ABS TOYOTA PRIUS PRIME 2023 User Guide

4265-5. Using the driving support systems
●The accelerator pedal is not
depressed
●The parking brake is not engaged
●The power switch is in ON
■Automatic system cancelation
of hill-start assist control
The hill-start assist control will turn
off in any of the following situations:
●Shift the shift position to P or N.
●The accelerator pedal is
depressed
●The brake pedal is depressed and
the parking brake is engaged
●A maximum of 2 seconds have
elapsed after the brake pedal is
released
●The power switch is turned to OFF
■Sounds and vibrations caused
by the ABS, brake assist, VSC,
TRAC and hill-start assist con-
trol systems
●A sound may be heard from the
engine compartment when the
brake pedal is depressed repeat-
edly, when the hybrid system is
started or just after the vehicle
begins to move. This sound does
not indicate that a malfunction has
occurred in any of these systems.
●Any of the following conditions
may occur when the above sys-
tems are operating. None of these
indicates that a malfunction has
occurred.
• Vibrations may be felt through the vehicle body and steering.
• A motor sound may be heard also
after the vehicle comes to a stop.
■ECB operating sound
ECB operating sound may be heard
in the following cases, but it does
not indicate that a malfunction has
occurred.
●Operating sound heard from the
engine compartment when the
brake pedal is operated.
●Operating sound heard from the engine compartment when one or
two minutes passed after the stop
of the hybrid system.
■Active Cornering Assist opera-
tion sounds and vibrations
When the Active Cornering Assist is
operated, operation sounds and
vibrations may be generated from
the brake system, but this is not a
malfunction.
■Automatic reactivation of TRAC
and VSC systems
After turning the TRAC and VSC
systems off, the systems will be
automatically re-enabled in the fol-
lowing situations:
●When the power switch is turned
off
●If only the TRAC system is turned
off, the TRAC will turn on when
vehicle speed increases
If both the TRAC and VSC sys-
tems are turned off, automatic re-
enabling will not occur when vehi-
cle speed increases.
■Operating conditions of Active
Cornering Assist
The system operates when the fol-
lowing occurs.
●TRAC/VSC can operate
●The driver is attempting to accel-
erate while turning
●The system detects that the vehi-
cle is drifting to the outer side
●The brake pedal is released
■Reduced effectiveness of the
EPS system
The effectivenes s of the EPS sys-
tem is reduced to prevent the sys-
tem from overheating when there is
frequent steering input over an
extended period of time. The steer-
ing wheel may feel heavy as a
result. Should this occur, refrain
from excessive steering input or
stop the vehicle and turn the hybrid
system off. The EPS system should
return to normal within 10 minutes.

4275-5. Using the driving support systems
5
Driving
■Secondary Collision Brake
operating conditions
The system operates when the SRS
airbag sensor detects a collision
while the vehicle is in motion.
However, the system does not oper-
ate when the components are dam-
aged.
■Secondary Collision Brake
automatic cancellation
The system is automatically can-
celed in any of the following situa-
tions.
●The vehicle speed drops to
approximately 0 mph (0 km/h).
●A certain amount of time elapses
during operation
●The accelerator pedal is
depressed a large amount
WARNING
■The ABS does not operate
effectively when
●The limits of tire gripping perfor-
mance have been exceeded
(such as excessively worn tires
on a snow-covered road).
●The vehicle hydroplanes while
driving at high speed on wet or
slick roads.
■Stopping distance when the
ABS is operating may exceed
that of normal conditions
The ABS is not designed to
shorten the vehicle’s stopping dis-
tance. Always maintain a safe dis-
tance from the vehicle in front of
you, especially in the following sit-
uations:
●When driving on dirt, gravel or
snow-covered roads
●When driving with tire chains
●When driving over bumps in the
road
●When driving over roads with
potholes or uneven surfaces
■TRAC/VSC may not operate
effectively when
Directional control and power may
not be achievable while driving on
slippery road surfaces, even if the
TRAC/VSC system is operating.
Drive the vehicle carefully in con-
ditions where stability and power
may be lost.
■Active Cornering Assist does
not operate effectively when
●Do not overly rely on Active
Cornering Assist. Active Corner-
ing Assist may not operate
effectively when accelerating
down slopes or driving on slip-
pery road surfaces.
●When Active Cornering Assist
frequently operates, Active Cor-
nering Assist may temporarily
stop operating to ensure proper
operation of the brakes, TRAC
and VSC.
■Hill-start assist control does
not operate effectively when
●Do not overly rely on hill-start
assist control. Hill-start assist
control may not operate effec-
tively on steep inclines and
roads covered with ice.
●Unlike the parking brake, hill-
start assist control is not
intended to hold the vehicle sta-
tionary for an extended period
of time. Do not attempt to use
hill-start assist control to hold
the vehicle on an incline, as
doing so may lead to an acci-
dent.

4285-5. Using the driving support systems
WARNING
■When the TRAC/ABS/VSC is
activated
The slip indicator light flashes.
Always drive care fully. Reckless
driving may cause an accident.
Exercise particular care when the
indicator light flashes.
■When the TRAC/VSC systems
are turned off
Be especially careful and drive at
a speed appropriate to the road
conditions. As these are the sys-
tems to help ensure vehicle stabil-
ity and driving force, do not turn
the TRAC/VSC systems off
unless necessary.
■Replacing tires
Make sure that all tires are of the
specified size, brand, tread pat-
tern and total load capacity. In
addition, make sure that the tires
are inflated to the recommended
tire inflation pressure level.
The ABS, TRAC and VSC sys-
tems will not function correctly if
different tires are installed on the
vehicle.
Contact your Toyota dealer for
further information when replacing
tires or wheels.
■Handling of tires and the sus-
pension
Using tires with any kind of prob-
lem or modifying the suspension
will affect the driv ing assist sys-
tems, and may cause a system to
malfunction.
■Secondary Collision Brake
Do not rely solely upon the Sec-
ondary Collision Brake. This sys-
tem is designed to help reduce
the possibility of further damage
due to a secondary collision, how-
ever, that effect changes accord-
ing to various conditions. Overly
relying on the system may result
in death or serious injury.

4706-4. Using the other interior features
WARNING
●If the plug of a device fits
loosely in a power outlet, even
though it is fully inserted,
replace the power outlet. For
information on replacement,
contact your Toyota dealer.
■Devices to be connected
●Make sure to read any instruc-
tion manual which came with a
device and observe any warn-
ings on the device.
●Do not connect a device to a
power outlet if the device is mal-
functioning or its plug is dam-
aged.
●Otherwise, the device may be
further malfunctioning, espe-
cially when the outside tem-
perature is high or low.
●Devices requiring to be installed
on a level place may not oper-
ate properly.
●Do not use devices, other than
waterproof devices, in a place
where water, such as rain, is
splashed over or where it is
humid.
●Do not use a device that has
been or likely to have been
merged in water or absorbed
water within.
●Do not connect a medical
device, as depending on the
vehicle condition, the power
supply function may be tempo-
rarily stopped.
■When the power outlets are
used while the vehicle is
parked or stopped
●The power outlets are designed
to be connected to electric
devices, such as lighting
devices. Do not use them as a
generator that supplies power to
a house, etc. Also, when they
are to be used on an emer-
gency power supply device for
homes, such as an exclusive
device having connection to an
external power source, or a
device whose power supply cir-
cuit for external power source is
separate from electric wiring of
power companies, consult with
the manufacturer or a retailer of
the device.
●When using a power outlet,
make sure to securely engage
the parking brake and shift the
shift position to P. Otherwise,
the vehicle may move, possibly
leading to an accident.
●When using a power outlet, do
not move away from the vehicle.
●Do not perform power supply
during weather when lightning
may occur. Stop supplying
power if lightning is observed
during power supply.
●Do not use the power outlets if
the vehicle has a vehicle cover
installed.
●Do not use a power outlet when
the vehicle is parked on a
slanted place or a slope. When
a power outlet is being used, do
not move the vehicle or cause it
to be inclined.
●Observe the following precau-
tions when a connected cord is
to be brought outside the vehi-
cle:

5107-3. Do-it-yourself maintenance
item.
■Brake fluid can absorb moisture
from the air
Excess moisture in the brake fluid
can cause a dangerous loss of brak-
ing efficiency. Use only newly
opened brake fluid.
If any washer does not work or
“Windshield Washer Fluid Low”
is shown on the multi-informa-
tion display, the washer tank
may be empty. Add washer fluid.
Fluid
type
FMVSS No.116 DOT 3 or
SAE J1703 brake fluid
FMVSS No.116 DOT 4 or
SAE J1704
ItemClean funnel
WARNING
■When filling the reservoir
Take care as brake fluid can harm
your hands and eyes and damage
painted surfaces.
If fluid gets on your hands or in
your eyes, flush the affected area
with clean water immediately.
If you still experience discomfort,
see a doctor.
NOTICE
■If the fluid level is low or high
It is normal for the brake fluid level
to go down slightly as the brake
pads wear out or when the fluid
level in the accumulator is high.
If the reservoir needs frequent
refilling, there may be a serious
problem.
Adding the washer fluid
WARNING
■When adding washer fluid
Do not add washer fluid when the
hybrid system is hot or operating
as washer fluid contains alcohol
and may catch fire if spilled on the
hybrid system, etc.
NOTICE
■Do not use any fluid other
than washer fluid
Do not use soapy water or engine
antifreeze instead of washer fluid.
Doing so may cause streaking on
the vehicle’s painted surfaces, as
well as damaging the pump lead-
ing to problems of the washer
fluid not spraying.
■Diluting washer fluid
Dilute washer fluid with water as
necessary.
Refer to the freezing tempera-
tures listed on the label of the
washer fluid bottle.

5578-2. Steps to take in an emergency
8
When trouble arises
■SRS warning light (warning buzzer)
This warning light indicates problems with the following:
 Airbag sensor assembly
 Front impact sensors
 Side impact sensors (front door)
 Side impact sensors (front)
 Front passenger occupant classification sensors
 Front passenger’s seat belt buckle switch
 SRS warning light
 “PASSENGER BAG ON” indicator light
 “PASSENGER BAG OFF” indicator light
 SRS airbags
 SRS system related wiring harnesses and power sources
■ABS warning light (warning buzzer)
Warning lightDetails/Actions
Indicates a malfunction in:
The SRS airbag system; or
 The seat belt pretensioner system
 Have the vehicle inspected by your Toyota
dealer immediately.
Warning lightDetails/Actions
(U.S.A.)
(Canada)
Indicates a malfunction in:
 The ABS; or
 The brake assist system
 Have the vehicle inspected by your Toyota
dealer immediately.

650Alphabetical Index
Alphabetical Index
A
A/C ........................................... 434“My Room Mode” ................. 134
Air conditioning eco mode .... 437
Air conditioning filter ............. 535
Automatic air conditioning sys-tem ..................................... 434
Humidity sensor ................... 439
ABS (Anti-lock Brake System) ............................................... 424Function ............................... 424
Warning light ........................ 557
ACA (Active Cornering Assist) ............................................... 424
AC charging cable .................... 97 CCID (Charging Ci rcuit Interrupt-
ing Device) indicator............. 99
CCID (Charging Ci rcuit Interrupt-
ing Device) ........................... 98
Charging cable indicator ...... 118
If the charging connector cannot be unlocked ........................ 104
Locking and unlocking.......... 102
Maintenance......................... 101
Safety functions...................... 99
Acoustic Vehicle Alerting Sys- tem ........................................... 81
Active Cornering Assist (ACA) ............................................... 424
AHB (Automatic High Beam) . 272
Airbags ...................................... 35 Airbag operating conditions.... 37
Airbag precautions for your child............................................. 40
Airbag warning light.............. 557
Correct driving posture ........... 29
Curtain shield airbag operating conditions ............................. 38
Curtain shield airbag precautions ............................................. 40
Front passenger occupant clas- sification system ...................44
General airbag precautions ....40
Location of the SRS airbags...35
Locations of airbags ...............35
Modification and disposal of air- bags......................................42
Seat cushion airbag................35
Side airbag operating conditions .............................................38
Side airbag precautions..........40
Side and curtain shield airbags operating conditions .............38
Side and curtain shield airbags precautions ...........................40
SRS airbags ...........................35
SRS warning light .................557
Air conditioning filter .............535
Air conditioning system.........434 “My Room Mode” ..................134
Air conditioning eco mode ....437
Air conditioning filter .............535
Automatic air conditioning sys-tem .....................................434
Humidity sensor....................439
Alarm Warning buzzer .. ..................555
Anchor brackets .................53, 62
Antenna Smart key system .................203
Anti-lock brake system (ABS)424 Function................................424
Warning light ........................557
Armrest ......... ......................... ..465
Assist grips .............................466
AUTO EV/HV mode ...................73
AUTO EV/HV mode switch .......74
Automatic air conditioning sys- tem .........................................434“My Room Mode” ..................134
Air conditioning eco mode ....437
Air conditioning filter .............535
Humidity sensor....................439

Alphabetical Index663
Vehicle identification number600
Vehicle Stability Control (VSC)............................................... 424
Ventilators (seat ventilators) . 444
VSC (Vehicle Stability Control) ............................................... 424
W
Warning buzzers Brake hold ............................ 561
Brake Override System ........ 560
Brake system ....................... 555
Drive-Start Control ............... 560
Electric power steering ......... 558
High coolant temperature ..... 556
Intuitive parking assist OFF indi-
cator ................................... 560
Intuitive parking assist .......... 368
Low engine oil pressure ....... 556
LTA (Lane Tracing Assist).. 305, 558
Open door ............................ 189
Open hood ........................... 189
PKSB.................................... 560
Pre-collision warning ............ 293
Seat belt reminder ................ 562
Warning lights ABS ...................................... 557
Brake hold operated indicator........................................... 561
Brake system ....................... 555
Charging system .................. 555
Cruise control indicator ........ 559
Driving assist information indica- tor ....................................... 559
Dynamic radar cruise control indicator.............................. 559
Electric power steering ......... 558
High coolant temperature ..... 556
Hybrid system overheat ....... 556
Inappropriate pedal operation ........................................... 560 Intuitive parking assist OFF indi-
cator ...................................560
LDA indicator ........................558
Low engine oil pressure .......556
Low fuel level........................562
LTA indicator ........................558
Malfunction indica tor lamp ....556
Parking brake indicator.........561
PCS ......................................558
PDA indicator .......................559
Seat belt reminder light ........562
Slip indicator .........................560
SRS ......................................557
Tire pressure ........................561
Warning messages .................566
Warning reflector storage space ...............................................455
Washer.....................................275 Camera washer ....................275
Checking ..............................510
Low washer fluid warning mes-sage............................510, 566
Preparing and checking before winter ..................................429
Switch ...................................275
Washing and waxing ..............486
Weight Cargo capacity .............246, 249
Load limits ............................249
Weight ..................................600
Wheels .....................................534 Replacing wheels .................534
Size ......................................605
Window glasses......................227
Window lock switch ...............229
Windows Power windows ....................227
Rear window defogger .........436
Washer .................................275
Windshield defogg er ..............435
Windshield de-icer..................439
Windshield wipers