2022 TOYOTA YARIS sensor

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4-5. Using the driving support systems
Driving
*: If equipped
■Parking Support Brake func-
tion (static objects)
 P. 2 7 0
■Parking Support Brake func-
tion (rear-crossing vehicles)
 P. 2 7 3
PKSB (Parking Support
Brake)*
The Parking Support Brake
system consists of the follow-
ing functions that operate
when driving 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 warning oper-
ates to urge the driver to take
evasive action. If the system
determines that the possibility
of a collision with a detected
object is extremely high, the
brakes are automatically
applied to help avoid the colli-
sion or help reduce the impact
of the collision.
PKSB (Parking Support
Brake) system
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 vehi- cle.
Depending on the vehicle and road
conditions, weather, etc., the system may not operate.
The detection capabilities of sensors
and radars are limited. Always drive while checking the safety of the sur-roundings of the vehicle.
●The driver is solely responsible for safe driving. Always drive carefully,
taking care to observe your sur- roundings. The Parking Support Brake system is designed to pro-
vide support to lessen the severity of collisions. However, 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 intention-
ally driving the vehicle into the direction of a wall, etc. Never attempt such actions.
■When to disable the Parking Sup-port 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

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4-5. Using the driving support systems
The Parking Support Brake can be
enabled/disabled on the multi-infor-
mation display. All of the Parking
Support Brake functions (static
objects and rear-crossing vehicles)
are enabled/disabled simultane-
ously.
Use the meter control switches to
enable/disable the parking support
brake. ( P.104, 110)
1 Press / (vertical display)
or / (horizontal display)
of the meter control switch to
select .
2 Press / (vertical display)
or / (horizontal display)
of the meter control switch to
select and then press .
WARNING
●When loading the vehicle onto a boat, truck or other transport vessel
●If the suspension has been modi-fied 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 tow- ing 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 vehicle 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, compact spare tire or an emergency tire puncture repair kit is used
NOTICE
■If “PKSB Unavailable” is dis-played on the multi-information
display and the PKSB OFF indi- cator is on
If this message is displayed immedi-
ately after the power switch is changed to ON, operate the vehicle carefully, paying attention to your sur-
roundings. It may be necessary to drive the vehicle for a certain amount of time before the system returns to
normal. (If the system is not return to normal after driving for a while, clean the sensors and their surrounding
area on the bumpers.)
Enabling/Disabling the Park-
ing Support Brake

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4-5. Using the driving support systems
Driving
it to automatically be canceled. Then,
the vehicle can be operated by depress- ing the accelerator pedal.
■Re-enabling the Parking Support Brake
To re-enable the Parking Support Brake when it is disabled due to operation of the Parking Support Brake, either
enable the system again ( P.266), or turn the power switch off and then back to ON. 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 mov-ing forward), the system will be re-
enabled automatically.
■If “PKSB Unavailable” is displayed on the multi-information display and the PKSB OFF indicator is on
If the vehicle is stopped due to operation of the Parking Support Brake, the Park-ing Support Brake will be disabled and
the PKSB OFF indicator will illuminate.
●A sensor may be covered with water
drops, ice, snow, dirt, etc. Remove the water drops, ice, snow, dirt, etc., from the sensor to return the system to nor-
mal. Also, due to ice forming on a sensor at low temperatures, a warning message
may be displayed or the sensor may not be able to detect an object. Once the ice melts, the system will return to
normal.
●If this message is displayed, a sensor
on the front or rear bumper may be dirty. Clean the sensors and their sur-rounding area on the bumpers.
●If this message continues to be dis-played even after cleaning the sensor,
or is displayed even though the sen- sor is clean, have the vehicle inspected by any authorized Toyota
retailer or Toyota authorized repairer, or any reliable repairer.
■If a 12-volt battery terminal has
been disconnected and recon- nected
The system needs to be initialized. To
initialize the system, drive the vehicle straight ahead for 5 seconds or more at a speed of approximately 35 km/h (22
mph) or more.

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4-5. Using the driving support systems
*: If equipped
This function will operate in situations such as the following if an object is
detected in the traveling direction of the vehicle.
■When traveling at a low speed and the brake pedal is not
depressed, or is depressed late
Parking Support Brake function (static objects)*
If the sensors detect a static object, such as a wall, in the traveling
direction of the vehicle and the system determines that a colli sion
may occur due to the vehicle suddenly moving forward due to an
accidental accelerator pedal operation, the vehicle moving the unin-
tended direction due to the wrong shift position being selected, or
while parking or traveling at low speeds, the system will opera te to
lessen the impact with the detected static object and reduce th e
resulting damage.
Examples of function operation

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4-5. Using the driving support systems
Driving
■When the accelerator pedal is depressed excessively
■When the vehicle moves in the unintended direction due to the
wrong shift position being selected
 P. 2 5 3
Types of sensors
WARNING
■To ensure the system can oper- ate properly
 P. 2 5 4
■If the Parking Support Brake function (static objects) oper-
ates unnecessarily, such as at a railroad crossing
 P. 2 6 8
■Notes when washing the vehicle
 P. 2 5 5

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4-5. Using the driving support systems
■The Parking Support Brake func- tion (static object) will operate
when
The function will operate when the PKSB OFF indicator is not illuminated or
flashing ( P.91, 92) and all of the fol- lowing conditions are met:
●Hybrid system output restriction con-trol• The Parking Support Brake is
enabled. • The vehicle speed is approximately 15 km/h (9 mph) or less.
• There is a static object in the traveling direction of the vehicle and approxi-mately 2 to 4 m (6 to 13 ft.) away.
• The Parking Support Brake deter- mines that a stronger-than-normal brake operation is necessary to avoid
a collision.
●Brake control
• Hybrid system output restriction con- trol is operating.• The Parking Support Brake deter-
mines that an immediate brake opera- tion is necessary to avoid a collision.
■The Parking Support Brake func-tion (static objects) will stop oper-
ating when
The function will stop operating if any of the following conditions are met:
●Hybrid system output restriction con-
trol • The Parking Support Brake is dis-abled.
• The system determines that the colli- sion has become avoidable with nor-mal brake operation.
• The static object is no longer approxi- mately 2 to 4 m (6 to 13 ft.) away from the vehicle or in the traveling direction
of the vehicle.
●Brake control
• The Parking Support Brake is dis- abled.• Approximately 2 seconds have
elapsed since the vehicle was stopped by brake control.• The brake pedal is depressed after
the vehicle is stopped by brake con-
trol. • The static object is no longer approxi-mately 2 to 4 m (6 to 13 ft.) away from
the vehicle or in the traveling direction of the vehicle.
■Re-enabling the Parking Support Brake function (static objects)
 P. 2 6 9
■Detection range of the Parking Sup- port Brake function (static objects)
The detection range of the Parking Sup-
port Brake function (static objects) dif- fers from the detection range of the Toyota parking assist-sensor. ( P.258)
Therefore, even if the Toyota parking assist-sensor detects an object and pro-vides a warning, the Parking Support
Brake function (static objects) may not start operating.
■Objects which the system may not be properly detected
 P. 2 5 6
■Toyota parking assist-sensor buzzer
Regardless of whether the Toyota park-
ing assist-sensor buzzer is enabled or not ( P.254), if the Parking Support Brake function (static objects) is enabled
( P.266), the front or rear sensors detect an object and brake control is performed, the Toyota parking assist-
sensor buzzer will sound to notify the driver of the approximate distance to the object.
■Situations in which the system may
not operate properly
 P. 2 5 6
■Situations in which the system may operate even if there is no possibil-
ity of a collision
 P. 2 5 7

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4-5. Using the driving support systems
Driving
*: If equipped
This function will operate in situations such as the following if a vehicle is
detected in the traveling direction of the vehicle.
■When reversing, a vehicle is approaching and the brake pedal is not
depressed, or is depressed late
 P. 2 4 9
■The Parking Support Brake func- tion (rear-crossing vehicles) will
operate when
The function will operate when the PKSB OFF indicator is not illuminated or
flashing ( P.91, 92) and all of the fol- lowing conditions are met:
●Hybrid system output restriction con-trol• The Parking Support Brake is
Parking Support Brake function (rear-crossing vehi-
cles)*
If a rear radar sensor detects a vehicle approaching from the r ight
or left at the rear of the vehicle and the system determines th at the
possibility of a collision is h igh, this function will perform brake
control to reduce the likelihood of an impact with the approach ing
vehicle.
Examples of function operation
Types of sensors
WARNING
■To ensure the system can oper- ate properly
 P. 2 6 0

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4-5. Using the driving support systems
Driving
■ECB (Electronically Con-
trolled Brake System)
The electronically controlled sys-
tem generates braking force corre-
sponding to the brake operation
■ABS (Anti-lock Brake System)
Helps to prevent wheel lock when
the brakes are applied suddenly, or
if the brakes are applied while driv-
ing on a slippery road surface
■Brake assist
Generates an increased level of
braking force after the brake pedal
is depressed when the system
detects a panic stop situation
■VSC (Vehicle Stability Control)
Helps the driver to control skidding
when swerving suddenly or turning
on slippery road surfaces.
■VSC+ (Vehicle Stability Con-
trol+)
Provides cooperative control of the
ABS, TRC, VSC and EPS.
Helps to maintain directional stabil-
ity when swerving on slippery road
surfaces by controlling steering per-
formance.
■TRC (Traction Control)
Helps to maintain drive power and
prevent the drive wheels from spin-
ning when starting the vehicle or
accelerating on slippery roads
■Active Cornering Assist (ACA)
Helps to prevent the vehicle from
drifting to the outer side by perform-
ing inner wheel brake control when
attempting to accelerate while turn-
ing
■Hill-start assist control
Helps to reduce the backward
movement of the vehicle when
starting on an uphill
■EPS (Electric Power Steering)
Employs an electric motor to
reduce the amount of effort needed
to turn the steering wheel.
■Emergency brake signal
When the brakes are applied sud-
denly, the emergency flashers auto-
matically flash to alert the vehicle
behind.
■Secondary Collision Brake
When the SRS airbag sensor
detects a collision and the system
operates, the brakes and brake
Driving assist systems
To keep driving safety and per-
formance, the f ollowing sys-
tems operate automatically in
response to various driving sit-
uations. Be aware, however,
that these systems are supple-
mentary and should not be
relied upon too heavily when
operating the vehicle.
Summary of the driving
assist systems