2010 TOYOTA PRIUS change key battery

55
1-2. Key information
1
Before driving
PRIUS_U (OM47668U) U.S.A.
■
If the smart key system does not operate properly
● Locking and unlocking the doors: Use the mechanical key. ( P. 541)
● Starting the hybrid system: P. 542
■ When the electronic key battery is fully depleted
 P. 460
■ Customization that can be co nfigured at Toyota dealer
Settings (e.g. smart key system) can be changed. 
(Customizable features P. 587)
■ Certification for the smart key system
For vehicles sold in the U.S.A.
FCC ID: NI4TMLF8-2
FCC ID: HYQ14ACX FCC ID: HYQ14ADF 
FCC ID: HYQ13CZD FCC ID: HYQ13CZE
NOTE: 
This device complies with Part 15 of the FCC Rules. Operation is subject to
the following two conditions: (1) this device may not cause harmful interfer-
ence, and (2) this device must accept any interference received, including
interference that may cause undesired operation.
FCC WARNING: 
Changes or modifications not expressly approved by the party responsible
for compliance could void the user’s authority to operate the equipment.
For vehicles sold in Canada
NOTE: 
Operation is subject to the following two conditions: (1) this device may not
cause interference, and (2) this device must accept any interference, includ-
ing interference that may cause undesired operation of the device.

59
1-2. Key information
1
Before driving
PRIUS_U (OM47668U) U.S.A.
■
Conditions aff ecting operation
 P. 6 5
■ Electronic key battery depletion
 P. 6 4
■ To operate the system properly
Make sure to carry the electronic key when operating the system.
Depending on the position and holding condition of the electronic key, the
key may not be detected correctly and the system may not operate properly.
(The alarm may go off accidentally, or the door lock prevention may not func-
tion.)
■ Note for the smart key system
● Even when the electronic key is within the effective range (detection
areas), the system may not operate properly. 
For example, the electronic key is on the instrument panel, luggage
cover, floor or in the glove box when the hybrid system is started or
“POWER” switch modes are changed.
● Even if the electronic key is not inside the vehicle, it may be possible to
start the hybrid system if the electronic key is near the window.

61
1-2. Key information
1
Before driving
PRIUS_U (OM47668U) U.S.A.
*1: A message will be shown on the multi-information display in the instru-
ment cluster.
*2: If the hybrid system does not start when the electronic key is inside the vehicle, the electronic key battery may be depleted or there may be dif-
ficulties receiving signal from the key. ( P. 541)
■ If the smart key system does not operate properly
 P. 542
■ When the electronic key battery is fully depleted
 P. 460
■ Customization that can be co nfigured at Toyota dealer
Settings (e.g. smart key system) can be changed. 
(Customizable features P. 587)
AlarmSituationCorrection procedure
Interior alarm
pings once
*1
The electronic key has a
low battery Replace the electronic
key battery
An attempt was made to
start the hybrid system
without the electronic key
being present, or the elec-
tronic key was not func-
tioning normally Start the hybrid sys-
tem with the elec-
tronic key present
*2
Interior alarm
pings once and
exterior alarm
sounds 3 times
*1
The driver’s door was
closed after the key was
carried outside the vehicle,
and the “POWER” switch
was not turned OFF
Turn the “POWER”
switch OFF and close
the driver’s door again
An occupant carried the
electronic key outside the
vehicle and closed the
door while the “POWER”
switch was not OFF Bring the electronic
key back into the vehi-
cle

66 1-3. Opening, closing and locking the doors and back door
PRIUS_U (OM47668U) U.S.A.
■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.
■ If the wireless remote cont rol does not operate properly
● Locking and unlocking the doors: Use the mechanical key. ( P. 541)
● Starting the hybrid system ( P. 162)
■ When the electronic key battery is fully depleted
 P. 460
■ Customization that can be co nfigured at Toyota dealer
Settings (e.g. 2-step unlocking function) can be changed. 
(Customizable features P. 587)

522 5-2. Steps to take in an emergency
PRIUS_U (OM47668U) U.S.A.
InteriorbuzzerExterior buzzerWarning messageDetailsCorrection procedure
Once 
(Flashing)The elec-
tronic key
does not
operate
properly.
P. 542
 Power
was
turned off
due to
the auto-
matic
power off
function.Next time when
starting the
hybrid system,
increase the
engine speed
slightly and
maintain that
level for approxi-
mately 5 min-
utes to recharge
the battery.
■ Changing the engine oil
Make sure to reset oil change system.

542 5-2. Steps to take in an emergency
PRIUS_U (OM47668U) U.S.A.
Changing “POWER” switch modes and starting the hybrid sys-
temApply the brakes and touch the
Toyota emblem side of the
electronic key to the “POWER”
switch.
An alarm will sound to indicate
that the start function cannot
detect the electronic key that is
touched to the “POWER” switch if
any of the doors is opened and
closed while the key is touched to
the switch.
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. 164) 
To start the hybrid system: Press the “POWER” switch within
10 seconds after the buzzer s ounds, keeping the brake pedal
depressed.
In the event that the “POWER” swit ch still cannot be operated, con-
tact your Toyota dealer.
ITO52P165
STEP1
■ Stopping the hybrid system
Push the “P” position switch and press the “POWER” switch as you normally
do when stopping the hybrid system.
■ Replacing the key battery
As this procedure is the temporary measure, it is recommended that the
electronic key battery be replaced immediately when the battery depletes.
(P. 460)
STEP2

601
PRIUS_U (OM47668U) U.S.A.
Alphabetical index
Alphabetical index
A/C ............................................ 270
ABS........................................... 245
Active head restraint................. 78
Air conditioning filter .............. 457
Air conditioning systemAir conditioning filter ............. 457
Automatic air conditioning 
system................................ 270
Remote Air Conditioning 
System ............................... 285
Steering wheel climate 
remote control switches ..... 280
Airbags Airbag operating conditions .. 117
Airbag precautions for your 
child.................................... 121
Airbag warning light .............. 497
Curtain shield airbag 
precautions ........................ 121
Front passenger occupant 
classification system .......... 126
General airbag precautions .. 121
Locations of airbags ............. 113
Modification and disposal of 
airbags ............................... 125
Side airbag precautions........ 121
Side and curtain shield airbags 
operating conditions ........... 117
SRS airbags ......................... 113
Antenna .................................... 298
Anti-lock brake system ........... 245
Armrest .................................... 383
Audio input .............................. 322
Audio system
Antenna ................................ 298
Audio input ........................... 322
AUX adapter ......................... 322
CD player/changer ............... 303
MP3/WMA disc ..................... 311
Optimal use .......................... 319
Portable music player ........... 322
Radio .................................... 294
Steering switches ................. 323 Automatic headlight leveling

system ....................................206
Automatic light control 
system ....................................206
AUX adapter .............................322
Auxiliary boxes ........................375
Back door
Back door ................................72
Smart key system... .................43
Wireless remote control ..........63
Back-up lights Replacing light bulbs .............472
Wattage .................................567
Battery Checking ...............................436
Hybrid battery 
(traction battery)....................32
If the vehicle 12 volt battery is 
discharged ..........................543
Preparing and checking 
before winter .......................261
Bluetooth
®................................326
Bottle holder .............................374
Brake Fluid ......................................432
Parking brake ........................179
Brake assist ..............................245
Break-in tips .............................151
Brightness control Instrument light control ..........184
A
B

602 Alphabetical index
PRIUS_U (OM47668U) U.S.A.
CareExterior .................................. 404
Interior ...................................407
Seat belts ..............................408
Cargo capacity .........................260
Cargo hooks ............................. 385
CD player/changer ...................303
Chains ....................................... 263
Child-protectors ......................... 68
Child restraint system Booster seats, definition ........ 132
Booster seats, installation ..... 137
Convertible seats, 
definition ............................. 132
Convertible seats, 
installation ...........................137
Front passenger occupant 
classification system ...........126
Infant seats, definition ...........132
Infant seats, installation.........137
Installing child restraint 
system with 
LATCH system....... ............. 138
Installing child restraint 
system with seatbelts.......... 140
Installing child restraint 
system with top straps ........ 144
Child safety
Airbag precautions ................121
Child restraint system............132
Child-protectors ....................... 68
How your child should wear 
the seatbelt ...........................88
Installing child restraints ........ 137
Moon roof precautions .......... 100
Power window lock switch....... 98
Power window precautions .....99
Removed electronic key 
battery precautions ............. 461
Seat belt precautions ..............89
Back door ................................72 Cleaning
Exterior.................................. 404
Interior ................................... 407
Seat belts .............................. 408
Clock ......................................... 201
Condenser ................................ 432
Console box ............................. 369
Cooling system Hybrid system overheating ... 548
Cruise control Cruise control ........................ 214
Dynamic radar 
cruise control ...................... 218
Cup holders .............................. 372
Curtain shield airbags ............. 113
Customizable features ............ 587
Daytime running light 
system .................................... 207
Defogger Rear window ......................... 289
Side mirror ............................ 289
Dimension ................................ 556
Dinghy towing .......................... 267
Display Trip information ..................... 188
Warning messages ............... 508
Do-it-yourself maintenance .... 416
Door courtesy lights ................ 363
Door lock Back door ................................ 72
Side doors ............................... 67
Smart key system .. ................. 43
Wireless remote control .......... 63
Doors Back door ................................ 72
Side doors ............................... 67
Rear door child protector ........ 68C
D