Page 689 of 784

6898-2. Steps to take in an emergency
PRIUS PRIME_OM_OM47A88U_(U)
8
When trouble arises
One of the following may be the cause of the problem:
●The 12-volt battery may be discharged. ( →P. 694)
● One or both of the 12-volt batter y terminals may be disconnected.
( → P. 587)
Contact your Toyota dealer if the problem cannot be repaired, or if repair
procedures are unknown.
When the hybrid system does not start, the following steps can be
used as an interim measure to star t the hybrid system if the power
switch is functioning normally.
Do not use this starting procedure except in cases of emergency.
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 headlight s do not turn on, or the horn
does not sound.
Emergency start function
1
2
3
Page 694 of 784
694
PRIUS PRIME_OM_OM47A88U_(U)
8-2. Steps to take in an emergency
If the 12-volt battery is discharged
If you have a set of jumper (or booster) cables and a second vehicle
with a 12-volt battery, you can jump start your vehicle by following the
steps below.
Open the hood. ( →P. 577)
Remove the engine cover.
Pull up the both ends of the cover
vertically.
The following procedures may be used to start the hybrid sys-
tem if the vehicle’s 12-volt battery is discharged.
You can also call your Toyota de aler or a qualified repair shop.
1
2
Page 765 of 784
765What to do if... (Troubleshooting)
PRIUS PRIME_OM_OM47A88U_(U)
●Stop the vehicle in a safe place and repair the flat tire temporarily with
the emergency tire puncture repair kit. (→P. 671)
●Try the procedure for when the vehicle becomes stuck in mud, dirt, or
snow. ( →P. 705)
When a problem has occurred
If you have a flat tire
The vehicle becomes stuck
Page 770 of 784

770Alphabetical index
PRIUS PRIME_OM_OM47A88U_(U)
Drive information ..................... 207
Drive-Start Control .................. 308
Driver’s seat belt reminder light......................................... 656
Driving ...................................... 306
Break-in tips .......................... 309
Correct posture ....................... 28
Driving in the rain .................. 307
Driving mode select switch ... 406
Plug-in hybrid vehicle driving tips ........................................ 97
Procedures ........................... 306
Winter drive tips .................... 482
Dynamic radar cruise control
with full-speed range ............ 391
ECB (Electronically Controlled Brake System) .... 476
Eco drive mode ........................ 406
EDR (Event data recorder) ........ 11
Electric motor (traction motor) ....................... 78
Location .................................. 78
Specification ......................... 711
Electric Power Steering (EPS)....................................... 477
Function ................................ 477
Warning light ......................... 654
Electronic key .......................... 262
Battery-saving function ......... 280
If the electronic key does not operate properly ........... 690
Replacing the battery ............ 627
Electronically Controlled Brake System (ECB) ............. 476 Emergency, in case of
If a warning buzzer sounds... 653
If a warning light turns on ..... 653
If a warning message is displayed ............................ 663
If the 12-volt battery is discharged.......................... 694
If the electronic key does
not operate properly ........... 690
If the hybrid system will not start .............................. 688
If you have a flat tire ............. 671
If you lose your keys ..... 263, 266
If you think something is wrong .............................. 652
If your vehicle becomes stuck ................................... 705
If your vehicle has to be stopped in an emergency ... 645
If your vehicle needs to be
towed.................................. 646
If your vehicle overheats....... 700
Emergency flashers ................ 644
Emergency tire puncture
repair kit ................................. 671
Energy monitor ........ 208, 247, 253
Engine Accessory mode ................... 326
Compartment ........................ 580
Engine switch ....................... 324
Exhaust gas precautions ........ 56
Hood ..................................... 577
How to start the hybrid system .......... ...................... 324
Identification number ............ 710
If the hybrid system will not start .............................. 688
If your vehicle has to be stopped in an emergency ... 645
Ignition switch (power switch) .................... 324
Overheating .......................... 700
Power switch ........................ 324
E
Page 779 of 784

779Alphabetical index
PRIUS PRIME_OM_OM47A88U_(U)
Tail lights .................................. 338Light switch ........................... 338
Replacing light bulbs............. 640
Talk switch
*
Telephone switch*
Theft deterrent system Immobilizer system ................. 75
Tire inflation pressure ............. 603
Maintenance data ................. 716
Warning light ......................... 656
Tire information ....................... 721
Glossary................................ 726
Size ....................................... 722
Tire identification number ..... 722
Uniform Tire Quality Grading............................... 724
Tire pressure warning
system .................................... 595 Function ................................ 595
Initializing .............................. 595
Installing tire pressure warning valves and
transmitters......................... 595
Registering ID codes ............ 596
Warning light ......................... 656
Tires .......................................... 594 Chains................................... 483
Checking ............................... 594
Emergency tire puncture repair kit.............................. 673
If you have a flat tire ............. 671
Inflation pressure .................. 603
Information ............................ 721
Replacing .............................. 609
Rotating tires......................... 594
Size ....................................... 716
Snow tires ............................. 482
Tire pressure warning system ......... ....................... 595
Warning light ......................... 656 Tonneau cover ......................... 525
Tools ......................................... 610
Top tether strap ......................... 73
Total load capacity (vehicle
capacity weight) .................... 708
Towing Dinghy towing ....................... 323
Emergency towing ................ 646
Towing eyelet ....................... 649
Trailer towing ........................ 322
Toyota Safety Sense P ............ 361
TRAC (Traction Control) ......... 476
Function ................................ 476
VSC OFF switch ................... 477
Traction battery (hybrid battery)........................ 90 Air intake vent ......................... 91
Charging ............................... 102
Location .................................. 90
Specification ......................... 711
Status indicator ..................... 104
Traction motor (electric motor) ........................ 78
Trailer towing ........................... 322
Transmission Driving mode select switch ... 406
Hybrid transmission .............. 330
P position switch ................... 331
Trip meters ............................... 198
Turn signal lights .................... 336 Replacing light bulbs ............ 640
Turn signal lever ................... 336
USB port
*
T
U
*: Refer to the “NAVIGATION SYSTEM OWNER’S MANUAL”.