LEXUS NX300H 2019 Owners Manual

2314-5. Using the driving support systems
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Driving
than 1.0 ft. (30 cm), the distance seg-
ments may blink.)
*1: The images may differ from that shown in the illustrations. ( P.227)
*2: Automatic buzzer mute function is
enabled. ( P.231)
*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 1.0 ft. (30 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

2324-5. Using the driving support systems
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*:If equipped
The system operates in the following
situations when an obstacle 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
■When the shift lever is mistakenly
in D and the vehicle moves forward
Parking Support Brake func-
tion (for static objects)*
When a collision may occur with an
obstacle while parking or traveling
at low speeds, when the vehicle
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 obsta-
cles to the front or rear in the travel-
ing direction of the vehicle, and the
system operates to lessen impact
with obstacles such as walls, and
reduce resulting damage.
Examples of system operation

2334-5. Using the driving support systems
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Driving
■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.
1
Press “ ” or “ ” of the meter
control switches and select .
2 Press “ ” or “ ” of the meter
control switches and select .
3 Press on the meter control
switches to enable/disable the sys-
tem.
The PKSB OFF indicator comes on
when the Parking Support Brake
function is OFF (not operating).
When the Parking Support Brake func-
tion is switched OFF, system operation
does not resume until the function is
switched back ON through the set-
tings screen on the multi-information
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
A
B
C
D
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 sensor s may not function
properly if subjected to steam.
Changing settings of the Park-
ing Support Brake function (for
static objects)

2344-5. Using the driving support systems
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display. (System operation does not
resume by operating the power
switch.)
■Hybrid system output restraint control
When there is an obstacle, where a potent ial collision may occur, is detected, the
increase of the vehicle speed is restrained due to hybrid system output being con-
trolled.
Accelerator pedal
Brake pedal
Hybrid system output
Braking force
ON
OFF
Operation
A
B
C
D
E
F

2354-5. Using the driving support systems
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Driving
Control starts
Collision is likely
DOWN
“BRAKE!” is displayed in the multi-information display
“Switch to Brake” is displayed in the multi-information display
■Brake Control
If the accelerator is continuously depressed even after the hybrid system output is
being controlled, the brakes are engaged and the vehicle decelerates.
Accelerator pedal
Brake pedal
Hybrid system output
Braking force
ON
OFF
Control starts
Collision is likely
DOWN
Collision possibility is very high
G
H
I
J
K
A
B
C
D
E
F
G
H
I
J

2364-5. Using the driving support systems
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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.233, 370) and all of
the following conditions are met, the system
operates.
●Hybrid system 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 an obstacle in the traveling direc- tion 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
• Hybrid system output restriction 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.
●Hybrid system 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 obstacle is no longer in the traveling direction of the vehicle (6 to 13 ft. [2 to 4
m] ahead).
●Brake control
• The Parking Support Brake function (for
static objects) ha s 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 obstacle is no longer in the traveling
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.230).
Therefore, even if the clearance sonar
detects an obstacle and provides a warning,
the Parking Support Brake function (for
static objects) may not start operating.
■Obstacles not detect ed by the sensors
The following obstacles 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
objects or waving objects
●Low objects
●Thin objects such as wires, fences, ropes
and signposts
●Objects that are extremely close to the
bumper
■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
K
L
M

2374-5. Using the driving support systems
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• 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 an obstacle 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 fender pole or a wire-
less antenna) are inst alled 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 an obstacle that cannot be detected between the vehicle and
another obstacle that can be detected
• An obstacle 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
• The wind is strong
• 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

2384-5. Using the driving support systems
LEXUS NX300h Owners Manu-
al_USA_M78287_en• 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 obstac les. 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 12-volt battery. Perform system ini-
tialization.
■When removing and installing the 12-
volt battery
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.230). 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
●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 obstacles, may cause
the system not operate, or may cause the
system to operate unnecessarily.
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).

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When the hybrid system output restric-
tion control or brake control operates,
the buzzer sounds and a message is
displayed 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.
■Hybrid system output restriction
control is operating (acceleration
limitation control)
■Hybrid system output restriction
control is operating (control to
restrict output as much as possible)
■Brake control is operating
NOTICE
●A towing hook is installed
●When using an automatic car wash
Display and buzzer for hybrid
system output restriction con-
trol and brake control
Situation
Acceleration at a certain speed or higher is not possible.
Multi-informa-tion display/
Head-up dis- play
“Object Detected Accel-eration Reduced”
Navigation/
multimedia sys- tem screen

PKSB OFF IndicatorNot illuminated
Buzzer
Situation
A stronger than normal
brake operation is neces- sary
Multi-informa-tion display/
Head-up dis- play
“BRAKE!”
Navigation/
multimedia sys- tem screen
PKSB OFF IndicatorNot illuminated
BuzzerShort beep
SituationEmergency braking is necessary
Multi-informa-tion display/
Head-up dis- play
“BRAKE!”
Navigation/
multimedia sys- tem screen
PKSB OFF IndicatorNot illuminated
BuzzerShort beep

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■The vehicle is stopped by system
operation
*: If the accelerator pedal is not depressed, “Press Brake Pedal” will be displayed.
■System operation
When the vehicle is stopped by system
operation, the Parking Support Brake func-
tion (for static objects) stops and the PKSB
OFF indicator illuminates.
■System recovery
When the Parking Support Brake function
(for static objects) is stopped by system
operation and you would like to resume
operation, either turn the Parking Support
Brake function (for static objects) ON again
(  P.233), or turn the power switch off and
then back on. Furthermore, when the vehi-
cle moves with an obstacle no longer in the
traveling direction of the vehicle, or when
the traveling direction of the vehicle
changes (such as when switching from
moving forward to backing up, and vice
versa), system operation automatically
resumes.
■Clearance sonar buzzer
Regardless of whether the clearance sonar
is on or off, if the Parking Support Brake
function (for static ob jects) is not stopped
(  P.233), when the front or rear sensors
detect an obstacle and brake control is per- formed, the clearance sonar buzzer also
sounds and a notification of the approxi-
mate distance to the obstacle is provided.
■In the unlikely event that the Parking
Support Brake function (for static
objects) mistakenly operates at a cross-
ing or elsewhere
Even in the unlikely event that the Parking
Support Brake function (for static objects)
mistakenly operates at a crossing or else-
where, brake control is canceled after
approximately 2 seconds, allowing you to
proceed forward and leave the area. Fur-
thermore, brake control is also canceled
when the brake pedal is depressed.
Depressing the accelerator pedal again
allows you to proceed forward and leave
the area.
Situation
The vehicle is stopped
after brake control oper- ation
Multi-informa-tion display/
Head-up dis- play
“Switch to Brake”*
Navigation/
multimedia sys- tem screen
“Press Brake Pedal”
PKSB OFF IndicatorIlluminated
BuzzerShort beep