2022 TOYOTA BZ4X brake sensor

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5-4. Using the driving support systems
Driving
■Dynamic radar cruise control sys-
tem warning messages and buzz- ers
For safe use: P. 2 7 5
■Preceding vehicles that the sensor
may not detect correctly
In the following situations, depending on the conditions, if the system cannot pro-
vide sufficient deceleration or accelera- tion is necessary, operate the brake pedal or accelerator pedal.
As the sensor may not be able to cor- rectly detect these types of vehicles, the approach warning ( P.313) may not
operate.
●When a vehicle cuts in front of your
vehicle or changes lanes away from your vehicle extremely slowly or quickly
●When changing lanes
●When a preceding vehicle is driving at a low speed
●When a vehicle is stopped in the same lane as the vehicle
●When a motorcycle is traveling in the same lane as the vehicle
■Conditions under which the system may not operate correctly
In the following situations, operate the brake pedal (or accelerator pedal, depending on the situation) as neces-
sary.
As the sensor may not be able to cor- rectly detect a vehicle, the system may
not operate properly.
●When a preceding vehicle brakes sud-
denly
●When changing lanes at low speeds,
such as in a traffic jam
In situations where the vehicle
approaches a preceding vehicle
and the system cannot provide suf-
ficient deceleration, such as if a
vehicle cuts in front of the vehicle, a
warning display will flash and a
buzzer will sound to alert the driver.
Depress the brake pedal to ensure
appropriate vehicle-to-vehicle dis-
tance.
■Warnings may not occur when
In the following situations, the
warning may not operate even
though the vehicle-to-vehicle dis-
tance is short.
 When the preceding vehicle is
traveling at the same speed or
faster than your vehicle
 When the preceding vehicle is
traveling at an extremely low
speed
 Immediately after the vehicle
speed has been set
 When the accelerator pedal is
depressed
When a curve is detected, the vehi-
cle speed will begin being reduced.
When the curve ends, the vehicle
speed reduction will end.
Depending on the situation, the vehicle
speed will then return to the set vehicle
speed.
In situations where vehicle-to-vehicle
distance control needs to operate, such
as when a preceding vehicle cuts in
front of your vehicle, the curve speed
reduction function will be canceled.
Approach warning
Curve speed reduction func-
tion

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5-4. Using the driving support systems
1Press the cancel switch or driv-
ing assist switch to cancel con-
trol.
Control will also be canceled if the brake pedal is depressed.
2 Press the “RES” switch to
resume control.
■Automatic cancelation of the cruise
control
In the following situations, the cruise control will be canceled automatically:
●When the vehicle speed drops approximately 16 km/h (10 mph) or
more below the set vehicle speed
●When the vehicle speed drops below
approximately 30 km/h (20 mph)
●When the brake control or output
restriction control of a driving support system operates (For example: PCS, drive-start control)
●When the parking brake has been operated
●Situations in which some or all of the functions of the system cannot oper-
ate: P. 2 8 1
*: If equipped
■Meter display
Set vehicle speed
Speed limiter indicator
Speed limiter*
A desired maximum speed can
be set using the speed limiter
switch. The speed limiter pre-
vents the vehicle speed from
exceeding the set speed.
WARNING
■Situations in which speed limiter should not be used
●Situations in which the sensors may
not operate properly: P.279
●When it is necessary to disable the
system: P.275
System Components

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5-4. Using the driving support systems
Driving
■The system can be operated when
●The power switch is in ON.
●Toyota parking assist-sensor function is on.
●The vehicle speed is less than about 10 km/h (6 mph).
●A shift position other than P is selected.
■Sensor detection information
●The sensor’s detection areas are lim-ited to the areas around the vehicle’s
front and rear bumpers.
●The following situations may occur
during use. • Depending on the shape of the object and other factors, the detection dis-
tance may shorten, or detection may be impossible.• Detection may be impossible if static
objects draw too close to the sensor. • There will be a short delay between static object detection and display
(warning buzzer sounds). Even at low speeds, there is a possibility that the object will come within 30 cm before
the display is shown and the warning buzzer sounds.• It might be difficult to hear the buzzer
due to the volume of the audio system or air flow noise of the air conditioning system.
• It may be difficult to hear the sound of this system due to the buzzers of other systems.
■Objects which the system may not
be properly detected
The shape of the object may prevent the sensor from detecting it. Pay particular
attention to the following objects:
●Wires, fences, ropes, etc.
●Cotton, snow and other materials that
absorb sound waves
●Sharply-angled objects
●Low objects
●Tall objects with upper sections pro- jecting outwards in the direction of your vehicle
People may not be detected if they are wearing certain types of clothing.
■Situations in which the system may not operate properly
Certain vehicle conditions and the sur- rounding environment may affect the ability of a sensor to correctly detect
objects. Particular instances where this may occur are listed below.
●There is dirt, snow, water drops or ice on a sensor. (Cleaning the sensors will resolve this problem.)
●A sensor is frozen. (Thawing the area will resolve this problem.)
In especially cold weather, if a sensor is frozen the sensor display may be displayed abnormally, or objects, such
as a wall, may not be detected.
●When a sensor or the area around a
sensor is extremely hot or cold.
●On an extremely bumpy road, on an incline, on gravel, or on grass.
●When vehicle horns, vehicle detec-tors, motorcycle engines, air brakes of large vehicles, the clearance sonar of
other vehicles or other devices which produce ultrasonic waves are near the vehicle
●A sensor is coated with a sheet of spray or heavy rain.
●If objects draw too close to the sensor.
WARNING
●When using steam to clean the vehicle, do not direct steam too
close to the sensors as doing so may cause a sensor to malfunction.

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5-4. Using the driving support systems
●When a pedestrian is wearing clothing
that does not reflect ultrasonic waves (ex. skirts with gathers or frills).
●When objects that are not perpendicu-lar to the ground, not perpendicular to the vehicle traveling direction,
uneven, or waving are in the detection range.
●Strong wind is blowing
●When driving in inclement weather
such as fog, snow or a sandstorm
●When an object that cannot be
detected is between the vehicle and a detected object
●If an object such as a vehicle, motor-cycle, bicycle or pedestrian cuts in front of the vehicle or runs out from
the side of the vehicle
●If the orientation of a sensor has been
changed due to a collision or other impact
●When equipment that may obstruct a sensor is installed, such as a towing eyelet, bumper protector (an addi-
tional trim strip, etc.), bicycle carrier, or snow plow
●If the front of the vehicle is raised or lowered due to the carried load
●If the vehicle cannot be driven in a stable manner, such as when the vehicle has been in an accident or is
malfunctioning
●When a tire chains, compact spare tire
or an emergency tire puncture repair kit is used
■Situations in which the system may operate even if there is no possibil-
ity of a collision
In some situations, such as the follow- ing, the system may operate even
though there is no possibility of a colli- sion.
●When driving on a narrow road
●When driving toward a banner, flag,
low-hanging branch or boom barrier (such as those used at railroad cross-ings, toll gates and parking lots)
●When there is a rut or hole in the sur-face of the road
●When driving on a metal cover (grat-ing), 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 driving 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 sandstorm
●When strong winds are blowing
●When vehicle horns, vehicle detec-tors, 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 carried load

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5-4. Using the driving support systems
Driving
■Static Objects Around the
Vehicle (vehicles with
Advanced Park)
 P. 3 6 3
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
●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
■Precautions for the suspension
Do not modify the suspension of the vehicle. If the height or tilt of the vehi-cle is changed, the sensors may not
be able to detect detectable objects and the system may not operate cor-rectly, possibly leading to an accident.

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5-4. Using the driving support systems
EV system output
Braking force
Time
EV system output restriction
control begins operating (Sys-
tem determines that possibility
of collision with detected object
is high)
Brake control begins operating
(System determines that possi-
bility of collision with detected
object is extremely high)
■If the Parking Support Brake has operated
If the vehicle is stopped due to operation of the Parking Support Brake, the Park-ing Support Brake will be disabled and
the driving assist information indicator will illuminate. If the Parking Support Brake operates unnecessarily, brake
control can be canceled by depressing the brake pedal or waiting for approxi-mately 2 seconds for it to automatically
be canceled. Then, the vehicle can be operated by depressing the accelerator pedal.
■Re-enabling the Parking Support
Brake
To re-enable the Parking Support Brake when it has been disabled due to opera-
tion of the Parking Support Brake, either
enable the system again ( P.354), or turn the power switch off and then back to ON.
Additionally, if any of the following condi- tions are met, the system will be re-enabled automatically and the driving
assist information indicator will turn off:
●The P shift position is selected
●The object is no longer detected in the traveling direction of the vehicle
●The traveling direction of the vehicle
changes*
*: Except when the Pedestrian Rear of
the Vehicle operated.
■Toyota parking assist-sensor
buzzer
Regardless of whether the Toyota park- ing assist-sensor buzzer is enabled or
not, if the PKSB (Parking Support Brake) system is enabled, the front or rear sensors detect a static 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.
■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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5-4. Using the driving support systems
Driving
*: If equipped
This function will operate in situa-
tions 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
■When the accelerator pedal is
depressed excessively
Static Objects Front and
Rear of the Vehicle*
If the sensors detect a static
object, such as a wall, in the
traveling direction of the vehi-
cle and the system determines
that a collision may occur due
to the vehicle suddenly mov-
ing forward due to an acciden-
tal 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 operate to lessen
the impact with the detected
static object and reduce the
resulting damage.
Examples of function opera-
tion

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5-4. Using the driving support systems
■When the vehicle moves in the
unintended direction due to
the wrong shift position being
selected
 P. 3 3 3
■The system will operate when
The function will operate when the driv-
ing assist information indicator is not illu- minated ( P.169, 519) and all of the following conditions are met:
●EV system output restriction control• 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• EV system output restriction control is operating.
• The Parking Support Brake deter- mines that an immediate brake opera-tion is necessary to avoid a collision.
■The system will stop operating
when
The function will stop operating if any of the following conditions are met:
●EV system output restriction control• 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.
■Detection range
The detection range of the system dif- fers from the detection range of the
Toyota parking assist-sensor. ( P.337)
Therefore, even if the Toyota parking assist-sensor detects a static and pro-
vides a warning, the PKSB (Parking Support Brake) system may not start
Types of sensors
WARNING
■To ensure the system can oper-
ate properly
 P. 3 3 4
■If the PKSB (Parking Support Brake) system operates unnec-essarily, such as at a railroad
crossing
 P. 3 5 6
■Notes when washing the vehicle
 P. 3 3 4