2012 TOYOTA PRIUS V key battery

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PRIUS v_U (OM47784U)
4-1. Maintenance and careCleaning and protecting the vehicle exterior............ 348
Cleaning and protecting the vehicle interior............. 352
4-2. Maintenance Maintenance requirements ..................... 355
General maintenance.......... 358
Emission inspection and maintenance (I/M)
programs........................... 362
4-3. Do-it-yourself maintenance Do-it-yourself service precautions ....................... 363
Hood ................................... 366
Positioning a floor jack ........ 369
Engine compartment ........... 372
12-volt battery ..................... 384
Tires .................................... 389
Tire inflation pressure ......... 398
Wheels ................................ 402
Air conditioning filter............ 405
Electronic key battery.......... 408
Checking and replacing fuses ................................. 410
Light bulbs........................... 421 5-1. Essential information
Emergency flashers............ 436
If your vehicle needs to be towed................................ 437
If you think something is wrong ............................... 443
5-2. Steps to take in an emergency
If a warning light turns on or a warning buzzer
sounds.............................. 444
If you have a flat tire ........... 462
If the hybrid system will not start ............................ 476
If you lose your keys........... 478
If the electronic key does not operate properly ......... 479
If the 12-volt battery is discharged........................ 481
If your vehicle overheats .... 487
If the vehicle becomes stuck ................................. 491
If your vehicle has to be stopped in an
emergency ....................... 493
4Maintenance and care5When trouble arises

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PRIUS v_U (OM47784U)
1-2. Key information
Keys
Using the mechanical keyTo take out the mechanical key,
push the release button and take
the key out.
After using the mechanical key,
store it in the electronic key. Carry
the mechanical key together with
the electronic key. If the electronic
key battery is depleted or the
entry function does not operate
properly, you will need the
mechanical key. (P. 479)
The following keys are prov ided with the vehicle.
Electronic keys
• Operating the smart key
system ( P. 57)
• Operating the wireless
remote control function
(P. 72)
Mechanical keys
Key number plate

64 1-3. Opening, closing and locking the doors
PRIUS v_U (OM47784U)
■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.
■ Battery-saving function
The battery-saving function will be activated in order to prevent the elec-
tronic 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
Interior alarm
pings continu-
ously The “POWER” switch was
turned to ACCESSORY
mode while the driver’s
door was open (or the
driver’s door was opened
while the “POWER” switch
was in ACCESSORY
mode)
Close the driver’s
door, or turn the
“POWER” switch off
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

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1-3. Opening, closing and locking the doors
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Before driving
PRIUS v_U (OM47784U)
■
Conditions aff ecting 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
properly. (Ways of coping: P. 479)
● 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 electri-
cal noise
● When carrying a portable radio, ce llular 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

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1-3. Opening, closing and locking the doors
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Before driving
PRIUS v_U (OM47784U)
■
If the smart key system does not operate properly
● Locking and unlocking the doors: Use the mechanical key. ( P. 479)
● Starting the hybrid system: P. 480
■ 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. 408)
• 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
• Recharging cellular phones or cordless phones
• Glass top ranges
• Table lamps
■ When the electronic key battery is fully depleted
 P. 408
■ Customization
Settings (e.g. smart key system) can be changed.
(Customizable features P. 525)

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1-3. Opening, closing and locking the doors
1
Before driving
PRIUS v_U (OM47784U)
■
Panic mode
■ Security feature
 P. 6 4
■ Conditions aff ecting operation
 P. 6 5
■ If the wireless remote cont rol does not operate properly
Locking and unlocking the doors: Use the mechanical key. ( P. 479)
■ Electronic key battery depletion
 P. 6 9
■ When the electronic key battery is fully depleted
 P. 408
■ Customization
Settings (e.g. door unlocking function) can be changed.
(Customizable features P. 525)
When is pressed for longer than
about one second, an alarm will sound
intermittently and the vehicle lights will
flash to deter any person from trying to
break into or damage your vehicle.
To stop the alarm, press any button on
the electronic key.

178 2-1. Driving procedures
PRIUS v_U (OM47784U)
■Auto power off function
If the vehicle is left in ACCESSORY mode for more than 20 minutes or ON
mode (the hybrid system is not operating) for more than an hour with the
shift position in P, the “POWER” switch will automatically turn off. However,
this function cannot entirely prevent the 12-volt battery from discharging. 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. 3 4
■ Electronic key battery depletion
 P. 6 9
■ When the ambient temperature is lo w, such as during winter driving
conditions
The “READY” indicator may flash for a long time when the hybrid system is
starting. Driving will become possible once the “READY” indicator has illumi-
nated. Wait until the “READY” indicator has illuminated.
■ Conditions affecting operation
 P. 6 5
■ Notes for the entry function
 P. 6 6
■ If the hybrid system does not start
The immobilizer system may not have been deactivated. ( P. 119)

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2-1. Driving procedures
PRIUS v_U (OM47784U)
2
When driving
■
When the “POWER” switch indicator flashes in amber
The system may be malfunctioning. Have the vehicle inspected by your
Toyota dealer immediately.
■ If the “READY” indicator does not come on
If the “READY” indicator does not come on when you press the “POWER”
switch with the shift position in P and the brake pedal depressed, contact
your Toyota dealer immediately.
■ If the hybrid system is malfunctioning
 P. 445
■ If the electronic key battery is depleted
 P. 408
■ 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.
■ Automatically P position selection function
 P. 190