2020 LEXUS NX300 warning

1584-1. Before driving
LEXUS NX300 Owners Manual_USA_M78389_en
■GCWR (Gross Combination
Weight Rating)
The maximum allowable gross combi-
nation weight. The gross combination
weight is the sum of the total vehicle
weight (including the occupants, cargo
and any optional equipment installed
on the vehicle) and the weight of the
trailer being towed (including the
cargo in the trailer).
■GVWR (Gross Vehicle Weight
Rating)
The maximum allowable gross vehicle
weight. The gross vehicle weight is the
total weight of the vehicle. When tow-
ing a trailer, it is the sum of the vehicle
weight (including the occupants, cargo
and any optional equipment installed
on the vehicle) and the tongue weight.
■GAWR (Gross Axle Weight Rat-
ing)
The maximum allowable gross axle
weight. The gross axle weight is the
load placed on each axle (front and
rear).
Front GAWR
Rear GAWR
WARNING
●Never tow a trailer without using a
safety chain securely attached to both
the trailer and the vehicle. If damage
occurs to the coupling unit or hitch
ball, there is danger of the trailer wan-
dering into another lane. NOTICE
■When installing a trailer hitch
Use only the position recommended by
your Lexus dealer. Do not install the
trailer hitch on the bumper; this may
cause body damage.
■Do not directly splice trailer lights
Do not directly splice trailer lights.
Directly splicing trailer lights may dam-
age your vehicle’s electrical system and
cause a malfunction.
Towing related terms
A
B

1614-1. Before driving
LEXUS NX300 Owners Manual_USA_M78389_en
4
Driving
Weight carrying ball position:
42.1 in. (1069.9 mm)
Hitch receiver pin hole position:
33.7 in. (855.6 mm)
Please consult your dealer when
installing trailer lights, as incorrect
installation may cause damage to the
vehicle’s lights. Please take care to
comply with your state’s laws when
installing trailer lights. Your vehicle will handle differently
when towing a trailer. Help to avoid an
accident, death or serious injury, keep
the following in mind when towing:

Speed limits for towing a trailer vary
by state or province. Do not exceed
the posted towing speed limit.
 Lexus recommends that the vehicle-
trailer speed limit is 65 mph (104
km/h) on a flat, straight, dry road.
Do not exceed this limit, the posted
towing speed limit or the speed limit
for your trailer as set forth in your
trailer owner’s manual, whichever is
lowest. Instability of the towing vehi-
cle-trailer combination (trailer
sway) increases as speed increases.
Exceeding speed limits may cause
loss of control.
 Before starting out, check the trailer
lights, tires and the vehicle-trailer
connections. Recheck after driving
a short distance.
 Practice turning, stopping and
reversing with the trailer attached in
an area away from traffic until you
become accustomed to the feel of
the vehicle-trailer combination.
 Reversing with a trailer attached is
difficult and requires practice. Grip
the bottom of the steering wheel
and move your hand to the left to
move the trailer to the left. Move
your hand to the right to move the
trailer to right. (This is generally
opposite to reversing without a
trailer attached.) Avoid sharp or
WARNING
■Hitch
Trailer hitch assemb lies have different
weight capacities established by the hitch
manufacturer. Even though the vehicle
may be physically capable of towing a
higher weight, the operator must deter-
mine the maximum weight rating of the
particular hitch assembly and never
exceed the maximum weight rating
specified for the trailer-hitch. Exceeding
the maximum weight rating set by the
trailer-hitch manufacturer can cause an
accident resulting in death or serious
personal injuries.
Positions for towing hitch
receiver and hitch ball
Connecting trailer lights
A
B
Trailer towing tips

1664-2. Driving procedures
LEXUS NX300 Owners Manual_USA_M78389_en
■If “Smart Access System Malfunction
See Owner’s Manual” is displayed on
the multi-information display
The system may be malfunctioning. Have
the vehicle inspected by your Lexus dealer
immediately.
■Electronic key battery
 P.356
■Operation of the engine switch
●If the switch is not pressed shortly and
firmly, the engine switch mode may not
change or the engine may not start.
●If attempting to restart the engine imme-
diately after turning the engine switch off,
the engine may not start in some cases.
After turning the engine switch off, please
wait a few seconds before restarting the
engine.
■If the smart access system with push-
button start has been deactivated by a
customized setting
 P.427
1Stop the vehicle completely.
2
Set the parking brake ( P.173),
and shift the shift lever to P
( P.168).
3
Press the engine switch.
4
Release the brake pedal and check
that the display on the instrument
cluster is off.
Modes can be changed by pressing
the engine switch with brake pedal
WARNING
■When starting the engine
Always start the engine while sitting in
the driver’s seat. Do not depress the
accelerator pedal while starting the
engine under any circumstances.
Doing so may cause an accident result-
ing in death or serious injury.
■Caution while driving
If engine failure occurs while the vehicle
is moving, do not lock or open the doors
until the vehicle reaches a safe and com-
plete stop. The steering lock function will
activate and this may lead to an accident,
resulting in death or serious injury.
NOTICE
■When starting the engine
●Do not race a cold engine.
●If the engine becomes difficult to start
or stalls frequently, have your vehicle
checked by your Lexus dealer immedi-
ately.
■Symptoms indicating a malfunction
with the engine switch
If the engine switch seems to be operat-
ing somewhat differently than usual, such
as the switch sticking slightly, there may
be a malfunction. Contact your Lexus
dealer immediately.
Stopping the engine
WARNING
■Stopping the engine in an emergency
If you want to stop th e engine in an emer-
gency while driving the vehicle, press
and hold the engine switch for more than
2 seconds, or press it briefly 3 times or
more in succession. ( P.366)
However, do not touch the engine switch
while driving except in an emergency.
Turning the engine off while driving will
not cause loss of steering or braking con-
trol, but the power assist to these systems
will be lost. This will make it more difficult
to steer and brake, so you should pull
over and stop the vehicle as soon as it is
safe to do so.
Changing engine switch modes

1684-2. Driving procedures
LEXUS NX300 Owners Manual_USA_M78389_en
*1: To improve fuel efficiency and reduce
noise, shift the shift lever to D for normal
driving.
You can choose gear range suitable for
your driving situation by operating the
paddle shift switches.
*2: Any gear range can be fixed when driv-ing in M mode.
■To protect the automatic transmission
“Transmission Fluid Temp High See
Owner’s Manual” is di splayed on the multi-
information display and a function is
adopted that automatically selects a higher
shift range when the fluid temperature is
high. Have the vehicle inspected by your
Lexus dealer.
■When driving with dynamic radar cruise
control with full-speed range activated
Even when performing the following
actions with the intent of enabling engine
braking, engine braking will not activate
because dynamic radar cruise control with
full-speed range will not be canceled.
●While driving in D position, downshifting
to 5 or 4. ( P.170)
●When switching the driving mode to
Sport mode while driving in D position.
( P.258)
■Restraining sudden start (Drive-Start
Control)
When the following unusual operation is
performed, the engine output may be
restrained.
●When the shift lever is shifted from R to D,
D to R, N to R, P to D, or P to R (D
includes M) with the accelerator pedal
depressed, a warning message appears
on the multi-information display. If a
warning message is shown on the multi-
information display, read the message
and follow the instructions.
●When the accelerator pedal is depressed
too much while the vehicle is in reverse.
■If the “M” indicator do es not come on or
the “D” indicator is displayed even after
shifting the shift lever to M
This may indicate a malfunction in the auto-
matic transmission system. Have the vehicle
inspected by your Lexus dealer. (In this situ-
ation, the transmission will operate in the
same)
■AI-SHIFT
●The AI-SHIFT automatically selects the
suitable gear according to driver perfor-
mance and driving conditions.
The AI-SHIFT automatically operates
when the driving mode select switch is
set to Normal mode with the shift lever in
the D position. (The function will be can-
celed, if the driving mo de select switch is
set to Sport mode or shift lever is put in
the M position.)
●The G AI-SHIFT is automatically
changed to a suitable gear step while
running in Sport mode according to the
driving operations and running condi-
tions.
The G AI-SHIFT automatically operates
when the driving mode select switch is
set to Sport mode with the shift lever in
the D position. (The function will be can-
celed, if the driving mo de is select switch
is set to Normal mode or shift lever is put
Automatic transmission
Select the shift position depending
on your purpose and situation.
Shift position purpose and func-
tions
Shift posi-
tionObjective or function
PParking the vehicle/starting the engine
RReversing
NNeutral
DNormal driving*1
MM mode driving*2 ( P.170)

1694-2. Driving procedures
LEXUS NX300 Owners Manual_USA_M78389_en
4
Driving
in the M position.)
■Shift lock system
The shift lock system is a system to prevent
accidental operation of the shift lever in
starting.
The shift lever can be shifted from P only
when the engine switch is in IGNITION
ON mode and the brake pedal is being
depressed.
■If the shift lever cannot be shifted from P
First, check whether the brake pedal is
being depressed.
If the shift lever cannot be shifted with your
foot on the brake pedal, there may be a
problem with the shift lock system. Have the
vehicle inspected by your Lexus dealer
immediately.
The following steps may be used as an
emergency measure to ensure that the shift
lever can be shifted.
Releasing the shift lock:
1
Set the parking brake.
2
Turn the engine switch off.
3
Depress the brake pedal.
4
Pry the cover up with a flathead screw-
driver or equivalent tool.
To prevent damage to the cover, cover the
tip of the screwdriver with a rag.
5
Press the shift lock override button.
The shift lever can be shifted while the but-
ton is pressed
WARNING
■When driving on slippery road sur-
faces
Be careful of downshifting and sudden
acceleration, as this could result in the
vehicle skidding to the side or spinning.
Shifting the shift lever
While the engine switch is in IGNI-
TION ON mode, move the shift lever
with the brake pedal depressed.
When shifting the shift lever between P
and D, make sure that the vehicle is
completely stopped.

1704-2. Driving procedures
LEXUS NX300 Owners Manual_USA_M78389_en
P.258
To drive using temporary shift range
selection, operate the “-” paddle shift
switch while the shift lever in D. Chang-
ing the shift range enables the level of
engine braking force to be selected.
The shift range can then be selected by
operating the “-” and “+” paddle shift
switches.
1
Upshifting
2
Downshifting
The selected shift range, from 1 to 6,
will be displayed on the multi-informa- tion display.
The initial shift range when the “-” paddle
shift switch is operated is automatically set
to 2, 3, 4 or 5 according to the vehicle
speed.
To return to normal D position driving, the
“+” paddle shift switch
must be held down
for a period of time.
A lower shift range will provide greater
engine braking forces than a higher shift
range.
■Automatic deactivation of shift range
selection in the D position
Shift range selection in the D position will
be deactivated in the following situations:
●When the vehicle comes to a stop
●If the accelerator pe dal is depressed for
more than a certai n period of time
●When the shift lever is shifted to a posi-
tion other than D
To enter M mode, shift the shift lever to
M. Gears can then be selected by
operating the shift lever or paddle shift
switches, allowing you to drive in the
gear of your choice. The gear can be
selected by operating the shift lever or
the “-” and “+” paddle shift switches.
WARNING
■To prevent an accident when releas-
ing the shift lock
Before pressing the shift lock override
button, make sure to set the parking
brake and depress the brake pedal.
If the accelerator pe dal is accidentally
depressed instead of the brake pedal
when the shift lock override button is
pressed and the shift lever is shifted out
of P, the vehicle may suddenly start, pos-
sibly leading to an accident resulting in
death or serious injury.
Selecting the driving mode
Selecting shift ranges in the D
position
Meter dis-
playFunction
D2 - D6
A gear in the range between 1 and the selected gear is auto- matically chosen depending
on vehicle speed and driving conditions
D11st gear is set
Selecting gears in the M position

1714-2. Driving procedures
LEXUS NX300 Owners Manual_USA_M78389_en
4
Driving1Upshifting
2 Downshifting
The gear changes once every time the shift
lever or paddle shift switch is operated.
The selected gear, from 1 to 6, will be fixed
and displayed on the multi-information dis-
play.
When in the M position, the gear will
not change unless the shift lever or
paddle shift switch es are operated.
However, even when in the M position,
the gears will be automatically
changed in the following situation:
 When vehicle speed drops (down-
shift only).
 When the accelerator pedal is
depressed further, while driving
(downshift only).
 When the needle of the tachometer
is in the red zone (the range which
exceeds the allowable revs of the
engine).
■Downshifting restriction warning
buzzer
To help ensure safety and driving perfor-
mance, downshifting operation may some-
times be restricted. In some circumstances,
downshifting may not be possible even
when the shift lever is operated. (A buzzer
will sound twice.)

1744-2. Driving procedures
LEXUS NX300 Owners Manual_USA_M78389_en
the switch again. (P.379)
■Parking brake operation
●When the engine switch is not in IGNI-
TION ON mode, the parking brake can-
not be released using the parking brake
switch.
●When the engine switch is not in IGNI-
TION ON mode, automatic mode (auto-
matic brake setting and releasing) is not
available.
■If “Parking Brake Overheated Parking
Brake Unavailable” is displayed on the
multi-information display
If the parking brake is operated repeatedly
over a short period of time, the system may
restrict operation to prevent overheating. If
this happens, refrain from operating the
parking brake. Normal operation will return
after about 1 minute.
■Parking brake operation sound
When the parking brake operates, a motor
sound (whirring sound) may be heard. This
does not indicate a malfunction.
■Parking brake indicator light and park-
ing brake lamp
●Depending on the engine switch mode,
the parking brake indicator light and
parking brake lamp will turn on and stay
on as described below:
IGNITION ON mode: Comes on until
the parking brake is released.
Not in IGNITION ON mode: Stays on
for approximately 15 seconds.
●When the engine switch is turned off with
the parking brake set, the parking brake
indicator light and parking brake lamp
will stay on for about 15 seconds. This
does not indicate a malfunction.
■Changing the mode
When changing the automatic mode on/off,
the message will be shown on the multi-
information display and the buzzer sounds.
■Parking the vehicle
 P.146
■Parking brake engaged warning buzzer
A buzzer will sound if the vehicle is driven with the parking brake engaged. “Release
Parking Brake” is displayed on the multi-
information display.
■Warning messages and buzzers
Warning messages and buzzers are used to
indicate a system malfunction or to inform
the driver of the need for caution. If a warn-
ing message is shown on the multi-informa-
tion display, read the message and follow
the instructions.
■If the brake system warning light comes
on
 P.376
■Usage in winter time
 P.267
WARNING
■When parking the vehicle
Do not leave a child in the vehicle alone.
The parking brake may be released unin-
tentionally and there is the danger of the
vehicle moving that may lead to an acci-
dent resulting in death or serious injury.
■Parking brake switch
Do not set any objects near the parking
brake switch. Objects may interfere with
the switch and may lead the parking
brake to unexpectedly operate.
NOTICE
■When parking the vehicle
Before you leave the vehicle, shift the
shift lever to P, set the parking brake and
make sure that the vehicle does not
move.
■When the system malfunctions
Stop the vehicle in a safe place and
check the warning messages.