TOYOTA PRIUS PLUG-IN HYBRID 2021 Owners Manual

5215-5. Using the driving support systems
Prius Plug-in Hybrid_OM_OM47D72E_(EE)
5
Driving
WARNING
■ For safe use
Do not rely solely upon the system. Relying solely upon the system may
lead to an unexpected accident.
● Driving safely is the sole responsibility of the driver. Pay careful attention
to the surrounding conditions in order to ensure safe driving. The Parking
Support Brake function can provide suppor t to lessen the severity of colli-
sions. However, it may not operate depending on the situation.
● The Parking Support Brake function is not a system designed to com-
pletely stop the vehicle. Furthermore, even if the Parking Support Brake
function is able to stop the vehicle, brake control is canceled after approxi-
mately 2 seconds, so depress the brake pedal immediately.
■ In order for the system to operate properly
Make sure to observe the following precautions regarding the sensors
( P. 512). Failure to observe these precautions may cause the sensors
not to operate properly, and may result in an unexpected accident.
● Do not perform work such as modification, disassembly or painting
● Only perform replacements using genuine parts
● Do not subject the area around the sensors to any impacts
● Do not damage the sensors, and always keep them clean
■ Handling the suspension
Do not modify the suspension, as changes to the height or incline of the
vehicle may prevent the sensors from correctly detecting obstacles, may
cause the system not operate, or may cause the system to operate unnec-
essarily.

5225-5. Using the driving support systems
Prius Plug-in Hybrid_OM_OM47D72E_(EE)
NOTICE
■Preventing sensor malfunctions
● If the area around a sensor is subjected to an impact, equipment may not
operate properly due to a sensor malfunction. Have the vehicle inspected
at any authorized Toyota retailer or Toyota authorized repairer, or any reli-
able repairer.
● When using a high-pressure washer to wash the vehicle, do not spray
water directly on the sensors. The sensors may not function properly if
subjected to an impact from strong water pressure.
● When using steam to wash the vehicle, do not direct steam too close to
the sensors. The sensors may not function properly if subjected to steam.
■ Preventing unnecessary operation
In the following situations, turn the Parking Support Brake function off. The
system may operate even though there is no possibility of a collision.
● A chassis roller, chassis dynamo, free roller or similar equipment is being
used for an inspection, etc.
● The vehicle is being loaded onto a ship, truck or other transport vessel
● The suspension has been lowered or tires that have a different size than
the genuine tires are equipped
● The height of the vehicle has drastically changed due to the carried load
(the nose tilts up or down).
● A towing eyelet is installed
● When using an automatic car wash

5235-5. Using the driving support systems
Prius Plug-in Hybrid_OM_OM47D72E_(EE)
5
Driving
S-IPA (Simple Intelligent Parking Assist
System)
■Function summary
The Simple Intelligent Parking Assist System automatically oper-
ates the steering wheel to provide support when backing into an
area near a target parking spot, and when departing from a parallel
parking spot. (Changing the shift position and speed adjustment
when moving forward or backing up are not performed automati-
cally.)
● The Simple Intelligent Parking Assist System does not park the
vehicle automatically. It is a system that provides support when
pulling out of a perpendicular or parallel parking spot.
● The Simple Intelligent Parking Assist System provides steering
wheel operation assistance to guide the vehicle toward the
selected intended parking spot. The selected intended parking
spot may not always be reachable, depending on road and vehi-
cle conditions at the time of parking, and the distance to the
intended parking spot.
■Linking with the Parking Support Brake function
While the Simple Intelligent Parking Assist System is operating, if
the system detects an obstacle that could result in a collision, the
emergency brakes operate, regardless of whether the Parking Sup-
port Brake function is on or off. ( P. 525)
: If equipped
Simple Intelligent Parking Assist System
WARNING
●When backing up or proceeding forward, be sure to directly confirm the
safety of the area to the front or rear, and the area around the vehicle, and
slowly back up or proceed forward while adjusting the vehicle speed by
depressing the brake pedal.
● If it seems the vehicle may make contact with a pedestrian, another vehi-
cle or any other obstacles, stop the vehicle by depressing the brake pedal,
and then press the S-IPA switch ( P. 526) to turn the system off.

5245-5. Using the driving support systems
Prius Plug-in Hybrid_OM_OM47D72E_(EE)
Chart of Simple Intelligent Parking Assist System assist modes
and functions
Assist modeType of
parkingFunction summarySee page
Parallel parking
assist modeParallel park-
ing
Guidance is provided to
detect the intended
parking spot and reach a
position to begin back-
ing up from. Assistance
is provided from when
the vehicle begins back-
ing up until it reaches
the intended parking
spot.
P. 529
Exit parallel parking
assist modeExit parallel
parking
Assistance starts after
the vehicle has been
parallel parked. Assis-
tance is provided to
guide the vehicle from
the parking space to a
position from which it
can take off.
P. 536
Back-in parking
assist mode
(with forward guid-
ance function)
Back-in park-
ing
Assistance starts after
stopping the vehicle in
front of the intended
parking spot, and is pro-
vided for backing into a
parking space, including
guidance to reach a
position to begin back-
ing up from.
P. 541

5255-5. Using the driving support systems
Prius Plug-in Hybrid_OM_OM47D72E_(EE)
5
Driving
■Parking Support Brake function while the Simple Intelligent Parking
Assist System is operating
While the Simple Intelligent Parking Assist System is operating, if the system
detects an obstacle that could result in a collision, hybrid system output
restriction control and brake control of the Parking Support Brake function are
operated, regardless of whether the Parking Support Brake function is on or
off. (P. 512)
●After the Parking Support Brake function operates, operation of the Simple
Intelligent Parking Assist System is temporarily stopped, and operation of
the Parking Support Brake function is indicated on the multi-information dis-
play. (P. 516)
●When operation of the Simple Intelligent Parking Assist System is stopped 3
times by operation of the Parking Support Brake function, the Simple Intelli-
gent Parking Assist System is canceled.
●Once the Simple Intelligent Parking Assist System becomes available after
the Parking Support Brake function is operated, a message prompting you
to shift is displayed on the multi-information display. Operation of the Simple
Intelligent Parking Assist System can be resumed by shifting according to
the prompt on the multi-information display and pressing the S-IPA switch
(P. 526) again.
■Shifting while the Simple Intelligent Parking Assist System is operating
If the system determines that the driver intends to move forward or in reverse,
assistance continues even if the driver shifted before being prompted to do so
by the system. However, because driver operation differs from the guidance
provided by the system, the number of turning maneuvers may increase.
■Customization
Settings (e.g. obstacle detection range) can be changed. (Customizable fea-
tures: P. 782)

5265-5. Using the driving support systems
Prius Plug-in Hybrid_OM_OM47D72E_(EE)
■Switching using the S-IPA switch
Press the switch
This allows you to switch func-
tions and cancel or restart assist
modes.
While the power switch is on, the vehicle speed is approximately
30 km/h (19 mph) or less, each time the S-IPA switch is pressed the
function switches as follows.
The selected function is indicated on the operation display area of the
multi-information display. ( P. 527)
*: The back-in parking assist mode can be switched to when its operating
conditions are met ( P. 546). When the operating conditions are not met,
it switches to off.
Switching assist mode
IO55PH104
When the S-IPA switch is
pressed with the shift position
not in P
When the S-IPA switch is
pressed with the shift position
in P
Back-in parking assist mode*
Parallel parking assist mode
Off
Exit parallel parking
assist mode
Off

5275-5. Using the driving support systems
Prius Plug-in Hybrid_OM_OM47D72E_(EE)
5
Driving
The guidance screen is displayed on the multi-information display.
Assistance level indicator
Displays a gauge indicating the
level until the vehicle’s stopping
position/the position at which assist
control ends.
Stop display
When illuminated, depress the
brake pedal and stop the vehicle at
once.
Operation display area
Displays the operating condition of the Simple Intelligent Parking Assist
System.
Advice display
Follow the instructions on the display and perform any indicated opera-
tions. As an example, the illustration shows the display indicating it is nec-
essary to depress the brake pedal in order to control the vehicle speed and
to confirm the safety of your surroundings.
S-IPA switch icon
Displayed when the assist mode can be changed and the system can be
turned off or on using the S-IPA switch.
Steering wheel auto operation display
Displays when the steering wheel auto operation is being performed.
Toyota parking assist-sensor display/door position (open/close) dis-
play
P. 500
■S-IPA indicator inside the meter (P. 218)
This indicator illuminates when the steering wheel auto operation is being
performed by the Simple Intelligent Parking Assist System. After control
ends, the indicator blinks for a short period of time and then turns off.
■Toyota parking assist-sensor pop-up display
While the Simple Intelligent Parking Assist System is operating, if the Toyota
parking assist-sensor function detects an obstacle, the Toyota parking assist-
sensor display automatically pops up on the guidance screen (P. 500),
regardless of whether the Toyota parking assist-sensor function is on or off.
(P. 499)
Guidance screen
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5285-5. Using the driving support systems
Prius Plug-in Hybrid_OM_OM47D72E_(EE)
Assist mode will be canceled or stopped in the following cases.
■Assist control is canceled when
●The system temperature preservation function operates
●There is a system malfunction
●System determined that the parking environment is not suitable
for assist to continue
When assist control is canceled, firmly grasp the steering wheel,
depress the brake pedal and stop the vehicle.
Start again from the beginning, as the system will already be can-
celed. When continuing to park manually, operate the steering
wheel as you normally would.
■Assist control is stopped when
●The steering wheel is operated
●The vehicle speed exceeds 7 km/h (4 mph) during assist control
●The Parking Support Brake function operates
When assist control is stopped, it can be resumed by following the
guidance shown on the screen.
■If the vehicle speed is about to exceed the speed limit during assist con-
trol
Canceling or stopping assist mode
A buzzer sounds and the message indi-
cating there is possibility that the vehicle
speed may exceed the speed limit.
When the message is displayed, immedi-
ately depress the brake pedal to deceler-
ate. If the vehicle continues to accelerate,
assist control will be canceled when the
vehicle speed exceeds a certain speed.
(P. 551)

5295-5. Using the driving support systems
Prius Plug-in Hybrid_OM_OM47D72E_(EE)
5
Driving
■Function summary
If a parking space can be detected, you will be guided forward until
you reach the assist control starting position, and then the parallel
parking assist mode can be used. Furthermore, depending on the
parking space and other conditions, multi-turn maneuvering assist
control is also provided if necessary.
Continue moving forward
with the vehicle parallel to
the curb or road, and stop so
that the center of the target
parking spot appears nearly
perpendicular to the vehicle.
Then press the S-IPA switch
1 time to select the parallel
parking assist mode.
Travel straight ahead paral-
lel with the road or curb so
that the parking space is
detected.
A sound is issued and a display is shown to notify you when the
vehicle reaches a position where assist control can be used to
begin backing up from, and then when the shift position is
changed according to guidance provided by the system, steering
wheel auto operation begins.
If the detected parking space or road width (distance to the side of the
road across from the parking space) is narrow, or if there are obstacles
in front of the vehicle, guidance will not be issued.
Parking is complete
This completes the assist mode. Depending on the condition of the
parking space, guidance to starting points for moving forward and back-
ing up, as well as the steering wheel auto operation, are repeated any
time multi-turn maneuvering is necessary following step from the
time the vehicle begins backing up until parking completes.
How to parallel park (parallel parking assist mode)
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5305-5. Using the driving support systems
Prius Plug-in Hybrid_OM_OM47D72E_(EE)
■Parking
Stop so that the center of the target parking spot appears nearly
perpendicular to vehicle. Then press the S-IPA switch 1 time and
check that the display on the multi-information display switches
to “Parallel Parking”.
● The mode switches each time the S-IPA switch is pressed.
( P. 526)
● When the vehicle speed is approximately 30 km/h (19 mph) or
higher, pressing the S-IPA switch will not cause the screen to
switch to the “Parallel Parking” display.
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