Page 323 of 624

3234-5. Using the driving support systems
4
Driving
■Situations in which the system may operate even if there is no possibil-
ity of a collision
In some situations, such as the following, the system may opera te even
though there is no possibility of a collision.
● When driving toward a banner, flag, low-hanging branch or boom barrier
(such as those used at railroad crossings, toll gates and parking lots)
● When there is a rut or hole in the surface of the road
● When driving on a metal cover (grating), such as those used for drainage
ditches
● When driving up or down a steep slope
● If a sensor is hit by a large amount of water, such as when dri ving on a
flooded road
● There is dirt, snow, water drops or ice on a sensor. (Cleaning the sensors
will resolve this problem.)
● A sensor is coated with a sheet of spray or heavy rain
● When driving in inclement weather such as fog, snow or a sandst orm
● When vehicle horns, vehicle detectors, motorcycle engines, air brakes of
large vehicles, the clearance sonar of other vehicles or other devices which
produce ultrasonic waves are near the vehicle
● If the front of the vehicle is raised or lowered due to the car ried load
● If the orientation of a sensor has been changed due to a collis ion or other
impact
● The vehicle is approaching a tall or curved curb
● Driving close to columns (H-shaped steel beams, etc.) in multi- story parking
garages, construction sites, etc.
● If the vehicle cannot be driven in a stable manner, such as whe n the vehicle
has been in an accident or is malfunctioning
●
When driving on a narrow road
●When strong winds are blowing
Page 340 of 624

3404-5. Using the driving support systems
■Parking Support Brake f unction (static objects)
Ultrasonic sensors are used to detect static objects, such as a wall,
in the detection area when driving at a low speed or backing up .
( P. 348)
■Parking Support Brake function (rear-crossing vehicles)
Rear radar sensors are used to detect approaching vehicles in t he
detection area behind the v ehicle when backing up. (P. 352)
PKSB (Parking Suppor t Brake)
: If equipped
The Parking Support Brake system consists of the following
functions that operate when dr iving at a low speed or backing
up, such as when parking. When the system determines that the
possibility of a collision with a detected object is high, a wa rning
operates to urge the driver to take evasive action. If the syst em
determines that the possibility of a collision with a detected
object is extremely high, the br akes are automatically applied to
help avoid the collision or help reduce the impact of the colli -
sion.
PKSB (Parking Suppor t Brake) system
Page 341 of 624
3414-5. Using the driving support systems
4
Driving
Front corner sensors
Front center sensors
Rear corner sensors
Rear center sensors
The Parking Support Brake can be enabled/disabled on the multi-
information display. All of the Parking Support Brake functions (static
objects and rear-crossing vehicles) are enabled/disabled simult ane-
ously.
Use the meter control switches t o enable/disable the parking support
brake. ( P. 109, 126)
Press
/ of the meter control switches, select .
Press
/ of the meter control switches, select .
Press of the meter control switch.
Select the “Yes” and push .
When the Parking Support Brake is disabled, the PKSB OFF indica tor illu-
minates.
To re-enable the system when it was disabled, select on the multi-infor-
mation display, select and then “On”. If disabled using this method, the
system will not be re-enabled by turning the power switch off and then to
ON mode.
Types of sensors
1
2
3
4
Turning the Parking Support Brake on/off
1
2
3
4
Page 342 of 624

3424-5. Using the driving support systems
If the hybrid system output restriction control or brake contro l oper-
ates, a buzzer will so und and a message will be displayed on the
multi-information display to alert the driver.
Depending on the situation, hybrid system output restriction co ntrol will
operate to either limit acceleration or restrict output as much as possible.
Displays and buzzers for hybrid system output restriction con-
trol and brake control
ControlSituationMulti-information displayPKSB
OFF
Indicator
Buzzer
Hybrid system
output restriction
control is operat-
ing (acceleration
restriction)Acceleration
greater than a
certain amount is
not possible.“Object Detected
Acceleration
Reduced” Not illu-
minatedNo
beep
Hybrid system
output restriction
control is operat-
ing (output
restricted as
much as possi-
ble)
Stronger-than-
normal brake
operation is nec-
essary.
“Brake!”
Not illu-
minatedShort
beep
Brake control is
operatingEmergency brak-
ing is necessary.
Vehicle stopped
by system opera-
tion
(When accelera-
tor is stepped on)The vehicle has
been stopped by
brake control
operation.
“Switch to
Brake”Illumi-
natedShort
beep
Vehicle stopped
by system opera-
tion
(When accelera-
tor is not stepped
on)
The vehicle has
been stopped by
brake control
operation.
“Brake”
Illumi-
natedShort
beep
Page 343 of 624
3434-5. Using the driving support systems
4
Driving
If the Parking Support Brake function detects that a collision with an
object is possible, the hybrid s ystem output will be restricted to
restrain any increase in the vehicle speed. (Hybrid system outp ut
restriction control: See A below.)
Additionally, if the accelerator pedal continues to be depresse d, the
brakes will be applied automatically to reduce the vehicle spee d.
(Brake control: See B below.)
Parking Support Brake function
Page 344 of 624
3444-5. Using the driving support systems
On
Off
Time
Down
OnOff
Time
On Off
Time
Down
Up
Accelerator pedal
Brake pedal
Hybrid system output
Braking force Start of control
High possibility of a collision
Extremely high possibility of a
collision1
2
3
4
5
6
7
Page 345 of 624

3454-5. Using the driving support systems
4
Driving
■If the Parking Support B rake function has operated
If the vehicle is stopped due to operation of the Parking Suppo rt Brake func-
tion, the Parking Support Brake system will be disabled and the PKSB OFF
indicator will illuminate. If the Parking Support Brake operates unnecessarily,
brake control can be canceled by depressing the brake pedal or waiting for
approximately 2 seconds for it to automatically be canceled. Then, the vehicle
can be operated by depressing the accelerator pedal.
■ Re-enabling the Park ing Support Brake system
To re-enable the Parking Support Brake system when it is disabl ed due to
operation of the Parking Support Brake function, either enable the system
again ( P. 341), or turn the power switch off and then back to ON mode.
Additionally, if the object becomes no longer in the traveling direction of the
vehicle or if the traveling direction of the vehicle changes (such as changing
from moving forward to backing up, or from backing up to moving forward),
the system will be re-enabled automatically.
■ If “PKSB Unavailable” and “Park ing Assist Unavailable Clean Parking
Assist Sensor” are displayed on th e multi-information display and the
PKSB OFF indicator is illuminating
● A sensor may be covered with ice, snow, dirt, etc. In this case , remove the
ice, snow, dirt, etc., from the sensor to return the system to normal. If this
message is shown even after removing dirt from the sensor, or s hown when
the sensor was not dirty to begin with, have the vehicle inspec ted at your
Toyota dealer.
● A sensor may be frozen. Once the ice melts, the system will ret urn to nor-
mal.
● Water may be continuously flowing over the sensor surface, such as in a
heavy rain. When the system determines that it is normal, the system will
return to normal.
Page 346 of 624

3464-5. Using the driving support systems
WARNING
■Cautions regarding the use of the system
Do not overly rely on the system, as doing so may lead to an accident.
Always drive while checking the safety of the surroundings of the vehicle.
Depending on the vehicle and road conditions, weather, etc., the system
may not operate.
The detection capabilities of sensors and radars are limited. A lways drive
while checking the safety of the surroundings of the vehicle.
● The driver is solely responsible for safe driving. Always drive carefully, tak-
ing care to observe your surroundings. The Parking Support Brake system
is designed to provide support to lessen the severity of collisions. How-
ever, it may not operate in some situations.
● The Parking Support Brake system is not designed to stop the vehicle
completely. Additionally, even if the system has stopped the vehicle, it is
necessary to depress the brake pedal immediately as brake control will be
canceled after approximately 2 seconds.
● It is extremely dangerous to check the system operations by int entionally
driving the vehicle into the direction of a wall, etc. Never at tempt such
actions.
■ When to disable the Parking Support Brake
In the following situations, disable the Parking Support Brake as the system
may operate even though there is no possibility of a collision.
● When inspecting the vehicle using a chassis roller, chassis dynamo or free
roller
● When loading the vehicle onto a boat, truck or other transport vessel
● If the suspension has been modified or tires of a size other than specified
are installed
● If the front of the vehicle is raised or lowered due to the carried load
● When equipment that may obstruct a sensor is installed, such as a towing
eyelet, bumper protector (an additional trim strip, etc.), bicycle carrier, or
snow plow
● When using automatic car washing devices
● If the vehicle cannot be driven in a stable manner, such as when the vehi-
cle has been in an accident or is malfunctioning
● When the vehicle is driven in a sporty manner or off-road
● When the tires are not properly inflated
● When the tires are very worn
● When a tire chains or compact spare tire is used