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314 6-1. Maintenance and care
LEXUS NX300h Owners Manu-
al_USA_OM78212U 6-1.Maintenance and care
 Working from top to bottom, liber-
ally apply water to the vehicle body,
wheel wells and underside of the
vehicle to remove any dirt and dust.
 Wash the vehicle body using a
sponge or soft cloth, such as a
chamois.
 For hard-to-remove marks, use car
wash soap and rinse thoroughly with
water.
 Wipe away any water.
 Wax the vehicle when the water-
proof coating deteriorates. If water does not bead on a clean surface,
apply wax when the vehicle body is cool.
■
Self-restoring coat
The vehicle body has a self-restoring coat-
ing that is resistant to small surface
scratches caused in a car wash etc.
●
The coating lasts for 5 to 8 years from
when the vehicle is delivered from the
plant.
●
The restoration time differs depending on
the depth of the scratch and outside tem-
perature. The restoration time may
become shorter when the coating is
warmed by applying warm water.
●
Deep scratches caused by keys, coins,
etc. cannot be restored.
●
Do not use wax that contain abrasives. ■
Automatic car washes ●
Before washing the vehicle:
• Fold the mirrors
• Turn off the power back door (if
equipped)
Start washing from the front of the vehicle.
Extend the mirrors before driving.●
Brushes used in automatic car washes
may scratch the vehicl e surface and harm
your vehicle’s paint. ●
Rear spoiler may not be washable in
some automatic car washes. There may
also be an increased risk of damage to
vehicle. ■
High pressure car washes ●
Do not allow the nozzles of the car wash
to come within close proximity of the win-
dows. ●
Before using the car wash, check that the
fuel filler door on your vehicle is closed
properly. ■
Note for a smart access system with
push-button start ●
If the door handle becomes wet while the
electronic key is within the effective
range, the door may lock and unlock
repeatedly. Place the key in a position 6
ft. (2 m) or more separate from the vehi-
cle while the vehicle is being washed.
(Take care to ensure that the key is not
stolen.) ●
If the electronic key is inside the vehicle
and a door handle becomes wet during a
car wash, a buzzer will sound outside the
vehicle. To turn off the alarm, lock all the
doors.
●
Set the electronic key to battery-saving
mode to disable the smart access system
with push-button start. ( → P.123)
■
Aluminum wheels
●
Remove any dirt immediately by using a
neutral detergent.
●
Wash detergent off with water immedi-
ately after use.
●
To protect the paint from damage, make
sure to observe the following precau-
tions.Cleaning and protecting the
vehicle exterior Perform cleaning in a manner
appropriate to each component
and its material.
Cleaning instructions

3216-2. Maintenance
LEXUS NX300h Owners Manu-
al_USA_OM78212U 6
Maintenance and care Luggage compartment Items Check points
12-volt battery Check the connections.
( → P.333)
Vehicle interior Items Check points
Accelerator
pedal • The accelerator pedal
should move smoothly
(without uneven pedal
effort or catching).
Brake pedal • Does the brake pedal
move smoothly?
• Does the brake pedal
have appropriate clear-
ance from the floor?
• Does the brake pedal
have the correct amount
of free play?
Brakes •The vehicle should not
pull to one side when the
brakes are applied.
• The brakes should work
effectively.
• The brake pedal should
not feel spongy.
• The brake pedal should
not get too close to the
floor when the brakes
are applied.
Head
restraints • Do the head restraints
move smoothly and lock
securely?
Hybrid trans-
mission “Park”
mechanism • When parked on a slope
and the shift lever is in P,
is the vehicle securely
stopped? Indicators/
buzzers • Do the indicators and
buzzers function prop-
erly?
Lights • Do all the lights come
on?
Parking brake • Does the parking brake
switch operate nor-
mally?
• When parked on a slope
and the parking brake is
on, is the vehicle
securely stopped?
Seat belts • Do the seat belts oper-
ate smoothly?
• The seat belts should not
be damaged.
Seats • Do the seat controls
operate properly?
Steering
wheel • Does the steering wheel
rotate smoothly?
• Does the steering wheel
have the correct amount
of free play?
• There should not be any
strange sounds coming
from the steering wheel.
Vehicle exterior Items Check points
Doors • Do the doors operate
smoothly?
Engine hood • Does the engine hood
lock system work prop-
erly?Items Check points

3256-3. Do-it-yourself maintenance
LEXUS NX300h Owners Manu-
al_USA_OM78212U 6
Maintenance and care 1 Pull the hood lock release lever. The hood will pop up slightly.
2 Pull up the auxiliary catch lever and
lift the hood.WARNING●
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.■
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.331)■
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. Hood
Opening the hood
WARNING
■
Pre-driving check
Check that the hood is fully closed and
locked.
If the hood is not locked properly, it may
open while the vehicle is in motion and
cause an accident, which may result in
death or serious injury.

3296-3. Do-it-yourself maintenance
LEXUS NX300h Owners Manu-
al_USA_OM78212U 6
Maintenance and care 5 Holding a rag under the end, pull
the dipstick out and check the oil
level.
Low
Normal
Excessive
Measuring side
6 Wipe the dipstick and reinsert it
fully. ■
Checking the oil type and prepar-
ing the items needed
Make sure to check the oil type and
prepare the items needed before add-
ing oil.
 Engine oil selection → P.402
 Oil quantity (Low Full) 1.6 qt. (1.5 L, 1.3 Imp.qt.)
 Items Clean funnel
■
Adding engine oil
If the oil level is below or near the low
level mark, add engine oil of the same
type as that already in the engine. 1 Remove the oil filler cap by turning
it counterclockwise.
2 Add engine oil slowly, checking the
dipstick.
3 Install the oil filler cap by turning it
clockwise. ■
Engine oil consumption
A certain amount of engine oil will be con-
sumed while driving. In the following situa-
tions, oil consumption may increase, and
engine oil may need to be refilled in
between oil maintenance intervals. ●
When the engine is new, for example
directly after purchasing the vehicle or
after replacing the engine ●
If low quality oil or oil of an inappropriate
viscosity is used ●
When driving at high engine speeds or
with a heavy load, when towing, or when
driving while accelera ting or decelerat-
ing frequently ●
When leaving the engine idling for a long
time, or when driving frequently through
heavy traffic
■
After changing the engine oil
The engine oil maintenance data should be
reset. Perform the fo llowing procedures:
1 Press or of the meter control
switches and select .A
B
C
D

3336-3. Do-it-yourself maintenance
LEXUS NX300h Owners Manu-
al_USA_OM78212U 6
Maintenance and care The 12-volt battery is located in the left-
hand side of luggage compartment.
■
Before recharging
When recharging, the 12-volt battery pro-
duces hydrogen gas which is flammable
and explosive. Therefore, observe the fol-
lowing precautions before recharging: ●
If recharging with the 12-volt battery
installed on the vehicle, be sure to discon-
nect the ground cable. ●
Make sure the power switch on the char-
ger is off when connecting and discon-
necting the charger cables to the 12-volt
battery. ■
After recharging/reconnecting the 12-
volt battery ●
The hybrid system may not start. Follow
the procedure below to initialize the sys-
tem.
1 Shift the shift lever to P.
2 Open and close any of the doors.
3 Restart the hybrid system.
●
Unlocking the doors using the smart
access system with pu sh-button start may
not be possible immediately after recon-
necting the 12-volt battery. If this hap-
pens, use the wireless remote control or
the mechanical key to lock/unlock the
doors.
●
Start the hybrid system with the power
switch in ACCESSORY mode. The WARNING■
When adding washer fluid
Do not add washer fluid when the hybrid
system is hot or operating as washer fluid
contains alcohol and may catch fire if
spilled on the engine etc.
NOTICE■
Do not use any fluid other than
washer fluid
Do not use soapy water or engine anti-
freeze instead of washer fluid.
Doing so may cause streaking on the
vehicle’s painted surfaces, as well as
damaging the pump leading to problems
of the washer fluid not spraying. ■
Diluting washer fluid
Dilute washer fluid with water as neces-
sary.
Refer to the freezing temperatures listed
on the label of the washer fluid bottle. 12-volt battery
Location

354 6-3. Do-it-yourself maintenance
LEXUS NX300h Owners Manu-
al_USA_OM78212U Before replacing, check the wattage of
the light bulb to be replaced.
( → P.407) ■
Front side marker lights (bulb type)
1 Turn the bulb base counterclock-
wise.
2 Remove the light bulb.
3 When installing, reverse the steps
listed. ■
Front turn signal lights (bulb type)
1 Open the hood and remove the
cover for engine compartment
cover. ( → P.325, 328) 2 Remove the cover.
Push the center of the clip.
Remove the clip and cover.
3 Turn the bulb base counterclock-
wise.
4 Remove the light bulb.Replacing light bulbs
A
B

3556-3. Do-it-yourself maintenance
LEXUS NX300h Owners Manu-
al_USA_OM78212U 6
Maintenance and care 5 Replace the light bulb.
6 Turn clockwise and set the bulb
base.
7 Attach the clip to the cover.
Push up on the center of the clip.
Attach the clip. 8 Attach the cover.
Align the 2 tabs positions and close
the cover.
Fix the cover by pushing the center
of the clip.
9 Install the engine compartment
cover. ( → P.328)
A
B WARNING■
Replacing light bulbs ●
Be sure to stop the hybrid system and
turn off the lights. Do not attempt to
replace the bulb immediately after
turning off the lights.
The bulbs become very hot and may
cause burns.
●
Do not touch the glass portion of the
light bulb with bare hands. When it is
unavoidable to hold the glass portion,
use and hold with a clean dry cloth to
avoid getting moisture and oils on the
bulb.
Also, if the bulb is scratched or
dropped, it may blow out or crack.
●
Fully install light bulbs and any parts
used to secure them. Failure to do so
may result in heat damage, fire, or
water entering the he adlight unit. This
may damage the headlights or cause
condensation to build up on the lens.
●
Do not attempt to repair or disassem-
ble light bulbs, connectors, electric cir-
cuits or component parts.
Doing so may result in death or serious
injury due to electric shock. A
B

356 6-3. Do-it-yourself maintenance
LEXUS NX300h Owners Manu-
al_USA_OM78212U WARNING■
To prevent damage or fire●
Make sure bulbs are fully seated and
locked.●
Check the wattage of the bulb before
installing to prev ent heat damage.

360 7-2. Steps to take in an emergency
LEXUS NX300h Owners Manu-
al_USA_OM78212U 7-2.Steps to take in an emergency
If your vehicle needs to be
towed If towing is ne cessary, we recom-
mend having your vehicle towed by
your Lexus dealer or commercial
towing service, using a wheel-lift
type truck or flatbed truck.
Use a safety chain system for all
towing, and abide by all state/pro-
vincial and local laws.
If towing your vehicle with a wheel-
lift type truck, use a towing dolly.
( → P.361, 360) WARNING
Observe the following precautions.
Failure to do so may result in death or
serious injury. ■
When towing the vehicle
Be sure to transport the vehicle with all
four wheels raised off the ground. If the
vehicle is towed with the tires contacting
the ground, the drivetrain or related
parts may be damaged, the vehicle may
fly off the truck, or electricity generated
by the operation of the motor may cause
a fire to occur depending on the nature
of the damage or malfunction. ■
While towing ●
When towing using a cables or chains,
avoid sudden starts, etc. which place
excessive stress on the towing eyelets,
cables or chains. The towing eyelets,
cables or chains may become dam-
aged, broken debris may hit people,
and cause serious damage. ●
Do not turn the power switch off.
There is a possibility that the steering
wheel is locked and cannot be oper-
ated. ■
Installing towing eyelets to the vehi-
cle
Make sure that towing eyelets are
installed securely.
If not securely installed, towing eyelets
may come loose during towing.
NOTICE■
To prevent damage to the vehicle
when towing using a wheel-lift type
truck ●
Do not tow the vehicle from the rear
when the power switch is off. The
steering lock mechanism is not strong
enough to hold the front wheels
straight.
●
When raising the vehicle, ensure ade-
quate ground clearance for towing at
the opposite end of the raised vehicle.
Without adequate clearance, the vehi-
cle could be damaged while being
towed.
■
To prevent damage to the vehicle
when towing with a sling-type truck
Do not tow with a sling-type truck, either
from the front or rear.

3757-2. Steps to take in an emergency
LEXUS NX300h Owners Manu-
al_USA_OM78212U 7
When trouble arises The warning lights and warning buzzers op erate as follows depending on the con-
tent of the message. If a message indicates the need for inspection by a dealer, have
the vehicle inspected by your Lexus dealer immediately.
*
: A buzzer sounds the first time a message is shown on the multi-information display.
■
System warning lights
The master warning light does not come on
or flash in the following cases. Instead, a
separate system warning light will come on
along with a message shown on the multi-
information display.
●
Malfunction of the ABS
The ABS warning light comes on.
( → P.367)
●
Malfunction of the charging system
The charging system warning light comes
on. ( → P.365)
■
If “Hybrid System Overheated Reduced
Output Power” is shown
This message may be displayed when driv-
ing under severe operating conditions. (For example, when driving up a long steep hill.)
Handling method: → P.394■
If “Maintenance required for Traction
battery cooling parts at your dealer” is
shown
The filter may be clogge d, or the air intake
vents or ducts may be blocked. Have the
vehicle inspected by your Lexus dealer.
■
If “Aux Battery Low” is shown
●
When the display goes off after several
seconds *
Maintain the hybrid system operation for
more than 15 minutes and charge the 12-
volt battery.
●
When the display does not go off
Start up the hybrid system using the pro-
cedures for “If the 12-volt battery is dis-Messages and warnings System
warning
light Warning buzzer *
Warning
Comes
on ⎯ Sounds Indicates an important situation, such as
when a system related to driving is malfunc-
tioning or that danger may result if the cor-
rection procedure is not performed
⎯ Comes
on
or flashes Sounds Indicates an important situation, such as
when the systems shown on the multi-infor-
mation display may be malfunctioning
Flashes ⎯ Sounds Indicates a situation, such as when damage
to the vehicle or danger may result
Comes
on ⎯ Does not sound Indicates a condition, such as malfunction of
electrical components, their condition, or
indicates the need for maintenance
Flashes ⎯ Does not sound Indicates a situation, such as when an opera-
tion has been performed incorrectly, or indi-
cates how to perform an operation correctly