2023 TOYOTA PRIUS PRIME park assist

3455-5. Using the driving support systems
5
Driving
Emergency Driving
Stop System
The emergency driving stop
system is a system which
automatically decelerates
and stops the vehicle within
its lane if the driver
becomes unable to continue
driving the vehicle, such as
if they have suffered a medi-
cal emergency, etc.
During LTA (Lane Tracing
Assist) control, if the sys-
tem does not detect driving
operations, such as if the
driver is not holding the
steering wheel, and deter-
mines the driver is not
responsive, the vehicle will
be decelerated and stopped
within its current lane to
help avoid a collision or
reduce the impact of a colli-
sion.
The vehicle will also decel-
erate/stop during the Traffic
Jam Assist (if equipped)
controls, when no driver’s
response to the vehicle’s
warning to hold the steering
wheel is detected.
WARNING
■For safe use
●Driving safely is solely the
responsibility of the driver. Pay
careful attention to the sur-
rounding conditions in order to
ensure safe driving. The emer-
gency driving stop system is
designed to provide support in
an emergency where it is diffi-
cult for the driver to continue
driving, such as if they have had
a medical emergency. It is not
designed to support driving
while drowsy or in poor physical
health, or inattentive driving.
●Although the emergency driv-
ing stop system is designed to
decelerate the vehicle within its
lane to help avoid or help
reduce the impact of a collision
if the system determines that it
is difficult for the driver to con-
tinue driving, its effectiveness
may change according to vari-
ous conditions. Therefore, it
may not always be able to
achieve the same level of per-
formance. Also, if the operating
conditions are not met, this
function will not operate.
●After the emergency driving
stop system operates, if driving
becomes possible again, imme-
diately begin driving again or, if
necessary, park the vehicle on
the shoulder of the road and set
a warning reflector and flare to
warn other drivers of your
stopped vehicle.
●After this system operates, pas-
sengers should attend to the
driver as necessary and take
appropriate hazard prevention
measures, such as moving to a
place where safety can be
ensured, such as the shoulder
of the road or behind a guard-
rail.

3465-5. Using the driving support systems
Operation of this system is sep-
arated into 4 control states.
Through control state “warning
phase 1” and “warning phase 2”,
the system determines if the
driver is aware and responsive
while outputting a warning and
controlling the vehicle speed. If
the system determines the
driver is not responsive, it will
operate in control state “deceler-
ation stop phase” and “stop hold
phase” and decelerate and stop
the vehicle. It will then operate
continuously in “stop hold
phase”.
■Operating conditions
This system operates when all of
the following conditions are met:
●When the LTA is on
Or during the Traffic Jam Assist (if
equipped) controls
●When the vehicle speed is
approximately 30 mph (50 km/h) or more
During the Traffic Jam Assist con-
trols (if equipped), the system may
operate at below 30 mph (50 km/h).
■Operation cancelation condi-
tions
In the following si tuations, system
operation will be canceled:
●When LTA control has been can-
celed (the LTA switch has been
pressed, etc.)
●When the dynamic radar cruise
control has been canceled
●When driver operations are
detected (the steering wheel is
held, the brake pedal, accelerator
pedal, parking brake, emergency
flasher switch, or turn signal lever
is operated)
●When the driving assist switch is
pressed while in the stop and hold
phase
●When the power switch has been
turned from ON to off
●Situations in which some or all of
the functions of the system cannot
operate: P.291
■LTA control when operation is
canceled
When emergency driving stop sys-
tem operation is canceled, LTA con-
trol may also be canceled.
If driving operations are not
detected after the hands off
steering wheel warning oper-
ates, a buzzer will sound inter-
mittently and a message will be
displayed to warn the driver, and
the system will judge if the driver
is responsive or not. If driving
operations, such as holding the
steering wheel, are not per-
WARNING
●This system detects the condi-
tion of the driver through the
operation of the steering wheel.
This system may operate if the
driver is aware but intentionally
and continuously does not oper-
ate the vehicle. Also, the system
may not operate if it cannot
determine that the driver is not
responsive, such as if they are
leaning on the steering wheel.
●Situations in which the driver
monitor may not operate prop-
erly: P.291
Summary of the system
Warning phase 1

3475-5. Using the driving support systems
5
Driving
formed within a certain amount
of time, the system will enter
warning phase 2.
Vehicles with a driver monitor
camera: Depending on the type
of detection of the driver’s unre-
sponsiveness, the system may
skip warning phase 1 and start
the control of warning phase 2.
After entering warning phase 2,
a buzzer will sound in short
intervals and a message will be
displayed to warn the driver, and
the vehicle will slowly deceler-
ate. If driving operations, such
as holding the steering wheel,
are not performed within a cer-
tain amount of time, the system
will determine that the driver is
not responsive and enter the
deceleration stop phase.
The audio system will be muted
until the driver becomes respon-
sive.
When the vehicle is decelerat-
ing, the brake lights may illumi-
nate, depending on the road
conditions, etc.
After entering the deceleration
stop phase, a buzzer will sound
continuously and a message will
be displayed to warn the driver,
and the vehicle will slowly decel-erate and stop. After the vehicle
stops, the system will enter the
stop and hold phase.
After the vehicle is stopped, the
parking brake will be applied
automatically. After entering the
stop and hold phase, the buzzer
will continue sounding continu-
ously and the emergency flash-
ers (hazard lights) will flash to
warn other drivers of the emer-
gency.
■Restricted functions after the
operation is canceled
After shifting to the deceleration
stop phase, the following functions
will not be available until the hybrid
system is re-started even though
the emergency driving stop system
is canceled:
●LTA
●LCA (if equipped)
●Traffic Jam Assist (if equipped)
Warning phase 2
Deceleration stop phase
Stop hold phase

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

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

3625-5. Using the driving support systems
door)
■Conditions under which the
system will not detect a vehicle
●Safe exit assist does not detect
the following objects, vehicles,
and bicycles:
• Vehicles or bicycles which are
approaching slowly
*
• Vehicles or bicycles which are determined to have a low possibil-
ity of colliding with a door (other
than the back door) when opened
*
• Vehicles or bicycles which are
approaching from directly behind*
• Vehicles or bicycles which are approaching from the front*
• Guardrails, walls , signs, parked
vehicles, and other stationary
objects
*
• Pedestrians, animals, etc.*
*
: Depending on the conditions, detection of a vehicle and/or
object may occur.
●In situations such as the following,
safe exit assist will not operate:
• When 3 minutes or more have elapsed since the hybrid system
off (the time which operation is
possible may be extended if a
door is opened and closed)
• When your vehicle is not com- pletely stopped
■Conditions under which the
system may not function cor-
rectly
●The safe exit assist 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 a vehicle or bicycle approaches from behind a nearby
parked vehicle
• When an approaching vehicle or
bicycle suddenly changes direc-
tion
• Immediately after a vehicle or
bicycle starts moving
• When the back door is open
• When a bicycle carrier, ramp, or other accessory is installed to the
back of the vehicle
• When a parked vehicle, wall, sign,
person or other stationary object
is behind the vehicle
• When the vehicle is stopped at an
angle to the road
• When a vehicle is traveling near an approaching vehicle or bicycle
• When an approaching vehicle or bicycle is traveling along a station-
ary object, such a wall or sign
• When a vehicle or bicycle is approaching at high speed
• When towing with the vehicle
• When stopped on a steep slope
• When stopped on a curve or at the exit of a curve
●Instances of the safe exit assist
unnecessarily detecting a vehicle
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 a vehicle or bicycle
approaches from behind your
vehicle at an angle
• When the vehicle is stopped at an
angle to the road
• When a vehicle or bicycle approaches from behind a parked
vehicle at an angle
• When a parked vehicle, wall, sign, person or other stationary object
is behind the vehicle
• When an approaching vehicle or bicycle suddenly changes direc-
tion
• When an approaching vehicle or bicycle is traveling along a station-
ary object, such a wall or sign
• When the back door is open
• When a bicycle carrier, ramp, or other accessory is installed to the

3635-5. Using the driving support systems
5
Driving
back of the vehicle
• When a vehicle or bicycle is approaching at high speed
• When towing with the vehicle
• When stopped on a steep slope
• When stopped on a curve or at the exit of a curve
■Types of sensors
Front corner sensors
Front center sensors
Rear corner sensors
Rear center sensors
Front side sensors
*
Rear side sensors*
*: Vehicles with Advanced Park
■Display
When the sensors detect an
object, such as a wall, a graphic
is shown on the Multimedia Dis-
Intuitive parking
assist
The distance from your
vehicle to objects, such as a
wall, when parallel parking
or maneuvering into a
garage is measured by the
sensors and communicated
via the Multimedia Display
and a buzzer. Always check
the surrounding area when
using this system.
System components
A
B
C
D
E
F

3645-5. Using the driving support systems
play depending on the position
and distance to the object.
Display example:Front corner sensor detection
Front center sensor detection
Rear corner sensor detection
Rear center sensor detection
Front side sensor detection
*
Rear side sensor detection*
*: Vehicles with Advanced Park
The intuitive parking assist can
be enabled/disabled on of
the multi-information display.
( P.166)
When the intuitive parking assist
function is disabled, the intuitive
parking assist OFF indicator
( P.152) illuminates.
To re-enable the system, select on the multi-information dis-
play, select the intuitive parking
assist and turn it on. If the sys-
tem is disabled, it will remain off even if the power switch is
turned to ON after the power
switch has been turned off.
Turning the intuitive park-
ing assist on/off
A
B
C
D
E
F
WARNING
■Cautions regarding the use of
the system
There is a limit to the degree of
recognition accuracy and control
performance that this system can
provide, do not overly rely on this
system. The driver is always
responsible for paying attention to
the vehicle’s surroundings and
driving safely.
■To ensure the system can
operate properly
Make sure to observe the follow-
ing precautions. The system may
not operate properly and may
lead to an unexpected accident.
When these precautions cannot
be observed, turn the system off.
●Do not damage the sensors,
and always keep them clean.
●Do not attach a st icker or install
an electronic component, such
as a backlit license plate (espe-
cially fluorescent type), fog
lights, fender pole or wireless
antenna near a radar sensor.
●Do not subject the surrounding
area of the sensor to a strong
impact. If subjected to an
impact, have the vehicle
inspected by your Toyota
dealer. If the front or rear
bumper needs to be
removed/installed or replaced,
contact your Toyota dealer.
●Do not modify, disassemble or
paint the sensors.
●Do not attach a license plate
cover.