2012 TOYOTA PRIUS PLUS key battery

5When trouble arises
459
PRIUS +_OM_OM47821E_(EE)
5-1. Essential information
Emergency flashers .......... 460
If your vehicle needs
to be towed ..................... 461
If you think something is
wrong .............................. 468
5-2. Steps to take
in an emergency
If a warning light turns
on or a warning
buzzer sounds ................ 469
If you have a flat tire
(vehicles with
spare tire) ....................... 482
If you have a flat tire
(vehicles without
a spare tire) .................... 494
If the hybrid system
will not start..................... 516
If you lose your keys ......... 518
If the electronic key does not
operate properly ............. 519
If the 12-volt battery is
discharged ...................... 522
If your vehicle
overheats ........................ 528
If the vehicle becomes
stuck ............................... 534
If your vehicle has
to be stopped in
an emergency ................. 536

516
5-2. Steps to take in an emergency
PRIUS +_OM_OM47821E_(EE)
If the hybrid system will not start
Reasons for the hybrid system not starting vary depending on the
situation. Check the following and perform the appropriate proce-
dure:
The hybrid system will not start even though the correct
starting procedure is being followed (P. 214)
One of the following may be the cause of the problem:
The electronic key may not be functioning properly.
*
(P. 519)
There may not be sufficient fuel in the vehicle’s tank.
Refuel the vehicle.
There may be a malfunction in the immobilizer system.
*
(P. 143)
There may be a malfunction in the P position control system.
*
(P. 219, 473, 473)
*: It may not be possible to shift the shift position from P to other posi-
tion.
The interior lights and headlights are dim, or the horn does
not sound or sounds at a low volume
One of the following may be the cause of the problem:
The 12-volt battery may be discharged. (P. 522)
The 12-volt battery terminal connections may be loose or cor-
roded.

5
519
5-2. Steps to take in an emergency
When trouble arises
PRIUS +_OM_OM47821E_(EE)
If the electronic key does not operate properly
Locking and unlocking the doors
Use the mechanical key (P. 6 1 )
in order to perform the following
operations:
Locks all the doors
Unlocks the door
If communication between the electronic key and vehicle is inter-
rupted (P. 73) or the electronic key cannot be used because the
battery is depleted, the smart entry & start system and wireless
remote control cannot be used. In such cases, the doors can be
opened and the hybrid system can be started by following the proce-
dure below.

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)

564 Alphabetical index
PRIUS +_OM_OM47821E_(EE)
Bluetooth®*
Bottle holders........................... 357
Brake
Fluid ...................................... 549
Parking brake ........................ 234
Brake assist.............................. 298
Break-in tips ............................. 203
Brightness control
Instrument cluster light
control ................................. 239
Camera
*
Care
Exterior.................................. 382
Interior ................................... 387
Seat belts .............................. 388
Cargo hooks ............................. 377
CD player
*
Chains ....................................... 321
Child restraint system
Baby seats, definition ............ 173
Baby seats, installation ......... 185
Child seats, definition ............ 173
Child seats,
installation........................... 185
Installing child restraint system
with ISOFIX rigid
anchors ............................... 191
Installing child restraint system
with seat belts ..................... 185
Installing child restraint system
with top strap ...................... 193
Junior seats, definition .......... 173
Junior seats,
installation........................... 185Child safety
Airbag precautions ................ 165
Back door precautions ............ 99
Child restraint system ........... 173
Child-protectors ...................... 95
How your child should wear
the seat belt ........................ 126
Installing
child restraints .................... 184
Panoramic roof
precautions ......................... 371
Power window lock switch .... 135
Power window precautions ... 138
Removed electronic key battery
precautions ......................... 432
Seat belt precautions ............ 127
Seat heater precautions........ 368
12-volt battery precautions ... 416
Child-protectors......................... 95
Cleaning
Exterior ................................. 382
Interior................................... 387
Seat belts .............................. 388
Clock ......................................... 364
Condenser ................................ 410
Console box ............................. 354
Cooling system
Engine overheating ............... 528
Hybrid system overheating ... 528
Cruise control
Cruise control........................ 275
Dynamic radar cruise
control................................. 280
Cup holders.............................. 355
Curtain shield airbags ............. 158
Customizable features ............ 554
C

565 Alphabetical index
PRIUS +_OM_OM47821E_(EE)
Daytime running light
system .................................... 263
Deck board ............................... 377
Defogger
Rear window ......................... 341
Side mirrors........................... 341
Dimensions .............................. 540
Display
Dynamic radar cruise
control ................................. 280
Head-up display .................... 253
Trip information ..................... 241
Do-it-yourself maintenance .... 393
Door lock
Back door ................................ 97
Side doors ............................... 94
Smart entry & start system...... 64
Wireless remote control .......... 92
Door pockets ............................ 360
Doors
Back door ................................ 97
Door glasses ......................... 135
Door lock ..................... 64, 92, 94
Rear door child-protector ........ 95
Side doors ............................... 94
Driver’s seat belt reminder
light ......................................... 477
Driving
Break-in tips .......................... 203
Correct posture ..................... 156
Procedures............................ 202
Winter driving tips ................. 319Eco drive mode switch............ 226
Electric power steering ........... 298
Electronic key
If the electronic key does not
operate properly ................. 519
Replacing battery .................. 430
Emergency, in case of
If a warning buzzer
sounds ................................ 469
If a warning light turns on...... 469
If the electronic key does not
operate properly ................. 519
If the hybrid system will not
start .................................... 516
If the 12-volt battery is
discharged .......................... 522
If you have a flat tire .... 482, 494
If you lose your keys ............. 518
If you think something is
wrong.................................. 468
If your vehicle becomes
stuck ................................... 534
If your vehicle has to be
stopped in an
emergency.......................... 536
If your vehicle needs to be
towed .................................. 461
If your vehicle overheats ....... 528
Emergency flashers
Switch ................................... 460
Emergency tire puncture
repair kit ................................. 494DE
*: Refer to ““touch screen” Owner’s Manual”
or “Navigation System Owner’s Manual”.

569 Alphabetical index
PRIUS +_OM_OM47821E_(EE)
Panoramic roof
Sun shade ............................. 369
Washing precautions ............ 386
Parking brake ........................... 234
PCS ........................................... 307
Personal lights
Switch ................................... 349
Wattage................................. 551
Pollen removal mode............... 333
Power outlets ........................... 365
“POWER” switch ..................... 214
Power windows ........................ 135
Pre-crash safety system ......... 307
Radar cruise control
system .................................... 280
Radiator .................................... 410
Radio
*
Radio data system*
RDS*
Rear sunshade ......................... 373
Rear turn signal lights
Replacing light bulbs ............. 445
Wattage................................. 551
Rear view mirror .............. 131, 133
Rear window and outside
rear view mirror defoggers ... 341
Rear window wiper and
washer .................................... 272
Replacing
Electronic key battery............ 430
Fuses .................................... 433
Light bulbs............................. 445
Tires ...................................... 482
Roof shades ............................. 369Seat belt reminder light........... 477
Seat belts
Adjusting the seat belt .......... 123
Child restraint system
installation .......................... 184
Cleaning and maintaining
the seat belt ........................ 388
Emergency Locking Retractor
(ELR) ................................. 125
How to wear your seat belt ... 120
How your child should wear
the seat belt ........................ 126
Pre-crash seat belts .............. 307
Pregnant women,
proper seat belt use............ 125
Reminder light....................... 477
Seat belt hangers.................. 110
Seat belt pretensioners ......... 124
Seat heaters ............................. 367
Seats
Adjustment ........... 103, 107, 113
Adjustment
precautions ......... 105, 110, 115
Child seats/child restraint
system installation .............. 184
Cleaning................................ 387
Flattening seatbacks ............. 104
Folding down the
seatbacks .................... 108,113
Head restraint ....................... 117
Properly sitting in the seat .... 156
Seat heaters ......................... 367
Second seats
Adjustment ............................ 107
Folding down ........................ 108
P
R
S
*: Refer to ““touch screen” Owner’s Manual”
or “Navigation System Owner’s Manual”.

573 Alphabetical index
PRIUS +_OM_OM47821E_(EE)
Warning message
Parking lock system .............. 473
Washer
Checking ............................... 411
Preparing and checking
before winter ....................... 319
Switch ........................... 268, 272
Washing and waxing ............... 382
Wheels ...................................... 425
Window glasses ....................... 135
Window lock switch................. 135
Windows
Power windows ..................... 135
Rear window defogger .......... 341
Washer.......................... 268, 272
Windshield wipers ................... 268
Winter driving tips ................... 319
Wireless remote control key
Locking/Unlocking ................... 92
Replacing the battery ............ 430
WMA disc
*
*: Refer to ““touch screen” Owner’s Manual”
or “Navigation System Owner’s Manual”.