Page 153 of 496

1533-2. Opening, closing and locking the doors
3
Operation of each component
PRIUS +_OM_OM47888E_(EE)■
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.
Interior alarm
pings repeatedly
The power switch was
turned to ACCESSORY
mode while the driver’s door
was open (The driver’s door
was opened when the
power switch was in
ACCESSORY mode).
Turn the power switch
off and close the
driver’s door.
The driver’s door is open
with the shift position in R.
Close the driver’s door,
shift the shift position to
P, or turn the power
switch off.
AlarmSituationCorrection procedure
Page 154 of 496

1543-2. Opening, closing and locking the doors
PRIUS +_OM_OM47888E_(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. 437)
● 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 carrying a portable radio, cellular phone, cordless phone or other
wireless communication devices
● 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
• 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
Page 155 of 496

1553-2. Opening, closing and locking the doors
3
Operation of each component
PRIUS +_OM_OM47888E_(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 w hen the doors are locked or unlocked.
• The electronic key is near the ground or in a high place, or too close to the rear bumper center when the back door is opened.
• The electronic key is on the instrument panel, luggage room, 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.
● If the door handle becomes wet while the electronic key is within the effec-
tive range, the door may unlock and lock repeatedly. Place the key in a posi-
tion 2 m (6 ft.) or more separate from the vehicle while the vehicle is being
washed. (Take care to ensure that the key is not stolen.)
● If the electronic key is inside the vehicle and a door handle becomes wet
during a car wash, a message may be shown on the multi-information dis-
play (if equipped) and a buzzer will sound outside the vehicle. To turn off the
alarm, lock all the doors.
● The lock sensor may not work properly if it comes into contact with ice,
snow, mud, etc. Clean the lock sensor and attempt to operate it again, or
use the lock sensor on the lower part of the door handle.
Page 156 of 496

1563-2. Opening, closing and locking the doors
PRIUS +_OM_OM47888E_(EE)●
A sudden approach to the effective range or door handle may prevent the
doors from being unlocked. In this case, return the door handle to the origi-
nal position and check that the doors unlock before pulling the door handle
again.
● If there is another electronic key in the detection area, it may take slightly
longer to unlock the doors after the door handle is gripped.
● Fingernails may scrape against the door during operation of the door han-
dle. Be careful not to injure fingernails or damage the surface of the door.
■ When the vehicle is not driven for extended periods
●To prevent theft of the vehicle, do not leave the electronic key within 2 m
(6 ft.) of the vehicle.
● The smart entry & start system can be deactivated in advance. ( →P. 465)
■ To operate the system properly
Make sure to carry the electronic key when operating the system. Do not get
the electronic key too close to the vehicle when operating the system from the
outside of the vehicle.
Depending on the position and holding condition of the electronic key, the key
may not be detected correctly and the system may not operate properly. (The
alarm may go off accidentally, or the door lock prevention may not operate.)
■ If the smart entry & start system does not operate properly
●Locking and unlocking the doors: Use the mechanical key. ( →P. 437)
● Starting the hybrid system: →P. 437
■ Customization
Settings (e.g. smart entry & start system) can be changed.
(Customizable features: →P. 465)
■ If the smart entry & start system h as been deactivated in a customized
setting
● Unlocking and locking the doors:
Use the wireless remote control or mechanical key. ( →P. 142, 437)
● Starting the hybrid system and changing power switch modes: →P. 437
● Stopping the hybrid system: →P. 202
Page 157 of 496
1573-2. Opening, closing and locking the doors
3
Operation of each component
PRIUS +_OM_OM47888E_(EE)■
Certification for the smart entry & start system
Page 158 of 496
1583-2. Opening, closing and locking the doors
PRIUS +_OM_OM47888E_(EE)
Page 159 of 496
1593-2. Opening, closing and locking the doors
3
Operation of each component
PRIUS +_OM_OM47888E_(EE)
Page 160 of 496
1603-2. Opening, closing and locking the doors
PRIUS +_OM_OM47888E_(EE)