2023 TOYOTA PRIUS PLUG-IN HYBRID warning lights

6598-2. Steps to take in an emergency
Prius Plug-in Hybrid_OM_OM47F38E_(EE)
8
When trouble arises
If a war ning light tur ns on or a warning
buzzer sounds
Calmly perform the following actions if any of the warning lights
comes on or flashes. If a light comes on or flashes, but then
goes off, this does not necessarily indicate a malfunction in the
system. However, if this continues to occur, have the vehicle
inspected by any authorized Toyota retailer or Toyota authorized
repairer, or any reliable repairer.
Warning light and warning buzzer list
Warning lightWarning light/Details/Actions
Brake system warning light and warning buzzer (red
indicator)*1
Indicates that:
• The brake fluid level is low; or
• The brake system is malfunctioning
 Immediately stop the vehicle in a safe place and con-
tact any authorized Toyota retailer or Toyota autho-
rized repairer, or any reliable repairer. Continuing to
drive the vehicle may be dangerous.
Brake system warning light (yellow indicator)
Indicates a malfunction in:
• The regenerative braking system; or
• The electronically controlled brake system
 Have the vehicle inspected by any authorized Toyota
retailer or Toyota authorized repairer, or any reliable
repairer immediately.
Charging system warning light
Indicates a malfunction in the vehicle’s charging system
 Immediately stop the vehicle in a safe place and con-
tact any authorized Toyota retailer or Toyota autho-
rized repairer, or any reliable repairer.

6688-2. Steps to take in an emergency
Prius Plug-in Hybrid_OM_OM47F38E_(EE)
The warning lights and warning buzzers operate as follows depending
on the content of the message. If a message indicates the need for
inspection by a dealer, have the vehicle inspected by any authorized
Toyota retailer or Toyota authorized repairer, or any reliable repairer
immediately.
The operation of the warning lights and warning buzzers may differ
from those stated. In this case, perform the correction procedure
according to the displayed message.
*: A buzzer sounds the first time a message is shown on the multi-informa-
tion display.
Messages and warnings
System
warning
light
Warning
buzzer*Warning
Comes onSounds
Indicates an important situation, such
as when a system related to driving is
malfunctioning or that danger may
result if the correction procedure is not
performed
Comes on
or flashesSounds
Indicates an important situation, such
as when the systems shown on the
multi-information display may be mal-
functioning
FlashesSounds
Indicates a situation, such as when
damage to the vehicle or danger may
result
Comes onDoes not
sound
Indicates a condition, such as mal-
function of electrical components, their
condition, or indicates the need for
maintenance
FlashesDoes not
sound
Indicates a situation, such as when an
operation has been performed incor-
rectly, or indicates how to perform an
operation correctly

6698-2. Steps to take in an emergency
Prius Plug-in Hybrid_OM_OM47F38E_(EE)
8
When trouble arises
■Warning messages
The warning messages explained below may differ from the actual messages
according to operation conditions and vehicle specifications.
■ System warning lights
The master warning light does not come on or flash in the following cases.
Instead, a separate system warning light will come on along with a message
or image shown on the multi-information display.
● “Antilock Brake System Malfunction Visit Your Dealer”:
The ABS warning light comes on. ( P. 660)
● “Braking Power Low Visit Your Dealer”:
The brake system warning light (yellow) will come on. ( P. 659)
● Indicates that a door is not fully closed while the vehicle is stopped.:
The Open door warning light comes on. ( P. 6 6 2 )
■ If “Visit Your Dealer” is shown
The system or part shown on the multi- information display is malfunctioning.
Have the vehicle inspected by any authorized Toyota retailer or Toyota autho-
rized repairer, or any reliable repairer.
■ If a message about an operation is shown
● If a message about an operation of the accelerator pedal or brake pedal is
shown
• A warning message about an operation of the brake pedal may be shown
while the driving assist systems such as PCS (Pre-Collision System) or
the dynamic radar cruise control with full-speed range is operating. If a
warning message is shown, be sure to decelerate the vehicle or follow an
instruction shown on the multi-information display.
• A warning message is shown when Brake Override System operates.
( P. 310, 673)
• A warning message is shown when Drive-Start Control or Parking Sup-
port Brake function (if equipped) operates ( P. 310, 468). Follow the
instructions on the multi-information display.
● If a message about an operation of the power switch is shown
An instruction for operation of the power switch is shown when the incorrect
procedure for starting the hybrid system is performed or the power switch is
operated incorrectly. Follow the instructions shown on the multi-information
display to operate the power switch again.
● If a message about a shift operation is shown
To prevent the shift position from being selected incorrectly or the vehicle
from moving unexpectedly, the shift position may be changed automatically
( P. 331) or shift operation may be required. In this case, change the shift
position following the instructions on the multi-information display.

7349-2. Customization
Prius Plug-in Hybrid_OM_OM47F38E_(EE)
■Illumination (P. 541)
■Charge settings
■Maintenance system
FunctionDefault
settingCustomized
setting
Time elapsed before the inte-
rior lights turn off15 secondsOff
–OO 7.5 seconds
30 seconds
Operation after the power
switch is turned offOnOff––O
Operation when the doors are
unlockedOnOff––O
Operation when you approach
the vehicle with the electronic
key on your person
OnOff––O
Footwell lighting On Off – – O
Interior lights illumination con-
trolOn Off – – O
123
Charge scheduleSetting the charging schedule: P. 169
Charge currentChanging the upper limit of the charging cur-
rent: P. 140
Traction battery heaterSetting “Traction Battery Heater” on/off:
P. 145
Tire pressure warning
systemInitializing the tire pressure warning system:
P. 601

745Alphabetical index
Prius Plug-in Hybrid_OM_OM47F38E_(EE)
Child-protectors ....................... 276
Cleaning............................ 566, 572
Aluminum wheels .................. 567
Exterior.................................. 566
Front camera......................... 358
Hybrid battery (traction
battery) air intake vent ........ 573
Interior ................................... 572
Radar sensor ........................ 357
Seat belts .............................. 575
Water-repellent coating ......... 567
Clock ......................................... 194
Adjustment ............................ 200
Coat hooks ............................... 563
Combination meter .................. 194
Clock adjustment .................. 200
Main display .......................... 212
Multi-information display ....... 220
Warning lights and
indicators ............................ 204
Condenser ................................ 593
Console box ............................. 545
Consumption screen ............... 264
Coolant ..................................... 591
Capacity ................................ 720
Checking ............................... 591
Preparing and checking
before winter....................... 516
Cooling system ........................ 591
Engine overheating ............... 705
Hybrid system overheating ... 707
Cruise control
Dynamic radar cruise control
with full-speed range .......... 401
Cup holders .............................. 546
Curtain shield airbags ............... 39
Customizable features ............ 726Daytime running light
system .................................... 338
Deck board ............................... 550
Defogger
Outside rear view mirrors...... 527
Rear window ......................... 527
Windshield ............................ 527
Dimension ................................ 714
Display
Drive information................... 222
Dynamic radar cruise control
with full-speed range .......... 401
Energy monitor ............. 223, 261
Head-up display .................... 254
LTA (Lane Tracing Assist) .... 388
Main display .......................... 212
Multi-information display ....... 220
Parking Support Brake
function ............................... 468
Pre-collision warning............. 369
RCTA detection screen......... 423
RSA (Road Sign Assist)........ 396
S-IPA (Simple Intelligent
Parking Assist System) ...... 477
Toyota parking assist
sensor................................. 451
Warning messages ............... 667
Do-it-yourself maintenance .... 581
Door courtesy lights................ 541
Location ................................ 541
Wattage ................................ 723D

748Alphabetical index
Prius Plug-in Hybrid_OM_OM47F38E_(EE)
Flat tire ...................................... 675
Floor mats .................................. 30
Fluid
Brake..................................... 722
Transmission......................... 721
Washer.................................. 598
Fog lights.................................. 347
Replacing light bulbs ............. 644
Switch ................................... 347
Footwell lights.......................... 541
Front doors............................... 273
Front fog lights ........................ 347
Replacing light bulbs ............. 644
Switch ................................... 347
Front passenger’s seat belt
reminder light ........................ 662
Front position lights ................ 337
Light switch ........................... 337
Replacing light bulbs ............. 644
Front seat concentrated
airflow mode (S-FLOW)......... 525
Front seats ............................... 290
Adjustment ............................ 290
Cleaning ................................ 572
Correct driving posture............ 32
Head restraints...................... 294
Seat heaters.......................... 539
Front turn signal lights............ 335
Replacing light bulbs ............. 644
Turn signal lever ................... 335
Fuel ........................................... 351
Capacity ................................ 716
Fuel gauge ............................ 212
Information ............................ 724
Refueling ............................... 351
Type ...................................... 716
Warning light ......................... 662
Fuel consumption ............ 234, 264
Average fuel consumption .... 234
Current fuel consumption ...... 264Fuel filler door.......................... 353
Opener .................................. 353
Refueling............................... 351
When the fuel filler door
cannot be opened............... 353
Fuses ........................................ 635
Glove box ................................. 545
Hands-free system (for
cellular phone)
*
Head restraints ........................ 294
Head-up display ....................... 254
Headlights ................................ 337
AHS (Adaptive High-beam
System) .............................. 341
Automatic headlight
leveling ............................... 339
Extended Headlight
Lighting system .................. 338
Light switch ........................... 337
Replacing light bulbs............. 644
Heaters
Automatic air conditioning
system ................................ 522
Hybrid battery (traction
battery) ............................... 144
Outside rear view mirrors...... 527
Seat heaters ......................... 539
High coolant temperature
warning light .......................... 661
High mounted stoplight
Replacing .............................. 644
High-voltage components ........ 98
Hill-start assist control............ 509
Hood ......................................... 584
F
G
H

749Alphabetical index
Prius Plug-in Hybrid_OM_OM47F38E_(EE)
Hooks
Coat hooks ............................ 563
Grocery bag hook ................. 551
Retaining hooks (floor mat) ..... 30
Horn .......................................... 297
HV mode ..................................... 85
Hybrid battery (traction
battery) ..................................... 98
Air intake vent ......................... 99
Charging ............................... 111
Location .................................. 98
Specification.......................... 717
Status indicator ..................... 113
Hybrid battery (traction
battery) air intake vent ............ 99
Cleaning ................................ 573
Hybrid system ............................ 84
Brake Override System ......... 310
Consumption screen ..... 234, 264
Drive-Start Control ................ 310
Emergency shut off system..... 99
Energy monitor.............. 223, 261
High voltage components ....... 98
Hybrid System Indicator ........ 226
If the hybrid system will not
start..................................... 693
Overheating .......................... 705
Plug-in hybrid system
precautions ........................... 98
Plug-in hybrid vehicle driving
tips ...................................... 105
Power switch ......................... 323
Regenerative braking .............. 93
Starting the hybrid system .... 323
Vehicle proximity notification
system .................................. 93
Hybrid System Indicator ......... 226
Hybrid transmission ................ 329Identification ............................ 715
Engine................................... 716
Vehicle .................................. 715
Ignition switch (power
switch) .................................... 323
Auto power off function ......... 325
Changing the power switch
modes................................. 325
If your vehicle has to be
stopped in an emergency ... 649
Starting the hybrid system .... 323
Illuminated entry system ........ 543
Immobilizer system ................... 74
Indicators ................................. 204
Initialization .............................. 736
Items to initialize ................... 736
Parking Support Brake
function ............................... 470
Power windows ..................... 304
S-IPA (Simple Intelligent
Parking Assist System) ...... 498
Tire pressure warning
system ................................ 602
Inside rear view mirror ............ 299
Instrument cluster light
control .................................... 196
Interior lights............................ 541
Switch ........................... 542, 543
Wattage ................................ 723
Intrusion sensor ........................ 79
ISOFIX lower anchorages ......... 70I
*: Refer to “Navigation system Owner’s manual”.

750Alphabetical index
Prius Plug-in Hybrid_OM_OM47F38E_(EE)
Jack ........................................... 613
Positioning a floor jack .......... 586
Vehicle-equipped jack ........... 613
Jack handle .............................. 613
Jam protection function .......... 304
Keyless entry ........................... 273
Smart entry & start system.... 283
Wireless remote control ........ 273
Keys .......................................... 268
Battery-saving function ......... 285
Electronic key........................ 268
Engine switch ........................ 323
If the electronic key does not
operate properly ................. 695
If you lose your keys ..... 269, 272
Key number plate .................. 268
Keyless entry ........................ 273
Mechanical key ..................... 269
Power switch ......................... 323
Replacing the battery ............ 632
Smart entry & start system.... 283
Warning buzzer ..................... 284
Wireless remote control ........ 268
Knee airbags .............................. 39
Language (multi-information
display) ................................... 250Lever
Auxiliary catch lever .............. 584
Hood lock release lever ........ 584
Shift lever .............................. 329
Tilt and telescopic steering
lock release lever ............... 297
Turn signal lever ................... 335
Wiper lever............................ 348
License plate lights ................. 337
Light switch ........................... 337
Replacing light bulbs............. 644
Light
AHS (Adaptive High-beam
System) .............................. 341
Door courtesy lights .............. 541
Emergency flasher switch ..... 648
Extended Headlight
Lighting system .................. 338
Fog light switch ..................... 347
Headlight switch.................... 337
Illuminated entry system ....... 543
Interior lights ................. 542, 543
Interior light list...................... 541
Luggage compartment
light..................................... 279
Personal lights ...................... 542
Replacing light bulbs............. 639
Shift lever light ...................... 541
Turn signal lever ................... 335
Vanity lights .......................... 555
Wattage ................................ 723
Light bulbs
Replacing .............................. 639
Wattage ................................ 723
LTA (Lane Tracing Assist) ...... 379
Luggage cover ......................... 553
J
K
L