fuel pressure LEXUS NX300h 2021 Owners Manual

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LEXUS NX300h Owners Manual_USA_M78578_en
Pictorial indexSearch by illustration
For safety
and securityMake sure to read through them
(Main topics: Child seat, theft deterrent system)
Vehicle status
information and
indicatorsReading driving-related information
(Main topics: Meters, multi-information display)
Before drivingOpening and closing the doors and windows,
adjustment before driving
(Main topics: Keys, doors, seats)
DrivingOperations and advice which are necessary for driving
(Main topics: Starting hybrid system, refueling)
Interior featuresUsage of the interior features
(Main topics: Air conditioner, storage features)
Maintenance
and careCaring for your vehicle and maintenance procedures
(Main topics: Interior and exterior, light bulbs)
When trouble
arisesWhat to do in case of malfunction and emergency
(Main topics: Battery discharge, flat tire)
Vehicle
specificationsVehicle specifications, customizable features
(Main topics: Fuel, oil, tire inflation pressure)
For ownersReporting safety defects for U.S. owners, and seat belt,
SRS airbag and headlight aim instructions for Canadian
owners
IndexSearch by symptom
Search alphabetically

4TABLE OF CONTENTS
LEXUS NX300h Owners Manual_USA_M78578_en
Luggage compartment features
........................................................... 308
5-5. Using the other interior features Other interior features ............... 312
Garage door opener.................. 322
Compass.......................................... 328
6-1. Maintenance and care Cleaning and protecting the vehi-cle exterior ................................... 332
Cleaning and protecting the vehi- cle interior .................................... 335
6-2. Maintenance Maintenance requirements ..... 339
General maintenance ................ 340
Emission inspection and mainte- nance (I/M) programs ............ 342
6-3. Do-it-yourself maintenance Do-it-yourself service precautions........................................................... 344
Hood.................................................. 346
Positioning a floor jack............... 346
Engine compartment.................. 348
12-volt battery................................ 354
Tires ................................................... 357
Tire inflation pressure ................. 365
Wheels.............................................. 367
Air conditioning filter..................368
Electronic key battery ................ 369
Checking and replacing fuses . 371
Headlight aim................................. 373
Light bulbs ....................................... 3757-1. Essential information
Emergency flashers .................... 380
If your vehicle has to be stopped in an emergency ............................ 380
If the vehicle is trapped in rising water ............................................... 381
7-2. Steps to take in an emergency If your vehicle needs to be towed.......................................................... 383
If you think something is wrong .......................................................... 386
If a warning light turns on or a warn- ing buzzer sounds..................... 388
If a warning messa ge is displayed
.......................................................... 398
If you have a flat tire .................... 402
If the hybrid syst em will not start
.......................................................... 409
If you lose your keys....................... 411
If the fuel filler door cannot be opened ............................................. 411
If the electronic key does not oper- ate properly ................................... 412
If the 12-volt battery is discharged ............................................................ 414
If your vehicle overheats ............ 418
If the vehicle becomes stuck ..... 421
8-1. Specifications Maintenance data (fuel, oil level, etc.) .................................................. 424
Fuel information .

........................... 432
Tire information ............................ 434
6Maintenance and care
7When trouble arises
8Vehicle specifications

13Pictorial index
LEXUS NX300h Owners Manual_USA_M78578_en
Windshield wipers ........................................................................................ P.196, 201
Precautions against winter season ................... ......................................................... P.279
To prevent freezing (windshield wiper de-icer) .................................................. P.296
Precautions against car wash ...................................................................................... P.333
Fuel filler door ........................................................................................................ P.203
Refueling method .............................................................................................................P. 203
Fuel type/fuel tank capacity ...... ................................................................................... P.425
Tires.......................................................................................................................... ..P.357
Tire size/inflation pressure ...........................................................................................P.430
Winter tires/tire chain .................................................................................................... P.27 9
Checking/rotation/tire pressure warning system.............................................. P.357
Coping with flat tires........................................................................................................ P .402
Hood ..........................................................................................................................P.346
Opening ........................................................................................................................ ....... P.346
Engine compartment cover ......................................................................................... P.349
Engine oil ..................................................................................................................... ......... P.426
Coping with overheat ...................................................................................................... P.418
Warning messages ..........................................................................................................P.398
Headlights .................................................................................................................P.19 0
Parking lights/daytime running lights...............................................................P.190
Fog lights.................................................................................................................... P .196
Cornering lights
*.................................................................................................................P.192
Turn signal lights ......................................................................................................P.183
Tail lights .................................................................................................................... P.190
License plate lights .................................................................................................P.190
Back-up light
Shifting the shift lever to R .............................................................................................. P.18 0
Light bulbs of the exterior lights for driving
(Replacing method: P.375, Watts: P.431)
D
E
F
G
H
I
J
K
L
M
N

812-1. Instrument cluster
LEXUS NX300h Owners Manual_USA_M78578_en
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Vehicle status information and indicators
*1: These lights turn on when the power
switch is turned to ON mode to indi-
cate that a system check is being per-
formed. They will turn off after the
hybrid system is on, 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 a malfunc-tion.
*4: This light illuminates on the center panel.
(Canada)
Malfunction indicator lamp*1
(  P.389)
SRS warning light
*1 (  P.390)
(U.S.A.)
ABS warning light*1 ( P.390)
(Canada)
ABS warning light*1 ( P.390)
(Yellow)
Electric power steering sys-
tem warning light
*1 ( P.390)
(Red)
Electric power steering sys-
tem warning light
*1 ( P.390)
PCS warning light
*1 (  P.391)
(Orange)
LTA indicator*2 (if equipped)
(  P.391)
LDA indicator
*2 (if equipped)
(  P.391)
PKSB OFF indicator
*1, 3 (if
equipped) ( P.392)
Slip indicator light
*1 (  P.392)
Brake hold operated indica-
tor
*1, 3 (  P.392)
(U.S.A.)
Parking brake indicator*3
(  P.392)
(Canada)
Parking brake indicator*3
(  P.392)
Low fuel level warning light
(  P.393)
Driver’s and front passenger’s
seat belt reminder light
( P.393)
Rear passengers’ seat belt
reminder light
*4 (  P.393)
Master warning light
*1
(  P.394)
Tire pressure warning light
*1
(  P.394)
Brake Override Sys-
tem/Drive-Start Control warn-
ing light
*2 (  P.395)
WARNING
■If a safety system warning light does
not come on
Should a safety system light such as the
ABS and SRS airbag warning light not
come on when you start the hybrid sys-
tem, this could mean that these systems
are not available to help protect you in an
accident, which could result in death or
serious injury. Have the vehicle inspected
by your Lexus dealer immediately if this
occurs.

902-1. Instrument cluster
LEXUS NX300h Owners Manual_USA_M78578_en
will be shown.
Call sending/receiving and history
display
Linked with the hands-free system, sending
or receiving call is displayed. For details
regarding the hands-fr
ee system, refer to
the “NAVIGATION AND MULTIMEDIA
SYSTEM OWNER’S MANUAL”.
■Content displayed as drive infor-
mation
Select to display various drive data.
Items displayed can be switched by
pressing or of the meter con-
trol switches to select and pressing
or .
 Current fuel consumption
*1
Displays the current rate of fuel consump-
tion
Average fuel consumption (after
reset
*2/after start/after refuel)*1
Displays the average fuel consumption
since the function was reset, the hybrid sys-
tem was started, and the vehicle was refu-
eled, respectively
Use the displayed average fuel consump-
tion as a reference.
 Average vehicle speed (after
reset
*2/after start)*1
Displays the average vehicle speed since
the function was reset and the hybrid sys-
tem was started, respectively
Elapsed time (after reset*2/after
start)
*1
Displays the elapsed time since the func-
tion was reset and the hybrid system was
started, respectively
 Distance (driving range/after start)*1
Displays the estimated maximum distance
that can be driven with the quantity of fuel
remaining and the distan ce driven after the
hybrid system was started respectively.
• This distance is computed based on your average fuel consumption. As a result,
the actual distance that can be driven
may differ from that displayed.
• When only a small amount of fuel is added to the tank, the display may not be
updated.
When refueling, turn the power switch
off. If the vehicle is refueled without turn-
ing the power switch off, the display may
not be updated.
*1: Displayed when the it em is set in “Drive
Info 1”, “Drive Info 2” and “Drive Info 3”.
*2: The function can be reset by pressing
the of the meter control switches
for longer than 1 second when the item
to reset is displayed.
If there is more than one item that can
be reset, the item selection screen will
appear.
■Energy monitor
 P.99
■G monitor (if equipped)
Displays the acceleration forces of the
front, back, left and right of the vehicle.
Also displays the turning angle of the
steering wheel, brake oil pressure,
accelerator opening.
 The actual vehicle conditions may
differ from those on the display
Drive information
E

932-1. Instrument cluster
LEXUS NX300h Owners Manual_USA_M78578_en
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Vehicle status information and indicators
which sounds when the parking support
alert is operated.
■ PKSB (Parking Support
Brake function) (if equipped)
(  P.253)
 PKSB on/off
Select to enable/dis able the parking sup-
port brake function (for static objects).
■ RSA (Road Sign Assist) (if
equipped) ( P.235)
Select to set up the following items.
 Road Sign Assist
Select to enable/disable road sign assist.
Over Speed
Select to set the over speed alert on/off.
Level of Over Speed
Select to set the over speed alert level.
Others
Select to set the other road sign assist.
■Clock
Select to switch between 12-hour dis-
play and 24-hour display.
■Vehicle Settings
 PBD (Power Back Door)
*1
(  P.114)
Select to set up the following items.
•System settings
Select to enable/dis able the power back
door system.
•Volume
Select to set the volume of the buzzer
which sounds when the power back door
system. • Kick Sensor
*2
Select to enable/dis
able the kick sensor.
*1: Vehicles with power back door
*2: Vehicles with Hand s Free Power Back
Door
 TPMS (Tire Pressure Warning Sys-
tem) ( P.359)
Select to initialize the tire pressure warning
system.
 Scheduled Maintenance ( P.339)
Select to initialize the scheduled mainte-
nance.
 Oil maintenance ( P.350)
Select to reset the engine oil maintenance
information (message indicating mainte-
nance is required and distance until the
next oil change) after engine oil mainte-
nance is performed.
■Meter settings
 Language
Select to change the language on the dis-
play.
 Units
Select to change the unit of measure for
fuel consumption.
 EV Indicator ( P.68)
Select to set the EV indicator on/off.
 Switch settings ( P.89)
Displays a procedure to register a desired
screen to
.
You can register 1 screen as a shortcut,
which can be displayed by pressing
.
 Drive information screen ( P.90)

2784-6. Driving tips
LEXUS NX300h Owners Manual_USA_M78578_en
Control and maintain the vehicle at a
constant speed. Before stopping at a
toll booth or similar, allow plenty of
time to release the accelerator and
gently apply the brakes. A greater
amount of electrical energy can be
regenerated when slowing down.
Use the air conditioning only when
necessary. Doing so can help reduce
excessive gasoline consumption.
In summer: When the ambient tem-
perature is high, use the recirculated
air mode. Doing so will help to reduce
the burden on the air conditioning sys-
tem and reduce fuel consumption as
well.
In winter: Because the gasoline engine
will not automatically cut out until it and
the interior of the vehicle are warm, it
will consume fuel. Also, fuel consump-
tion can be improved by avoiding over-
use of the heater.
Make sure to check the tire inflation
pressure frequently. Improper tire infla-
tion pressure can cause poor fuel
economy.
Also, as snow tires can cause large
amounts of friction, their use on dry
roads can lead to poor fuel economy.
Use tires that are appropriate for the
season. Carrying heavy luggage will lead to
poor fuel economy. Avoid carrying
unnecessary luggage.
Installing a large
roof rack will also cause poor fuel
economy.
Since the gasoline engine starts up and
cuts out automatically when cold,
warming up the engine is unnecessary.
Moreover, frequently driving short dis-
tances will cause the engine to repeat-
edly warm up, which can lead to excess
fuel consumption.
Highway driving
Air conditioning
Checking tire inflation pressure
Luggage
Warming up before driving

3456-3. Do-it-yourself maintenance
LEXUS NX300h Owners Manual_USA_M78578_en
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Maintenance and care
Tire inflation
pressure
( P.365)• Tire pressure gauge
• Compressed air source
Washer fluid
( P.353)
• Water or washer fluid
containing antifreeze
(for winter use)
• Funnel (used only for adding water or washer
fluid)
WARNING
The engine compartment contains many
mechanisms and fluids that may move
suddenly, become hot, or become elec-
trically energized. To avoid death or seri-
ous injury, observe the following
precautions.
■When working on the engine com-
partment
●Make sure that the “IGNITION ON”
on the multi-information display and
the “READY” indicator are both off.
●Keep hands, clothi ng and tools away
from the moving fan and engine drive
belt.
●Be careful not to touch the engine,
power control unit, radiator, exhaust
manifold, etc. right after driving as they
may be hot. Oil and other fluids may
also be hot.
●Do not leave anything that may burn
easily, such as paper and rags, in the
engine compartment.
●Do not smoke, cause sparks or expose
an open flame to fuel. Fuel fumes are
flammable.
ItemsParts and tools■When working near the electric cool-
ing fans or radiator grille
Be sure the power switch is off.
With power switch in ON mode, the
electric cooling fans may automatically
start to run if the air conditioning is on
and/or the coolant temperature is high.
(  P.352)
■Safety glasses
Wear safety glasses to prevent flying or
falling material, fluid spray, etc. from get-
ting in your eyes.
NOTICE
■If you remove the air cleaner filter
Driving with the air cleaner filter
removed may cause excessive engine
wear due to dirt in the air.

3656-3. Do-it-yourself maintenance
LEXUS NX300h Owners Manual_USA_M78578_en
6
Maintenance and care
The recommended cold tire inflation
pressure and tire size are displayed on
the tire and loading information label.
( P.430)
Tire valve Tire pressure gauge
1 Remove the tire valve cap.
2 Press the tip of the tire pressure
gauge onto the tire valve.
3 Read the pressure using the gauge
gradations.
4 If the tire inflation pressure is not at
the recommended level, adjust the
pressure.
If you add too much air, press the
center of the valve to deflate.
5 After completing the tire inflation
pressure measurement and adjust-
ment, apply soapy water to the
valve and check for leakage.
6 Put the tire valve cap back on.
■Tire inflation pressure check interval
You should check tire inflation pressure
every two weeks, or at least once a month.
Do not forget to check the spare.
■Effects of incorrect tire inflation pres-
sure
Driving with incorrect ti re inflation pressure
may result in the following:
●Reduced fuel economy
●Reduced driving comfort and poor han-
dling
●Reduced tire life due to wear
●Reduced safety
●Damage to the drive train
If a tire needs frequent inflating, have it
checked by your Lexus dealer.
■Instructions for checking tire inflation
pressure
When checking tire inflation pressure,
observe the following:
●Check only when the tires are cold.
If your vehicle has been parked for at
least 3 hours or has not been driven for
Tire inflation pressure
Checking the specified tire infla-
tion pressure
Inspection and adjustment pro-
cedure
A
B

3977-2. Steps to take in an emergency
LEXUS NX300h Owners Manual_USA_M78578_en
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When trouble arises
●Avoid abrupt maneuvering and brak-
ing. If the vehicle tires deteriorate, you
could lose control of the steering
wheel or the brakes.
■If a blowout or sudden air leakage
should occur
The tire pressure warning system may
not activate immediately.
■Maintenance of the tires
Each tire, including the spare (if pro-
vided), should be checked monthly when
cold and inflated to the inflation pressure
recommended by the vehicle manufac-
turer on the vehicle placard or tire infla-
tion pressure label (tire and load
information label). (I f your vehicle has
tires of a different size than the size indi-
cated on the vehicle placard or tire infla-
tion pressure label [tire and load
information label], yo u should determine
the proper tire infl ation pressure for
those tires.)
As an added safety feature, your vehicle
has been equipped with a tire pressure
monitoring system (TPMS-tire pressure
warning system) that illuminates a low
tire pressure telltale (tire pressure warn-
ing light) when one or more of your tires
is significantly under-inflated. Accord-
ingly, when the low tire pressure telltale
(tire pressure warnin g light) illuminates,
you should stop and check your tires as
soon as possible, and inflate them to the
proper pressure. Driving on a signifi-
cantly under-inflated tire causes the tire
to overheat and can lead to tire failure.
Under-inflation also reduces fuel effi-
ciency and tire tread life, and may affect
the vehicle’s handling and stopping abil-
ity.
Please note that the TPMS (tire pressure
warning system) is not a substitute for
proper tire maintenance, and it is the
driver’s responsibility to maintain correct
tire pressure, even if under-inflation has
not reached the level to trigger illumina-
tion of the TPMS low tire pressure telltale
(tire pressure warning light).
Your vehicle has also been equipped with
a TPMS (tire pressure warning system)
malfunction indicator to indicate when
the system is not operating properly. The
TPMS (tire pressure warning system)
malfunction indicator is combined with
the low tire pressure telltale (tire pres-
sure warning light) . When the system
detects a malfunction, the telltale will
flash for approximately one minute and
then remain continuously illuminated.
This sequence will continue upon subse-
quent vehicle start-ups as long as the
malfunction exists. When the malfunction
indicator is illuminated, the system may
not be able to detect or signal low tire
pressure as intended.
TPMS (tire pressure warning system)
malfunctions may occur for a variety of
reasons, including the installation of
replacement or alternate tires or wheels
on the vehicle that prevent the TPMS
(tire pressure warning system) from func-
tioning properly. Always check the
TPMS (tire pressure warning system)
malfunction telltale after replacing one
or more tires or wheels on your vehicle to
ensure that the replacement or alternate
tires and wheels allow the TPMS (tire
pressure warning system) to continue to
function properly.
NOTICE
■To ensure the tire pressure warning
system operates properly
Do not install tires with different specifi-
cations or makers, as the tire pressure
warning system may not operate prop-
erly.