2023 TOYOTA BZ4X sensor

2605-4. Using the driving support systems
Owners Manual_USA_M42C01_en
■AHB (Automatic High
Beam)
 P.250
■PCS (Pre-Collision System)
 P.265
■LTA (Lane Tracing Assist)
 P.276
■LDA (Lane Departure Alert)
 P.281
■RSA (Road Sign Assist)
 P.286
■Dynamic radar cruise con-
trol
 P.288
■Emergency Driving Stop
System
 P.299
Various sensors are used to
obtain the necessary informa-
tion for system operation.
■Sensors which detect the
surrounding conditions
Front
Front radar sensor
Front camera
Rear (rear side radar sensors)
WARNING
●When a sensor is misaligned or
deformed due to a strong
impact being applied to the sen-
sor or the area around the sen-
sor
●When accessories which
obstruct a sensor or light are
temporarily installed to the vehi-
cle
●When a compact spare tire or
tire chains are installed to the
vehicle or an emergency tire
puncture repair kit has been
used
●When the tires are excessively
worn or the inflation pressure of
the tires is low
●When tires other than the manu-
facturer specified size are
installed
●When the vehicle cannot be
driven stably, due to a collision,
malfunction, etc.
Driving assist systems
Sensors used by Toyota
Safety Sense 3.0

2615-4. Using the driving support systems
Owners Manual_USA_M42C01_en
5
Driving
WARNING
■To prevent malfunction of the
radar sensors
Observe the following precau-
tions. Failure to do so may lead to
a radar sensor not operating prop-
erly, possibly leading to an acci-
dent resulting in death or serious
injury.
●Keep the radar sensors and
radar sensor covers clean at all
times.
Clean the front of a radar sensor
or the front or back of a radar sen-
sor cover if it is dirty or covered
with water drople ts, snow, etc.
When cleaning the radar sensor
and radar sensor cover, use a soft
cloth to remove di rt so as to not
damage them.
Radar sensor
Radar sensor cover
●Do not attach accessories,
stickers (including transparent
stickers), aluminum tape, etc. to
a radar sensor or radar sensor
cover and their surrounding
area.
●Do not subject a radar sensor or
its surrounding area to impact. If
a radar sensor, the front grille,
or front bumper has been sub-
jected to a impact, have the
vehicle inspected by your Toy-
ota dealer.
●Do not disassemble the radar
sensors.
●Do not modify or paint the radar
sensors or radar sensor cover,
or replace them with anything
other than Toyota genuine parts.
●In the following situations, recal-
ibration of the radar sensors will
be necessary. For details, con-
tact by your Toyota dealer.
• When a radar sensor is removed and installed, or
replaced
• When the front bumper or the front grille has been replaced
■Radar sensor cover with a
heater
When the system determines that
snow may pile up over the radar
sensor cover, the heater will oper-
ate automatically. If the area
around the radar sensor cover is
to be touched, such as during
cleaning, make sure that the radar
sensor cover is cool enough to
prevent burns.
■To prevent malfunction of the
front camera
Observe the following precau-
tions. Failure to do so may lead to
the front camera not operating
properly, possibly leading to an
accident resulting in death or seri-
ous injury.

2635-4. Using the driving support systems
Owners Manual_USA_M42C01_en
5
Driving
■Situations in which the sensors
may not operate properly
●When the height or inclination of
the vehicle has been changed due
to modifications
●When the windshield is dirty,
fogged up, cracked or damaged
●When the ambient temperature is
high or low
●When mud, water, snow, dead
insects, foreign matter, etc., is
attached to the fr ont of the sensor
●When in inclement weather such
as heavy rain, fog, snow, or a
sandstorm
●When water, snow, dust, etc. is
thrown up in front of the vehicle, or
when driving through mist or
smoke
●When the headlig hts are not illu-
minated while driving in the dark,
such as at night o r when in a tun-
nel
●When the lens of a headlight is
dirty and illumination is weak
●When the headlights are mis-
aligned
●When a headlight is malfunction-
ing
●When a the headlights of another vehicle, sunlight, or reflected light
shines directly into the front cam-
era
●When the brightness of the sur-
rounding area changes suddenly
●When driving near a TV tower,
broadcasting station, electric
power plant, radar equipped vehi-
cles, etc., or other location where
strong radio waves or electrical
noise may be present
●When a wiper blade is blocking
the front camera
●When in a location or near objects
which strongly reflect radio waves,
such as the following:
• Tunnels
• Truss bridges
• Gravel roads
• Rutted, snow-covered roads
• Walls
• Large trucks
• Manhole covers
• Guardrail
• Metal plates
●When near a step or protrusion
●When a detectable vehicle is nar-
row, such as a small mobility vehi-
cle
●When a detectable vehicle has a
small front or rear end, such as an
unloaded truck
●When a detectable vehicle has a
low front or rear end, such as a
low bed trailer
●When a detectable vehicle has
extremely high ground clearance
WARNING
●Do not modify or change the
headlights and other lights.
■Front camera installation area
on the windshield
If the system determines that the
windshield may be fogged up, it
will automatically operate the
heater to defog the part of the
windshield around the front cam-
era. When cleaning, etc., be care-
ful not to touch the area around
the front camera until the wind-
shield has cooled sufficiently, as
touching it may cause burns.

2655-4. Using the driving support systems
Owners Manual_USA_M42C01_en
5
Driving
response may cha nge, but this
does not indicate a malfunction.
●When the system is operating, the
brake pedal may feel stiffer than
expected or sink. In either situa-
tion the brake pedal can be
depressed further. Further
depress the brake pedal as nec-
essary.
■Certification
 P. 6 1 9
PCS (Pre-Collision Sys-
tem)
The pre-collision system
uses sensors to detect
objects ( P.266) in the path
of the vehicle. When the
system determines that the
possibility of a frontal colli-
sion with a detectable
object is high, a warning
operates to urge the driver
to take evasive action and
the potential brake pressure
is increased to help the
driver avoid the collision. If
the system determines that
the possibility of a collision
is extremely high, the
brakes are automatically
applied to help avoid the
collision or help reduce the
impact of the collision.
The pre-collision system can
be disabled/enabled and the
warning timing can be
changed. ( P.275)

2805-4. Using the driving support systems
Owners Manual_USA_M42C01_en
The operating state of the LTA system is indicated.
WARNING
●Situations in which the sensors
may not operate properly:
 P. 2 6 3
●Situations in which the lane may
not be detected: P. 2 6 4
●When it is necessary to disable
the system: P. 2 5 9
Operation display of steering wheel operation support
IndicatorLane dis-
playSteering iconSituation
WhiteGrayGrey
LTA is on standby
GreenGreenGreen
LTA is operating
Orange
FlashingOrange
FlashingGreen
The vehicle is departing the lane
toward the side which the lane dis-
play is flashing

2845-4. Using the driving support systems
Owners Manual_USA_M42C01_en
●When the system determines that
the driver is not securely holding
the steering wheel, or the steering
wheel is not being operated when
the steering assist operation of the
lane departure prevention function
is operating
The length of time that the warning
buzzer operates will become longer
as the frequency o f the steering
assist operating i ncreases. Even if
the system judges that the steering
wheel has been operated, the warn-
ing buzzer will sound for a certain
amount of time.
■Break suggestion function
If the vehicle is swaying, a message
will be displayed and a warning
buzzer will sound to u rge the driver
to take a break.
Depending on the condition of the
vehicle and road surface, the break
suggestion functi on may not oper-
ate.
 The LDA system can be
enabled/disabled through a
customize setting. ( P.572)
 The settings of the LDA can be changed through on the
customize settings. (
P.572)
Changing LDA settings
WARNING
■Situations in which the LDA
should not be used
In the following situations, disable
the LDA system. Failure to do so
may lead to an accident.
●When it is necessary to disable
the system: P.259
■Situations in which the sys-
tem may not ope rate properly
In the following situations, the
system may not operate properly
and the vehicle may depart from
its lane. Do not overly rely on
these functions. The driver is
solely responsible for paying
attention to their surroundings
and operating the steering wheel
as necessary to ensure safety.
●When the boundary between
the asphalt and grass, soil, etc.,
or structures, such as a curb,
guardrail, etc. is not clear or
straight
●When the vehicle is struck by a
crosswind or the turbulence of
other nearby vehicles
●Situations in which the lane may
not be detected:  P.264
●Situations in which the sensors
may not operate properly:
P.263
●Situations in which some or all
of the functions of the system
cannot operate: P.264

2865-4. Using the driving support systems
Owners Manual_USA_M42C01_en
When the front camera
detects a sign or information of a sign is available from the
navigation system (if
equipped), the sign will be
displayed on the display.
 Multiple signs can be dis-
played.
Depending on the specifications of
the vehicle, the number of dis-
played signs may be limited.
■Operating conditions of sign
display
Signs will be displayed when the fol-
lowing conditions are met:
●The system has detected a sign
In the following si tuations, a dis-
played sign may stop being dis-
played:
●When a new sign has not been
detected for a certain distance
●When the system determines that
the road being driven on has
changed, such as after a left or
right turn
■Situations in which the display
function may not operate prop-
erly
In the following situ ations, the RSA
system may not operate properly
and may not detect signs or may
display the incorrect sign. However,
this does not indicate a malfunction.
●When a sign is dirty, faded, tilted
or bent
●When the contrast of an electronic
sign is low
●When all or part of a sign is hidden
by a tree, utility pole, etc.
●When a sign is d etected by the
front camera for a short amount of
time
●When the driving state (turning,
changing lanes, etc.) is judged
incorrectly
●When a sign is immediately after a
RSA (Road Sign
Assist)
The RSA system detects
specific road signs using
the front camera and/or
navigation system (if
equipped) (when speed limit
information is available)
and warns the driver via dis-
plays and buzzers.
WARNING
■For safe use
●Driving safely is solely the
responsibility of the driver. Pay
careful attention to the sur-
rounding conditions in order to
ensure safe driving.
●Do not rely solely upon the
RSA. The RSA assists the
driver by providing road sign
information, but it is not a
replacement for the driver’s own
vision and awareness. Driving
safely is solely the responsibility
of the driver. Pay careful atten-
tion to the surrounding condi-
tions in order to ensure safe
driving.
■Situations in which the RSA
should not be used
When it is necessary to disable
the system: P. 2 5 9
■Situations in which the sys-
tem may not operate properly
Situations in which the sensors
may not operate properly: P. 2 6 3
Display Function

2895-4. Using the driving support systems
Owners Manual_USA_M42C01_en
5
Driving
WARNING
●Set the speed appropriately
according to the speed limit,
traffic flow, road conditions,
weather conditions, etc. The
driver is responsible for confirm-
ing the set speed.
●Even if the system is operating
correctly, the condition of a pre-
ceding vehicle as recognized by
the driver and detected by the
system may differ. Therefore, it
is necessary for the driver to
pay attention, assess risks, and
ensure safety. Over-reliance on
this system to drive the vehicle
safely may lead to an accident
resulting in death or serious
injury.
■Precautions for the driving
assist systems
Observe the following precau-
tions, as there are limitations to
the assistance provided by the
system. Over-reliance on this sys-
tem may lead to an accident
resulting in death or serious injury.
●Details of support provided for
the driver’s vision The dynamic
radar cruise control is only
intended to help the driver in
determining the distance
between the driver’s own vehi-
cle and a designated preceding
vehicle. It is not a system which
allows for careless or inattentive
driving, and is not a system
which assists in poor visibility
conditions. The driver must pay
attention to their surroundings,
even when the vehicle stops.
●Details of suppor t provided for
the driver’s judgement The
dynamic radar cruise control
determines whether the dis-
tance between the driver’s own
vehicle and a designated pre-
ceding vehicle is within a set
range. It is not capable of mak-
ing any other type of judgement.
Therefore, it is absolutely nec-
essary for the driver to remain
vigilant and to determine
whether or not t here is a possi-
bility of danger.
●Details of suppor t provided for
the driver’s operation The
dynamic radar cruise control
does not include functions
which will prevent or avoid colli-
sions with vehicles ahead of
your vehicle. Ther efore, if there
is ever any possibility of danger,
the driver must take immediate
and direct control of the vehicle
and act appropriately in order to
ensure safety.
■Situations in which the
dynamic radar cruise control
should not be used
Do not use the d ynamic radar
cruise control in the following situ-
ations. As the system will not be
able to provide appropriate con-
trol, using it may lead to an acci-
dent resulting in death or serious
injury.
●Roads where there are pedes-
trians, cyclists, etc.
●When driving on a highway or
expressway entrance or exit
●When the approach warning
sounds frequently
●Situations in which the sensors
may not operate properly:
 P.263
●Situations in which the lane may
not be detected:  P.264