air filter LEXUS NX300h 2021 Owners Manual

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

731-4. Hybrid system
LEXUS NX300h Owners Manual_USA_M78578_en
1
For safety and security
Air intake vents
Air discharge vents When a certain level of impact is
detected by the impact sensor, the
emergency shut off system blocks the
high voltage current and stops the fuel
pump to minimize the risk of electrocu-
tion and fuel leakage. If the emergency
shut off system activates, your vehicle
will not restart. To restart the hybrid
system, contact your Lexus dealer.
A message is automatically displayed
when a malfunction occurs in the
hybrid system or an improper opera-
tion is attempted.
If a warning message is shown on the
multi-information display, read the
message and follow the instructions.
NOTICE
■Hybrid battery (traction battery) air
intake and discharge vents
●Do not place objects
that will block the
air intake vents. The hybrid battery
(traction battery) may have a reduc-
tion in hybrid battery (traction battery)
output as well as be damaged.
●Clean the air intake and discharge
vents regularly to prevent the hybrid
battery (traction battery) from over-
heating.
●Do not get water or foreign materials
in either the air intake and discharge
vents as this may cause a short circuit
and damage the hybrid battery (trac-
tion battery).
A
B
●If “Maintenance required for Traction
battery cooling parts See owner’s
manual” is shown on the multi-informa-
tion display, clean the air intake vents
(  P.337). If the message is still dis-
played after cleaning the air intake
vents, have the vehicle inspected by
your Lexus dealer.
●A filter is installed to the air intake vent.
When the filter re mains noticeably
dirty even after cleaning the air intake
vent, filter cleaning or replacement is
recommended. For information
regarding filter cleaning or replace-
ment, contact your Lexus dealer.
Emergency shut off system
Hybrid warning message

2935-2. Using the air conditioning system and defogger
LEXUS NX300h Owners Manual_USA_M78578_en
5
Interior features
■When the outside temperature is low
The dehumidification function may not
operate even when “A/C” is pressed or
“A/C” is selected.
■Ventilation and air conditioning odors
●To let fresh air in, set the air conditioning
system to the outside air mode.
●During use, various odors from inside and
outside the vehicle may enter into and
accumulate in the air conditioning sys-
tem. This may then cause odor to be
emitted from the vents.
●To reduce potential odors from occur-
ring:
• It is recommended that the air condition-
ing system be set to outside air mode
prior to turning the vehicle off.
• The start timing of the blower may be
delayed for a short period of time imme-
diately after the air conditioning system is
started in automatic mode.
■Air conditioning filter
 P.368
■Air conditioning system refrigerant
●A label regarding the refrigerant of the
air conditioning system is attached to the
hood at the location shown in the follow-
ing illustration.
●The meaning of each symbol on the label
are as follows:
■Customization
Settings (e.g. A/C automatic mode switch
operation) can be changed.
(Customizable features: P. 443)
Caution
Air conditioning system
Air conditioning system lubri-
cant type
Requires registered techni-
cian to service air conditioning
system
Flammable refrigerant
WARNING
■To prevent the windshield from fog-
ging up
Do not use the front windshield defogger
switch during cool air operation in
extremely humid weather. The difference
between the temperature of the outside
air and that of the windshield can cause
the outer surface of the windshield to fog
up, blocking your vision.
■To prevent burns
●Do not touch the rear view mirror sur-
faces when the outside rear view mir-
ror defoggers are on.
●Vehicles with windshield wiper de-
icer: Do not touch the glass at lower
part of the windshield or to the side of
the front pillars when the windshield
wiper de-icer is on.
NOTICE
■To prevent 12-volt battery discharge
Do not leave the air conditioning system
on longer than necessary when the
hybrid system is off.
■When repairing/replacing parts of
the air conditioning system
Have repair/replace ment performed by
your Lexus dealer. When a part of the air
conditioning system, such as the evapo-
rator, is to be re placed, it must be
replaced with a new one.

2955-2. Using the air conditioning system and defogger
LEXUS NX300h Owners Manual_USA_M78578_en
5
Interior features
minates on the screen.
Adjusting the temperature for
driver and passenger seats sepa-
rately (“DUAL” mode) (P.298)
Set eco air conditioning mode
Air conditioning and heater output is lim-
ited to prioritize fuel economy.
Cooling and dehumidification func-
tion
Select S-FLOW mode ( P.296)
Prevent ice from building up on the
windshield and wiper blades
(Windshield wiper de-icer) (if
equipped)
Removing pollen from the air
(Micro dust and pollen filter)
■Side display (Vehicles with naviga-
tion system)
Adjust the left-hand side tempera-
ture setting Adjust the fan speed setting
Adjust the right-hand side tem-
perature setting
Set cooling and dehumidification
function on/off
Adjust the temperature for the
driver’s and front passenger’s seats
separately (“DUAL” mode)
(
P.298)
Select the air flow mode
■Fogging up of the windows
●The windows will easily fog up when the
humidity in the vehicle is high. Pressing
“A/C” button or selecting “A/C” will
dehumidify the air from the outlets and
defog the windshield effectively.
●If you turn “A/C” off, the windows may
fog up more easily.
●The windows may fog up if the recircu-
lated air mode is used.
■Windshield wiper de-icer (if equipped)
This feature is used to prevent ice from
building up on the windshield and wiper
blades.
Select on the option control screen.
When the windshield wiper de-icer on, is displayed on the air conditioning
control screen.
The windshield wiper de-icer will automati-
cally turn off after a period of time.
■Eco air conditioning mode
When Eco mode is selected using the driv-
ing mode select switch, eco air conditioning
mode turns on. When a drive mode other
than Eco mode is selected, eco air condi-
tioning mode may turn off.
■S-FLOW mode
Priority for airflow is given to the front seats,
and the airflow and air conditioning for the
rear seats is effe ctively controlled.
A
B
C
D
E
F
A
B
C
D
E
F

2965-2. Using the air conditioning system and defogger
LEXUS NX300h Owners Manual_USA_M78578_en
Select on the option control screen.
The indicator comes on when S-FLOW
mode is on.
Select again to return to the previ-
ous mode.
■Micro dust and pollen filter
Pollen is removed from the air and the air
flows to the upper part of the body.
Select on the option control screen.
When the micro dust and pollen filter is on, is displayed on the air conditioning
control screen.
In order to prevent the windshield from fog-
ging up when the outside air is cold, the
dehumidification function may operate.
The pollens are filtered out even if the micro
dust and pollen filter is turned off.
1 Press the “AUTO” button.
2 Adjust the temperature setting.
3 To stop the operation, press the
“OFF” button.
If the fan speed setting or air flow
modes are operated , the automatic
mode indicator goes off. However,
automatic mode for functions other
than that operated is maintained.
■Using automatic mode
Fan speed is adjusted automatically accord- ing to the temperature setting and the
ambient conditions.
Therefore, the fan may stop for a while until
warm or cool air is ready to flow immedi-
ately after the “AUTO” button is pressed or
“AUTO” is selected.
■Windshield fog detection function
When automatic mode is set, the humidity
sensor ( P.297) detects fog on the wind-
shield and controls the air conditioning sys-
tem to prevent fog.
■Air conditioning filter
 P.368
■Customization
Settings (e.g. A/C automatic mode switch
operation) can be changed.
(Customizable features: P.443)
To turn on the “DUAL” mode, perform
WARNING
■To prevent burns (vehicles with wind-
shield wiper de-icer)
Do not touch the glass at lower part of
the windshield or to the side of the front
pillars when the wind shield wiper de-icer
is on.
Using automatic mode
NOTICE
■Humidity sensor
In order to detect fog on the windshield,
a sensor which monitors the temperature
of the windshield, the surround humidity,
etc., is installed.
Follow these points to avoid damaging
the sensor:
●Do not disassemble the sensor
●Do not spray the glass cleaner on the
sensor or subject it to strong impacts
●Do not stick anything on the sensor
Adjusting the temperature for
driver and passenger seats sepa-
rately (“DUAL” mode)

331
LEXUS NX300h Owners Manual_USA_M78578_en
6
6
Maintenance and care
Maintenance and care
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 .................................... 375

3386-1. Maintenance and care
LEXUS NX300h Owners Manual_USA_M78578_en
Remove dirt using a water-damp-
ened soft cloth or synthetic chamois.
 Wipe the surface with a dry, soft
cloth to remove any remaining
moisture.
■Cleaning the areas with satin-finish
metal accents
The metal areas use a layer of real metal for
the surface. It is necessary to clean them
regularly. If dirty areas are left uncleaned for long periods of time, they may be difficult to
clean.

Remove dirt and dust using a vac-
uum cleaner.
 Wipe off any excess dirt and dust
with a soft cloth dampened with
diluted detergent.
Use a diluted water solution of approxi-
mately 5% neutral wool detergent.
Wring out any excess water from
the cloth and thoroughly wipe off all
remaining traces of detergent.
 Wipe the surface with a dry, soft
cloth to remove any remaining
moisture. Allow the leather to dry in
a shaded and ventilated area.
■Caring for leather areas
Lexus recommends cleani ng the interior of
the vehicle at least twice a year to maintain
the quality of the vehicle’s interior.
 Remove dirt and dust using a vac-
uum cleaner.
 Wipe it off with a soft cloth damp-
ened with neutral detergent diluted
to approximately 1%.
 Wring out any excess water from
the cloth and thoroughly wipe off
remaining traces of detergent and
water.
NOTICE
■When cleaning the air intake vents
When cleaning the air intake vent, make
sure to only use a vacuum to suck out
dust and clogs. If a compressed air blow
gun, etc. is used to blow out dust and
clogs, the dust or clogs may be pushed
into the air intake ve nt, which may affect
the performance of the hybrid battery
(traction battery) and cause a malfunc-
tion.
■To prevent damage to the vehicle
Observe the following precautions. Fail-
ure to do so may cause damage to the
vehicle.
●Do not use water or other liquid to
clean the air intake vents
●Do not install anything but the filters
exclusive for this vehicle to the air
intake vents or use the vehicle without
installing the filters.
Cleaning the areas with satin-fin-
ish metal accents
Cleaning the leather areas
Cleaning the synthetic leather
areas

3456-3. Do-it-yourself maintenance
LEXUS NX300h Owners Manual_USA_M78578_en
6
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.

3686-3. Do-it-yourself maintenance
LEXUS NX300h Owners Manual_USA_M78578_en
1Turn the power switch off.
2 Open the glove box. Slide off the
damper.
3 Push in the glove box on the vehi-
cle’s outer side to disconnect the
claws. Then pull out the glove box
and disconnect the lower claws. 4
Remove the filter cover.
5 Remove the air conditioning filter
and replace it with a new one.
The “ UP” marks shown on the filter
should be pointing up.
■Checking interval
Inspect and replace the air conditioning fil-
ter according to the maintenance schedule.
In dusty areas or areas with heavy traffic
flow, early replacement may be required.
(For scheduled maintenance information,
please refer to the “Owner’s Manual Sup-
plement” or “Scheduled Maintenance”.)
■If air flow from the vents decreases dra-
matically
The filter may be clogged. Check the filter
and replace if necessary.
■Air conditioning filt er with deodorizing
function
When fragrances are placed in your vehi-
cle, the deodorizing effect may become
significantly weakened in a short period:
When an air conditioning odor comes out
continuously, replace the conditioning filter.
Air conditioning filter
The air conditioning filter must be
changed regularly to maintain air
conditioning efficiency.
Removal method

3696-3. Do-it-yourself maintenance
LEXUS NX300h Owners Manual_USA_M78578_en
6
Maintenance and care
■When the card key battery needs to be
replaced (if equipped)
The battery for the card key is available only
at Lexus dealers. Your Lexus dealer can
replace the battery for you.
■If the electronic key battery is depleted
The following symptoms may occur:
●The smart access system with push-but-
ton start and wireless remote control will
not function properly.
●The operationa l range will be reduced.
Prepare the following before replacing
the battery:
Flathead screwdriver
 Lithium battery CR2032
■Use a CR2032 lithium battery
●Batteries can be purchased at your Lexus
dealer, local electrical appliance shops or
camera stores.
●Replace only with the same or equivalent
type recommended by the manufacturer.
●Dispose of used batteries according to
the local laws.
NOTICE
■When using the air conditioning sys-
tem
Make sure that a filter is always installed.
Using the air conditioning system without
a filter may cause damage to the system.
Electronic key battery
Replace the battery with a new one
if it is depleted.
Items to prepare