key battery TOYOTA PRIUS C 2017 NHP10 / 1.G Owners Manual

TABLE OF CONTENTS6
PRIUS c_U (OM52J11U)7-1. Maintenance and care
Cleaning and protecting the vehicle exterior .......... 400
Cleaning and protecting the vehicle interior ........... 403
7-2. Maintenance Maintenance requirements ................... 406
General maintenance ........ 409
Emission inspection and maintenance
(I/M) programs ................ 412
7-3. Do-it-yourself maintenance
Do-it-yourself service precautions ..................... 413
Hood.................................. 416
Positioning a floor jack ...... 418
Engine compartment ......... 419
12-volt battery ................... 428
Tires .................................. 432
Tire inflation pressure........ 441
Wheels .............................. 444
Air conditioning filter .......... 446
Wireless remote control/ electronic key battery ...... 448
Checking and replacing fuses ............................... 451
Light bulbs ......................... 455 8-1. Essential information
Emergency flashers ........... 466
If your vehicle has to be stopped in an
emergency....................... 467
8-2. Steps to take in an emergency
If your vehicle needs to be towed ...................... 469
If you think something is wrong ........................... 476
If a warning light turns on or a warning buzzer
sounds ............................. 477
If a warning message is displayed...................... 486
If you have a flat tire .......... 501
If the hybrid system will not start ..................... 514
If the electronic key does not operate
properly ........................... 516
If the vehicle 12-volt battery is discharged ....... 518
If your vehicle overheats......................... 524
If the vehicle becomes stuck ................................ 528
7Maintenance and care8When trouble arises

1022. Instrument cluster
PRIUS c_U (OM52J11U)
Cruising range
Displays the estimated maximum distance that can be driven
with the quantity of fuel remaining.
• This distance is computed based on your average fuel consumption.As a result, the actual distance that can be driven may differ from that
displayed.
• When only a small amount of fuel is added to the tank, the display
may not be updated.
Vehicles without a smart key system:
when refueling, turn the engine switch to the “LOCK” position. If the
vehicle is refueled without turning the engine switch to the “LOCK”
position, the display may not be updated.
Vehicles with a smart key system:
when refueling, turn the “POWER” switch off. If the vehicle is refueled
without turning the “POWER” switch off, the display may not be
updated.
Outside temperature
→ P. 3 9 1
■“ECO Score”
Hybrid battery (traction bat-
tery) charge level display
EV drive indicator lamp
Illuminates when only the elec-
tric motor is used to drive the
vehicle
Hybrid System Indicator
Hybrid System Indicator rep-
resents the hybrid system power
output and regenerative
charging. ( →P. 104)
Eco driving conditions display
Driving conditions are displayed in 5 stages and divided into 3 catego-
ries: start, cruise and stop. Every time the vehicle is stopped, the score
is displayed. (Every time the vehicle is accelerated the score that was
last displayed is reset. Accumulative scores are not calculated.)
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5
1
2
3
4

1233-1. Key information
3
Operation of each component
PRIUS c_U (OM52J11U)■
Key battery depletion
Vehicles without a smart key system
If the wireless remote control function does not operate, the battery may be
depleted. Replace the battery when necessary. (→ P. 448)
Vehicles with a smart key system
● The standard battery life is 1 to 2 years.
● If the battery becomes low, an alarm will sound in the cabin when the hybrid
system stops. ( →P. 499)
● 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. 448)
• 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 appl iances 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
■ Replacing the battery
→P. 448
■ Confirmation of the registered key number (vehicles with a smart key
system)
The number of keys already registered to the vehicle can be confirmed. Ask
your Toyota dealer for details.
■ If a wrong key is used (vehicles with a smart key system)
The key cylinder rotates freely to isolate inside mechanism.
■ Customization that can be co nfigured at Toyota dealer
Settings (e.g. wireless remote control system) can be changed.
(Customizable features →P. 556)

1243-1. Key information
PRIUS c_U (OM52J11U)■
Certification for wireless remote control
For vehicles sold in the U.S.A. and Puerto rico
FCC ID: HYQ23AAC
FCC ID: HYQ12BDM
NOTE:
This device complies with part 15 of the FCC Rules. Operation is subject to
the following two conditions: (1) This device may not cause harmful interfer-
ence, and (2) this device must accept any interference received, including
interference that may cause undesired operation.
FCC WARNING:
Changes or modifications not expressly approved by the party responsible for
compliance could void the user’s authority to operate the equipment.

The FCC ID/IC Certification number is affixed inside the equipment. You can
find the ID/number when replacing the battery.
For vehicles sold in Canada
NOTE:
This device complies with Industry Canada licence-exempt RSS standard(s).
Operation is subject to the following two conditions: (1) this device may not
cause interference, and (2) this device must accept any interference, includ-
ing interference that may cause undesired operation of the device.

The FCC ID/IC Certification number is affixed inside the equipment. You can
find the ID/number when replacing the battery.

1283-2. Opening, closing and locking the doors
PRIUS c_U (OM52J11U)
■Operation signals
Vehicles without a smart key system
The emergency flashers flash to indicate that the doors have been locked/
unlocked. (Locked: once; Unlocked: twice)
Vehicles with a smart key system
A buzzer sounds and the emergency flashers flash to indicate that the doors
have been locked/unlocked. (Locked: once; Unlocked: twice)
■ 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. (How-
ever, depending on the location of the electronic key, the key may be
detected as being in the vehicle. In this case, vehicle may be unlocked.\
)
■ When the door cannot be locked by th e lock sensor on the surface of the
door handle
■ Door lock buzzer (vehicles with a smart key system)
If an attempt to lock the doors is made when a door is not fully closed, a
buzzer sounds continuously. 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. 516)
Replace the key battery with a new one if it is depleted. ( →P. 448)
Use your palm to touch the lock sensor.

1333-2. Opening, closing and locking the doors
3
Operation of each component
PRIUS c_U (OM52J11U)
■Switching the door unlock functi on (vehicles with a smart key system)
It is possible to set which doors the entry function unlocks using the wireless
remote control.
Turn the “POWER” switch off.
When the indicator light on the key surface is not on, press and hold
or for about 5 seconds while pressing and holding .
The setting changes each time an operation is performed, as shown below.
(When changing the setting continuously, release the buttons, wait for at least
5 seconds, and repeat step 2.)
■ Conditions affecting the operation of the smart key system or wireless
remote control
Vehicles without a smart key system
The wireless remote control function may not operate normally in the follow-
ing situations:
● When the wireless 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, cellul ar phone or other wireless communi-
cation device
● When the wireless key is in contact with, or is covered by a metallic object
● When other wireless keys (that emits radio waves) are being used nearby
● If window tint with a metallic content or metallic objects are attached to the
rear window
Vehicles with a smart key system
→P. 142
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Unlocking doorsBeep
Holding the driver's door handle
unlocks only the driver's door.
Exterior: Beeps 3 times
Interior: Beeps once
Holding the front passenger’s door
handle unlocks all the doors.
Holding either front door handle
unlocks all the doors.Exterior: Beeps twice
Interior: Beeps once

1413-2. Opening, closing and locking the doors
3
Operation of each component
PRIUS c_U (OM52J11U)■
Alarms and warning indicators
A combination of exterior and interior alarms as well as warning messages
shown on the multi-information display is used to prevent theft of the vehicle
and accidents resulting from erroneous operation. Take appropriate mea-
sures in response to any warning message on the multi-information display.
(→P. 487)
The following table describes circumstances and correction procedures when
only alarms are sounded.
■ 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 of the 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.
■ Electronic key battery-saving function
When battery-saving mode is set, battery depletion is minimized by stopping
the electronic key from receiving radio waves.
AlarmSituationCorrection procedure
Exterior alarm
sounds once for 5
seconds An attempt was made to
lock the vehicle while a door
was open. Close all of the doors
and lock the doors
again.
Interior alarm
sounds continu-
ously The “POWER” switch was
turned to ACCESSORY
mode while the driver's door
was open (or 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.
Press twice while pressing and
holding . Confirm that the elec-
tronic 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
electronic key buttons.

1423-2. Opening, closing and locking the doors
PRIUS c_U (OM52J11U)■
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. 516)
● 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

1433-2. Opening, closing and locking the doors
3
Operation of each component
PRIUS c_U (OM52J11U)■
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. 141)

1904-2. Driving procedures
PRIUS c_U (OM52J11U)
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 7
■ Electronic key battery depletion
→P. 123
■ 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. 142
When stopping the hybrid system with the shift lever in a posi-
tion other than P
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