
5
When trouble arises
589
5-2. Steps to take in an emergency
PRIUS PHV_OM_OM47787U_(U)
Emergency start function
When the hybrid system does not start, the following steps can be
used as an interim measure to st art the hybrid system if the
“POWER” switch is functioning normally:
Set the parking brake.
Turn the “POWER” switch to ACCESSORY mode.
Press and hold the “POWER” switch for about 15 seconds
while depressing the brake pedal firmly.
Even if the hybrid system can be started using the above steps, the
system may be malfunctioning. Have the vehicle inspected by your
Toyota dealer.
■ The interior lights and headlights do not turn on, or the horn
does not sound
One of the following may be the cause of the problem:
●One or both of the 12-volt ba ttery terminals may be discon-
nected.
● The 12-volt battery may be discharged. ( P. 594)
Contact your Toyota dealer if the problem cannot be repaired, or if
repair procedures are unknown.
STEP 1
STEP 2
STEP 3

5
When trouble arises
597
5-2. Steps to take in an emergency
PRIUS PHV_OM_OM47787U_(U)
■
Starting the hybrid system when the 12-volt battery is discharged
The hybrid system cannot be started by push-starting.
■ To prevent 12-volt battery discharge
● Turn off the headlights and the audio system while the hybrid system is
off.
● Turn off any unnecessary electrical components when the vehicle is run-
ning at a low speed for an extended period, such as in heavy traffic.
■ When the 12-volt battery is removed or discharged
● The hybrid system may not start. ( P. 473)
● If the 12-volt battery is depleted with the shift position in P, it will not be
possible to shift the shift position other than P. In this case, the vehicle
cannot be towed without lifting both front wheels because the front
wheels are locked by the parking lock. ( P. 525)
● When the 12-volt battery is reconnected, start the hybrid system, depress
the brake pedal, and confirm that it is possible to shift into each shift posi-
tion.
■ Charging the 12-volt battery
The electricity stored in the 12-volt battery will discharge gradually even
when the vehicle is not in use, due to natural discharge and the draining
effects of certain electrical appliances. If the vehicle is left for a long time, the
12-volt battery may discharge, and the hybrid system may be unable to start.
(The 12-volt battery charges automatically while the hybrid system is operat-
ing.)

668
PRIUS PHV_OM_OM47787U_(U)
Alphabetical index
Alphabetical index
A/CAutomatic air conditioning
system ................................358
ABS ...........................................328
Active head restraint ............... 147
Air conditioning system Automatic air conditioning system ................................358
Remote Air Conditioning System ................................371
Steering wheel climate remote control switches ......369
Airbags Airbag operating conditions............................ 188
Airbag precautions for your child .................................... 192
Airbag warning light............... 535
Curtain shield airbag operating
conditions............................ 188
Curtain shield airbag
precautions .........................192
Front passenger occupant classification system ...........198
General airbag precautions ...192
Knee airbag ...........................184
Locations of airbags ..............184
Modification and disposal of airbags ................................197
Proper driving posture ...........182
Side airbag operating
conditions............................ 188
Side airbag precautions ........ 192
Side and curtain shield airbags
operating conditions............188
Side and curtain shield airbags
precautions .........................192
SRS airbags .......................... 184
SRS airbag instructions for Canadian owners. ............... 653 Antenna .................................... 427
Anti-lock brake system ........... 328
Armrest ..................................... 399
Assist grips .............................. 400
Audio input
*............................. 381
Audio remote control switches
*
Audio system*
Audio/video system*
Automatic air conditioning system Air conditioning system ......... 358
Automatic air conditioning
system ................................ 358
Remote Air Conditioning
System................................ 371
Steering wheel climate remote control switches ...... 369
Automatic headlight leveling system .................................... 297
Automatic light control
system .................................... 292
AUX port
*................................. 381
Auxiliary box .................... 391, 403
A

669
Alphabetical index
PRIUS PHV_OM_OM47787U_(U)
Back door
Back door ............................. 140
Smart key system ... .............. 108
Wireless remote control........ 132
Back-up lights Replacing light bulbs ............ 507
Wattage ................................ 620
Battery Checking .............................. 471
If the 12-volt battery is
discharged ......................... 594
Preparing and checking
before winter ...................... 349
Bluetooth
®*
Bottle holders .......................... 390
Brake Fluid...................................... 619
Parking brake ....................... 255
Brake assist ............................. 328
Break-in tips ............................ 226
Brightness control Instrument panel light
control ................................ 260 Camera
*
Care
Exterior ..................................424
Interior ...................................428
Seat belts ..............................429
Cargo capacity .........................348
Cargo hooks .............................403
CD player
*
Chains .......................................351
Charging
Charging cable ........................74
Charging equipment ................73
Charging messages ..............562
Charging precautions ..............94
Charging procedure ................80
Charging timer function ...........86
Charging time will increase when.......................93
High voltage components........44
Information related to charging display ....................89
Maintenance..........................103
Power sources precautions .....79
Power sources that can be used ......................................77
Safety functions.................75, 91
When charging cannot be carried out .............................98
BC
GW Refer to

672 Alphabetical index
PRIUS PHV_OM_OM47787U_(U)
EngineAccessory mode.................... 240
Compartment ........................459
Hood......................................442
How to start the hybrid system ................................238
Identification number ............. 611
If the hybrid system will not start .....................................588
Ignition switch........................238
Overheating...........................600
“POWER” switch ...................238
Engine coolant Capacity ................................617
Checking ............................... 464
Preparing and checking before winter ....................... 349
Engine/power control
unit coolant Capacity ................................617
Checking ............................... 464
Preparing and checking before winter ....................... 349
Engine oil Capacity ................................614
Checking ............................... 460
Preparing and checking before winter ....................... 349
Enhanced VSC .........................328
EPS ............................................ 328
EV driving ratio indicator ........ 271
EV driving range ................58, 268
Event data recorder ...................25
EV/HV mode selection switch .......................................37 Floor mats ................................ 401
Fluid
Brake..................................... 619
Washer.................................. 469
Fog lights Replacing light bulbs ............. 507
Switch ................................... 298
Wattage................................. 620
Foot lights ................................ 382
Front fog lights
Replacing light bulbs ............. 507
Switch ................................... 298
Wattage................................. 620
Front passenger occupant classification system ............ 198
Front passenger’s seat belt reminder light ........................ 537
Front seats
Adjustment ............................ 146
Front side marker light Replacing light bulbs ............. 507
Wattage................................. 620
Front turn signal lights Replacing light bulbs ............. 507
Switch ................................... 254
Wattage................................. 620
Fuel Capacity ................................ 613
Fuel gauge ............................ 257
Information ............................ 621
Refueling ............................... 174
Type ...................................... 621
Fuel door .................................. 174
Fuel filler door .......................... 174
Fuses ........................................ 495F

675
Alphabetical index
PRIUS PHV_OM_OM47787U_(U)
Odometer ................................. 266
Oil
Engine oil.............................. 460
Opener Back door ............................. 140
Fuel filler door....................... 174
Hood ..................................... 442
Outside rear view mirrors Adjusting and folding ............ 169
Outside rear view mirror defogger switch .................... 375
Outside temperature
display ................................... 394
Overheating ............................. 600
Parking brake .......................... 255
Parking lights Switch ................................... 292
PCS ........................................... 335
Personal lights Switch ................................... 383
Wattage ................................ 620
Plug-in hybrid system Driving tips.............................. 67
EV driving range ..................... 58
EV mode................................. 35
EV/HV mode selection
switch ................................... 37
Features ................................. 32
How to charge ........................ 80
HV mode ................................ 36
Plug-in Hybrid Applications .... 70
Power outlets........................... 395
Power sources........................... 77
“POWER” switch ..................... 238
Power windows ....................... 171
Pre-collision system ............... 335 Radar cruise control
system ....................................312
Radiator ....................................466
Radio
*
Radio data system*
RDS*
Rear seats
Adjustment ............................149
Folding down .........................150
Rear turn signal lights Replacing light bulbs .............507
Wattage .................................620
Rear view mirror...............166, 169
Rear view monitor system
*
Rear window and outside rear view mirror
defoggers ...............................375
Rear window wiper and
washer ....................................304
Remote Air C onditioning
System ....................................371
Replacing
Electronic key battery ............493
Fuses ....................................495
Light bulbs .............................507
Tires ......................................448
Reporting safety defects for U.S. owners ............................650
O
P
R
*: Refer to “Display Audio System Owner’s Manual” or “Navigation System Owner’s Manual”.

678 Alphabetical index
PRIUS PHV_OM_OM47787U_(U)
Tonneau cover .........................404
Tools ......................................... 448
Total load capacity...................348
Touch tracer display ................258
TowingDinghy towing........................355
Emergency towing.................526
Trailer towing.........................354
TRAC ......................................... 328
Traction control........................328
Trailer towing ...........................354
Transmission
Hybrid transmission............... 245
P position switch ...................248
Trip information ....................... 274
Trip meter .................................257
Turn signal lights Replacing light bulbs ............. 507
Switch.................................... 254
Wattage .................................620
USB port
*.................................381
Vanity lights Vanity lights ...........................393
Wattage .................................620
Vanity mirrors...........................393
Vehicle data recordings ............ 24
Vehicle identification number ...................................611
Vehicle proximity notification system ...................................... 38
Vehicle stability control...........328
VSC............................................ 328 Warning buzzers
Brake system ........................ 533
Open door ............................ 537
Seat belt reminder................. 537
Warning lights Anti-lock brake system
(ABS) .................................. 535
Automatic headlight leveling system ................................ 536
Brake system ................ 533, 536
Charging system .... ............... 534
Cruise control ........................ 536
Electric power steering
system ................................ 535
High coolant temperature...... 534
Hybrid system ....................... 535
Low fuel level ........................ 537
Low tire pressure .................. 538
Malfunction indicator lamp .... 535
Open door ............................. 537
Pre-collision system .............. 536
Radar cruise control. ............. 536
Seat belt warning light........... 537
Slip indicator ......................... 536
SRS airbags .......................... 535
Tire pressure warning light.... 538U
V
W

681
What to do if...
PRIUS PHV_OM_OM47787U_(U)
■
Warning lights
P. 538
or
P. 535
or
P. 533P. 535
P. 534P. 536
P. 534P. 536
P. 536
or
P. 535P. 536
P. 535P. 536
Master warning light ABS warning light
Brake system warning
light (red indicatorF
Electric power steering
system warning light
Charging system
warning lightPre-collision system
warning light
G
High coolant
temperature warning
lightSlip indicator light
Brake system warning
light (yellow indicator)Malfunction indicator
lamp
Automatic headlight
leveling system
warning light
SRS warning lightCruise control indicator
light
G