter control switch on the
steering wheel, select “Yes”
and then press .
If an operation is not performed
for approximately 5 seconds,
the message will be automati-
cally extinguished and the intru-
sion sensor will not be canceled.
The intrusion sensor will revert to on each time the power switch is
turned to ON mode.
Intrusion sensor (if equipped)
1
2

971-5. Theft deterrent system
1
PRIUS_OM_OM47F32E_(EE)
For safety and security
■When the message asking if you wish to cancel the intrusion sensor is
not displayed
The message may not be displayed if other message is displayed. In this
case, turn the power switch to ON mode, follow the instructions on the display
and turn the power switch off again.
■ Canceling and automatic re-enabling of the intrusion sensor
● The alarm will still be set even when the intrusion sensor is canceled.
● After the intrusion sensor is canceled, pressing the power switch or unlock-
ing the doors using the entry function or wireless remote control will re-
enable the intrusion sensor.
● The intrusion sensor will automatically be re-enabled when the alarm sys-
tem is deactivated.
■ Intrusion sensor detection considerations
The sensor may trigger the alar m in the following situations:
• The movement of people outside the vehicle
● People or pets are in the vehicle.
● A side window or moon roof (if
equipped) is open.
In this case, the sensor may detect the
following:
• Wind or the movement of objects
such as leaves and insects inside the
vehicle
• Ultrasonic waves emitted from
devices such as the intrusion sensors
of other vehicles
● Unstable items, such as dangling acces-
sories or clothes hanging on the coat
hooks, are in the vehicle.

981-5. Theft deterrent system
PRIUS_OM_OM47F32E_(EE)
● The vehicle is inside an automatic or high-pressure car wash.
● The vehicle experiences impacts, such as hail, lightning strikes, and other
kinds of repeated impacts or vibrations.
● The vehicle is parked in a place where
extreme vibrations or noises occur, such
as in a parking garage.
● Ice or snow is removed from the vehicle,
causing the vehicle to receive repeated
impacts or vibrations.
NOTICE
■ To ensure the intrusion sensor functions correctly
● Installing accessories other than genuine Toyota parts or leaving objects
between the driver’s seat and front passenger’s seat may reduce the
detection performance.
● To ensure that the sensors operate
properly, do not touch or cover them.
● Do not spray air fresheners or other
products directly into the sensor holes.