2016 TOYOTA PRIUS C key battery

1403-2. Opening, closing and locking the doors
PRIUS c_U (OM52F96U)■
Conditions affecting operation
The smart key system uses 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 properly.
(Ways of coping: P. 5 1 1 )
● 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 keys (that emit radio waves) are being used nearby
● When carrying the electronic key together with the following devices that
emit radio waves
• A portable radio, cellular phone, cordless phone or other wireless com-
munication device
• 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

1413-2. Opening, closing and locking the doors
3
Operation of each component
PRIUS c_U (OM52F96U)■
Notes 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, luggage cover or floor, in
the door pockets or glove box when the hybrid system is started or
“POWER” switch modes are changed.
● Do not exit the vehicle with the electronic key placed on the instrument
panel or near the door pockets. Depending on the radio wave reception con-
ditions, 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
locked or unlocked by anyone. However, only the doors detecting the elec-
tronic key can be used to unlock the vehicle.
● Whether or not the electronic key is inside the vehicle, the hybrid system
could be started 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.)
● The lock and unlock sensors may not work properly if they come into con-
tact with ice, snow, mud, etc. Clean the sensors and attempt to operate
them again.
● 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. (Using the wireless remote control to unlock
the doors may resume the function.)
● If the door handle becomes wet while the electronic key is within the effec-
tive range, the door may lock and unlock repeatedly. In that 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 the electronic key to battery-saving mode to disable the smart key system. ( P. 139)

1884-2. Driving procedures
PRIUS c_U (OM52F96U)
If the hybrid system is stopped with the shift lever in a position other
than P, the “POWER” switch will not be turned off but instead be
turned to ACCESSORY mode. Perform the following procedure to
turn the switch off:
Check that the parking brake is set.
Shift the shift lever to P.
Check that is displayed on t he multi-information display and
then press the “POWER” switch once.
Check that on the multi-information display is off.
■ Auto power off function
When the shift lever is in P, if the vehicle is left in ACCESSORY or ON mode
with the hybrid system not operating for more than 20 minutes (ACCESSORY
mode) or one hour (ON mode), the “POWER” switch will automatically turn
off. However, this function cannot entirely prevent 12-volt battery discharge.
Do not leave the vehicle with the “POWER” switch in ACCESSORY or ON
mode for long periods of time when the hybrid system is not operating.
■ Sounds and vibrations specific to a hybrid vehicle
P. 7 5
■ Electronic key battery depletion
P. 121
■ When the ambient temperature is low, such as during winter driving con-
ditions
When starting the hybrid system, the flashing time of the “READY” indicator
may be long. Leave the vehicle as it is until the “READY” indicator is steady
on, as steady means the vehicle is able to move.
■ Conditions affecting operation
P. 140
When stopping the hybrid system with the shift lever in a posi-
tion other than P
1
2
3
4

1904-2. Driving procedures
PRIUS c_U (OM52F96U)■
If the “READY” indicator does not come on
In the event that the “READY” indicator does not come on even after perform-
ing the proper procedures for starting the vehicle, contact your Toyota dealer
immediately.
■ If the hybrid system is malfunctioning
P. 483
■ If the electronic key battery is depleted
P. 444
■ Operation of the “POWER” switch
●When operating the “POWER” switch, one short, firm press is enough. If the
switch is pressed improperly, the hybrid system may not start or the
“POWER” switch mode may not change. It is not necessary to press and
hold the switch.
● If attempting to restart the hybrid system immediately after turning the
“POWER” switch off, the hybrid system may not start in some cases. After
turning the “POWER” switch off, please wait a few seconds before restarting
the hybrid system.
■ If the smart key system has been deactivated in a customized setting
P. 5 1 1

2044-3. Operating the lights and wipers
PRIUS c_U (OM52F96U)■
Light reminder buzzer
Vehicles without a smart key system
A buzzer sounds when the engine switch is turned to the “LOCK” or “ACC”
position and the driver's door is opened while the lights are turned on.
Vehicles with a smart key system
A buzzer sounds when the “POWER” switch is turned off or turned to
ACCESSORY mode and the driver's door is opened while the lights are
turned on.
■ 12-volt battery-saving function
In the following conditions, the remaining lights will go off automatically after
20 minutes in order to prevent the vehicle battery from being discharged:
●The headlights and/or tail lights are on.
● The engine switch is turned to the “ACC” or “LOCK” position (vehicles with-
out a smart key system) or the “POWER” switch is turned to ACCESSORY
mode or turned off (vehicles with a smart key system).
This function will be canceled in any of the following situations:
● When the engine switch is turned to the “ON” position (vehicles without a
smart key system) or the “POWER” swit ch is turned to ON mode (vehicles
with a smart key system).
● When the light switch is operated.
● When the door is opened or closed.
■ Customization that can be co nfigured at Toyota dealer
Setting (e.g. daytime running light system) can be changed.
(Customizable features: P. 550)
NOTICE
■To prevent 12-volt battery discharge
Do not leave the lights on longer than necessary when the hybrid system is
off.

3816-2. Using the interior lights
6
Interior features
PRIUS c_U (OM52F96U)
■Illuminated entry system
Vehicles without a smart key system
When the interior lights switch is in the door position, the interior lights auto-
matically turn on/off according to the engine switch position, whether the
doors are locked/unlocked, and whether the doors are open/closed.
Vehicles with a smart key system
When the interior lights switch is in the door position, the interior lights auto-
matically turn on/off according to “POWER” switch mode, the presence of the
electronic key, whether the doors are locked/unlocked, and whether the doors
are open/closed.
■ To prevent 12-volt battery discharge
Vehicles without a smart key system
If the interior lights, personal lights or luggage compartment light remain on
when the engine switch is “LOCK” position, the lights will go off automatically
after 20 minutes.
Vehicles with a smart key system
If the interior lights, personal lights or luggage compartment light remain on
when the “POWER” switch is off, the lights will go off automatically after 20
minutes.
■ Customization that can be co nfigured at Toyota dealer
Settings (e.g. the time elapsed before lights turn off) can be changed.
(Customizable features P. 550)
NOTICE
■To prevent 12-volt battery discharge
Do not leave the lights on longer than necessary when the hybrid system is
off.

3896-4. Other interior features
6
Interior features
PRIUS c_U (OM52F96U)
Please use as a power supply for electronic goods that use less than
12 VDC/10 A (power consumption of 120 W).
Open the lid.
■ The power outlet can be used when
Vehicles without a smart key system
The engine switch is in the “ACC” or “ON” position.
Vehicles with a smart key system
The “POWER” switch is in ACCESSORY or ON mode.
Power outlet
NOTICE
● To avoid damaging the power outlet, close the power outlet lid when the
power outlet is not in use. Foreign objects or liquids that enter the power
outlet may cause a short circuit.
● To prevent battery discharge, do not use the power outlet longer than nec-
essary when the hybrid system is off.

395
7Maintenance and care
PRIUS c_U (OM52F96U)7-1. Maintenance and care
Cleaning and protecting the vehicle exterior .......... 396
Cleaning and protecting the vehicle interior ........... 399
7-2. Maintenance Maintenance requirements ................... 402
General maintenance........ 405
Emission inspection and maintenance (I/M)
programs ......................... 408
7-3. Do-it-yourself maintenance
Do-it-yourself service precautions ..................... 409
Hood ................................. 412
Positioning a floor jack ...... 414
Engine compartment ......... 415
12-volt battery ................... 424
Tires .................................. 428
Tire inflation pressure ....... 437
Wheels .............................. 440
Air conditioning filter.......... 442
Wireless remote control/ electronic key battery ...... 444
Checking and replacing fuses ............................... 447
Light bulbs......................... 451