2023 TOYOTA PRIUS engine overheat

15Pictorial index
PRIUS_OM_OM47F32E_(EE)Windshield wipers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 271
Precautions against winter season . . . . . . . . . . . . . . . . . . . . . P. 452
Precautions against car wash (vehicles with rain-sensing
windshield wipers) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 498
Replacing the wiper insert . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 550
Fuel filler door . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 277
Refueling method . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 277
Fuel type/fuel tank capacity . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 657
Tires . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 528
Tire size/inflation pressure . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 665
Winter tires/tire chain . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 452
Checking/rotation/tire pressure warning system
*1 . . . . . . . . . P. 528
Coping with flat tires . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 598, 618
Hood . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 511
Opening . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 511
Engine oil . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 658
Coping with overheat . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 645
Headlights/front position lights/
daytime running lights . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 261
Front fog lights/rear fog light
*2 . . . . . . . . . . . . . . . . . . . . . . P. 270
Turn signal lights . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 259
Tail lights . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 261
License plate lights . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 261
Back-up light
*2
Shifting the shift lever to R. . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 253
4
5
6
7
Light bulbs of the exterior lights for driving
(Replacing method: P. 561, Watts: P. 667)
*1: If equipped
*2: They may be located on the opposite side depending on the target region.
8
9
10
11
12
13

1162. Instrument cluster
PRIUS_OM_OM47F32E_(EE)
WARNING
■If a safety system warning light does not come on
Should a safety system light such as the ABS and SRS warning light not
come on when you start the hybrid system, this could mean that these sys-
tems are not available to help protect you in an accident, which could result
in death or serious injury. Have the vehicle inspected by any authorized
Toyota retailer or Toyota authorized repairer, or any reliable repairer imme-
diately if this occurs.
NOTICE
■ To prevent damage to the engine and its components
The engine may be overheating if the high coolant temperature warning
light comes on or flashes. In this case, immediately stop the vehicle in a
safe place, and check the engine after it has cooled completely. ( P. 645)

2244-1. Before driving
PRIUS_OM_OM47F32E_(EE)
WARNING
Observe the following precautions.
Failure to do so may result in death or serious injury.
■ When driving the vehicle
● Use engine braking (shift position B instead of shift position D) to maintain
a safe speed when driving down a steep hill.
Using the brakes continuously may cause the brakes to overheat and lose
effectiveness. ( P. 2 5 4 )
● Do not adjust the positions of the steering wheel, the seat, or the inside or
outside rear view mirrors while driving.
Doing so may result in a loss of vehicle control.
● Always check that all passengers’ arms, head or other parts of their body
are not outside the vehicle.
● AWD models: Do not drive the vehicle off-road.
This is not an AWD vehicle designed fo r off-road driving. Proceed with all
due caution if it becomes unavoidable to drive off-road.
● Do not drive across river crossings or through other bodies of water.
This may cause electric/electronic components to short circuit, damage
the hybrid system or cause other serious damage to the vehicle.
■ When driving on slippery road surfaces
● Sudden braking, acceleration and steering may cause tire slippage and
reduce your ability to control the vehicle.
● Sudden acceleration, engine braking due to shifting, or changes in engine
speed could cause the vehicle to skid, resulting in an accident.
● After driving through a puddle, depress the brake pedal to make sure that
the brakes are functioning properly. Wet brake pads may prevent the
brakes from functioning properly. If the brakes on only one side are wet
and not functioning properly, steering control may be affected.

2264-1. Before driving
PRIUS_OM_OM47F32E_(EE)
WARNING
Observe the following precautions.
Failure to do so may result in death or serious injury.
■ If you hear a squealing or scraping noise (brake pad wear indicators)
Have the brake pads checked and replaced by any authorized Toyota
retailer or Toyota authorized repairer, or any reliable repairer as soon as
possible.
Rotor damage may result if the pads are not replaced when needed.
It is dangerous to drive the vehicle w hen the wear limits of the brake pads
and/or those of the brake discs are exceeded.
■ When the vehicle is stopped
● Do not depress the accelerator pedal unnecessarily.
If the shift position is in any position other than P or N, the vehicle may
accelerate suddenly and unexpectedly, causing an accident.
● In order to prevent accidents due to the vehicle rolling away, always keep
depressing the brake pedal while stopped with the “READY” indicator is
illuminated, and apply the parking brake as necessary.
● If the vehicle is stopped on an incline, in order to prevent accidents caused
by the vehicle rolling forward or backward, always depress the brake pedal
and securely apply the parking brake as needed.
● Avoid revving or racing the engine.
Running the engine at high speed while the vehicle is stopped may cause
the exhaust system to overheat, which could result in a fire if combustible
material is nearby.

2414-1. Before driving
4
Driving
PRIUS_OM_OM47F32E_(EE)■
Transmission information
To maintain engine braking efficiency and charging system perfor-
mance when using engine braking, do not use the transmission in
D. Shift the shift position to B.
■If the engine overheats
Towing a loaded trailer up a long, steep incline in temperatures
exceeding 30C (85F) may result in the engine overheating. If the
engine coolant temperature gauge indicates that the engine is over-
heating, turn the air conditioning off immediately, leave the road and
stop the vehicle in a safe place. (P. 645)
■When parking the vehicle
Always place wheel chocks under the wheels of both the vehicle
and trailer. Firmly set the parking brake and shift the shift position to
P.

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

695Alphabetical index
PRIUS_OM_OM47F32E_(EE)
Multi-information display ........ 127
Air conditioning system
settings screen ................... 148
Audio system-linked
display ................................ 147
Display contents.................... 127
Drive information ................... 129
Driving assist system
information .......................... 152
Dynamic radar cruise control
with full-speed range .......... 329
Energy monitor...................... 130
Language .............................. 156
LTA (Lane Tracing Assist) .... 316
Parking Support Brake
function ............................... 400
Pre-collision warning ............. 297
RCTA detection screen ......... 356
RSA (Road Sign Assist) ........ 324
S-IPA (Simple Intelligent
Parking Assist System)....... 409
Settings display ..................... 153
Toyota parking
assist-sensor ...................... 382
Warning message display ..... 152
Multimedia system
*
Navigation system*
Odometer.................................. 121
Oil
Engine oil .............................. 658
Opener
Back door.............................. 182
Fuel filler door ....................... 279
Hood ..................................... 511
Outside rear view mirrors ....... 207
Adjustment ............................ 207
BSM (Blind Spot Monitor) ..... 356
Folding .................................. 207
Outside rear view mirror
defoggers ........................... 463
Outside temperature
display ............................ 118, 120
Overhead console ................... 477
Overheating.............................. 645
N
O
*: Refer to “Navigation and multimedia system Owner’s manual”.