2022 TOYOTA PRIUS PLUG-IN HYBRID Owners Manual

4635-5. Using the driving support systems
Prius Plug-in Hybrid_OM_OM47E75E_(EE)
5
Driving
XThe vehicle moves due to the wrong shift position being
selected

4645-5. Using the driving support systems
Prius Plug-in Hybrid_OM_OM47E75E_(EE)
Front corner sensors
Front center sensors
Rear corner sensors
Rear center sensors
The Parking Support Brake function can be enabled/disabled on t he
screen ( P. 247) of the multi-information display.
When the Parking Support Brake
function is off, the PKSB OFF indi-
cator illuminates.
When the Parking Support Brake function is switched off, system operation
does not resume until the function is switched back on through the
screen on the multi-information display. (System operation does not
resume by operating the power switch.)
Types of sensors
1
2
3
4
Changing settings of the Parking Support Brake function

4655-5. Using the driving support systems
Prius Plug-in Hybrid_OM_OM47E75E_(EE)
5
Driving
When the Parking Support Brake function detects an obstacle with a
probability of collision, hybrid system output is restricted to restrain an
increase in vehicle speed. (Hybrid system output restriction control: A)
Furthermore, when the accelerator pedal continues to be depressed,
the brakes are applied to reduce the vehicle speed. (Brake control: B)
Operation

4665-5. Using the driving support systems
Prius Plug-in Hybrid_OM_OM47E75E_(EE)
DOWN
DOWN
UP
ON
OFF
ON
OFF
ON
OFF
Accelerator pedal
Brake pedal
Hybrid system output
Braking force
Control starts
Collision is possible
Collision is likely
1
2
3
4
5
6
7

4675-5. Using the driving support systems
Prius Plug-in Hybrid_OM_OM47E75E_(EE)
5
Driving
QOperation starting conditions
When the PKSB OFF indicator is not illuminated or flashing
(P. 470, 660) and all of the following conditions are met, the
system operates.
Hybrid system output restriction control
OThe Parking Support Brake function is on.
OThe vehicle speed is approximately 15 km/h (10 mph) or less.
OThere is an obstacle in the traveling direction of the vehicle
(approximately 2 to 4 m [6 to 13 ft.] ahead).
OThe system determined that a stronger-than-normal brake opera-
tion was necessary to avoid a collision.
Brake control
OHybrid system output restriction control is being performed.
OThe system determined that an emergency brake operation was
necessary to avoid a collision.
QOperation ending conditions
In any of the following situations, the system stops operating.
Hybrid system output restriction control
OThe Parking Support Brake function has been turned off
(stopped).
OThe collision became avoidable with normal brake operation.
OThe obstacle is no longer in the traveling direction of the vehicle
(approximately 2 to 4 m [6 to 13 ft.] ahead).
Brake control
OThe Parking Support Brake function has been turned off
(stopped).
OApproximately 2 seconds elapsed after the vehicle was stopped
by brake control.
OThe brake pedal was depressed after the vehicle was stopped by
brake control.
OThe obstacle is no longer in the traveling direction of the vehicle
(approximately 2 to 4 m [6 to 13 ft.] ahead).
Operation conditions

4685-5. Using the driving support systems
Prius Plug-in Hybrid_OM_OM47E75E_(EE)
When the hybrid system output restriction control or brake control
operates, the buzzer sounds and a message is displayed on the multi-
information display to alert the driver.
Depending on the situation, output restriction control operates to either
limit acceleration or restrict output as much as possible.
Display and buzzer for hybrid system output restriction control
and brake control
ControlSituationMulti-information
displayPKSB OFF
IndicatorBuzzer
Hybrid sys-
tem output
restriction
control is
operating
(accelera-
tion limita-
tion control)
Accelera-
tion at a cer-
tain speed
or higher is
not possible.
Not
illuminated
Short
beep
Hybrid sys-
tem output
restriction
control is
operating
(control to
restrict out-
put as much
as possible)
A stronger-
than-normal
brake opera-
tion is nec-
essary
Not
illuminated
Brake con-
trol is oper-
atingEmergency
braking is
necessary
The vehicle
is stopped
by system
operationThe vehicle
is stopped
after brake
control oper-
ation
Illuminated

4695-5. Using the driving support systems
Prius Plug-in Hybrid_OM_OM47E75E_(EE)
5
Driving
QSensor detection range
The detection range of the Parking Support Brake function differs from the
detection range of the Toyota parking assist-sensor. (P. 455)
Therefore, even if the Toyota parking assist-sensor detects an obstacle and
provides a warning, the Parking Support Brake function may not start operat-
ing.
QSystem operation
When the vehicle is stopped by system operation, the Parking Support Brake
function stops and the PKSB OFF indicator illuminates.
QSystem recovery
When the Parking Support Brake function is stopped by system operation
and you would like to resume operation, either turn the Parking Support
Brake function on again (P. 464), or turn the power switch off and then back
on. Furthermore, when the vehicle moves with an obstacle no longer in the
traveling direction of the vehicle, or when the traveling direction of the vehicle
changes (such as when switching from moving forward to backing up, and
vice versa), system operation automatically resumes.
QObstacles not detected by the sensors
The following obstacles may not be detected by the sensors.
OObjects such as people, cloth and snow, that are difficult for sonic waves to
reflect off of. (In particular, people may also not be detected depending on
the type of clothing they are wearing.)
OObjects not perpendicular with the ground, objects not at a right angle to the
traveling direction of the vehicle, uneven objects or waving objects
OLow objects
OThin objects such as wires, fences, ropes and signposts
OObjects that are extremely close to the bumper
QSituations in which the system may not operate properly
P. 457
QSituations in which the system may operate even if there is no possibil-
ity of a collision
P. 459
QIn the unlikely event that the Parking Support Brake function mistakenly
operates at a crossing or elsewhere
Even in the unlikely event that the Parking Support Brake function mistakenly
operates at a crossing or elsewhere, brake control is canceled after approxi-
mately 2 seconds, allowing you to proceed forward and leave the area. Fur-
thermore, brake control is also canceled when the brake pedal is depressed.
Depressing the accelerator pedal again allows you to proceed forward and
leave the area.

4705-5. Using the driving support systems
Prius Plug-in Hybrid_OM_OM47E75E_(EE)
Q When removing and installing the 12-volt battery
The system needs to be initialized.
The system can be initialized by driving the vehicle straight a head for 5 sec-
onds or more at a speed of approximately 35 km/h (22 mph) or hi gher.
Q When “PKSB Unavailable” is displayed on the multi-information display
and the PKSB OFF indicator flashes
O Ice, snow, dirt, etc., may have adhered to the sensor. If this occurs, remove
the ice, snow, dirt, etc., from the sensor to return the system to normal.
Also, a warning message may be displayed at low temperatures du e to ice
forming on the sensor, and the sensor may not detect obstacles. Once the
ice melts, the system will return to normal.
O If this message is shown even after removing dirt from the sensor, or shown
when the sensor was not dirty to begin with, have the vehicle i nspected at
any authorized Toyota retailer or Toyota authorized repairer, o r any reliable
repairer.
Q When “PKSB Malfunction Visit Your Dealer” is displayed on the multi-
information display, the PKSB OFF indicator flashes and the buz zer
sounds
The system may not be operating properly. Have the vehicle insp ected at any
authorized Toyota retailer or Toyota authorized repairer, or an y reliable
repairer.
WARNING
Q Cautions regarding the use of the system
Do not rely solely upon the system. Relying solely upon the sys tem may
lead to an unexpected accident.
O 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 support to lessen the severi ty of colli-
sions. However, it may not operate depending on the situation.
O The Parking Support Brake function is not a system designed to com-
pletely stop the vehicle. Furthermore, even if the Parking Supp ort Brake
function is able to stop the vehicle, brake control is canceled after approxi-
mately 2 seconds, so depress the brake pedal immediately.
O It is extremely dangerous to check the system operations by intentionally
driving the vehicle into the direction of a wall, etc. Never at tempt such
actions.