2019 LEXUS NX300H lane assist

2134-5. Using the driving support systems
LEXUS NX300h Owners Manu-
al_USA_M78287_en
4
Driving
■Operation conditions of each function
●Lane departure alert function
This function operates when all of the fol-
lowing conditions are met.
• LDA is turned on.
• Vehicle speed is approximately 32 mph (50 km/h) or more.
• System recognizes white (yellow) lines.
• Width of traffic lane is approximately 9.8
ft. (3 m) or more.
• Turn signal lever is not operated.
• Vehicle is driven on a straight road or
around a gentle curve with a radius of
more than approximately 492 ft. (150 m).
• No system malfunctions are detected. ( P.214)
●Steering control function
This function operates when all of the fol-
lowing conditions are me t in addition to the
operation conditions for the lane departure
alert function.
•Setting for “Steering Assist” in of the
multi-information display is set to “On”.
( P.86)
• Vehicle is not accelerated or decelerated
by a certain amount or more.
• Steering wheel is not operated with a
steering force level su itable for changing
lanes.
• ABS, VSC, TRAC and PCS are not oper-
ating.
• TRAC or VSC is not turned off.
• Hands off steering wheel warning is not displayed. ( P.213)
●Vehicle sway warning function
This function operates when all of the fol-
lowing conditions are met.
• Setting for “Sway Warning” in of the multi-information display is set to “On”.
( P.86)
• Vehicle speed is approximately 32 mph
(50 km/h) or more.
• Width of traffic lane is approximately 9.8
ft. (3 m) or more.
• No system malfunctions are detected. ( P.214)
■Temporary cancelation of functions
When the operation conditions are no lon-
ger met, a function may be temporarily can-
celed. However, when the operation
conditions are met agai n, operation of the
function is automatically restored.
■Steering control function
Depending on the vehicle speed, lane
departure situation, road conditions, etc.,
the driver may not feel the function is oper-
ating or the function may not operate at all.
■Lane departure alert function
The warning buzzer may be difficult to hear
due to external noise, audio playback, etc.
Also, it may be diffic ult to feel steering
wheel vibrations due to the road conditions
etc.
■Hands off steering wheel warning
When the system determines that the driver
has removed their hands from the steering
wheel while the steering control function is
operating, a warning message urging the
driver to hold the steering wheel and the
symbol shown in the illustration are dis-
played on the multi-information display.
If the driver continues to keep their hands
off of the stee ring wheel, a buzzer sounds
and a warning message and the symbol
shown in the illustration are displayed on
the multi-information di splay. This warning
also operates in the same way when the
driver continuously operates the steering
wheel only a small amount. Always keep
your hands on the steering wheel when
using this system, regardless of warnings.
Depending on the vehicle and road condi-
tions, the warning may not operate.
■Vehicle sway warning function
When the system determines that the vehi-
cle is swaying while the vehicle sway warn-

2164-5. Using the driving support systems
LEXUS NX300h Owners Manu-
al_USA_M78287_enIf a different warning message is displayed,
follow the instructions
displayed on the
screen.
■Customization
The following settings can be changed. For how to change settings, refer to P.421.
“Lane Departure
Alert Unavailable”
The LDA system is
temporarily can-
celed due to a mal-
function in a sensor
other than the cam-
era sensor.
 Turn the LDA
system off and
follow the appro-
priate trouble-
shooting
procedures for
the warning
message. After-
ward, drive the
vehicle for a
short time, and
then turn the
LDA system
back on.
“Lane Departure
Alert Unavailable Below Approx 50km/h”
The LDA system
cannot be used as
the vehicle speed is
less than approxi-
mately 32 mph (50
km/h).
 Drive the vehicle
at approxi-
mately 32 mph
(50 km/h) or
more.
FunctionSetting details
Lane departure alert
functionAdjust alert sensitiv- ity
Adjust alert type
Warning messageDetails/Actions
Steering control functionTurn steering wheel
assistance on and off
Vehicle sway warn- ing function
Turn function on and off
Adjust alert sensitiv-ity
FunctionSetting details

2414-5. Using the driving support systems
LEXUS NX300h Owners Manu-
al_USA_M78287_en
4
Driving
*:If equipped
BSM main switch
Pressing the switch turns the system on or off. When the switch is set to on, the
switch’s indicator
illuminates and the
buzzer sounds. This swit ch is for both Blind
Spot Monitor function and Rear Cross
Traffic Alert function.
BSM outside rear view mirror indi-
cators
Blind Spot Monitor function:
When a vehicle is dete cted in a blind spot
of the outside rear view mirrors or
approaching rapidly from behind into a
blind spot, the outside rear view mirror
indicator on the detected side will illumi-
nate. If the turn signal lever is operated
toward the detected side, the outside rear
view mirror indicator will flash.
Rear Cross Traffic Alert function:
When a vehicle approaching from the right
or left at the rear of the vehicle is detected,
both outside rear view mirror indicators
will flash.
Rear Cross Traffic Alert buzzer
(Rear Cross Traffic Alert function
only)
When a vehicle approaching from the right
or left rear of the vehicle is detected, a
buzzer sounds from behind the right-hand
rear seat.
Navigation/multimedia system
screen (Rear Cross Traffic Alert
function only)
If a vehicle approaching from the right or
left at the rear of th e vehicle is detected,
the Rear Cross Traffic Alert icon ( P.245)
for the detected side will be displayed.
■The BSM outside rear view mirror indi-
cators visibility
When under strong sunlight, the BSM out-
side rear view mirror indicator may be diffi-
cult to see.
BSM (Blind Spot Monitor)*
The Blind Spot Monitor uses the
sensors installed behind the rear
bumper. The system is intended to
assist the driver check areas that
are not easily vi sible. The system
has the following 2 functions:
 The Blind Spot Monitor function
Assists the driver in making the decision
when changing lanes
 The Rear Cross Traffic Alert func-
tion
Assists the driver when backing up
These functions use the same sen-
sors.
System components
A
B
C
D

2454-5. Using the driving support systems
LEXUS NX300h Owners Manu-
al_USA_M78287_en
4
Driving
The Rear Cross Traffic Alert function operat es when your vehicle is in reverse. It
can detect other vehicles approaching from th e right or left rear of the vehicle. It
uses radar sensors to alert the driver of the other vehicle’s existence through flash-
ing the BSM outside rear view mirror indicators and sounding a buzzer.
Approaching vehicles
Detection areas
■Rear Cross Traffic Alert icon dis-
play (if equipped)
When a vehicle approaching from the
right or left at the rear of the vehicle is
detected, the following will be dis-
played on the navigation/multimedia system screen.
Lexus parking assist monitor
A vehicle is approaching from the left
or right at the rear of the vehicle
WARNING
■Cautions regarding the use of the sys-
tem
The driver is solely responsible for safe
driving. Always driv e safely, taking care
to observe your surroundings.
The Blind Spot Monitor function is a sup-
plementary function which alerts the
driver that a vehicle is present in the blind
spot. Do not overly rely on the Blind Spot
Monitor function. The function cannot
judge if it is safe to change lanes, there-
fore over reliance could cause an acci-
dent resulting in death or serious injury.
According to conditions, the system may
not function correctly. Therefore the
driver’s own visual confirmation of safety
is necessary.
The Rear Cross Traffic Alert function
A
B

2524-5. Using the driving support systems
LEXUS NX300h Owners Manu-
al_USA_M78287_enTRAC will turn on when vehicle speed
increases
●If only the TRAC system is turned off, the
TRAC will turn on when vehicle speed
increases
If both the TRAC and VSC systems are
turned off, automatic re-enabling will not
occur when vehicle speed increases.
■Operating conditions of hill-start assist
control
When the following four conditions are met,
the hill-start assist control will operate:
●The shift lever is in a position other than P
or N (when starting off forward/back-
ward on an upward incline).
●The vehicle is stopped.
●The accelerator pedal is not depressed.
●The parking brake is not engaged.
■Automatic system cancelation of hill-
start assist control
The hill-start assist control will turn off in any
of the following situations:
●The shift lever is shifted to P or N.
●The accelerator pedal is depressed.
●The parking brake is engaged.
●2 seconds at maximum elapsed after the
brake pedal is released
WARNING
■The ABS does not operate effectively
when
●The limits of tire gripping performance
have been exceeded (such as exces-
sively worn tires on a snow covered
road).
●The vehicle hydroplanes while driving
at high speed on wet or slick road.
■Stopping distance when the ABS is
operating may exceed that of normal
conditions
The ABS is not designed to shorten the
vehicle’s stopping di stance. Always main-
tain a safe distance from the vehicle in
front of you, especially in the following
situations:
●When driving on dirt, gravel or snow-
covered roads
●When driving with tire chains
●When driving over bumps in the road
●When driving over roads with potholes
or uneven surfaces
■TRAC/VSC may not operate effec-
tively when
Directional control and power may not
be achievable while driving on slippery
road surfaces, even if the TRAC/VSC
system is operating.
Drive the vehicle carefully in conditions
where stability and po wer may be lost.
■Hill-start assist control does not oper-
ate effectively when
●Do not overly rely on the hill-start
assist control. Hill-start assist control
may not operate effectively on steep
inclines and roads covered with ice.
●Unlike the parking brake, hill-start
assist control is not intended to hold
the vehicle stationary for an extended
period of time. Do not attempt to use
hill-start assist control to hold the vehi-
cle on an incline, as doing so may lead
to an accident.
■When the TRAC/ABS/VSC/Trailer
Sway Control is activated
The slip indicator light flashes. Always
drive carefully. Reckless driving may
cause an accident. Exercise particular
care when the indicator light flashes.

3707-2. Steps to take in an emergency
LEXUS NX300h Owners Manu-
al_USA_M78287_en
■LDA indicator
■PKSB OFF indicator (warning buzzer)
■Slip indicator light
■Brake hold operated indicator
Warning lightDetails/Actions
(Orange)
Indicates a malfunction in the LDA (Lane Departure Alert
with steering control)
When “Lane Departure Alert Unavailable” is dis-
played on the multi-information display, turn the LDA
system off, drive the vehicle for a short time, and then
turn the LDA system back on. ( P.211)
When a message other than above is displayed, follow
the instructions displayed in the message.
Warning lightDetails/Actions
(Flashes)
When a buzzer sounds: Indicates a malfunction in the PKSB
(Parking Support Brake) system
 Have the vehicle inspected by your Lexus dealer
immediately.
When a buzzer does not sound:
Indicates that the system is temporarily unavailable, possi-
bly due to a sensor being dirty or covered with ice, etc.
 Clear the dirt, etc.
Warning lightDetails/Actions
Indicates a malfunction in:
The VSC system;
 The TRAC system; or
 The hill-start assist control system
The light will flash when the ABS, VSC or TRAC system is
operating.
 Have the vehicle inspected by your Lexus dealer
immediately.
Warning lightDetails/Actions
(Flashes)
Indicates a malfunction in the brake hold system
Have the vehicle inspected by your Lexus dealer
immediately.

3867-2. Steps to take in an emergency
LEXUS NX300h Owners Manu-
al_USA_M78287_en
WARNING
■When the compact spare tire is
attached
The vehicle speed may not be correctly
detected, and the following systems may
not operate correctly:
• ABS & Brake assist
•VSC
•TRAC
• Dynamic radar cruise control with full- speed range
• PCS (Pre-Collision System)
•EPS
• LDA (Lane Departure Alert with steering control)
• Panoramic view monitor (if equipped)
• Lexus parking assist monitor (if equipped)
• Intuitive parking assist (if equipped)
• Navigation system (if equipped)
• BSM (Blind spot monitor) (if equipped)
• Automatic high Beam (if equipped)
Also, not only can the following system
not be utilized fully, but it may even nega-
tively affect the drive-train components:
•E-Four
■Speed limit when using the compact
spare tire
Do not drive at speeds in excess of 50
mph (80 km/h) when a compact spare
tire is installed on the vehicle.
The compact spare tire is not designed
for driving at high speeds. Failure to
observe this precaution may lead to an
accident causing deat h or serious injury.
■After using the tools and jack
Before driving, make sure all the tools
and jack are securely in place in their
storage location to reduce the possibility
of personal injury during a collision or
sudden braking.
NOTICE
■Be careful when driving over bumps
with the compact spare tire installed
on the vehicle
The vehicle becomes lower when driving
with the compact spar e tire compared to
when driving with standard tires. Be
careful when driving over uneven road
surfaces.
■Driving with tire chains and the com-
pact spare tire
Do not fit tire chains to the compact
spare tire.
Tire chains may damage the vehicle body
and adversely affect driving perfor-
mance.
■When replacing the tires
When removing or fitting the wheels,
tires or the tire pr essure warning valve
and transmitter, contact your Lexus
dealer as the tire pressure warning valve
and transmitter may be damaged if not
handled correctly.

4278-2. Customization
LEXUS NX300h Owners Manu-
al_USA_M78287_en
8
Vehicle specifications
■Turn signal lever ( P.176)
■PKSA (Parking Support Alert)* ( P.226)
*:If equipped
■Driving position memory* ( P.132)
*:If equipped
FunctionDefault settingCustomized set-
ting
The number of times the turn
signal lights flash automati-
cally when the turn signal
lever is moved to the first
position during a lane change
3
4
——O—
5
6
7
Off
FunctionDefault settingCustomized set-ting
Display setting (When intui-
tive parking assist is operat-
ing)
OnOff—OO—
Buzzer volume21—OO—3
FunctionDefault settingCustomized set-ting
Driver’s seat movement when
exiting the vehicleStandardOffO—O—Partial
Selection the door linking
driving position memory with
door unlock operation
Driver’s doorAll doors——O—
ABCD
ABCD
ABCD