sensor LEXUS NX300 2020 Service Manual

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4
Driving
enabled/disabled on the multi-informa-
tion display as following:
1Press or of meter control
switches and select .
2 Press or of meter control
switches and select “PKSA”.
3 Press or of meter control
switches, select , and then press
to select the desired setting
(on/off).
When ON (enable) is selected, the
intuitive parking assist indicator comes
on.
When switched to OFF (disable) and
the intuitive parking assist is deacti-
vated, the system will not reactivate if it
is not switched to ON again from the screen of the multi-information dis-
play (Will not reactivate via engine
switch operations).
■The intuitive parking assist can be oper-
ated when
●The engine switch is in IGNITION ON
mode.
●Intuitive parking assist function is on.
●The vehicle speed is less than about 6 mph (10 km/h).
●A shift position other than P is selected.
■Setting the buzzer volume
The buzzer volume can be adjusted on the
multi-information display. ( P.235)
■Muting the buzzer sound
●To mute the buzzer sound
The buzzer can be temporarily muted by
pressing of the meter control
switches while an obstacle detection dis-
play is shown on the multi-information
display.
●To cancel the mute
Mute will be automatically canceled in
the following situations.
• When the shift position is changed
• When the vehicle speed has reached or
exceeded approximately 6 mph (10
km/h) with the shift lever in D
• When the intuitive par king assist is turned
off once and turned on again
• When the engine switch is turned off
once and turned to IGNITION ON
mode again
• When a sensor is malfunctioning
■Intuitive parking assist display
When an obstacle is detected while the
intuitive parking assist monitor is in use, the
warning indicator will appear in the upper
corner of the screen even if the display set-
ting has been set to off.
■If “Parking Assist Unavailable” or “Park-
ing Assist Unavailable Clean Parking
Assist Sensor” is displayed on the multi-
information display
A sensor may be dirty or covered with snow
or ice. In such cases, if it is removed from
the sensor, the system should return to nor-
mal.
Also, due to the sensor being frozen at low
temperatures, a malfunction display may
appear or an obstacle may not be detected.
If the sensor thaws out, the system should
return to normal.

2384-5. Using the driving support systems
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■If “Parking Assist Malfunction Visit Your
Dealer” is displayed on the multi-infor-
mation display
Depending on the malfunction of the sen-
sor, the device may not be working nor-
mally. Have the vehicle inspected by your
Lexus dealer.
■Sensor detectio n information
●The sensor’s detection areas are limited
to the areas around the vehicle’s bumper.
●Certain vehicle conditions and the sur-
rounding environment may affect the
ability of a sensor to correctly detect an
obstacle. Particular instances where this
may occur are listed below.
• There is dirt, snow or ice on the sensor.
(Wiping the sensors will resolve this
problem.)
• The sensor is frozen. (Thawing the area
will resolve this problem.)
In especially cold weather, if a sensor is
frozen the screen may show an abnormal
display, or obstacles may not be
detected.
• The sensor is covered in any way.
• The vehicle is leaning considerably to one
side.
• On an extremely bumpy road, on an
incline, on gravel, or on grass.
• The vicinity of the vehicle is noisy due to vehicle horns, motorcycle engines, air
brakes of large vehicles, or other loud
noises producing ultrasonic waves.
• There is another vehicle equipped with
parking assist sensors in the vicinity.
• The sensor is coated with a sheet of spray or heavy rain.
• The vehicle is equipped with a fender pole or wireless antenna.
• Towing eyelets are installed.
• The bumper or sensor receives a strong
impact.
• A backlit license plate, license plate
holder, etc., are installed.
• The vehicle is approaching a tall or curved curb.
• In harsh sunlight or intense cold weather.
• The area directly under the bumpers is
not detected.
• If obstacles draw too close to the sensor.
• A non-genuine Lexus suspension (low- ered suspension, etc.) is installed. • People may not be detected if they are
wearing certain types of clothing.
In addition to the examples above, there are
instances in which, be cause of their shape,
signs and other objects may be judged by a
sensor to be closer than they are.
●The shape of the obstacle may prevent a
sensor from detecting it. Pay particular
attention to the following obstacles:
• Wires, fences, ropes, etc.
• Cotton, snow and other materials that absorb sound waves
• Sharply-angled objects
• Low obstacles
• Tall obstacles with upper sections pro- jecting outwards in the direction of your
vehicle
●The following situations may occur
during use.
• Depending on the shape of the obstacle and other factors, the detection distance
may shorten, or detection may be impos-
sible.
• Obstacles may not be detected if they are too close to the sensor.
• There will be a short delay between obstacle detection and display. Even at
slow speeds, there is a possibility that the
obstacle will come within the sensor’s
detection areas befo re the display is
shown and the buzzer sounds.
• Thin posts or object s lower than the sen-
sor may not be detected when
approached, even if they have been
detected once.
• It might be difficult to hear beeps due to the volume of audio system or air flow
noise of the air conditioning system.
■Customization
Some functions can be customized.
(Customizable features: P.427)

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Driving
■Detection range of the sensors
Approximately 3.3 ft. (100 cm)
Approximately 4.9 ft. (150 cm)
Approximately 1.9 ft. (65 cm)
The diagram shows the detection range of
the sensors. Note that the sensors cannot
detect obstacles that are extremely close
to the vehicle.
The range of the sensors may change
depending on the shape of the object, etc.
■Distance display
Sensors that detect an obstacle will illu-
minate continuously or blink.
WARNING
■When using the intuitive parking
assist
Observe the following precautions.
Failure to do so may result in the vehicle
being unable to be driven safely and pos-
sibly cause an accident.
●Do not use the sensor at speeds in
excess of 6 mph (10 km/h).
●The sensors’ detection areas and reac-
tion times are limited. When moving
forward or reversing, check the areas
surrounding the vehicle (especially the
sides of the vehicle) for safety, and
drive slowly, using the brake to control
the vehicle’s speed.
●Do not install accessories within the
sensors’ detection areas.
NOTICE
■When using intuitive parking assist
In the following situations, the system
may not function correctly due to a sen-
sor malfunction, etc. Have the vehicle
checked by your Lexus dealer.
●The intuitive parking assist operation
display flashes, and a buzzer sounds
when no obstacles are detected.
●If the area around a sensor collides
with something, or is subjected to
strong impact.
●If the bumper collides with something.
●If the display shows continuously with-
out beeping, except when the buzzer
mute switch has been turned on.
●If a display error occurs, first check the
sensor.
If the error occurs even if there is no
ice, snow or mud on the sensor, it is
likely that the sensor is malfunctioning.
■Notes when washing the vehicle
Do not apply intensive bursts of water or
steam to the sensor area.
Doing so may result in the sensor mal-
functioning.
Sensor detection display, obsta-
cle distance
A
B
C

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*1: The images may differ from that shown
in the illustrations. ( P.236)
*2: Automatic buzzer mute function is
enabled. ( P.240)
*3: The distance segments will blink slowly.
■Buzzer operation and distance to
an obstacle
A buzzer sounds when the sensors are
operating.
 The buzzer sounds faster as the
vehicle approaches an obstacle.
When the vehicle comes within the approximately 1.2 ft. (35 cm) of the
obstacle, the buzze
r sounds contin-
uously.
 When 2 or more obstacles are
detected simultaneously, the buzzer
system responds to the nearest
obstacle. If one or both come within
the above distances, the beep will
repeat a long tone, followed by fast
beeps.
 Automatic buzzer mute function:
After a buzzer begins sounding, if
the distance between the vehicle
and the detected object does not
become shorter, the buzzer will be
muted automatically. (However, if
the distance between the vehicle
and object is 1.0 ft. (30 cm) or less,
this function will not operate.)
Approximate distance to
obstacleDisplay*1
Rear center sensor: 4.9 ft. (150 cm) to 1.9 ft. (65
cm)
*2
Front center sensor: 3.3 ft. (100 cm) to 1.9 ft. (65
cm)
*2
1.9 ft. (65 cm) to 1.5 ft. (45 cm)
*2
1.5 ft. (45 cm) to 1.0 ft.
(30 cm)
*2
1.0 ft. (30 cm) to 0.5 ft. (15 cm)
*3
Less than 0.5 ft. (15 cm)*3

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Driving
*:If equipped
The system operates in the following
situations when a static object is
detected in the traveling direction of
the vehicle.
■The vehicle is driven at low speeds
and the brake pedal is not
depressed, or is depressed too late
■The accelerator pedal is depressed
too far
Parking Support Brake func-
tion (for static objects)*
When a collision may occur with a
static object while parking or trav-
eling at low speeds, when the vehi-
cle suddenly moves forward due to
mistaken accelerator pedal opera-
tion, or when the vehicle moves due
to the shift lever being in the wrong
position, the sensors detect static
objects to the front or rear in the
traveling direction of the vehicle,
and the system operates to lessen
impact with static objects such as
walls, and reduce resulting dam-
age.
Examples of system operation

2424-5. Using the driving support systems
LEXUS NX300 Owners Manual_USA_M78389_en
■When the shift lever is mistakenly
in D and the vehicle moves forward
■Sensor positions and types
Front corner sensors
Front center sensors
Rear corner sensors
Rear center sensors
This system can be enabled/disabled
on the multi-information display.
WARNING
■For safe use
Do not rely solely upon the system. Rely-
ing solely upon the sy stem may lead to an
unexpected accident.
●Driving safely is the sole responsibility
of the driver. Pay careful attention to
the surrounding conditions in order to
ensure safe driving. The Parking Sup-
port Brake function (f or static objects)
can provide support to lessen the
severity of collisions. However, it may
not operate depending on the situa-
tion.
●The Parking Support Brake function
(for static objects) is not a system
designed to completely stop the vehi-
cle. Furthermore, even if the Parking
Support Brake function (for static
objects) is able to stop the vehicle,
brake control is canceled after
approximately 2 seco nds, so depress
the brake pedal immediately.
Sensor positions and types
NOTICE
■Preventing sensor malfunctions
●If the area around a sensor is subjected
to an impact, equipment may not oper-
ate properly due to a sensor malfunc-
tion. Have the vehicle inspected by
your Lexus dealer.
●When using a high-pressure washer to
wash the vehicle, do not spray water
directly on the sensors. The sensors
may not function properly if subjected
to an impact from strong water pres-
sure.
●When using steam to wash the vehicle,
do not direct steam too close to the
sensors. The sensors may not function
properly if subjected to steam.
Changing settings of the Park-
ing Support Brake function (for
static objects)
A
B
C
D

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Driving
ON
OFF
Control starts
Collision is likely
DOWN
Collision possibility is very high
UP
“BRAKE!” is displayed in the multi-information display
“Switch to Brake” is displayed in the multi-information display
■Operation starting conditions
When the PKSB OFF indicator is not illumi-
nated or flashing ( P.242, 378) and all of
the following conditions are met, the system
operates.
●Engine output restriction control
• The Parking Support Brake function (for static objects) is on.
• The vehicle speed is 10 mph (15 km/h) or
less.
• There is a static ob ject in the traveling
direction of the vehicle (6 to 13 ft. [2 to 4
m] ahead).
• The system determined that a stronger than-normal brake operation was neces-
sary to avoid a collision.
●Brake control
•Engine output restrict ion control is being
performed.
• The system determined that an emer- gency brake operation was necessary to
avoid a collision.
■Operation ending conditions
In any of the following situations, the system
stops operating.
●Engine output restriction control
• The Parking Support Brake function (for static objects) ha s been turned off
(stopped).
• The collision became avoidable with nor- mal brake operation.
• The static object is no longer in the travel-
ing direction of the vehicle (6 to 13 ft. [2 to 4 m] ahead).
●Brake control
• The Parking Support Brake function (for static objects) has been turned off
(stopped).
• Approximately 2 seconds elapsed after the vehicle was stopped by brake control.
• The brake pedal was depressed after the
vehicle was stopped by brake control.
• The static object is no longer in the travel- ing direction of the vehicle (6 to 13 ft. [2
to 4 m] ahead).
■Sensor detection range
The detection range of the Parking Support
Brake function (for static objects) differs
from the detection range of the clearance
sonar ( P.239).
Therefore, even if the clearance sonar
detects a static object and provides a warn-
ing, the Parking Support Brake function (for
static objects) may not start operating.
■Static objects not detected by the sen-
sors
The following static objects may not be
detected by the sensors.
●Objects 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.)
●Objects not perpendicular with the
ground, objects not at a right angle to the
traveling direction of the vehicle, uneven
E
F
G
H
I
J
K
L
M

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objects or waving objects
●Low objects
●Thin objects such as wires, fences, ropes
and signposts
●Objects that are extremely close to the
bumper
■Situations in which the Parking Support
Brake function (for static objects) may
not operate
When driving with the shift lever in N
■Situations when the system may operate
even though there is no possibility of a
collision
In the following situations, the system may
operate even though there is no possibility
of a collision.
●Environmental influence
• The vehicle is driven on a narrow road
• The vehicle is driven on a gravel road or in an area with tall grass
• The vehicle is driven toward a banner or flag, a low-hanging branch or a boom
barrier (such as those used at railroad
crossings, toll gates and parking lots).
• There is a static obje ct on the shoulder of
the road (when the vehicle is driven in a
narrow tunnel, on a narrow bridge or on a
narrow road)
• The vehicle is being parallel parked
• There is a rut or hole in the surface of the road • When the vehicle is driven on a metal
cover (grating), such as those used for
drainage ditches
• The vehicle is driven on a steep slope
• The sensor is covered by water on a flooded road
●Influence from the weather
• Ice, snow, dirt, etc., has adhered to the
sensor (if removed, the system returns to
normal)
• Heavy rain or water strikes the vehicle
• In severe weather such as fog, snow or a
sand storm
●Influence from other sonic waves
• An ultrasonic wave source is nearby, such as the horn or clearance sonar of another
vehicle, a vehicle detector, a motorcycle
engine or the air brake of a large vehicle
• Electronic components (such as a backlit
license plate (especially fluorescent
types), fog lights, a fe nder pole or a wire-
less antenna) are installed near the sen-
sors
●Changes in the vehicle
• The vehicle is tilted a large amount
• The height of the vehicle has drastically changed due to the carried load (the
nose tilts up or down)
• The direction of the sensor has deviated due to a collision or other impact
■Situations in which the system may not
operate normally
In the following situations, the system may
not operate normally.
●Environmental influence
• There is a static object that cannot be detected between the vehicle and
another static object that can be
detected
• A static object such as another vehicle, a motorcycle, a bicycle or a pedestrian cuts
in front of the vehicle or jumps out from
the side.
●Influence from the weather
• The area around the sensor is extremely hot or cold

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• The vehicle is driven on a gravel road or
in an area with tall grass
• Ice, snow, dirt, etc., has adhered to the sensor (if removed, the system returns to
normal)
• Heavy rain or water strikes the vehicle
• In severe weather such as fog, snow or a sand storm
●Influence from other sonic waves
• An ultrasonic wave source is nearby, such
as the horn or clearance sonar of another
vehicle, a vehicle detector, a motorcycle
engine or the air brake of a large vehicle
• Electronic components (such as a backlit license plate (especially fluorescent
types), fog lights, a fender pole or a wire-
less antenna) are installed near the sen-
sors
●Changes in the vehicle
• The vehicle is tilted a large amount
• The height of the vehicle has drastically changed due to the carried load (the
nose tilts up or down)
• The direction of the sensor has deviated
due to a collision or other impact
■When “Parking Support Brake Unavail-
able” is displayed on the multi-informa-
tion display and the PKSB OFF indicator
flashes
●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 dis-
played at low temperatures due to ice
forming on the sensor, and the sensor
may not detect static objects. Once the
ice melts, the system will return to normal.
●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 inspected by your
Lexus dealer.
●System initialization may not have been
performed after remova l and installation
of the battery. Perform system initializa-
tion.
■When removing and installing the bat-
tery
The system needs to be initialized.
The system can be initialized by driving the
vehicle straight ahead for 5 seconds or
more at a speed of approximately 22 mph
(35 km/h) or higher.
■When “Parking Support Brake Mal-
function Visit Your Dealer” is displayed
on the multi-information display, the
PKSB OFF indicator flashes and the
buzzer sounds
The system may not be operating properly.
Have the vehicle inspected by your Lexus
dealer.
WARNING
■In order for the system to operate
properly
Make sure to observe the following pre-
cautions regarding the sensors
(  P.239). Failure to observe these pre-
cautions may cause the sensors not to
operate properly, and may result in an
unexpected accident.
●Do not perform work such as modifi-
cation, disassembly or painting
●Only perform replacements using
genuine parts
●Do not subject the area around the
sensors to any impacts

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When the engine output restriction
control or brake control operates, the
buzzer sounds and a message is dis-
played on the multi-information dis- play, head-up display and
navigation/multimedia system screen
to alert the driver.
Depending on the situation, output restric-
tion control operates to either limit accel-
eration or restrict output as much as
possible.
■Engine output restriction control is
operating (acceleration limitation
control)
■Engine output restriction control is
operating (control to restrict out-
put as much as possible)
WARNING
●Do not damage the sensors, and
always keep them clean
■Handling the suspension
Do not modify the suspension, as
changes to the height or incline of the
vehicle may prevent the sensors from
correctly detecting static objects, may
cause the system not operate, or may
cause the system to operate unnecessar-
ily.
NOTICE
■Preventing unnecessary operation
In the following situations, turn the Park-
ing Support Brake func tion (for static
objects) OFF. The system may operate
even though there is no possibility of a
collision.
●A chassis roller, chassis dynamo, free
roller or similar equipment is being
used for an inspection, etc.
●The vehicle is being loaded onto a ship,
truck or other transport vessel
●The suspension has been lowered or
tires that have a different size than the
genuine tires are equipped
●The height of the vehicle has drastically
changed due to the carried load (the
nose tilts up or down).
●A towing hook is installed
●When using an automatic car wash
Display and buzzer for engine
output restriction control and
brake control
Situation
Acceleration at a certain
speed or higher is not possible.
Multi-informa-tion dis-
play/Head-up display
“Object Detected Accel- eration Reduced”
Naviga-
tion/multime- dia system screen

PKSB OFF IndicatorNot illuminated
Buzzer
Situation
A stronger than normal
brake operation is neces- sary
Multi-informa-tion dis-
play/Head-up display
“BRAKE!”Naviga-
tion/multime- dia system screen