2012 TOYOTA PRIUS PLUS change key battery

77 1-3. Opening, closing and locking the doors
1
Before driving
PRIUS +_OM_OM47821E_(EE)
If the smart entry & start system does not operate properly
Locking and unlocking the doors: Use the mechanical key. (P. 519)
Starting the hybrid system: P. 520
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. 430)
• The smart entry & start 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 1 m
(3 ft.) 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
• Induction cookers
• Table lamps
When the electronic key battery is fully depleted
P. 430
Customization
Settings (e.g. smart entry & start system) can be changed.
(Customizable features P. 554)

93 1-3. Opening, closing and locking the doors
1
Before driving
PRIUS +_OM_OM47821E_(EE)
Security feature
P. 7 2
Conditions affecting operation
P. 7 3
If the wireless remote control does not operate properly
Locking and unlocking the doors: Use the mechanical key. (P. 519)
Electronic key battery depletion
P. 7 7
When the electronic key battery is fully depleted
P. 430
Customization
Settings (e.g. door unlocking function) can be changed.
(Customizable features P. 554)

218 2-1. Driving procedures
PRIUS +_OM_OM47821E_(EE)
When the “POWER” switch indicator flashes in amber
The system may be malfunctioning. Have the vehicle inspected by any
authorized Toyota dealer or repairer, or another duly qualified and equipped
professional 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
any authorized Toyota dealer or repairer, or another duly qualified and
equipped professional immediately.
If the hybrid system is malfunctioning
P. 470
If the electronic key battery is depleted
P. 430
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. 229

350 3-3. Using the interior lights
PRIUS +_OM_OM47821E_(EE)
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. 554)
Personal lights

5
521 5-2. Steps to take in an emergency
When trouble arises
PRIUS +_OM_OM47821E_(EE)
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. 430)
Changing “POWER” switch modes
Within 10 seconds of the buzzer sounding, release the brake pedal and
press the “POWER” switch.
The hybrid system does not start and modes will be changed each time the
switch is pressed. (P. 216)