2012 TOYOTA PRIUS key battery

5
When trouble arises
541
5-2. Steps to take in an emergency
If the electronic key does not operate properly
Locking and unlocking the doorsUse the mechanical key (P. 58)
in order to perform the following
operations:
Locks all the doors
Unlocks the door
Turning the key rearward unlocks
the driver’s door. Turning the key
once again within 3 seconds
unlocks the other doors.
If communication between the electronic key and vehicle is inter-
rupted ( P. 72) or the electronic key cannot be used because the
battery is depleted, the smart key system and wireless remote con-
trol cannot be used. In such cases, the doors can be opened and the
hybrid system can be started by following the procedure below.
ITO52P12N

542 5-2. Steps to take in an emergency
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. 194)
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. 454)
STEP 3

619
Alphabetical index
Back door
Back door ............................... 93
Smart key system ... ................ 61
Wireless remote control.......... 85
Back-up lights
Replacing light bulbs ............ 467
Wattage ................................ 570
Battery
Checking .............................. 431
If the 12-volt battery is discharged ......................... 543
Preparing and checking before winter ...................... 317
Bluetooth
®*
Bottle holders .......................... 362
Brake Fluid...................................... 568
Parking brake ....................... 212
Brake assist ............................. 296
Break-in tips ............................ 181
Brightness control Instrument panel light control ................................ 217 Camera
*
Care
Exterior ..................................396
Interior ...................................399
Seat belts ..............................400
Cargo capacity .........................316
Cargo hooks .............................374
CD player
*
Chains .......................................319
Child restraint system Booster seats, definition ........160
Booster seats, installation .....168
Convertible seats, definition .............................160
Convertible seats, installation ...........................168
Front passenger occupant
classification system ........... 154
Infant seats, definition ...........160
Infant seats, installation.........168
Installing child restraint system with LATCH anchors ...........166
Installing child restraint system
with seat belts .....................168
Installing child restraint system with top tether strap ............172
BC
GW Refer to

620 Alphabetical index
Child safetyAirbag precautions ................148
Back door precautions ............95
Child restraint system............ 160
Child-protectors .......................88
How your child should wear
the seat belt ........................ 111
Installing child restraints ........ 165
Power window lock switch..... 123
Power window precautions ... 125
Removed electronic key battery
precautions ......................... 455
Seat belt extender precautions ......................... 116
Seat belt precautions ............ 112
Seat heater precautions ........ 370
12-volt battery precautions .... 434
Child-protectors .........................88
Cleaning Exterior .................................. 396
Interior ................................... 399
Seat belts .............................. 400
Clock ......................................... 230
Condenser ................................ 426
Console box ............................. 359
Cooling system
Engine overheating ............... 549
Hybrid system overheating.... 549
Cruise control
Cruise control ........................ 266
Dynamic radar cruise control ................................. 270
Cup holders .............................. 360
Curtain shield airbags ............. 140
Customizable features............. 590 Daytime running light
system .................................... 253
Deck board ............................... 374
Defogger Rear window ......................... 346
Side mirrors........................... 346
Dimensions .............................. 560
Dinghy towing .......................... 323
Display Dynamic radar cruise control ................................. 270
Multi-information ................... 223
Warning messages ............... 507
Do-it-yourself maintenance .... 410
Door lock
Back door ................................ 93
Side doors ............................... 87
Smart key system .. ................. 61
Wireless remote control .......... 85
Doors
Back door ................................ 93
Door glasses ......................... 123
Door lock ..................... 61, 85, 87
Rear door child-protector ........ 88
Side doors ............................... 87
Driver’s seat belt reminder
light ......................................... 498
Driving Break-in tips .......................... 181
Correct posture ..................... 138
Procedures............................ 180
Winter driving tips ................. 317D

621
Alphabetical index
Eco drive mode switch ........... 204
Electric power steering........... 296
Electronic key
If the electronic key does not operate properly ................. 541
Replacing battery ................. 454
Emergency, in case of If a warning buzzer
sounds ............................... 493
If a warning light turns on ..... 493
If the electronic key does not operate properly ................. 541
If the hybrid system will not start .................................... 538
If the 12-volt battery is discharged ......................... 543
If you have a flat tire ............ 523
If you lose your keys............. 540
If you think something is wrong ................................. 492
If your vehicle becomes stuck................................... 554
If your vehicle has to be
stopped in an
emergency ......................... 556
If your vehicle needs to be
towed ................................. 485
If your vehicle overheats ...... 549
Emergency flashers
Switch ................................... 484 Engine
Accessory mode....................194
Compartment ........................419
Hood......................................413
How to start the hybrid
system ................................192
Identification number .............561
If the hybrid system will not start .....................................538
Ignition switch........................192
Overheating...........................549
“POWER” switch ...................192
Engine coolant Capacity ................................566
Checking ...............................424
Preparing and checking before winter .......................317
Engine/power control unit coolantCapacity ................................566
Checking ...............................424
Preparing and checking before winter .......................317
Engine oil Capacity ................................563
Checking ...............................420
Preparing and checking before winter .......................317
Enhanced VSC .........................296
EPS ............................................296
EV drive mode switch ..............199
Event data recorder ...................25E

625
Alphabetical index
Replacing
Electronic key battery ........... 454
Fuses.................................... 456
Light bulbs ............................ 467
Tires ..................................... 523
Reporting safety defects for U.S. owners ........................... 600
Safety Connect ........................ 388
Seat belt reminder light .......... 498
Seat belts Adjusting the seat belt .......... 110
Automatic Locking Retractor (ALR).................................. 111
Child restraint system installation .......................... 165
Cleaning and maintaining the seat belt ....................... 400
Emergency Locking Retractor
(ELR) ................................. 111
How to wear your seat belt ............................. 109
How your child should wear the seat belt ....................... 111
Pre-collision seat belts ......... 303
Pregnant women,
proper seat belt use ........... 113
Reminder light ...................... 498
Seat belt extenders .............. 112
Seat belt instructions for Canadian owners .......... 601
Seat belt pretensioners ........ 110
Seat heaters ............................. 369
Seating capacity ...................... 316 Seats
Adjustment .....................99, 102
Adjustment
precautions .................101, 104
Child seats/child restraint
system installation ..............165
Cleaning ................................399
Folding down the seatbacks............................103
Head restraint........................105
Properly sitting in the seat .....138
Seat heaters ..........................369
Service reminder indicators ..............................219
Shift lever Transmission .........................202
Side airbags..............................140
Side marker lights
Replacing light bulbs .............467
Switch....................................250
Wattage .................................570
Side mirrors Adjusting and folding ............. 121
Smart key system Antenna location .....................64
Entry functions ........................61
Starting the hybr id system.....192
Solar Ventilation System .........339
SOS button ...............................388
Spare tire Inflation pressure...................569
Storage location ....................523
Spark plug ................................566
Specifications...........................560
Speedometer ............................214
S
*: Refer to “Display Audio System Owner’s Manual” or “Navigation System Owner’s Manual”.

628 Alphabetical index
Warning messages .................. 507
WasherChecking ............................... 429
Preparing and checking before winter ....................... 317
Switch.................................... 258
Washing and waxing ............... 396
Weight Cargo capacity ...................... 316
Load limits ............................. 316
Weight ................................... 560
Wheels ...................................... 451
Window glasses ....................... 123
Window lock switch ................. 123
Windows Power windows ..................... 123
Rear window defogger .......... 346
Washer .................................. 258
Windshield wipers ................... 258
Winter driving tips ................... 317
Wireless remote control key Locking/Unlocking ...................85
Replacing the battery ............ 454
WMA disc
*

630
What to do if...
What to do if...
A tire puncturesP. 523If you have a flat tire
The hybrid system does not start
P. 538If the hybrid system will not start
P. 135Immobilizer system
P. 543If the 12-volt battery is
discharged
The high coolant temperature
warning light flashes or comes on
“HYBRID SYSTEM OVERHEAT”
is displayed
Steam can be seen coming
from under the hood
P. 549If your vehicle overheats
The key is lostP. 540If you lose your keys
The 12-volt battery runs outP. 543If the 12-volt battery is
discharged
The doors cannot be lockedP. 8 7Side doors
P. 9 3Back door
The vehicle is stuck in mud or
sandP. 554If the vehicle becomes stuck
A warning light or indicator
light comes onP. 493If a warning light turns on or a
warning buzzer sounds