change key battery TOYOTA PRIUS V 2012 Owners Manual (in English)

66 1-3. Opening, closing and locking the doors
PRIUS v_U (OM47674U)
■If the smart key system does not operate properly
● Locking and unlocking the doors: Use the mechanical key. ( P. 477)
● Starting the hybrid system: P. 478
■ 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 when the
hybrid system stops. ( P. 60)
● 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. 406)
• 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. 406
■ Customization
Settings (e.g. smart key system) can be changed.
(Customizable features P. 523)

70 1-3. Opening, closing and locking the doors
PRIUS v_U (OM47674U)
■Panic mode
■ Security feature
 P. 6 1
■ Conditions affecting operation
 P. 6 2
■ If the wireless remote cont rol does not operate properly
Locking and unlocking the doors: Use the mechanical key. ( P. 477)
■ Electronic key battery depletion
 P. 6 6
■ When the electronic key battery is fully depleted
 P. 406
■ Customization
Settings (e.g. door unlocking function) can be changed.
(Customizable features P. 523)
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.

177
2-1. Driving procedures
PRIUS v_U (OM47674U)
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. 443
■ If the electronic key battery is depleted
 P. 406
■ 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. 188

302 3-3. Using the interior lights
PRIUS v_U (OM47674U)
■Illuminated entry system
The lights automatically 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 opened/closed.
■ To prevent 12-volt battery discharge
If the interior lights remain on when the door is not fully closed and the inte-
rior light switch (door position on/off) is on, the lights will go off automatically
after 20 minutes.
■ Customization
Settings (e.g. the time elapsed before the lights turn off) can be changed.
(Customizable features P. 523)
Personal lights

478 5-2. Steps to take in an emergency
PRIUS v_U (OM47674U)
Changing “POWER” switch modes and starting the hybrid
systemDepress the brake pedal. Touch the Toyota emblem side of
the electronic key to the
“POWER” switch.
If any of the doors is opened or
closed while the key is being
touched to the switch, an alarm
will sound to indicate that the start
function cannot detect the elec-
tronic key.
Perform the following operations.
To change “POWER” switch modes: Within 10 seconds of the
buzzer sounding, release the brake pedal and press the
“POWER” switch. Modes can be changed each time the
switch is pressed. ( P. 175)
To start the hybrid system: Press the “POWER” switch within
10 seconds of the buzzer soun ding, keeping the brake pedal
depressed.
In the event that the hybrid system still cannot be operated, contact
your Toyota dealer.
STEP 1
STEP 2
■ Stopping the hybrid system
Set the parking brake, shift the shift position to P and press the “POWER”
switch as you normally do when stopping the hybrid system.
■ Replacing the key battery
As the above procedure is a temporary measure, it is recommended that the
electronic key battery be replaced immediately when the battery is depleted.
(P. 406)
STEP 3