2023 TOYOTA PRIUS check engine light

495
6Maintenance and care
PRIUS_OM_OM47F32E_(EE)6-1. Maintenance and care
Cleaning and protecting
the vehicle exterior .......... 496
Cleaning and protecting
the vehicle interior ........... 502
6-2. Maintenance
Maintenance
requirements.................... 505
6-3. Do-it-yourself maintenance
Do-it-yourself service
precautions ...................... 508
Hood .................................. 511
Positioning a floor jack ....... 513
Engine compartment.......... 514
Tires ................................... 528
Tire inflation pressure ........ 537
Wheels ............................... 539
Air conditioning filter .......... 542
Cleaning the hybrid battery
(traction battery) air intake
vent and filter ................... 545
Wiper insert
replacement ..................... 550
Electronic key battery ........ 554
Checking and replacing
fuses ................................ 557
Light bulbs ......................... 561

5837-2. Steps to take in an emergency
PRIUS_OM_OM47F32E_(EE)
7
When trouble arises
High coolant temperature warning light
(vehicles without exhaust heat recirculator system)
Indicates that the engine coolant temperature is too high
Changes from a flashing to a solid light when the engine
coolant temperature increases
 Immediately stop the vehicle in a safe place.
( P. 645)
High coolant temperature warning light
(vehicles with exhaust h eat recirculator system)
• 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. 645)
• 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.
(Flashes) (If equipped)
PKSB OFF indicator
Indicates a malfunction in the Parking Support Brake func-
tion
 Have the vehicle inspected by any authorized Toyota
retailer or Toyota authorized repairer, or any reliable
repairer.
The warning light will operate as follows, even when the
system is not malfunctioning:
• The light will come on when the Parking Support Brake
function is turned off ( P. 396)
• The light will come on when the Parking Support Brake
function is operating ( P. 400)
• The light will flash when the system cannot temporarily
be used ( P. 402)
Open door warning light (warning buzzer)*3
Indicates that a door is not fully closed
 Check that all the doors are closed.
Low fuel level warning light
Indicates that remaining fuel is approximately 6.4 L
(1.7 gal., 1.4 Imp.gal.) or less
 Refuel the vehicle.
Warning lightWarning light/Details/Actions

6417-2. Steps to take in an emergency
PRIUS_OM_OM47F32E_(EE)
7
When trouble arises
Once the hybrid system has started, remove the jumper cables in
the exact reverse order from which they were connected.
To install the engine cover, conduct the removal procedure in
reverse. After installing, check that the fixed pins are inserted
securely.
Once the hybrid system starts, have the vehicle inspected at any
authorized Toyota retailer or Toyota authorized repairer, or any reliable
repairer as soon as possible.
■ When opening the cover of the positive (+) battery terminal
 P. 523
■ 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 running
at a low speed for an extended period, such as in heavy traffic.
■ When the 12-volt battery is removed or discharged
● Information stored in the ECU is cleared. When the 12-volt battery is
depleted, have the vehicle inspected at any authorized Toyota retailer or
Toyota authorized repairer, or any reliable repairer.
● Some systems may require initialization. (P. 679)
■ When removing the 12-volt battery terminals
When the 12-volt battery terminals are removed, the information stored in the
ECU is cleared. Before removing the 12-volt battery terminals, contact any
authorized Toyota retailer or Toyota authorized repairer, or any reliable
repairer.
■ 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 recharges automatically while the hybrid system is operating.)
8
9

688Alphabetical index
PRIUS_OM_OM47F32E_(EE)
Care ................................... 496, 502
Aluminum wheels .................. 497
Exterior.................................. 496
Front camera......................... 285
Interior ................................... 502
Radar sensor ........................ 284
Seat belts .............................. 503
Water-repellent coating ......... 497
Cargo hooks ............................. 480
Catch protection function ....... 211
Chains ....................................... 453
Child restraint system ............... 54
Child restraint system
installation method................ 67
Fixed with a seat belt .............. 68
Fixed with an ISOFIX lower
anchorage............................. 70
Points to remember................. 54
Riding with children ................. 53
Using a top tether
anchorage............................. 72
Child safety ................................ 53
12-volt battery precautions.... 524
Airbag precautions .................. 41
Back door precautions .......... 184
Child restraint system ............. 54
How your child should wear
the seat belt .......................... 36
Installing child restraints.......... 67
Moon roof precautions .......... 218
Power window lock switch .... 210
Power window precautions ... 213
Rear door child-protectors .... 180
Removed key battery
precautions ......................... 556
Riding with children ................. 53
Seat belt precautions .............. 69
Seat heater precautions ........ 468Child-protectors....................... 180
Cleaning ........................... 496, 502
Aluminum wheels.................. 497
Exterior ................................. 496
Front camera ........................ 285
Hybrid battery (traction
battery) air intake vent ........ 545
Interior................................... 502
Radar sensor ........................ 284
Seat belts .............................. 503
Water-repellent coating......... 497
Clock ......................................... 100
Adjustment ............................ 106
Coat hooks ............................... 493
Combination meter .................. 100
Clock adjustment .................. 106
Main display .......................... 117
Multi-information display ....... 127
Warning lights and
indicators ............................ 110
Condenser ................................ 520
Console box ............................. 474
Coolant ..................................... 518
Capacity ................................ 662
Checking ............................... 518
Preparing and checking
before winter....................... 452
Cooling system ........................ 518
Engine overheating ............... 645
Hybrid system overheating ... 647
Consumption screen ............... 166
Cruise control
Cruise control........................ 346
Dynamic radar cruise control
with full-speed range .......... 329
Cup holders.............................. 475
Curtain shield airbags ............... 39
Customizable features ............ 670
C

690Alphabetical index
PRIUS_OM_OM47F32E_(EE)
ECB (Electronically
Controlled Brake System) .... 441
Eco drive mode ........................ 351
Electric motor (traction motor)
Location .................................. 79
Specification.......................... 657
Electric Power Steering
(EPS) ....................................... 442
Function ................................ 442
Warning light ......................... 581
Electronic key .......................... 172
Battery-saving function ......... 189
If the electronic key does not
operate properly ................. 636
Replacing the battery ............ 554
Electronically Controlled
Brake System (ECB).............. 441
Emergency brake signal ......... 442
Emergency flashers................. 568
Emergency brake signal ....... 442
Emergency tire puncture
repair kit ................................. 602
Emergency, in case of
If a warning buzzer sounds ... 580
If a warning light turns on ...... 580
If a warning message is
displayed ............................ 589
If the 12-volt battery is
discharged .......................... 639
If the electronic key does not
operate properly ................. 636
If the hybrid system will not
start..................................... 634
If the vehicle becomes
stuck ................................... 650
If the vehicle is submerged or
water on the road is
rising ................................... 570If you have a flat tire ..... 598, 618
If you lose your keys ..... 173, 176
If you think something is
wrong.................................. 579
If your vehicle has to be
stopped in an emergency ... 569
If your vehicle needs to be
towed .................................. 572
If your vehicle overheats ....... 645
Energy monitor ................ 130, 166
Engine....................................... 656
Accessory mode ................... 246
Compartment ........................ 514
Engine switch (power
switch) ................................ 244
Exhaust gas precautions ........ 50
Hood ..................................... 511
How to start the hybrid
system ................................ 244
Identification number ............ 656
If the hybrid system will not
start .................................... 634
If your vehicle has to be
stopped in an emergency ... 569
Ignition switch (power
switch) ................................ 244
Overheating .......................... 645
Power switch......................... 244
Engine coolant ......................... 518
Capacity ................................ 662
Checking ............................... 518
Preparing and checking
before winter....................... 452
E

691Alphabetical index
PRIUS_OM_OM47F32E_(EE)
Engine oil.................................. 515
Capacity ................................ 658
Checking ............................... 515
Oil pressure warning light ..... 581
Preparing and checking
before winter....................... 452
Engine switch (power
switch) .................................... 244
Auto power off function ......... 246
Changing the power switch
modes................................. 246
If your vehicle has to be
stopped in an emergency ... 569
Starting the hybrid system .... 244
EPS (Electric Power
Steering) ................................. 442
Function ................................ 442
Warning light ......................... 581
ERA-GLONASS .......................... 74
EV drive mode .......................... 250
EV indicator .............................. 132
EVAK ........................................... 74
Exhaust gas precautions .......... 50
Extended Headlight
Lighting system ..................... 263First-aid kit storage space ...... 481
Flat tire.............................. 598, 618
Floor mat .................................... 30
Fluid
Brake .................................... 664
Transmission ........................ 663
Washer ................................. 526
Fog lights ................................. 270
Replacing light bulbs............. 565
Switch ................................... 270
Footwell lights ......................... 470
Front camera ............................ 283
Front doors .............................. 177
Front fog lights ........................ 270
Replacing light bulbs............. 565
Switch ................................... 270
Front passenger’s seat belt
reminder light ........................ 584
Front position lights ................ 261
Light switch ........................... 261
Replacing light bulbs............. 565
Front seat concentrated
airflow mode (S-FLOW) ........ 461
Front seats ............................... 194
Adjustment ............................ 194
Cleaning................................ 502
Correct driving posture ........... 32
Head restraints ..................... 199
Seat heaters ......................... 468
Front turn signal lights ........... 259
Replacing light bulbs............. 565
Turn signal lever ................... 259F