Page 77 of 580

77 1-3. Opening, closing and locking the doors
1
Before driving
PRIUS +_OM_OM47821E_(EE)
If the smart entry & start system does not operate properly
Locking and unlocking the doors: Use the mechanical key. (P. 519)
Starting the hybrid system: P. 520
Electronic key battery depletion
The standard battery life is 1 to 2 years.
As the electronic key always receives radio waves, the battery will
become depleted even if the electronic key is not used. The following
symptoms indicate that the electronic key battery may be depleted.
Replace the battery when necessary. (P. 430)
• 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.
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
• Recharging cellular phones or cordless phones
• Induction cookers
• Table lamps
When the electronic key battery is fully depleted
P. 430
Customization
Settings (e.g. smart entry & start system) can be changed.
(Customizable features P. 554)
Page 93 of 580
93 1-3. Opening, closing and locking the doors
1
Before driving
PRIUS +_OM_OM47821E_(EE)
Security feature
P. 7 2
Conditions affecting operation
P. 7 3
If the wireless remote control does not operate properly
Locking and unlocking the doors: Use the mechanical key. (P. 519)
Electronic key battery depletion
P. 7 7
When the electronic key battery is fully depleted
P. 430
Customization
Settings (e.g. door unlocking function) can be changed.
(Customizable features P. 554)
Page 95 of 580
95 1-3. Opening, closing and locking the doors
1
Before driving
PRIUS +_OM_OM47821E_(EE)
Locking the front doors from the outside without a key
Move the inside lock button to the lock position.
Close the door while pulling the door handle.
The door cannot be locked if the “POWER” switch is in ACCESSORY
or ON mode, or the electronic key is left inside the vehicle.
The key may not be detected correctly and the door may be locked.
Rear door child-protector lock
The door cannot be opened from
inside the vehicle when the lock
is set.
Unlock
Lock
These locks can be set to prevent
children from opening the rear
doors. Push down on each rear
door switch to lock both rear
doors.
STEP 1
STEP 2
Page 96 of 580

96 1-3. Opening, closing and locking the doors
PRIUS +_OM_OM47821E_(EE)
Using the mechanical key
The doors can also be locked and unlocked with the mechanical key.
(P. 519)
If a wrong key is used
The key cylinder rotates freely to isolate inside mechanism.
Customization
Settings (e.g. unlocking function using a key) can be changed.
(Customizable features P. 554)
CAUTION
To prevent an accident
Observe the following precautions while driving the vehicle.
Failure to do so may result in a door opening and an occupant falling out,
resulting in death or serious injury.
Always use a seat belt.
Ensure that all doors are properly closed.
Do not pull the inside handle of the doors while driving.
The doors may be opened and the passengers are thrown out of the vehi-
cle and it may result in serious injury or death.
Be especially careful for the front doors, as the doors may be opened even
if the inside lock buttons are in locked position.
Set the rear door child-protector locks when children are seated in the rear
seats.
When opening or closing a door
Check the surroundings of the vehicle such as whether the vehicle is on an
incline, whether there is enough space for a door to open and whether a
strong wind is blowing. When opening or closing the door, hold the door han-
dle tightly to prepare for any unpredictable movement.
Page 143 of 580
143
1
Before driving
PRIUS +_OM_OM47821E_(EE)
1-7. Theft deterrent system
Immobilizer system
System maintenance
The vehicle has a maintenance-free type immobilizer system.
Conditions affecting operation
Depending on the surrounding environment and conditions, the immobilizer
system may not operate properly. This may prevent the hybrid system from
starting. (P. 73)
The vehicle’s keys have built-in transponder chips that prevent the
hybrid system from starting if a key has not been previously regis-
tered in the vehicle’s on-board computer.
Never leave the keys inside the vehicle when you leave the vehicle.
The indicator light flashes after
the “POWER” switch has been
turned off to indicate that the
system is operating.
The indicator light stops flash-
ing after the “POWER” switch
has been turned to ACCES-
SORY or ON mode to indicate
that the system has been can-
celed.
Page 152 of 580
152 1-7. Theft deterrent system
PRIUS +_OM_OM47821E_(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 windows is 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, the back door or hood.
The 12-volt battery is recharged or
replaced when the vehicle is locked.
Page 153 of 580

153 1-7. Theft deterrent system
1
Before driving
PRIUS +_OM_OM47821E_(EE)
Alarm-operated door lock
When the alarm is operating, the doors are locked automatically to pre-
vent intruders.
Do not leave the key inside the vehicle when the alarm is operating, and
make sure the key is not inside the vehicle when recharging or replacing
the 12-volt battery.
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
unlocking the doors using the entry function or wireless remote control
will re-enable the intrusion sensor.
When the alarm system is set again, the intrusion sensor will be set.
Intrusion sensor considerations
The sensor may trigger the alarm in the following situations:
Persons or pets are in the vehicle.
A window 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 sen-
sors of other vehicles
• The movement of people outside
the vehicle
Page 171 of 580
171
1
1-8. Safety information
Before driving
PRIUS +_OM_OM47821E_(EE)
Airbag manual on-off system
Deactivating the front seat passenger airbag
Insert the mechanical key into
the cylinder and rotate to the
“OFF” position.
The “OFF” indicator turns on.
This system deactivates the front passenger airbag.
Only deactivate the airbags when using a child restraint system on
the front passenger seat.
“PASSENGER AIR BAG”
indicator
This indicator turns on when
the airbag system is “ON”.
(Only when the “POWER”
switch is in ON mode.)
Airbag manual on-off switch