2023 TOYOTA PRIUS ignition

6497-2. Steps to take in an emergency
PRIUS_OM_OM47F32E_(EE)
7
When trouble arises
WARNING
■To prevent an accident or injury when inspecting under the hood of
your vehicle
Observe the following precautions.
Failure to do so may result in serious injury such as burns.
● If steam is seen coming from under the hood, do not open the hood until
the steam has subsided. The engine compartment may be very hot.
● After the hybrid system has been turned off, check that the “Accessory”,
“Ignition ON” or mileage display ( P. 118, 120) on the main display and
the “READY” indicator are off.
When the hybrid system is operating, the gasoline engine may automati-
cally start, or the cooling fans may suddenly operate even if the gasoline
engine stops. Do not touch or approach rotating parts such as the fan,
which may lead to fingers or clothing (especially a tie, a scarf or a muffler)
getting caught, resulting in serious injury.
● Do not loosen the coolant reservoir caps while the hybrid system and radi-
ator are hot.
High temperature steam or coolant could spray out.
NOTICE
■ When adding engine/power control unit coolant
Add coolant slowly after the hybrid system has cooled down sufficiently.
Adding cool coolant to a hot hybrid system too quickly can cause damage to
the hybrid system.
■ To prevent damage to the cooling system
Observe the following precautions:
● Avoid contaminating the coolant with foreign matter (such as sand or dust
etc.).
● Do not use any coolant additive.

6628-1. Specifications
PRIUS_OM_OM47F32E_(EE)
*: The fluid capacity is the quantity of reference.
If replacement is necessary, contact any authorized Toyota retailer or
Toyota authorized repairer, or any reliable repairer.
Cooling system
Capacity*
Gasoline
engine
Without exhaust heat recirculator system
5.6 L (5.9 qt., 4.9 Imp.qt.)
With exhaust heat recirculator system
6.2 L (6.6 qt., 5.5 Imp.qt.)
Power
control unit1.4 L (1.5 qt., 1.2 Imp.qt.)
Coolant type
Use either of the following:
• “Toyota Super Long Life Coolant”
• Similar high-quality ethylene glycol-based
non-silicate, non-amine, non-nitrite, and
non-borate coolant with long-life hybrid
organic acid technology
Do not use plain water alone.
Ignition system (spark plug)
MakeDENSO FC16HR-CY9
Gap0.9 mm (0.035 in.)
NOTICE
■ Iridium-tipped spark plugs
Use only iridium-tipped spark plugs. Do not adjust the spark plug gap.

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

693Alphabetical index
PRIUS_OM_OM47F32E_(EE)
Identification ............................ 655
Engine ................................... 656
Vehicle .................................. 655
Ignition 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
Illuminated entry system......... 472
Immobilizer system ................... 91
Indicators.................................. 110
Initialization .............................. 679
Items to initialize ................... 679
Moon roof .............................. 217
Parking Support Brake
function ............................... 402
Power windows ..................... 211
S-IPA (Simple Intelligent
Parking Assist System)....... 430
Tire pressure warning
system ................................ 531
Inside rear view mirror ............ 205
Instrument cluster light
control .................................... 102
Interior lights ............................ 470
Switch ........................... 471, 472
Wattage................................. 667
Intrusion sensor......................... 96
ISOFIX lower anchorages ......... 70Jack
Positioning a floor jack .......... 513
Vehicle-equipped jack... 600, 619
Jack handle ...................... 600, 619
Jam protection function
Moon roof.............................. 216
Power windows ..................... 211
Keyless entry ........................... 177
Smart entry & start system ... 187
Wireless remote control ........ 177
Keys .......................................... 172
Battery-saving function ......... 189
Electronic key ....................... 172
Engine switch (power
switch) ................................ 244
If the electronic key does not
operate properly ................. 636
If you lose your keys ..... 173, 176
Key number plate.................. 172
Keyless entry ........................ 177
Mechanical key ..................... 173
Power switch......................... 244
Replacing the battery ............ 554
Smart entry & start system ... 187
Warning buzzer..................... 188
Wireless remote control ........ 177
Knee airbag ................................ 39
IJ
K
*: Refer to “Navigation and multimedia system Owner’s manual”.

699Alphabetical index
PRIUS_OM_OM47F32E_(EE)
Emergency flashers switch ... 568
Engine switch (power
switch) ................................ 244
EV drive mode switch ........... 250
Fog light switch ..................... 270
Fuel filler door opener
switch.................................. 279
“HUD” (Head-up display)
switch.................................. 161
Ignition switch (power
switch) ................................ 244
Instrument cluster light
control switch ...................... 102
LTA (Lane Tracing Assist)
switch.................................. 315
Light switch ........................... 261
Meter control switches .......... 101
Moon roof switches ............... 215
Outside rear view mirror
switches.............................. 207
P position switch ................... 254
Power door lock switches ..... 179
Power switch ......................... 244
Power window switch ............ 210
Rear window wiper and
washer switch ..................... 275
Rear window and outside
rear view mirror defoggers
switch.................................. 463
S-IPA switch.......................... 408
Seat heater switches............. 469
“SOS” button ........................... 74
Speed limiter ......................... 353
Talk switch
*
Telephone switches*
TRIP switch ........................... 121Vehicle-to-vehicle distance
switch ................................. 337
VSC OFF switch ................... 443
Window lock switch............... 210
Windshield wipers and
washer switch ..................... 271
Wireless charger power
supply switch ...................... 487
Tail lights .................................. 261
Light switch ........................... 261
Replacing light bulbs............. 565
Talk switch
*
Telephone switch*
Theft deterrent system
Alarm ...................................... 93
Double locking system ............ 92
Immobilizer system ................. 91
Intrusion sensor ...................... 96
Tire inflation pressure ............. 537
Maintenance data ................. 665
Warning light ......................... 584
Tire pressure warning
system .................................... 530
Function ................................ 530
Initializing .............................. 530
Installing tire pressure
warning valves and
transmitters......................... 530
Registering ID codes ............ 531
Warning light ......................... 584
T
*: Refer to “Navigation and multimedia system Owner’s manual”.