2012 TOYOTA PRIUS V warning light

5
When trouble arises
487
5-2. Steps to take in an emergency
PRIUS v_U (OM47784U)
If your vehicle overheats
Correction procedures■ If the high coolant temperature warning light flashes or comes
on
Stop the vehicle in a safe place and turn off the air condition-
ing system.
Check to see if steam is coming out from under the hood.
If you see steam: Stop the hybrid system. Carefully lift the hood after the
steam subsides and then restart the hybrid system.
If you do not see steam: Leave the hybrid system operating and carefully lift the
hood.
Check to see if the cooling fans are operating.
If the fans are operating: Wait until the high coolant temperature warning light goes
off and then stop the hybrid system.
If the fans are not operating: Stop the hybrid system immediately and call your Toyota
dealer.
The following may indicate that your vehicle is overheating:
●The high coolant temperature warn ing light flashes or comes on:
The engine may be overheating.
● The hybrid system overhe at warning light comes on:
The power control unit may be overheating.
Follow the correction procedure as described below.
STEP 1
STEP 2
STEP 3

488 5-2. Steps to take in an emergency
PRIUS v_U (OM47784U)
After the hybrid system has
cooled down sufficiently, check
the engine coolant level and
inspect the cooling system for
leaks.
If necessary, add engine coolant
up to the “FULL” line.
Water can be used in an emer-
gency measure if engine coolant
is unavailable. (P. 501)
Have the vehicle checked at nearest Toyota dealer as soon as possi-
ble.
■If the hybrid system overheat warning light comes on
Stop the vehicle in a safe place and turn off the air condition-
ing system.
Leave the hybrid system operating and carefully lift the hood.
Check if the cooling fans are operating.
If the fans are operating: Wait until the hybrid system overheat warning light turns off
and then stop the hybrid system.
If the warning light does not turn off, call your Toyota dealer.
If the fans are not operating: Stop the hybrid system immediately and call your Toyota
dealer.
STEP 4
STEP 5
STEP 1
STEP 2
STEP 3

552
PRIUS v_U (OM47784U)
Alphabetical index
Alphabetical index
A/CAir conditioning filter ..............405
Automatic air conditioning
system ................................280
ABS ...........................................252
Air conditioning filter............... 405
Air conditioning system Air conditioning filter ..............405
Automatic air conditioning
system ................................280
Steering wheel climate remote control switches ......293
Airbags Airbag operating conditions............................ 128
Airbag precautions for your child .................................... 132
Airbag warning light............... 446
Curtain shield airbag operating
conditions............................ 128
Curtain shield airbag
precautions .........................132
Front passenger occupant classification system ...........138
General airbag precautions ...132
Knee airbag ...........................124
Locations of airbags ..............124
Modification and disposal of airbags ................................137
Proper driving posture ...........122
Side airbag operating
conditions............................ 128
Side airbag precautions ........ 132
Side and curtain shield airbags
operating conditions............128
Side and curtain shield airbags
precautions .........................132
SRS airbags .......................... 124
SRS airbag instructions for Canadian owners. ............... 538 Antenna .................................... 354
Anti-lock brake system ........... 252
Armrest ..................................... 321
Audio input
*
Audio remote control
switches
*
Audio system*
Audio/video system*
Automatic air conditioning system Air conditioning filter.............. 405
Air conditioning system ......... 280
Automatic air conditioning system ................................ 280
Steering wheel climate
remote control switches ...... 293
Automatic headlight leveling system .................................... 220
Automatic light control system .................................... 213
AUX port
*
Auxiliary box .................... 312, 329
Back door
Back door ................................ 79
Smart key system .. ................. 57
Wireless remote control .......... 72
Back-up lights Replacing light bulbs ............. 421
Wattage................................. 506
Battery Checking ............................... 384
If the 12-volt battery is
discharged .......................... 481
Preparing and checking
before winter ....................... 273
A
B

554 Alphabetical index
PRIUS v_U (OM47784U)
Daytime running light system .................................... 218
Deck board ............................... 328
Defogger
Rear window .........................295
Side mirrors ...........................295
Dimensions............................... 496
Dinghy towing .......................... 278
Display Dynamic radar cruise control .................................235
Trip information ..................... 201
Do-it-yourself main tenance..... 363
Door lock Back door ................................79
Side doors ............................... 74
Smart key system... ................. 57
Wireless remote control .......... 72
Door pockets ............................ 313
Doors Back door ................................79
Door glasses .........................112
Door lock ..................... 57, 72, 74
Rear door child-protector ........75
Side doors ............................... 74
Driver’s seat belt reminder light ......................................... 451
Driving
Break-in tips .......................... 165
Correct posture ..................... 122
Procedures............................ 164
Winter driving tips.................. 273 Eco drive mode switch ............ 187
Electric power steering ........... 252
Electronic key
If the electronic key does not operate properly ................. 479
Replacing battery .................. 408
Emergency, in case of If a warning buzzer sounds ................................ 444
If a warning light turns on ...... 444
If the electronic key does not operate properly ................. 479
If the hybrid system will not start..................................... 476
If the 12-volt battery is
discharged .......................... 481
If you have a flat tire ............. 462
If you lose your keys ............. 478
If you think something is wrong .................................. 443
If your vehicle becomes stuck ................................... 491
If your vehicle has to be stopped in an
emergency .......................... 493
If your vehicle needs to be towed .................................. 437
If your vehicle overheats ....... 487
Emergency flashers Switch ................................... 436DE

559
Alphabetical index
PRIUS v_U (OM47784U)
Seats
Adjustment ...................... 84, 88
Adjustment precautions .................... 86, 91
Child seats/child restraint system installation.............. 149
Cleaning ............................... 352
Flattening seatbacks .............. 85
Folding down the seatbacks ... 89
Head restraint ......................... 93
Properly sitting in the seat .... 122
Seat heaters ......................... 319
Service reminder indicators .............................. 208
Shift lever
Transmission ........................ 185
Side airbags ............................. 124
Side marker lights Switch ................................... 213
Side mirrors Adjusting and folding ............ 110
Smart key system
Antenna location..................... 60
Entry functions........................ 57
Starting the hybrid system .... 175
SOS button .............................. 340
Spare tire Inflation pressure .................. 504
Storage location ................... 462
Spark plug................................ 502
Specifications .......................... 496
Speedometer ........................... 197 Steering wheel
Adjustment ............................107
Audio switches
*
Storage feature.........................305
StuckIf your vehicle becomes
stuck ...................................491
Sun visors.................................314
Sunshade Panoramic roof ......................322
Switch Audio remote control switches
*
Cruise control switch .............231
Driving mode selectswitch ..................................187
Eco drive mode switch ..........187
Emergency flasher switch .....436
EV drive mode switch............182
Fog light switch .....................221
Hazard light switch ................436
Headlight cleaner switch .......230
Ignition switch........................175
Light switches........................213
Panoramic roof shades switch ..................................322
Power door lock switch ...........74
“POWER” switch ...................175
Power window switch ............ 112
Pre-collision braking off switch ..................................259
Talk switch
*
Telephone switch*
Tire pressure warning reset switch ..................................391
Window lock switch ...............112
Wipers and washer switch ....223
*: Refer to “Display Audio System Owner’s Manual” or “Navigation System Owner’s Manual”.

560 Alphabetical index
PRIUS v_U (OM47784U)
Tail lightsSwitch.................................... 213
Talk switch
*
Telephone switch*
Theft deterrent system Immobilizer system ............... 119
Theft prevention labels............121
Tire inflation pressure ............. 398
Tire information Glossary ................................517
Size ....................................... 513
Tire identification number ......512
Uniform Tire Quality Grading ............................... 515
Tires
Chains ...................................274
Checking ............................... 389
Compact spare tire ................462
If you have a flat tire ..............462
Inflation pressure...................398
Inflation pressure sensor ....... 390
Information ............................ 510
Replacing ..............................462
Rotating tires .........................389
Size ....................................... 504
Snow tires ............................. 273
Spare tire............................... 462
Tire pressure warning system ........................389, 449 Tonneau cover ......................... 330
Tools ......................................... 462
Total load capacity .................. 272
Towing
Dinghy towing ....................... 278
Emergency towing ................ 438
Trailer towing ........................ 277
TRAC ......................................... 252
Traction control ....................... 252
Trailer towing ........................... 277
Transmission Hybrid transmission .............. 185
P position switch ................... 188
Trip information ....................... 201
Trip meter ................................. 198
Turn signal lights Replacing light bulbs ............. 421
Switch ................................... 194
Wattage................................. 506
USB port
*
Vanity lights Vanity lights........................... 315
Wattage................................. 506
Vanity mirrors .......................... 315
Vehicle data recordings ............ 22
Vehicle identification number ................................... 497
Vehicle proximity notification system.................. 32
Vehicle stability control .......... 252
VSC ........................................... 252
T
U
V

561
Alphabetical index
PRIUS v_U (OM47784U)
Warning buzzers
Brake system........................ 444
Open door ........................... 450
Seat belt reminder ................ 451
Warning lights Anti-lock brake system
(ABS) ................................. 446
Automatic headlight leveling system................................ 448
Brake system................ 444, 447
Charging system .... .............. 445
Cruise control ....................... 448
Electric power steering
system................................ 446
High coolant temperature ..... 445
Hybrid system....................... 445
Hybrid system overheat........ 449
LED headlights ..................... 448
Low engine oil pressure ....... 445
Low fuel level........................ 451
Low hybrid battery (traction battery) ................. 449
Low tire pressure .................. 451
Malfunction indicator lamp.... 446
Open door ............................ 450
Parking lock system ............. 447
P position request... .............. 449
Pre-collision system ............. 447
Radar cruise control. ............ 448
Seat belt warning light .......... 451
Slip indicator ......................... 447
Smart key system ... .............. 459
SRS airbags ......................... 446
Tire pressure warning light ... 451 Warning message
Parking lock system ..............448
Washer
Checking ...............................382
Preparing and checking before winter .......................273
Switch....................................223
Washing and waxing ...............348
Weight Cargo capacity ......................272
Load limits .............................272
Weight ...................................496
Wheels ......................................402
Window glasses .......................112
Window lock switch .................112
Windows Power windows .....................112
Rear window defogger ..........295
Washer ..................................223
Windshield wipers ...................223
Winter driving tips ...................273
Wireless remote control key Locking/Unlocking ...................72
Replacing the battery ............408
WMA disc
*
W
*: Refer to “Display Audio System Owner’s Manual” or “Navigation System Owner’s Manual”.

562
PRIUS v_U (OM47784U)
What to do if...
What to do if...
A tire puncturesP. 462If you have a flat tire
The hybrid system does not start
P. 476If the hybrid system will not start
P. 1 1 9Immobilizer system
P. 481If the 12-volt battery is
discharged
The high coolant temperature
warning light flashes or comes on
If the hybrid system overheat
warning light comes on
Steam can be seen coming
from under the hood
P. 487If your vehicle overheats
The key is lostP. 478If you lose your keys
The 12-volt battery runs outP. 481If the 12-volt battery is
discharged
The doors cannot be lockedP. 7 4Side doors
P. 7 9Back door
The vehicle is stuck in mud or
sandP. 491If the vehicle becomes stuck
A warning light or indicator
light comes onP. 444If a warning light turns on or a
warning buzzer sounds