2023 TOYOTA PRIUS PRIME sensor

3485-5. Using the driving support systems
*: If equipped
■Precautions for use
 P.289
 Sensors which detect the sur-
rounding conditions ( P.286)
 Sensors which detect the
driver condition ( P.286)
■Situations in which some or all
of the functions of the system
cannot operate
 P.291
■Changes in brake operation
sound and pedal response
 P.291
■Situations in which the driver
monitor may not operate prop-
erly
 P.291
P.345
 P.333
The Traffic Jam Assist function,
through confirmation of the con-
ditions by the driver, provides
lane keeping, accelerat-
ing/decelerating and stopping
support on some highways and
expressways.
This function is operable when
all of the operation conditions
are met. When this function is
operating, it is possible to take
your hands off of the steering
wheel.
Before using the Traffic Jam Assist
function, familiari ze yourself with
the content of the dynamic radar
cruise control and the LTA (Lane
Tracing Assist).
Make sure that the driver steers the
vehicle when entering a service
area/parking area or toll gate, or
when changing lanes.
■Driver monitor camera
recording
When the operation of Traffic
Traffic Jam Assist*
Traffic Jam Assist is a sys-
tem which, through confir-
mation of the conditions by
the driver, provides lane
keeping, accelerating/decel-
erating, stopping, and start-
ing off support on some
highways and express-
ways. Also, in an emer-
gency, the system can
decelerate and stop, to help
avoid a collision or help
reduce the impact of a colli-
sion.
Sensors that support the
Traffic Jam Assist
Emergency Driving Stop
System
Extended resume time of
dynamic radar cruise con-
trol
Traffic Jam Assist Func-
tion

3505-5. Using the driving support systems
WARNING
●The Traffic Jam Assist function
cannot detect the following
objects. Operate the steering
wheel, accelerator pedal, or
brake pedal as necessary to
avoid a collision. As the function
will not be able to provide
appropriate control, using it may
lead to an accident resulting in
death or serious injury.
• Objects on the road surface
• Vehicles outside of a lane (such as on the shoulder of the road)
• Potholes, cracks, ruts, or other road damage
• Road construction zones
• Vehicles running in parallel with your vehicle or nearby walls
• Animals
■Situations in which Traffic
Jam Assist Function should
not be used
Do not use Traffic Jam Assist
Function in situations such as the
following. As the system will not
be able to provide appropriate
control, using it may lead to an
accident resulting in death or seri-
ous injury.
■When it is necessary to dis-
able the system
 P.284
■Situations in which the sen-
sors may not operate prop-
erly
 P.289
■Situations in which the lane
may not be detected
 P.291
■Situations in which the func-
tion may not operate properly
In situations such as the following,
the Traffic Jam Assist function
may not operate properly. Manu-
ally operate the vehicle as neces-
sary.
●When a sensor is splashed by
water
●When the ambient temperature
is high or low
●When a vehicle cuts in front of
your vehicle
●When another lane merges into
the lane in the same traveling
direction as your vehicle
●When driving in low visibility
conditions
●When the vehicle posture is
changing
●When the traction on the road
surface differs greatly between
the left and right side tires
●When driving on an expressway
with no median strips or when
driving on an expressway
equipped with temporary
median markers, such as poles.
●When there is a significant dif-
ference in speed between your
vehicle and the other vehicle
●The map data has not been
updated properly.
■To prevent malfunction of the
radar sensors
 P.286
■To prevent malfunction of the
front camera
 P.287

3545-5. Using the driving support systems
*: If equipped
Meter control switches
Turning the Blind Spot Monitor
on/off.
Outside rear view mirror indi-
cators
When a vehicle is detected in a
blind spot of the outside rear view
mirrors or approaching rapidly from
behind into a blind spot, the outside
rear view mirror indicator (P.152)
on the detected side will illuminate.
If the turn signal lever is operated
toward the detected side, the out-
side rear view mirror indicator will
flash and a buzzer will sound.
Driving assist information
indicator
Illuminates when the Blind Spot
Monitor is turned off. At this time, a
message will be displayed on the
multi-informat ion display.
■Outside rear view mirror indica-
tor visibility
In strong sunlight, the outside rear
view mirror indicator may be difficult
to see.
■Buzzer
If the volume setting of the audio
system is high or the surrounding
area is loud, it may be difficult to
BSM (Blind Spot Moni-
tor)*
The Blind Spot Monitor is a
system that uses rear side
radar sensors installed on
the inner side of the rear
bumper on the left and right
side to assist the driver in
confirming safety when
changing lanes.
WARNING
■Cautions regarding the use of
the system
●The driver is solely responsible
for safe driving. Always drive
safely, taking care to observe
your surroundings.
●The Blind Spot Monitor is a sup-
plementary function which alerts
the driver that a vehicle is in a
blind spot of the outside rear
view mirrors or is approaching
rapidly from behind into a blind
spot. Do not overly rely on the
Blind Spot Monitor. As the func-
tion cannot judge if it is safe to
change lanes, over reliance
could lead to an accident result-
ing in death or serious injury. As
the system may not function
correctly under certain condi-
tions, the driver’s own visual
confirmation of safety is neces-
sary.
System components
A
B
C

3555-5. Using the driving support systems
5
Driving
hear the buzzer.
■Customization
Some functions can be customized.
(  P.618)
The Blind Spot Monitor can be
enabled/disabled through a cus-
tomize setting. ( P.618)
When the Blind Spot Monitor is
off, the driving assist information
indicator ( P.152) will illumi-
nate and a message will be dis-
played on the multi-information
WARNING
■To ensure the system can
operate properly
Blind Spot Monitor sensors are
installed behind the left and right
sides of the rear bumper respec-
tively. Observe the following to
ensure the Blind Spot Monitor can
operate correctly.
●Keep the sensors and the sur-
rounding areas on the rear
bumper clean at all times.
If a sensor or its surrounding
area on the rear bumper is dirty
or covered with snow, the Blind
Spot Monitor may not operate
and a warning message will be
displayed. In this situation, clear
off the dirt or snow and drive the
vehicle with the operation condi-
tions of the BSM function
(  P.357) satisfied for approxi-
mately 10 minutes. If the warn-
ing message does not
disappear, have the vehicle
inspected by your Toyota
dealer.
●Do not attach accessories,
stickers (including transparent
stickers), aluminum tape, etc. to
a sensor or its surrounding area
on the rear bumper.
●Do not paint the surrounding
area of a sensor on the rear
bumper.
●Do not subject a sensor or its
surrounding area on the rear
bumper to a strong impact.
If a sensor is moved even
slightly off position, the system
may malfunction and vehicles
may not be detected correctly.
In the following si tuations, have
your vehicle inspected by your
Toyota dealer.
• A sensor or its surrounding area is subject to a strong impact.
• If the surrounding area of a sen- sor is scratched or dented, or
part of them has become dis-
connected.
●Do not disassemble the sensor.
●Do not modify the sensor or sur-
rounding area on the rear
bumper.
●If a sensor or the rear bumper
needs to be removed/installed
or replaced, contact your
Toyota dealer.
●The sensors are likely to be
affected by paint on the rear
bumper. If the rear bumper is
not repaired correctly, the Blind
Spot Monitor may not operate
with a warning message dis-
played. If any paint repair is
needed, contact your Toyota
dealer.
Turning the Blind Spot
Monitor on/off

3565-5. Using the driving support systems
display.
Each time the power switch is turned to ON, the Blind Spot
Monitor is enabled.
■Objects that can be detected while driving
The Blind Spot Monitor uses rear side radar sensors to detect the
following vehicles trav eling in adjacent lanes and advises the driver
of the presence of such vehicles via the indicators on the outside
rear view mirrors.
Vehicles that are traveling in areas that are not visible using the
outside rear view mirrors (the blind spots)
Vehicles that are approaching r apidly from behind in areas that
are not visible using the outside rear view mirrors (the blind spots)
■Detection range while driving
The areas that vehicles can be detected in are outlined below.
The range of each detection area is:
Approximately 1.6 ft. (0.5 m) to 11.5 ft. (3.5 m) from either side of
the vehicle
*1
Approximately 3.3 ft. (1 m) forward of the rear bumper*2
Blind Spot Monitor operation
A
B
A
B

3585-5. Using the driving support systems
adjacent lane at a much higher
speed than it*
*
: Depending on the situations, a buzzer may sound.
■Conditions under which the
system may not function cor-
rectly
●The Blind Spot Monitor may not
detect vehicles correctly in the fol-
lowing situations:
• When the sensor is misaligned
due to a strong impact to the sen-
sor or its surrounding area
• When mud, snow, ice, a sticker,
etc. is covering the sensor or sur-
rounding area on the rear bumper
• When driving on a road surface
that is wet with standing water
during bad weather, such as
heavy rain, snow, or fog
• When multiple vehicles are approaching with only a small gap
between each vehicle
• When the distance between your vehicle and a following vehicle is
short
• When there is a significant differ- ence in speed between your vehi-
cle and the vehicle that enters the
detection area
• When the difference in speed between your vehicle and another
vehicle is changing
• When a vehicle enters a detection area traveling at about the same
speed as your vehicle
• As your vehicle starts from a stop, a vehicle remains in the detection
area
• When driving up and down con- secutive steep inclines, such as
hills, dips in the road, etc.
• When driving on roads with sharp bends, consecutive curves, or
uneven surfaces
• When vehicle lanes are wide, or when driving on the edge of a
lane, and the vehicle in an adja-
cent lane is far away from your
vehicle
• When an accessory (such as a
bicycle carrier) is installed to the rear of the vehicle
• When there is a significant differ- ence in height between your vehi-
cle and the vehicle that enters the
detection area
• Immediately after the Blind Spot
Monitor is turned on
• When towing with the vehicle●Instances of the Blind Spot Moni-
tor unnecessarily detecting a vehi-
cle and/or object may increase in
the following situations:
• When the sensor is misaligned due to a strong impact to the sen-
sor or its surrounding area
• When the distance between your vehicle and a guardrail, wall, etc.
that enters the detection area is
short
• When driving up and down con-
secutive steep inclines, such as
hills, dips in the road, etc.
• When vehicle lanes are narrow, or
when driving on the edge of a
lane, and a vehicle traveling in a
lane other than the adjacent lanes
enters the detection area
• When driving on roads with sharp bends, consecutive curves, or
uneven surfaces
• When the tires are slipping or spinning
• When the distance between your vehicle and a following vehicle is
short
• When an accessory (such as a bicycle carrier) is installed to the
rear of the vehicle
• When towing with the vehicle

3595-5. Using the driving support systems
5
Driving
*: If equipped
Multi-information display
Turning the safe exit assist on/off.
If collision with a door is likely and
the door is opened, the door will be
displayed on the multi-information
display. Also, if a door is opened
when an outside rear view mirror
indicator is illuminated, a buzzer
will sound as a warning.
Outside rear view mirror indi-
cators
When a vehicle or bicycle which
may collide with a door (other than
the back door) when opened is
detected, the outside rear view mir-
ror indicator ( P.152) on the
detected side will illuminate. If the
door on the detected side is
opened, the outside rear view mir-
ror indicator will blink.
Driving assist information
indicator
Illuminates when the safe exit
assist is turned of f. At this time, a
message will be displayed on the
multi-informat ion display.
Speakers
When the outside rear view mirror
indicator blinks, the driver is
informed through voice guidance
Safe Exit Assist*
The safe exit assist is a sys-
tem that uses rear side
radar sensors installed on
the inner side of the rear
bumper to help occupants
judge if an approaching
vehicle or bicycle may col-
lide with a door when exit-
ing, to help reduce the
possibility of a collision.
WARNING
■Cautions regarding the use of
the system
●The driver is solely responsible
for safe driving. Always drive
safely, taking care to observe
your surroundings.
●The safe exit assist is a supple-
mentary system that, when the
vehicle is stopped, informs
occupants of th e existence of
approaching vehicles and bicy-
cles. As this system alone can-
not be used to judge safety,
over-reliance on this system
may lead to an accident result-
ing in death or serious injury.
In certain situations, this system
may not function to its fullest
extent. Therefore it is necessary
for the occupants to visually
check for safety directly and using
the mirrors.
System components
A
B
C
D

3605-5. Using the driving support systems
that the system has operated. After
the notification through voice guid-
ance is made, no more voice guid-
ance notifications will be made
again until the door is fully closed.
■Outside rear view mirror indica-
tor visibility
In strong sunlight, the outside rear
view mirror indicator may be difficult
to see.
■Buzzer
If the volume setting of the audio
system is high or the surrounding
area is loud, it may be difficult to
hear the buzzer.
■Voice notifications
In the following situations, voice
notifications will not be output:
●When it is estimated that no occu-
pants are on board*
●After opening a door and entering
the vehicle, until the hybrid system
is started
●When 3 minutes or more have
elapsed since the hybrid system
was stopped
●When the language setting of the
Multimedia Display has been set
to a language that does not sup-
port voice notifications
●When all of the doors have been
locked from outside the vehicle
●When a door remains open for 1
minute or more after the hybrid
system is stopped
●When the ACC mode ( P.618)
has been enabled through a cus- tomize setting on the Multimedia
Display and the hybrid system has
been stopped
●When the parking assist volume
setting on the Multimedia Display
has been set to off
*: For each seating position, judg-
ment is made based on the open-
ing and closing of a door, before
driving for ingress and after driv-
ing for egress.
■Customization
Some functions can be customized.
(  P.618)
The safe exit assist system can
be enabled/disabled through a
customize setting. ( P.618)
When the safe exit assist is off,
the driving assist information
indicator will illuminate and a
message will be displayed on
the multi-information display.
Each time the power switch is
turned to ON, the safe exit
assist is enabled.
■Objects that can be detected by the safe exit assist
When the safe exit assist detects the following vehicles or bicycles
behind your vehicle using a rear si de radar sensor, the occupants of
the vehicle are informed through an outside rear view mirror indica-
WARNING
■To ensure the system can
operate properly
 P.355
Turning the safe exit
assist system ON/OFF
Safe exit assist operation