check engine LEXUS NX300 2020 Owners Manual

4TABLE OF CONTENTS
LEXUS NX300 Owners Manual_USA_M78389_en
5-4. Using the storage features
List of storage features............... 292
Luggage compartment features ........................................................... 295
5-5. Using the other interior features Other interior features .............. 299
Garage door opener.................. 309
Compass........................................... 315
6-1. Maintenance and care Cleaning and protecting the vehi-cle exterior ................................... 320
Cleaning and protecting the vehi- cle interior .................................... 323
6-2. Maintenance Maintenance requirements ..... 326
General maintenance ................ 327
Emission inspection and mainte- nance (I/M) programs ............ 330
6-3. Do-it-yourself maintenance Do-it-yourself service precautions............................................................ 331
Hood.................................................. 333
Positioning a floor jack............... 333
Engine compartment.................. 335
Tires ................................................... 343
Tire inflation pressure .................. 351
Wheels.............................................. 353
Air conditioning filter..................355
Electronic key battery ................ 356
Checking and replacing fuses 358
Headlight aim................................. 360
Light bulbs ........................................ 3617-1. Essential information
Emergency flashers .................... 366
If your vehicle has to be stopped in an emergency ............................ 366
If the vehicle is trapped in rising water .............................................. 367
7-2. Steps to take in an emergency If your vehicle needs to be towed.......................................................... 369
If you think something is wrong 373
Fuel pump shut off system ........ 374
If a warning light turns on or a warn- ing buzzer sounds..................... 375
If a warning messa ge is displayed
.......................................................... 384
If you have a flat tire .................... 387
If the engine will not start .......... 395
If you lose your keys.................... 396
If the fuel filler door cannot be opened .......................................... 397
If the electronic key does not oper- ate properly ................................. 397
If the vehicle battery is discharged .......................................................... 400
If your vehicle overheats ........... 403
If the vehicle becomes stuck ... 406
8-1. Specifications Maintenance data (fuel, oil level, etc.) ................................................. 408
Fuel information

............................. 416
Tire information ............................. 418
6Maintenance and care
7When trouble arises
8Vehicle specifications

6
LEXUS NX300 Owners Manual_USA_M78389_en
Please note that this manual applies to
all models and explains all equipment,
including options. Therefore, you may
find some explanations for equipment
not installed on your vehicle.
All specifications provided in this man-
ual are current at the time of printing.
However, because of the Lexus policy
of continual product improvement, we
reserve the right to make changes at
any time without notice.
Depending on specifications, the vehi-
cle shown in the illustrations may differ
from your vehicle in terms of color and
equipment.
Approximately five hours after the
engine is turned off, you may hear
sound coming from under the vehicle
for several minutes. This is the sound of
a fuel evaporation leakage check and,
it does not indicate a malfunction.
A wide variety of non-genuine spare
parts and accessories for Lexus vehi-
cles are currently available in the mar-
ket. You should know that Toyota does
not warrant these products and is not
responsible for their performance, repair, or replacement, or for any dam-
age they may cause to, or adverse
effect they may have on, your Lexus
vehicle.
This vehicle should not be modified
with non-genuine Lexus products.
Modification with non-genuine Lexus
products could affect its performance,
safety or durability, and may even vio-
late governmental regulations. In addi-
tion, damage or performance
problems resulting from the modifica-
tion may not be covered under war-
ranty.
The installation of a mobile two-way
radio system in your vehicle could
affect electronic systems such as:

Multiport fuel injection sys-
tem/sequential multiport fuel injec-
tion system
 Lexus Safety System+ 2.0
 Anti-lock brake system
 SRS airbag system
 Seat belt pretensioner system
Be sure to check with your Lexus
dealer for precautionary measures or
special instructions regarding installa-
tion of a mobile two-way radio system.
The vehicle is equipped with sophisti-
cated computers that will record cer-
tain data, such as:
For your information
Main Owner’s Manual
Noise from under vehicle after
turning off the engine
Accessories, spare parts and
modification of your Lexus
Installation of a mobile two-way
radio system
Vehicle data recording

13Pictorial index
LEXUS NX300 Owners Manual_USA_M78389_en
Windshield wipers ........................................................................................ P.184, 189
Precautions against winter season ................... ......................................................... P.266
To prevent freezing (windshield wiper de-icer)
*................................................. P.284
Precautions against car wash ........................................................................................P.321
Fuel filler door ........................................................................................................... P.19 1
Refueling method ............................................................................................................... .P.191
Fuel type/fuel tank capacity ...... ...................................................................................P.409
Tires.......................................................................................................................... .P.343
Tire size/inflation pressure ............................................................................................ P.413
Winter tires/tire chain .................................................................................................... P.26 6
Checking/rotation/tire pressure warning system.............................................. P.343
Coping with flat tires........................................................................................................ P .387
Hood ......................................................................................................................... P. 333
Opening ........................................................................................................................ ....... P.333
Engine compartment cover ......................................................................................... P.336
Engine oil ..................................................................................................................... .......... P.410
Coping with overheat .....................................................................................................P.403
Warning messages ..........................................................................................................P.384
Headlights ................................................................................................................. P.17 8
Parking lights/daytime running lights............................................................... P.178
Fog lights....................................................................................................................P .184
Cornering lights
*................................................................................................................ P.180
Turn signal lights ...................................................................................................... P.172
Tail lights .................................................................................................................... P.178
License plate lights ................................................................................................. P.178
Back-up light
Shifting the shift lever to R .............................................................................................. P.16 8
Light bulbs of the exterior lights for driving
(Replacing method: P.361, Watts: P.415)
D
E
F
G
H
I
J
K
L
M
N

241-1. For safe use
LEXUS NX300 Owners Manual_USA_M78389_en
1-1.For safe use
Use only floor mats designed specifi-
cally for vehicles of the same model
and model year as your vehicle. Fix
them securely in place onto the carpet.
1
Insert the retaining hooks (clips)
into the floor mat eyelets.
2
Turn the upper knob of each retain-
ing hook (clip) to secure the floor
mats in place.
Always align the marks.
The shape of the reta ining hooks (clips)
may differ from that shown in the illustra-
tion.
Before driving
Observe the following before start-
ing off in the vehicle to ensure
safety of driving.
Installing floor mats
A
WARNING
Observe the following precautions.
Failure to do so may cause the driver’s
floor mat to slip, poss ibly interfering with
the pedals while driving. An unexpect-
edly high speed may result or it may
become difficult to stop the vehicle. This
could lead to an accident, resulting in
death or serious injury.
■When installing the driver’s floor mat
●Do not use floor mats designed for
other models or different model year
vehicles, even if they are Lexus Genu-
ine floor mats.
●Only use floor mats designed for the
driver’s seat.
●Always install the floor mat securely
using the retaining hooks (clips) pro-
vided.
●Do not use two or more floor mats on
top of each other.
●Do not place the floor mat bottom-
side up or upside-down.
■Before driving
●Check that the floor mat is securely
fixed in the correct place with all the
provided retaining hooks (clips). Be
especially careful to perform this
check after cleaning the floor.
●With the engine stopped and the shift
lever in P, fully depress each pedal to
the floor to make sure it does not inter-
fere with the floor mat.

701-4. Theft deterrent system
LEXUS NX300 Owners Manual_USA_M78389_en
■Items to check before locking the
vehicle
To prevent unexpected triggering of
the alarm and vehicle theft, make sure
of the following:
 Nobody is in the vehicle.
 The windows and moon roof (if
equipped) are closed before the
alarm is set.
 No valuables or other personal
items are left in the vehicle.
■Setting
Close the doors and hood, and lock all
the doors. The system will be set auto-
matically after 30 seconds.
The indicator light changes from being on
to flashing when the system is set.
■Canceling or stopping
Do one of the following to deactivate
or stop the alarms:
 Unlock the doors.
 Turn the engine switch to ACCES-
SORY or IGNITION ON mode, or
start the engine. (The alarm will be
deactivated or stopped after a few
seconds.)
■System maintenance
The vehicle has a maintenance-free type
alarm system.
■Triggering of the alarm
The alarm may be triggered in the following
situations:
(Stopping the alarm deactivates the alarm
system.)
●A person inside the vehicle opens a door
or hood, or unlocks the vehicle using an
inside lock button.
●The battery is recharged or replaced
when the vehicle is locked. ( P.402)
Alarm
The alarm uses light and sound to
give an alert when an intrusion is
detected.
The alarm is triggered in the follow-
ing situations when the alarm is set:
 A locked door is unlocked or
opened in any way other than
using the entry function, wireless
remote control or mechanical
key. (The doors will lock again
automatically.)
 The hood is opened.
Setting/canceling/stopping the
alarm system

752-1. Instrument cluster
LEXUS NX300 Owners Manual_USA_M78389_en
2
Vehicle status information and indicators
Warning lights inform the driver of mal-
functions in any of the vehicle’s sys-
tems.
*1: These lights turn on when the engine
switch is turned to IGNITION ON
mode to indicate that a system check is
being performed. They will turn off after
Warning lights
(U.S.A.)
Brake system warning light*1
(  P.375)
(Red)
(Canada)
Brake system warning light*1
(  P.375)
Charging system warning
light
*2 (  P.375)
Low engine oil pressure warn-
ing light
*2 (  P.375)
High coolant temperature
warning light
*2 (  P.376)
(Yellow)
Brake system warning light*1
(  P.376)
(U.S.A.)
Malfunction indicator lamp*1
(  P.376)
(Canada)
Malfunction indicator lamp*1
(  P.376)
SRS warning light
*1 (  P.376)
(U.S.A.)
ABS warning light*1 ( P.377)
(Canada)
ABS warning light*1 ( P.377)
(Yellow)
Electric power steering sys-
tem warning light
*1 ( P.377)
(Red)
Electric power steering sys-
tem warning light
*1 ( P.377)
PCS warning light
*1 (  P.377)
(Orange)
LTA indicator*2 (if equipped)
(  P.378)
LDA indicator
*2 (if equipped)
(  P.378)
PKSB OFF indicator
*1, 3 (if
equipped) ( P.378)
Slip indicator light
*1 (  P.378)
Brake hold operated indica-
tor
*1, 3 (  P.379)
(U.S.A.)
Parking brake indicator*3
(  P.379)
(Canada)
Parking brake indicator*3
(  P.379)
Low fuel level warning light
(  P.379)
Driver’s and front passenger’s
seat belt reminder light
(  P.379)
Rear passengers’ seat belt
reminder light
*4 (  P.380)
Master warning light
*1
(  P.380)
Tire pressure warning light
*1
(  P.380)
Brake Override Sys-
tem/Drive-Start Control warn-
ing light
*2 (  P.381)

772-1. Instrument cluster
LEXUS NX300 Owners Manual_USA_M78389_en
2
Vehicle status information and indicators*1: These lights turn on when the engine
switch is turned to the IGNITION ON
mode to indicate that a system check is
being performed. They will turn off after
the engine is started, or after a few sec-
onds. There may be a malfunction in a
system if the lights do not turn on, or
turn off. Have the vehicle inspected by
your Lexus dealer.
*2: This light illuminates on the multi-infor-mation display.
*3: The light flashes to indicate that the sys-tem is operating.
*4: The light comes on when the system is turned off.
*5: When the outside temperature is approximately 37°F (3°C) or lower, the
indicator will flash for approximately 10
seconds, then stay on.
*6: In order to confirm operation, the BSM outside rear view mirror indicators illu-
minate in the following situations:
When the engine switch is turned to
IGNITION ON mode while the BSM
main switch is set to ON.
When the BSM main switch is set to
ON while the engine switch is in IGNI-
TION ON mode.
If the system is func tioning correctly, the
BSM outside rear view mirror indica-
tors will turn off after a few seconds.
(White)
LTA indicator*2 (if equipped)
(  P.211)
LDA indicator
*2 (if equipped)
(  P.220)
(Green)
LTA indicator*2 (if equipped)
(  P.211)
LDA indicator
*2 (if equipped)
(  P.220)
(Orange)
LTA indicator*2, 3 (if equipped)
(  P.211)
LDA indicator
*2, 3 (if
equipped) ( P.220)
Intuitive parking assist indica-
tor (if equipped) ( P.236)
PKSB OFF indicator
*1, 4 (if
equipped) ( P.242)
Slip indicator light
*1, 3
(  P.261)
VSC off indicator
*1, 4 (  P.261)
PCS warning light
*1, 4
(  P.201)
(AWD mod-
els only)
All-wheel drive lock indicator*1
(  P.264)
(U.S.A.)
Parking brake indicator
( P.172)
(Canada)
Parking brake indicator
( P.172)
Brake hold standby indicator
*1
(  P.175)
Brake hold operated indica-
tor
*1 (  P.175)
Low outside temperature indi-
cator
*2, 5 (  P.79)
BSM outside rear view mirror
indicators
*6, 7 (if equipped)
(  P.250)
Security indicator
*8 (  P.68,
70)
(U.S.A.)
“AIR BAG ON/OFF” indi-
cator
*8 (  P.41)
(Canada)
“AIR BAG ON/OFF” indi-
cator
*8 ( P.41)

812-1. Instrument cluster
LEXUS NX300 Owners Manual_USA_M78389_en
2
Vehicle status information and indicators
Switches between odometer, trip
meter and maintenance required infor-
mation displays. When the trip meter is
displayed, pressing and holding the
button will reset the trip meter. The brightness of the instrument panel
lights can be adjusted.
1
Darker
2
Brighter
■Instrument panel brightness adjustment
The instrument panel brightness levels
when the tail lights are on and off can be
adjusted individually. However, when the
surroundings are bright (daytime, etc.),
turning on the tail lights will not change the
instrument panel brightness. At this time,
any adjustments made to the instrument
panel brightness levels will be applied to
both settings at once.
WARNING
■The information display at low tem-
peratures
Allow the interior of the vehicle to warm
up before using the liquid crystal infor-
mation display. At extremely low tem-
peratures, the information display
monitor may respond slowly, and display
changes may be delayed.
For example, there is a lag between the
driver’s shifting and the new gear number
appearing on the display. This lag could
cause the driver to downshift again,
causing rapid and excessive engine brak-
ing and possibly an accident resulting in
personal death or injury.
NOTICE
■To prevent damage to the engine and
its components
●Do not let the indicator needle of the
tachometer enter the red zone, which
indicates the maximum engine speed.
●The engine may be overheating if the
engine coolant temperature gauge is
in the red zone (H); or “Engine Cool-
ant Temp High” is shown on the multi-
information display. In this case, imme-
diately stop the vehicle in a safe place,
and check the engine after it has
cooled completely. ( P.403)
Changing between the odome-
ter, trip meter and maintenance
required information
Changing the Instrument panel
light brightness

892-1. Instrument cluster
LEXUS NX300 Owners Manual_USA_M78389_en
2
Vehicle status information and indicators
G monitor (if equipped) ( P.84)
 Boost Meter (if equipped) ( P.83)
 Brake Override System ( P.147)
 Drive-Start Control ( P.147)
■“HUD” button
Pressing the button turns the head-up
display on/off and changes the vehicle
speed display units as follows:
U.S.A.
OFF  ON (MPH)  ON (km/h) 
OFF
Canada
OFF  ON (km/h)  ON (MPH) 
OFF
■“DISP” button
Pressing the button changes the dis-
play items (except vehicle speed) as
follows:
• Off
• Eco Driving Indicator
• Tachometer
• Tachometer/Boost Meter (if equipped)
• G monitor (if equipped)
■Head-up display
●The head-up display may seem dark and
hard to see when viewed through sun-
glasses, especially polarized sunglasses.
Adjust the brightness of the head-up dis-
play or remove your sunglasses.
●When the head-up display is turned off, it
will not display anything until it is turned
on again.
Switching the head-up display
A
WARNING
■Before using the head-up display
Check that the position and brightness of
the head-up display image does not
interfere with safe driving. Incorrect
adjustment of the image’s position or
brightness may obstruct the driver’s view
and lead to an accident, resulting in
death or serious injury.
■Caution for changing settings of the
head-up display
As the engine needs to be running while
changing the settings of the head-up dis-
play, ensure that the vehicle is parked in a
place with adequate ventilation. In a
closed area such as a garage, exhaust
gases including harmful carbon monox-
ide (CO) may collect and enter the vehi-
cle. This may lead to death or a serious
health hazard.

1003-2. Opening, closing and locking the doors
LEXUS NX300 Owners Manual_USA_M78389_en
3-2.Opening, closing and locking the doors
■Using the smart access system with
push-button start
Carry the electronic key to enable this
function.
1 Grip the driver’s door handle to
unlock the door. Grip any passen-
ger door handle to unlock all the
doors.
*
Make sure to touch the sensor on the back
of the handle.
The doors cannot be unlocked for 3 sec-
onds after the doors are locked.
2Touch the lock sensor (the indenta-
tion on the surface of the door han-
dle) to lock all the doors.
Check that the door is securely locked.
*: The door unlock settings can be
changed.
■Using the wireless remote control
1 Locks all the doors
Check that the door is securely locked.
2Unlocks all the doors
Pressing the button unlocks the driver’s
door. Pressing the button again within 3
seconds unlocks the other doors.
Press and hold to open the windows and
moon roof
*1, 2
*1
: If equipped
*2: This setting must be customized at your
Lexus dealer.
■Switching the door unlock function
It is possible to set which doors the entry
function unlocks using the wireless remote
control.
1 Turn the engine switch off.
2 When the indicator light on the key sur-
face is not on, press and hold ,
or for approximately 5
seconds while pre ssing and holding
.
The setting changes each time an operation
is performed, as shown below. (When
changing the setting continuously, release
the buttons, wait for at least 5 seconds, and
repeat step 2 .)
Side doors
The vehicle can be locked and
unlocked using the entry function,
wireless remote control or door
lock switch.
Unlocking and locking the doors
from the outside