sensor TOYOTA PRIUS PRIME 2023 Manual PDF

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.

4396-1. Using the air conditioning system and defogger
6
Interior features
1Press the “AUTO” switch.
2 Adjust the temperature set-
ting.
3 To stop the operation, press
the “OFF” switch.
If the fan speed setting or air
flow modes are operated, the
automatic mode indicator goes
off. However, automatic mode
for functions other than that
operated is maintained.
■Using automatic mode
Fan speed is adjusted automati-
cally according to the temperature
setting and the ambient conditions.
Therefore, the fan may stop for a
while until warm or cool air is ready
to flow immediately after the auto-
matic mode switch is pressed.
Cool air may blow around the upper
body even when the heater is on
due to sunlight.
■Windshield fog detection func-
tion
When automatic mode is set, the
humidity sensor detects fog on the
windshield and controls the air con-
ditioning system to prevent fog.
WARNING
■Cautions for using “My Room
Mode”
Do not leave children, people who
need assistance, or pets inside
the vehicle. The system may turn
off automatically and the interior
temperature may become high or
low, resulting in heat stroke, dehy-
dration or hypothermia. Failure to
do so may result in death or seri-
ous injury.
■To prevent the windshield
from fogging up
Do not use the windshield defog-
ger switch during cool air opera-
tion in extremely humid weather.
The difference between the tem-
perature of the outside air and
that of the windshield can cause
the outer surface of the wind-
shield to fog up, blocking your
vision.
■When the outside rear view
mirror defoggers are operat-
ing (if equipped)
Do not touch the rear view mirror
surfaces when the outside rear
view mirror defoggers are on.
NOTICE
■To prevent 12-volt battery dis-
charge
Do not leave the air conditioning
system on longer than necessary
when the hybrid system is off.
■When repairing/replacing
parts of the air conditioning
system
Have repair/replacement per-
formed by your Toyota dealer.
When a part of the air condition-
ing system, such as the evapora-
tor, is to be replaced, it must be
replaced with a new one.
Using automatic mode
NOTICE
■Humidity sensor
In order to detect fog on the wind-
shield, a sensor which monitors
the temperature of the windshield,
the surround humidity, etc. is
installed.
Follow these points to avoid dam-
aging the sensor:
●Do not disassemble the sensor

4406-1. Using the air conditioning system and defogger
This feature is used to prevent
ice from building up on the wind-
shield and wiper blades.
Press the switch to turn the sys-
tem on/off.
The indicator comes on when the
system is on.
The windshield de-icer will auto-
matically turn off after approxi-
mately 15 minutes.
For detail regarding the Multi-
media Display, refer to “MULTI-
MEDIA OWNER’S MANUAL”.
■Display procedure
1 Touch on the main menu
on the Multimedia Display.
2 Touch “Climate” on the sub
menu.
3 Select any screen.
Displays the air conditioning
control screen.
Displays the option control
screen.
NOTICE
●Do not spray the glass cleaner
on the sensor or subject it to
strong impacts
●Do not stick anything on the
sensor
Windshield de-icer (if
equipped)
WARNING
■To prevent burns
Do not touch the glass at lower
part of the windshield or to the
side of the front pillars when the
windshield deicer is on.
Air conditioning control
screen
A
B

4486-2. Using the interior lights
■Turning the rear personal
lights on/off
Press the switch.
Each time the switch is pressed,
the rear personal light turns on/off.
If the light is turned on by the inte-
rior lights, the rear personal light
cannot turn off by pressing the
switch.
■When front personal light
switch does not respond as
normal
●When water, dirt, etc., have
adhered to the switch surface
●When operated with a wet hand
●When wearing gloves, etc.
Under the following conditions,
the instrument panel ornament
lights blink 2 times to notify the driver.
■Preceding vehicle start
notification
Notifies when the preceding
vehicle starts off or accelerates
while stopped behind the pre-
ceding vehicle.
This function may also operate
while driving at extremely slow
speeds immediately before stop-
ping the vehicle.
■PDA (Proactive Driving
Assist) linked notifications
Notifies when PDA (Proactive
Driving Assist) has detected an
operation target. ( P.320)
■Operation description of illumi-
nation notification
●PDA (Proactive Driving Assist)
linked notifications do not operate
when PDA (Proactive Driving
Assist) is disabled through a cus-
tomize setting. (P.320)
●When the preceding vehicle is
close in distance from the vehicle
while stopped, the timing for noti-
fying that the preceding vehicle
has started off may be delayed.
●This function does not operate
when the front ca mera or front
radar sensor does not operate
properly such as during bad
weather.
●When the proceeding vehicle
starts off within approximately 3
seconds after the vehicle is
stopped, the illumi nation notifica-
tion does not operate. However,
the illumination notification oper-
ates and follow-up cruising
resumes if dynamic radar cruise
control is in use.
Illumination notification (if
equipped)

4887-1. Maintenance and care
WARNING
■While charging
Do not wash the vehicle.
Doing so may cause the electrical
components to malfunction or
catch fire and also you may get an
electric shock that may result in
death or serious injury.
■When cleaning the windshield
Set the wiper switch to off.
If the wiper switch is in “AUTO”,
the wipers may operate unexpect-
edly in the following situations,
and may result in hands being
caught or other serious injuries
and cause damage to the wiper
blades.
Off
AUTO
●When the upper part of the
windshield where the raindrop
sensor is located is touched by
hand
●When a wet rag or similar is
held close to the raindrop sen-
sor
●If something bumps against the
windshield
●If you directly touch the raindrop
sensor body or if something
bumps into the raindrop sensor
A
B
■Precautions regarding the
exhaust pipe
Exhaust gasses cause the
exhaust pipe to become quite hot.
When washing the vehicle, be
careful not to touch the pipe until it
has cooled sufficiently, as touch-
ing a hot exhaust pipe can cause
burns.
■Precaution regarding the
front and rear bumpers
If the paint of the front or rear
bumper is chipped or scratched,
the following systems may not
function correctly. If this occurs,
consult your Toyota dealer.
• BSM (if equipped)
• RCTA (if equipped)
• SEA (if equipped)
• PKSB (if equipped)
• Intuitive parking assist
• Toyota Safety Sense 3.0

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.

5608-2. Steps to take in an emergency
■Intuitive parking assist OFF indicator (warning buzzer)
■Slip indicator light
■Inappropriate pedal operation warning light* (warning buzzer)
*: This light illuminates on the multi-information display with a message.
Warning lightDetails/Actions
When a buzzer sounds:
Indicates a malfunction in the Intuitive parking
assist function
Have the vehicle inspected by your Toyota
dealer immediately.
When a buzzer does not sound:
Indicates that the system is temporarily unavail-
able, possibly due to a sensor being dirty or cov-
ered with ice, etc.
 Follow the instructions displayed on the
multi-information display. ( P.365, 566)
Warning lightDetails/Actions
Indicates a malfunction in:
The VSC system;
 The TRAC system; or
 The hill-start assist control system
 Have the vehicle inspected by your Toyota
dealer immediately.
Warning lightDetails/Actions
When a buzzer sounds:
Brake Override System is malfunctioning
 Drive-Start Control is malfunctioning
 Drive-Start Control is operating
 Follow the instructions displayed on the
multi-information display.
When a buzzer does not sound:
Brake Override System is operating.
 Release the accelerator pedal and
depress the brake pedal.

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.

5708-2. Steps to take in an emergency
●Intuitive Parking Assist
● PKSB (Parking Support
Brake) (if equipped)
● RCD (Rear Camera Detec-
tion) (if equipped)
Have the vehicle inspected by your
Toyota dealer immediately.
■If “System Stopped See
Owner’s Manual” is displayed
Indicates one of the following sys-
tems is disabled.
●PCS (Pre-Collision System)
●LDA (Lane Departure Alert)
●LTA (Lane Tracing Assist)
● LCA (Lane Change Assist) (if
equipped)
●AHB (Automatic High Beam)
●Dynamic radar cruise control
● RSA (Road Sign Assist) (if
equipped)
●PDA (Proactive Driving Assist)
● BSM (Blind Spot Monitor) (if
equipped)
● RCTA (Rear Cross Traffic
Alert) (if equipped)
●Safe Exit Assist (if equipped)
●Intuitive Parking Assist
● PKSB (Parking Support
Brake) (if equipped)
● RCD (Rear Camera Detec-
tion) (if equipped)
Follow the following correction
methods.
• Check the voltage of the 12-volt battery
• Check the sensors that the Toyota Safety Sense 3.0 uses for foreign
matter covering them. Remove them if any. (
P.285)
• Vehicles with RCD (Rear Camera Detection): Check if the back door
is open.
Indicates the sensors may not be
operating properly. ( P.289, 358,
362, 366, 376, 380)
• Check the rear bumper around the sensors used by the BSM (if
equipped), RCTA (if equipped) or
Safe Exit Assist (if equipped) for
foreign matter co vering them.
Remove them if any. ( P.355)
• Check the sensors including cam-
era sensors used by the Intuitive
parking assist, or PKSB (if
equipped), or RCD (if equipped)
for foreign matter covering them.
Remove them if any. ( P.342)
• When problems are solved and
the sensors are operational, this
indication may disappear by itself.
■If “System Stopped Front Cam-
era Low Visibility See Owner’s
Manual” is displayed
Indicates one of the following sys-
tems is disabled.
●PCS (Pre-Collision System)
●LDA (Lane Departure Alert)
●LTA (Lane Tracing Assist)
● LCA (Lane Change Assist) (if
equipped)
●AHB (Automatic High Beam)
●Dynamic radar cruise control
● RSA (Road Sign Assist) (if
equipped)
●PDA (Proactive Driving Assist)
Follow the following correction
methods.
• Using the windshield wipers, remove the dirt or foreign matter
from the windshield.
• Using the air conditioning system,
defog the windshield.
• Close the hood, remove any stick- ers, etc. to clear the obstruction in

5718-2. Steps to take in an emergency
8
When trouble arises
front of the front camera.
■If “System Stopped Front Cam-
era Out of Temperature Range
Wait until Normal Tempera-
ture” is displayed
Indicates one of the following sys-
tems is disabled.
●PCS (Pre-Collision System)
●LDA (Lane Departure Alert)
●LTA (Lane Tracing Assist)
● LCA (Lane Change Assist) (if
equipped)
●AHB (Automatic High Beam)
●Dynamic radar cruise control
● RSA (Road Sign Assist) (if
equipped)
●PDA (Proactive Driving Assist)
Follow the following correction
methods.
• If the front camera is hot, such as
after the vehicle is parked in the
sun, use the air conditioning sys-
tem to decrease the temperature
around the front camera
• If a sunshade was used when the vehicle was parked, depending on
its type, the sunlight reflected from
the surface of the sunshade may
cause the temperature of the front
camera to become excessively
high
• If the front camera is cold, such
after the vehicle is parked in an
extremely cold environment, use
the air conditioning system to
increase the temperature around
the front camera
■If “System Stopped Front Radar
Sensor Blocked Clean Radar
Sensor” is displayed
Indicates one of the following sys-
tems is disabled.
●PCS (Pre-Collision System)
●LDA (Lane Departure Alert)
●LTA (Lane Tracing Assist)
● LCA (Lane Change Assist) (if
equipped)
●AHB (Automatic High Beam)
●Dynamic radar cruise control
●PDA (Proactive Driving Assist)
Follow the following correction
methods.
• Check if there is any foreign mat- ter attached to the radar sensor or
radar sensor cover and clean
them if necessary ( P.286)
• This message may be displayed when driving in an open area with
few nearby vehicles or structures,
such as a desert, grasslands, sub-
urbs, etc.
The message may be cleared by
driving the vehicle in an area with
structures, vehicles, etc. nearby.
■If “System Stopped Front Radar
Sensor Out of Temperature
Range Wait until Normal Tem-
perature” is displayed
Indicates one of the following sys-
tems is disabled.
●PCS (Pre-Collision System)
●LDA (Lane Departure Alert)
●LTA (Lane Tracing Assist)
● LCA (Lane Change Assist) (if
equipped)
●AHB (Automatic High Beam)
●Dynamic radar cruise control
●PDA (Proactive Driving Assist)
The temperature of the radar sensor
is outside of the operating range.
Wait for the temperature to become
appropriate.
■If “System Stopped Front Radar
In Self Calibration See Owner’s
Manual” is displayed
Indicates one of the following sys-
tems is disabled.
●PCS (Pre-Collision System)