2021 TOYOTA PRIUS Owners Manual (in English)

721What to do if... (Troubleshooting)
PRIUS_OM_OM47E09U_(U)
●Did you press the power switch while firmly depressing the brake pedal?
(P. 245)
●Is the shift position in P? ( P. 256)
●Is the electronic key anywhere detectable inside the vehicle? ( P. 196)
●Is the electronic key battery weak or depleted?
In this case, the hybrid system can be started in a temporary way.
(P. 648)
●Is the 12-volt battery discharged? ( P. 650)
●Is the window lock switch pressed?
The power windows except for the one at the driver’s seat canno t be oper-
ated if the window lock switch is pressed. ( P. 218)
●The auto power off function will be operated if the vehicle is left in
ACCESSORY or ON mode (the hybrid system is not operating) for a
period of time. ( P. 247)
If you think something is wrong
The hybrid system does not start
The windows do not open or close by operating the power
window switches
The power switch is turned off automatically

722What to do if... (Troubleshooting)
PRIUS_OM_OM47E09U_(U)
●The seat belt reminder light is flashing
Are the driver and the front passenger wearing the seat belts? (P. 597)
●The parking brake indicator is on
Is the parking brake released? ( P. 262)
Depending on the situation, other types of warning buzzer may a lso sound.
( P. 592, 603)
●Is the electronic key left inside the vehicle?
Check the message on the multi-information display. ( P. 603)
●When a warning light turns on or a warning message is displayed , refer to
P. 592, 603.
A warning buzzer sounds during driving
A warning buzzer sounds w hen leaving the vehicle
A warning light turns on or a warning message is displayed

723What to do if... (Troubleshooting)
PRIUS_OM_OM47E09U_(U)
●Vehicles without spare tire
Stop the vehicle in a safe place and repair the flat tire temporarily with the
emergency tire puncture repair kit. ( P. 6 1 1 )
●Vehicles with spare tire
Stop the vehicle in a safe place and replace the flat tire with the spare tire.
( P. 631)
●Try the procedure for when the vehicle becomes stuck in mud, di rt, or
snow. ( P. 661)
When a problem has occurred
If you have a flat tire
The vehicle becomes stuck

724Alphabetical index
PRIUS_OM_OM47E09U_(U)
Alphabetical index
A/C .................................... 436, 446Air conditioning eco
mode .......................... 439, 449
Air conditioning filter ............. 548
Automatic air conditioning system .... 436, 446
Eco score (A/C score)........... 148
Front seat concentrated airflow mode
(S-FLOW) ................... 438, 448
ABS (Anti-lock Brake
System) .................................. 420 Function ................................ 420
Warning light ......................... 593
ACA (Active Cornering Assist) ................................... 420
Active Cornering Assist
(ACA) ...................................... 420
AHB (Automatic High Beam) ..................................... 268
Adaptive Front-lighting System (AFS) ......................... 265
AFS (Adaptive Front-lighting
System) .................................. 265
Air conditioning filter .............. 548
Air conditioning system ............................ 436, 446
Air conditioning eco mode .......................... 439, 449
Air conditioning filter ............. 548
Automatic air
conditioning system .... 436, 446
Eco score (A/C score)........... 148
Front seat concentrated
airflow mode
(S-FLOW) ................... 438, 448
Air intake vent ............................ 89 Cleaning................................ 551 Airbags ....................................... 35
Airbag operating conditions .... 43
Airbag precaut ions for your
child ...................................... 38
Airbag warning light .............. 593
Correct driving posture ........... 28
Curtain shield airbag operating conditions ............. 44
Curtain shield airbag precautions........................... 41
Front passenger occupant
classification syst em ............ 49
General airbag precautions .... 38
Locations of airbags ............... 35
Modification and disposal of airbags ................................. 42
Side airbag operating
conditions ............................. 44
Side airbag precautions .......... 40
Side and curtain shield airbags operating
conditions ............................. 44
Side and curtain shield
airbags precautions .............. 41
SRS airbag instructions for Canadian owners ............... 707
SRS airbags ........................... 35
Anchor brackets ........................ 72
Antenna Smart key system ................. 196
A

725Alphabetical index
PRIUS_OM_OM47E09U_(U)
Anti-lock brake system (ABS) ...................................... 420
Function ................................ 420
Warning light ......................... 593
Approach warning ................... 336
Armrest ..................................... 486
Assist grips .............................. 487
Audio input
*
Audio system*
Automatic air conditioning system ............................ 436, 446
Air conditioning eco mode .......................... 439, 449
Air conditioning filter ............. 548
Automatic air conditioning
system ....... ................. 436, 446
Eco score (A/C score)........... 148
Front seat concentrated
airflow mode
(S-FLOW) ................... 438, 448
Automatic door locking and unlocking systems ................ 188
Automatic High Beam
(AHB) ...................................... 268
Automatic light control system .................................... 266
AUX port
*
Auxiliary box ............................ 465 Back door ................................. 191
Back-up light............................ 569
Replacing light bulb .............. 572
Wattage ................................ 674
Battery (12-volt battery) .......... 524
Battery checking ................... 524
If the 12-volt battery is discharged.......................... 650
Preparing and checking before winter ...................... 430
Replacing.............................. 653
Warning light......................... 592
Battery (traction battery) .......... 88 Air intake vent ......................... 89
Location .................................. 88
Specification ......................... 667
Blind Spot Monitor (BSM) ....... 349
Blind Spot Monitor function............................... 354
Rear Cross Traffic Alert
function............................... 357
Bluetooth
®*
B
*: Refer to “NAVIGATION SYSTEM OWNER’S MANUAL” or “MULTIMEDIA OWNER’S MANUAL”.

726Alphabetical index
PRIUS_OM_OM47E09U_(U)
Bottle holders .......................... 464
BrakeFluid ...................................... 671
Parking brake........................ 262
Regenerative braking.............. 86
Warning light ......................... 592
Brake assist ............................. 420
Brake Override System ........... 229
Break-in tips ............................. 230
Brightness control Instrument cluster light
control................................. 100
BSM (Blind Spot Monitor) ....... 349 Blind Spot Monitor
function ............................... 354
Rear Cross Traffic Alert function ............................... 357
Care................................... 496, 502 Aluminum wheels.................. 497
Exterior ................................. 496
Front camera ........................ 291
Interior................................... 502
Radar sensor ........................ 290
Seat belts .............................. 503
Water-repellent coating......... 497
Cargo capacity ......................... 242
Cargo hooks............................. 468 Catch protection function....... 219
CD player
*
Chains ...................................... 431
Child restraint system............... 56
Fixed with a LATCH
system .......... ..................... ... 69
Fixed with a seat belt .............. 63
Front passenger occupant classification syst em ............ 49
Points to remember ................ 57
Riding with children ................ 55
Types of child restraint system installation method ............... 59
Using an anchor bracket......... 72
Child safety ................................ 55 12-volt battery precautions ... 526
Airbag precautions.................. 38
Back door precautions .......... 193
Child restraint system ............. 56
How your child should wear the seat belt.......................... 31
Installing child restraints ......... 59
Moon roof precautions .......... 226
Power window lock switch .... 218
Power window precautions ... 221
Rear door child-protectors .... 188
Removed key battery precautions......................... 562
Riding with children ................ 55
Seat belt extender precautions........................... 34
Seat belt precautions .............. 68
Seat heater precautions ....... 456
Child-protectors ...................... 188
C

727Alphabetical index
PRIUS_OM_OM47E09U_(U)
CleaningAluminum wheels.................. 497
Exterior ................................. 496
Front camera ........................ 291
Hybrid battery (traction
battery) air intake vent ........ 551
Interior................................... 502
Radar sensor ........................ 290
Seat belts .............................. 503
Water-repellent coating......... 497
Clock ........................................... 98
Adjustment ............................ 103
Coat hooks ............................... 486
Combination meter .................... 98 Clock adjustment .................. 103
Main display .......................... 115
Multi-information display ....... 124
Warning lights and indicators ............................ 107
Condenser ................................ 524
Console box ............................. 462
Consumption screen ....... 165, 172
Coolant ..................................... 522
Capacity ................................ 670
Checking ............................... 522
Preparing and checking before winter....................... 430
Cooling system ........................ 522 Engine overheating ............... 656
Hybrid system overheating ... 658
Cruise control Cruise control........................ 342
Dynamic radar cruise control with full-speed range .......... 326
Cup holders.............................. 463
Curtain shield airbags ............... 35
Customizable features ............ 690 Daytime running light
system.................................... 266
Deck board ............................... 467
Defogger Outside rear view
mirrors ........................ 440, 450
Rear window ................. 440, 450
Windshield .................... 440, 450
Dimension ................................ 664
Dinghy towing.......................... 244
Display BSM (Blind Spot Monitor) ..... 349
Drive information .................. 126
Dynamic radar cruise control with full-speed range .......... 326
Energy monitor ..... 127, 165, 172
Head-up display.................... 158
Intuitive parking assist .......... 363
LTA (Lane Tracing Assist) .... 316
Main display.......................... 115
Multi-information display ....... 124
Parking Support Brake function............................... 379
RCTA detection screen ........ 349
RSA (Road Sign Assist) ....... 323
S-APGS (Simple Advanced Parking Guidance
System) .............................. 390
Pre-collision warning ............ 297
Trip information..................... 119
Warning messages ............... 603
Do-it-yourself maintenance .... 512
Door courtesy lights ............... 458 Location ................................ 458
Wattage ................................ 674D
*: Refer to “MULTIMEDIA OWNER’S MANUAL”.

728Alphabetical index
PRIUS_OM_OM47E09U_(U)
DoorsAutomatic door locking and
unlocking system ................ 188
Back door.............................. 191
Door glasses ......................... 218
Door lock............................... 185
Open door warning buzzer ... 189
Open door warning light........ 594
Outside rear view mirrors...... 216
Rear door child-protectors .... 188
Side doors............................. 185
Side windows ........................ 218
Drive information ..................... 126
Drive-Start Control .................. 230
Driver’s seat belt reminder light......................................... 595
Driving ...................................... 228
Break-in tips .......................... 230
Correct driving posture ........... 28
Driving in the rain .................. 229
Driving mode select switch ... 347
Hybrid vehicle driving tips ..... 427
Procedures ........................... 228
Winter drive tips .................... 430
Dynamic radar cruise control with full-speed range ............ 326
ECB (Electronically Controlled Brake System) .... 420
Eco drive mode ........................ 347
EDR (Event data recorder) ........ 11
Electric motor (traction motor) Location .................................. 84
Specification ......................... 667 Electric Power Steering
(EPS) ...................................... 421
Function ................................ 421
Warning light......................... 593
Electronic key .......................... 180
Battery-saving function ......... 198
If the electronic key does not operate properly ........... 647
Replacing the battery............ 560
Electronically Controlled Brake System (ECB) ............. 420
Emergency flashers ................ 580
Emergency tire puncture repair kit ................................. 613
Emergency, in case of If a warning buzzer sounds... 592
If a warning light turns on ..... 592
If a warning message is displayed ............................ 603
If the 12-volt battery is
discharged.......................... 650
If the electronic key does not operate properly ........... 647
If the hybrid system will not start .............................. 645
If the vehicle becomes stuck ................................... 661
If the vehicle is trapped in rising water ......................... 582
If you have a flat tire ..... 611, 631
If you lose your keys ..... 181, 184
If you think something is wrong .............................. 591
If your vehicle has to be stopped in an emergency ... 581
If your vehicle needs to be
towed.................................. 584
If your vehicle overheats....... 656
Energy monitor ........ 127, 165, 172
E