2023 TOYOTA PRIUS PLUG-IN HYBRID ABS

6427-3. Do-it-yourself maintenance
Prius Plug-in Hybrid_OM_OM47F38E_(EE)
Install a new light bulb then
install the bulb base to the
light unit by inserting it and
turning the bulb base clock-
wise.
Reinstall the cover to the its original position, and attach the clip
inside of the cover.
Attach the clip on the cover,
then press the center portion
of the clip to lock.
Reinsert the cover end to the
rear bumper.
Make sure to secure the 2 tabs
on the cover end.
6
7
8

6608-2. Steps to take in an emergency
Prius Plug-in Hybrid_OM_OM47F38E_(EE)
Low engine oil pressure warning light
(warning buzzer)*2
Indicates that the engine oil pressure is too low
 Immediately stop the vehicle in a safe place and con-
tact any authorized Toyota retailer or Toyota autho-
rized repairer, or any reliable repairer.
Malfunction indicator lamp
Indicates a malfunction in:
• The hybrid system;
• The electronic engine control system; or
• The electronic throttle control system
 Have the vehicle inspected by any authorized Toyota
retailer or Toyota authorized repairer, or any reliable
repairer immediately.
SRS warning light
Indicates a malfunction in:
• The SRS airbag system; or
• The seat belt pretensioner system
 Have the vehicle inspected by any authorized Toyota
retailer or Toyota authorized repairer, or any reliable
repairer immediately.
ABS warning light
Indicates a malfunction in:
• The ABS; or
• The brake assist system
 Have the vehicle inspected by any authorized Toyota
retailer or Toyota authorized repairer, or any reliable
repairer immediately.
(Red/yellow)
Electric power steering system warning light (warning
buzzer)
Indicates a malfunction in the EPS (Electric Power Steer-
ing) system
 Have the vehicle inspected by any authorized Toyota
retailer or Toyota authorized repairer, or any reliable
repairer immediately.
Warning lightWarning light/Details/Actions

6618-2. Steps to take in an emergency
Prius Plug-in Hybrid_OM_OM47F38E_(EE)
8
When trouble arises
(Flashes or illuminates)
PCS warning light
• When a buzzer sounds simultaneously:
Indicates a malfunction has occurred in the PCS (Pre-
Collision System).
 Have the vehicle inspected by any authorized Toyota
retailer or Toyota authorized repairer, or any reliable
repairer immediately.
• When a buzzer does not sound:
The PCS (Pre-Collision System) has become temporar-
ily unavailable, corrective action may be necessary.
 Follow the instructions displayed on the multi-infor-
mation display. ( P. 366, 667)
If the PCS (Pre-Collision System) or VSC (Vehicle Stability
Control) system is disabled, the PCS warning light will illu-
minate.
 P. 378
(Orange)
LTA indicator (warning buzzer)
Indicates a malfunction in the LTA (Lane Tracing Assist)
 Follow the instructions displayed on the multi-infor-
mation display. ( P. 394)
Slip indicator light
Indicates a malfunction in:
• The VSC system;
• The TRC system; or
• The hill-start assist control system
 Have the vehicle inspected by any authorized Toyota
retailer or Toyota authorized repairer, or any reliable
repairer immediately.
The light will flash when the ABS, VSC or TRC system is
operating.
High coolant temperature warning light
• When the light flashes:
Indicates that the engine coolant temperature is too high
The light changes from a flashing to a solid light when
the temperature further increases
 Immediately stop the vehicle in a safe place.
( P. 705)
• When the light comes on without flashing:
Indicates a malfunction in the exhaust heat recirculator
system
 Have the vehicle inspected by any authorized Toyota
retailer or Toyota authorized repairer, or any reliable
repairer immediately.
Warning lightWarning light/Details/Actions

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.

742Alphabetical index
Prius Plug-in Hybrid_OM_OM47F38E_(EE)
Alphabetical index
A/C............................................. 522
Air conditioning filter.............. 625
Automatic air conditioning
system ................................ 522
Blower customization ............ 526
Eco score (A/C score) ........... 244
Front seat concentrated
airflow mode (S-FLOW)...... 525
Humidity sensor .................... 534
Remote Air Conditioning
System................................ 535
ABS (Anti-lock Brake
System) .................................. 509
Function ................................ 509
Warning light ......................... 660
AHS (Adaptive High-beam
System) .................................. 341
Air conditioning filter .............. 625
Air conditioning system .......... 522
Air conditioning filter.............. 625
Automatic air conditioning
system ................................ 522
Blower customization ............ 526
Eco score (A/C score) ........... 244
Front seat concentrated
airflow mode (S-FLOW)...... 525
Humidity sensor .................... 534
Remote Air Conditioning
System................................ 535
Air intake vent ............................ 99
Cleaning ................................ 573Airbag manual on-off
system ...................................... 51
Airbags ....................................... 39
Airbag manual on-off
system .................................. 51
Airbag operating conditions .... 45
Airbag precautions for your
child ...................................... 41
Airbag warning light .............. 660
Correct driving posture ........... 32
Curtain shield airbag
operating conditions ............. 45
Curtain shield airbag
precautions........................... 43
General airbag precautions .... 41
Locations of airbags................ 39
Modification and disposal of
airbags.................................. 44
Side airbag operating
conditions ............................. 45
Side airbag precautions .......... 42
Side and curtain shield
airbags operating
conditions ............................. 45
Side and curtain shield
airbags precautions .............. 43
SRS airbags............................ 39
Alarm .......................................... 76
Alarm ...................................... 76
Intrusion sensor ...................... 79
A

743Alphabetical index
Prius Plug-in Hybrid_OM_OM47F38E_(EE)
Antenna
Smart entry & start system.... 283
Anti-lock brake system
(ABS) ...................................... 509
Function ................................ 509
Warning light ......................... 660
Approach warning ................... 411
Armrest ..................................... 563
Assist grips .............................. 564
Audio input
*
Audio system*
Automatic air conditioning
system .................................... 522
Air conditioning filter.............. 625
Automatic air conditioning
system ................................ 522
Blower customization ............ 526
Eco score (A/C score) ........... 244
Front seat concentrated
airflow mode (S-FLOW)...... 525
Humidity sensor .................... 534
Remote Air Conditioning
System................................ 535
Automatic headlight leveling
system .................................... 339
Automatic light control
system .................................... 338
Auxiliary boxes ........................ 548
Back door ................................. 278
Back-up light ............................ 639
Replacing light bulbs ............. 640
Wattage................................. 723Battery (12-volt battery) .......... 594
Battery checking ................... 594
Exchanging ........................... 702
If the 12-volt battery is
discharged .......................... 699
Preparing and checking
before winter....................... 516
Replacing .............................. 702
Warning light ......................... 659
Battery (traction battery)........... 98
Air intake vent ......................... 99
Charging ............................... 111
Location .................................. 98
Specification ......................... 717
Status indicator ..................... 113
Blind Spot Monitor (BSM) ....... 423
Blind Spot Monitor function ... 439
Rear Crossing Traffic Alert
function ............................... 443
Bluetooth
®*
Bottle holders .......................... 547
Brake
Fluid ...................................... 722
Parking brake........................ 336
Regenerative braking.............. 93
Warning light ......................... 659
Brake assist ............................. 509
Brake Override System ........... 310
Break-in tips ............................. 311
Brightness control
Instrument cluster light
control................................. 196
BSM (Blind Spot Monitor) ....... 423
Blind Spot Monitor function ... 439
Rear Crossing Traffic Alert
function ............................... 443
B
*: Refer to “Navigation system Owner’s manual”.

758Alphabetical index
Prius Plug-in Hybrid_OM_OM47F38E_(EE)
Warning lights .......................... 205
ABS ....................................... 660
Brake Override System ......... 663
Brake system ........................ 659
Charging system ................... 659
Drive-Start Control ................ 663
Driver’s seat belt reminder
light ..................................... 662
Electronic engine control
system ................................ 660
Electric power steering
system ................................ 660
Front passenger’s seat belt
reminder light...................... 662
High coolant temperature...... 661
Low engine oil pressure ........ 660
Low fuel level ........................ 662
Malfunction indicator lamp .... 660
Master warning light .............. 662
Open door ............................. 662
Parking Support Brake
function ............................... 663
PCS....................................... 661
PKSB OFF indicator.............. 662
Rear passengers’ seat belt
reminder light...................... 662
Seat belt reminder light ......... 662
Slip indicator ......................... 661
SRS....................................... 660
Tire pressure ......................... 663
Warning messages .................. 667Warning reflector storage
space ...................................... 552
Washer...................................... 348
Checking ............................... 598
Preparing and checking
before winter....................... 516
Switch ................................... 348
Washing and waxing ............... 566
Water-repellent coating........... 567
Wheels ...................................... 610
Replacing wheels.................. 612
Size ....................................... 723
Window glasses....................... 303
Window lock switch ................ 303
Windows ................................... 303
Power windows ..................... 303
Rear window defogger .......... 527
Washer ................................. 348
Windshield wipers ................... 348
Handling the wiper arms ....... 571
Rain-sensing windshield
wipers ................................. 348
Replacing the wiper insert .... 629
Winter driving tips ................... 516
Wiper insert replacement........ 629
Wireless charger...................... 557
Wireless remote control.......... 268
Battery-Saving Function ....... 285
Locking/Unlocking................. 273
Remote Air Conditioning
System ............................... 535
Replacing the battery ............ 632