2023 TOYOTA PRIUS PRIME power steering

5638-2. Steps to take in an emergency
8
When trouble arises
passenger that his or her seat belt is not fastened. If the seat belt is
unfastened, the buzzer sounds intermitte ntly for a certain period of time,
after the seat belt is fastened and unfastened and the vehicle reaches a
certain speed.
■Warning buzzer
In some cases, the buzzer may not
be heard because of noisy place or
an audio sound.
■Front passenger detection sen-
sor, seat belt reminder and
warning buzzer
●If luggage is placed on the front
passenger seat, the front passen-
ger detection sensor may cause
the warning light to flash and the
warning buzzer to sound even if a
passenger is not sitting in the
seat.
●If a cushion is placed on the seat,
the sensor may not detect a pas-
senger, and the warning light may
not operate properly.
■If the malfunction indicator
lamp comes on while driving
First check the following:
●Is the fuel tank empty?
If it is, fill the fu el tank immediately.
●Is the fuel tank cap loose?
If it is, tighten it securely.
The light will go off after several
driving trips.
If the light does not go off even after
several trips, contact your Toyota
dealer as soon as possible.
■Electric power steering system
warning light (warning buzzer)
When the 12-volt battery charge
becomes insufficient or the voltage
temporarily drops, the electric power
steering system warning light may
come on and the warning buzzer
may sound.
At this time, the functions of the air
conditioning, etc. may be partially
limited in order to reduce the power consumption of the 12-volt battery.
■When the tire pressure warning
light comes on
Inspect the tires to check if a tire is
punctured.
If a tire is punctured: P.574
If none of the tires are punctured:
Turn the power switch off then turn it
to ON.
Check if the tire pressure warning
light comes on or blinks.
If the tire pressure warning light
blinks for approximately 1 minute
then stays on
There may be a malfunction in the
tire pressure wa rning system. Have
the vehicle inspected by your
Toyota dealer immediately.
If the tire pressure warning light
comes on
After the temperature of the tires
has lowered sufficiently, check the
inflation pressure of each tire and
adjust them to th e specified level.
If the warning light does not turn off
even after several minutes have
elapsed, check that the inflation
pressure of each tire is at the speci-
fied level and perform the tire infla-
tion pressure setting procedure.
(  P.524)
If the warning light does not turn off
even after several minutes have
elapsed since performing the tire
inflation pressure setting proce-
dure, have the vehicle inspected by
your Toyota dealer as soon as pos-
sible.

5648-2. Steps to take in an emergency
■The tire pressure warning light
may come on due to natural
causes
The tire pressure warning light may
come on due to natural causes such
as natural air leaks and tire inflation
pressure changes caused by tem-
perature. In this case, adjusting the
tire inflation pressure will turn off the
warning light (after a few minutes).
■Conditions that the tire pres-
sure warning system may not
function properly
 P.517
WARNING
■If a warning light comes on or
a warning buzzer sounds
when a warning message is
shown on the multi-informa-
tion display
*
Check and follow the message
shown on the multi-information
display.
Failure to do so may result in
death or serious injury.
*: Warning lights illuminate in red
or yellow and the warning
buzzer beeps once or sounds
continuously.
■When the electric power
steering system warning light
comes on
When the light comes on yellow,
the assist to the power steering is
restricted. When the light comes
on red, the assist to the power
steering is lost and handling oper-
ations of the steering wheel
become extremely heavy.
If the steering wheel becomes
heavier than usual when operat-
ing, hold firmly and operate using
more force than usual.
■If the tire pressure warning
light comes on
Be sure to observe the following
precautions. Failure to do so
could cause a loss of vehicle con-
trol and result in death or serious
injury.
●Stop your vehicle in a safe
place as soon as possible.
Adjust the tire inflation pressure
immediately.
●If the tire pressure warning light
comes on even after tire infla-
tion pressure adjustment, it is
probable that you have a flat
tire. Check the tires. If a tire is
flat, repair the flat tire by using
emergency tire puncture repair
kit.
●Avoid abrupt maneuvering and
braking. If the vehicle tires dete-
riorate, you could lose control of
the steering wheel or the
brakes.
■If a blowout or sudden air
leakage should occur
The tire pressure warning system
may not activate immediately.
■Maintenance of the tires
Each tire, includ ing the spare (if
provided), should be checked
monthly when cold and inflated to
the inflation pressure recom-
mended by the vehicle manufac-
turer on the vehicle placard or tire
inflation pressure label (tire and
load information label). (If your
vehicle has tires of a different size
than the size indicated on the
vehicle placard or tire inflation
pressure label [tire and load infor-
mation label], you should deter-
mine the proper tire inflation
pressure for those tires.)

5838-2. Steps to take in an emergency
8
When trouble arises
WARNING
●The repair kit may overheat if
operated for a long period of
time. Do not operate the repair
kit continuously for more than
40 minutes.
●Parts of the repair kit become
hot during operation. Be careful
handling the repair kit during
and after operation. Do not
touch the metal part connecting
the bottle and the compressor. It
will be extremely hot.
●Do not attach the vehicle speed
warning sticker to an area other
than the one indicated. If the
sticker is attached to an area
where an SRS airbag is located,
such as the pad of the steering
wheel, it may prevent the SRS
airbag from operating properly.
■Driving to spread the liquid
sealant evenly
Observe the following precautions
to reduce the risk of accidents.
Failing to do so may result in a
loss of vehicle control and cause
death or serious injury.
●Drive the vehicle carefully at a
low speed. Be especially careful
when turning and cornering.
●If the vehicle does not drive
straight or you feel a pull
through the steering wheel, stop
the vehicle and check the fol-
lowing.
• Tire condition. The tire may have separated from the wheel.
• Tire inflation pressure. If the tire inflation pressure is 19 psi (130
kPa, 1.3 kgf/cm
2 or bar) or less,
the tire may be severely dam-
aged.
NOTICE
■When performing an emer-
gency repair
●A tire should only be repaired
with the emergency tire punc-
ture repair kit if the damage is
caused by a sharp object such
as nail or screw passing through
the tire tread.
Do not remove the sharp object
from the tire. Removing the
object may widen the opening
and disenable emergency repair
with the repair kit.
●The repair kit is not waterproof.
Make sure that the repair kit is
not exposed to water, such as
when it is being used in the rain.
●Do not put the repair kit directly
onto dusty ground such as sand
at the side of the road. If the
repair kit vacuums up dust etc.,
a malfunction may occur.
●Make sure to stand the kit with
the bottle vertical. The kit can-
not work properly if it is laid on
its side.
■Precautions for the emer-
gency tire puncture repair kit
●The repair kit power source
should be 12 V DC suitable for
vehicle use. Do not connect the
repair kit to any other source.
●If fuel splatters on the repair kit,
the repair kit may deteriorate.
Take care not to allow fuel to
contact it.
●Place the repair kit in a storage
to prevent it from being exposed
to dirt or water.
●Store the repair kit in the lug-
gage compartment out of reach
of children.

6139-1. Specifications
9
Vehicle specifications
Glossary of tire terminology
Tire related termMeaning
Cold tire inflation pres-
sureTire pressure when the vehicle has been parked
for three hours or more, or has not been driven
more than 1 mile or 1.5 km under that condition
Maximum inflation pres-
sureThe maximum cold inflated pressure to which a
tire may be inflated, shown on the sidewall of
the tire
Recommended inflation
pressureCold tire inflation pressure recommended by a
manufacturer
Accessory weight
The combined weight (in excess of those stan-
dard items which may be replaced) of hybrid
transmission, power steering, power brakes,
power windows, power seat s, radio and heater,
to the extent that these items are available as
factory-installed equipment (whether installed or
not)
Curb weight
The weight of a motor vehicle with standard
equipment, including the maximum capacity of
fuel, oil and coolant, and if so equipped, air con-
ditioning and additional weight optional engine
Maximum loaded vehicle
weight
The sum of:
(a) Curb weight
(b) Accessory weight
(c) Vehicle capacity weight
(d) Production options weight
Normal occupant weight
150 lb. (68 kg) times the number of occupants
specified in the second column of Table 1
* that
follows
Occupant distributionDistribution of occupants in a vehicle as speci-
fied in the third column of Table 1
* below
Production options weight
The combined weight of installed regular pro-
duction options weighing over 5 lb. (2.3 kg) in
excess of the standard items which they
replace, not previously considered in curb
weight or accessory weight, including heavy
duty brakes, ride levelers, roof rack, heavy duty
battery, and special trim

6329-2. Customization
*: If equipped
■Driving mode select switch (P.422)
■Automatic air conditioning system ( P.434)
*: This setting changes in accordance with My Settings.
■Illumination ( P.446)
Rear accessory settingOff
3.9 in. (10 cm)
O7.9 in. (20 cm)
11.8 in. (30 cm)
15.7 in. (40 cm)
Clear registered parking
space--O
FunctionDefault settingCustomized
setting
Powertrain control in cus-
tom modeNormalSportOEco
Steering wheel control in
custom modeNormalSportO
Air conditioning operation
in custom modeNormalEcoO
FunctionDefault settingCustomized setting
A/C auto switch operation*OnOffOO
FunctionDefault settingCustomized setting
Time elapsed before the
interior lights turn off
*115 seconds
Off
OO7.5 seconds
30 seconds
Operation after the power
switch is turned offOnOffO
FunctionDefault settingCustomized settingABC
ABC
ABC
ABC

652Alphabetical Index
sification system ................... 44
Points to remember ................ 51
Riding with children ................ 50
Types of child restraint system installation method ............... 53
Using an anchor bracket ........ 62
Child safety ............................... 50 12-volt battery precautions . 511, 592
Airbag precautions ................. 40
Back door precautions ......... 191
Charging precautions ........... 115
Child restraint system............. 53
Heated steering wheel precau- tions.................................... 443
How your child should wear the seat belt................................ 32
Power window lock switch.... 229
Power window precautions .. 228
Rear door child-protector lock ........................................... 189
Removed key battery precau- tions.................................... 539
Seat belt extender precautions ............................................. 32
Seat belt precautions ............. 31
Seat heater precautions ....... 443
Window lock switch .............. 229
Cleaning .......................... 486, 490 Aluminum wheels ................. 486
Exterior ................................. 486
Interior .................................. 490
Radar sensor........................ 355
Seat belts ............................. 490
Condenser .............................. 508
Console box ............................ 451
Coolant Checking .............................. 507
Preparing and checking before winter.................................. 429
Warning light ........................ 556
Cooling system ...................... 507 Hybrid system overheating ...594
Coussins gonflables Emplacement des coussins gonflables SRS...................639
Modification et mise au rebut des coussins gonflables ............645
Précautions générales relatives aux coussins gonflables .....641
Précautions relatives aux couss- ins gonflables en rideau .....641
Précautions relatives aux couss- ins gonflables latéraux et en
rideau .................................641
Précautions relatives aux couss- ins gonflables latéraux........641
Précautions relatives aux couss- ins gonflables pour vos enfants...........................................641
Cruise control Cruise control .......................342
Dynamic radar cruise control 331
Cup holders.............................451
Current fuel economy ............163
Curtain shield airbags ..............35
Customizable features ...........618
Custom mode..........................422
D
Daytime running light system270 Replacing exterior lights .......543
Deck board ..............................454
Deck under tray ......................455
Defogger Outside rear view mirrors .....436
Rear window.........................436
Windshield ............................435
Digital Rear-view Mirror .........217
Dimensions .............................600
Dinghy towing .........................250
Display Cruise control .......................342
Driving information ...............163

Alphabetical Index653
Energy monitor ..................... 173
Intuitive parking assist .......... 363
Multi-information display ...... 161
Parking Support Brake function (rear pedestrians) ............... 394
RCD (Rear Camera Detection) ........................................... 379
RCTA ................................... 373
Warning messages .............. 566
Do-it-yourself maintenance . 495, 499
Door lock Back door ............................. 191
Side doors ............................ 185
Smart key system................. 203
Wireless remote control ....... 182
Doors Automatic door locking and unlocking system................ 190
Back door ............................. 191
Door glasses ........................ 227
Door lock .............................. 185
Open door warning buzzer ... 189
Outside rear view mirrors ..... 225
Rear door child-protector lock ........................................... 189
Side doors ............................ 185
Driver’s seat belt reminder light ............................................... 562
Driver’s seat position memory ............................................... 231Driving position memory....... 231
Memory recall function ......... 232
Driver monitor ........................ 292
Drive-Start Control (DSC) ...... 245 Sudden start restraint control245
Driving ..................................... 239 Break-in tips ......................... 240
Correct posture ...................... 29
Driving in the rain ................. 240
Driving mode select switch... 422
Plug-in Hybrid Electric Vehicle driving tips ............................88
Procedures ...........................239
Winter drive tips....................429
Driving information display ...163
Driving mode select switch ...422
Driving position memory .......230 Memory recall function .........232
Power easy access system ..230
Seat position memory...........231
Driving support system informa- tion display............................165
DSC (Drive-Start Control) ......245 Sudden start restraint control245
Dynamic radar cruise control Function................................331
Warning message . ...............566
E
Eco drive mode .......................422
EDR (Event data recorder) .......10
Elapsed time ...........................165
Electric motor (traction motor)72
Location ..................................72
Specification .........................602
Electric Power Steering (EPS)
Function................................424
Warning light ........................558
Electronic key Battery-saving function .........204
If the electronic key does not operate properly .................587
Replacing the battery ...........538
Emergency, in case of If a warning buzzer sounds ..555
If a warning light turns on .....555
If a warning message is dis-played .................................566
If the 12-volt battery is dis- charged ..............................589
If the electronic key does not operate properly .................587
If the hybrid system will not start

654Alphabetical Index
........................................... 584
If the vehicle is submerged or water on the road is rising .. 548
If you have a flat tire ............. 574
If you lose your keys ............ 586
If you think something is wrong ........................................... 554
If your vehicle becomes stuck ........................................... 597
If your vehicle has to be stopped in an emergency................. 547
If your vehicle needs to be towed ........................................... 550
If your vehicle overheats ...... 594
Emergency flashers ............... 546
Emergency tire puncture repair kit ........................................... 574
Energy monitor ....................... 173
Engine Compartment ....................... 504
Hood..................................... 501
Identification number ............ 601
Engine coolant Capacity ............................... 603
Checking .............................. 507
Preparing and checking before winter.................................. 429
Warning light ........................ 556
Engine coolant temperature gauge..................................... 155
Engine oil Capacity ............................... 602
Checking .............................. 504
Preparing and checking before winter.................................. 429
Warning light ........................ 556
Engine oil maintenance data160, 506
Enhanced Vehicle Stability Con- trol (Enhanced VSC) ............ 424
Enhanced VSC (Enhanced Vehi- cle Stability Control) ............ 424 EPS (Electric Power Steering)
Function................................424
Warning light ........................558
EV/HV mode selection switch .74
EV driving range .......................90
Event data recorder (EDR) .......10
EV indicator...............................78
EV mode ....................................73
F
Flat tire.....................................574 Tire pressure warning system...........................................516
Floor mats .................................28
Fluid Brake ............................509, 604
Hybrid transmission ..............604
Washer .................................510
Footwell lights ........................446
Front doors .............................185
Front passenger’s seat belt reminder light........................562
Front passenger occupant clas- sification system ....................44
Front seat heaters ..................443
Front seats ..............................209 Adjustment ...........................209
Cleaning ...............................490
Correct driving posture ...........29
Driving position memory .......230
Head restraints .....................212
Memory recall function .........232
Power easy access system ..230
Seat heaters .........................443
Seat position memory...........231
Seat ventilators.....................444
Front side marker lights.........269 Replacing exterior lights .......543
Switch ...................................269
Front turn signal lights ..........262 Replacing exterior lights .......543
Turn signal lever ...................262