2016 TOYOTA PRIUS key battery

TABLE OF CONTENTS6
PRIUS_OM_OM47A29U_(U)6-4. Using the other interior
features
Other interior features ....... 542 • Sun visors ..................... 542
• Vanity mirrors................ 542
• Power outlets ................ 543
• Wireless charger ........... 544
• Armrest ......................... 552
• Coat hooks.................... 552
• Assist grips ................... 553
Garage door opener .......... 554
Safety Connect.................. 561 7-1. Maintenance and care
Cleaning and protecting the vehicle exterior .......... 568
Cleaning and protecting the vehicle interior ........... 574
7-2. Maintenance Maintenance requirements ................... 578
General maintenance ........ 581
Emission inspection and maintenance (I/M)
programs ......................... 584
7-3. Do-it-yourself maintenance Do-it-yourself service precautions ...................... 585
Hood .................................. 588
Positioning a floor jack....... 590
Engine compartment ......... 591
Tires................................... 605
Tire inflation pressure ........ 615
Wheels............................... 618
Air conditioning filter .......... 621
Wiper rubber replacement..................... 624
Electronic key battery ........ 628
Checking and replacing fuses ................................ 631
Headlight aim..................... 634
Light bulbs ......................... 636
7Maintenance and care

7
1
9 8
7
6 4 3
2
PRIUS_OM_OM47A29U_(U)
10
5
8-1. Essential informationEmergency flashers .......... 646
If your vehicle has to be stopped in an
emergency ...................... 647
8-2. Steps to take in an emergency
If your vehicle needs to be towed ......................... 648
If you think something is wrong .............................. 654
If a warning light turns on or a warning buzzer
sounds ............................ 655
If a warning message is displayed ......................... 665
If you have a flat tire (vehicles with
spare tire) ........................ 673
If you have a flat tire (vehicles without
spare tire) ........................ 687
If the hybrid system will not start ........................... 706
If the electronic key does not operate properly ........ 708
If the 12-volt battery is discharged ...................... 711
If your vehicle overheats ... 717
If the vehicle becomes stuck................................ 722 9-1. Specifications
Maintenance data (fuel, oil level, etc.) .......... 726
Fuel information ................. 737
Tire information.................. 740
9-2. Customization Customizable features ....... 752
9-3. Initialization Items to initialize ................ 760
Reporting safety defects for U.S. owners ........................ 762
Seat belt instructions for Canadian owners
(in French)................................ 763
SRS airbag instructions for Canadian owners
(in French)................................ 765
Headlight aim instructions for Canadian owners
(in French)................................ 774
What to do if... (Troubleshooting) ..................... 778
Alphabetical index ...................... 782
8When trouble arises9Vehicle specifications
10For owners
Index
For vehicles with Entune Premiu m Audio with Navigation, refer to
the “NAVIGATION SYSTEM OWNER’S MANUAL” for information
regarding the equipment listed below.
• Navigation system
• Hands-free system (for cellular phone)• Audio/visual system

162
PRIUS_OM_OM47A29U_(U)
3-1. Key information
■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. 628)
• The smart key 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 3 ft.
(1 m) of the following electrical appliances that produce a magnetic field:
•TVs
• Personal computers
• Cellular phones, cordless phones and battery chargers
• Table lamps
• Induction cookers

PRIUS_OM_OM47A29U_(U)
1633-1. Key information
3
Operation of each component
■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. 628)
■ Replacing the battery
P. 628
■ Confirmation of the registered key number
The number of keys already registered to the vehicle can be confirmed. Ask
your Toyota dealer.
■ If “A New Key has been Registered Contact Your Dealer for Details” is
displayed on the mult i-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 your Toyota dealer 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.

166
PRIUS_OM_OM47A29U_(U)
3-2. Opening, closing and locking the doors
◆Wireless remote controlLocks all the doors
Check that the door is securely
locked.
Unlocks all the doors
Pressing the button unlocks the
driver’s door. Pressing the but-
ton again within 3 seconds
unlocks the other doors.
Press and hold to open the side
windows and moon roof (if
equipped).
*
*
: This setting must be customized at your Toyota dealer.
■ Operation signals
Doors:
A buzzer sounds and the emergency flashers flash to indicate that the doors
have been locked/unlocked. (Locked: Once; Unlocked: Twice)
Side windows and moon roof (if equipped):
A buzzer sounds to indicate that the side windows and moon roof are operat-
ing.
■ Security feature
If a door is not opened within approximately 60 seconds after the vehicle is
unlocked, the security feature automatically locks the vehicle again.
■ When the door cannot be locked by th e 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.
■ If the smart key system or the wireless remote control does not operate
properly
●Use the mechanical key to lock and unlock the doors. ( P. 708)
● Replace the key battery with a new one if it is depleted. ( P. 628)
1
2
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.

PRIUS_OM_OM47A29U_(U)
1773-2. Opening, closing and locking the doors
3
Operation of each component
■Alarms and warning messages
An alarm sounds and warning message displays shown on the multi-informa-
tion display are used to protect against unexpected accidents or theft of the
vehicle resulting from erroneous operation. When a warning message is dis-
played, take appropriate measures based on the displayed message.
When only an alarm sounds, circumstances and correction procedures are as
follows.
■ When “Smart Key System malfunct ion See owner’s manual” is dis-
played on the multi-information display
The system may be malfunctioning. Have the vehicle inspected by your
Toyota dealer 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 key system may take some time to
unlock the doors.
• The electronic key has been left in an area of approximately 6 ft. (2 m) of
the outside of the vehicle for 10 minutes or longer.
• The smart key system has not been used for 5 days or longer.
● If the smart key 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 control or the
mechanical key, to unlock the doors.
AlarmSituationCorrection procedure
Exterior alarm
sounds once for 5
secondsAn attempt was made to
lock the vehicle while a door
was open.Close all of the doors
and lock the doors
again.
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.

178
PRIUS_OM_OM47A29U_(U)
3-2. Opening, closing and locking 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.
■ Conditions affecting operation
The smart key system, wireless remote control and immobilizer system use
weak radio waves. In the following situations, the communication between\
the electronic key and the vehicle may be affected, preventing the smart key
system, wireless remote control and immobilizer system from operating prop-
erly. (Ways of coping: P. 708)
● 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
Press twice while pressing and
holding . Confirm that the electronic
key indicator flashes 4 times.
While the battery-saving mode is set, the
smart key system cannot be used. To
cancel the function, press any of the elec-
tronic key buttons.

PRIUS_OM_OM47A29U_(U)
1793-2. Opening, closing and locking the doors
3
Operation of each component
■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
60 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.
● When the lock operation is performed using the lock sensor, recognition sig-
nals 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 6 ft. (2 m) 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 key sys-
tem. ( P. 178)
● 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 and a buzzer will sound outside the vehicle. To turn off the alarm, lock
all the doors.