LEXUS NX 300H (2019 year). Instruction

1-1. For safe use

LEXUS NX300h Owners Manu-

al_USA_M78287_en

Exhaust gas precautions

Harmful substance to the human
body is contained in exhaust gases
if inhaled.

WARNING

Exhaust gases contain harmful carbon

monoxide (CO), which is colorless and

odorless. Observe the following precau-

tions.

Failure to do so may cause exhaust gases

to enter the vehicle and may lead to an

accident caused by light-headedness, or

may lead to death or a serious health

hazard.

■

Important points while driving

●

Keep the back door closed.

●

If you smell exhaust gases in the vehi-

cle even when the back door is closed,

open the windows and have the vehi-

cle inspected at your Lexus dealer as

soon as possible.

■

When parking

●

If the vehicle is in a poorly ventilated

area or a closed area, such as a

garage, stop the hybrid system.

●

Do not leave the vehicle with the

hybrid system on for a long time. If

such a situation cannot be avoided,

park the vehicle in an open space and

ensure that exhaust fumes do not enter

the vehicle interior.

●

Do not leave the hybrid system operat-

ing in an area with snow build-up, or

where it is snowing. If snowbanks build

up around the vehicle while the hybrid

system is operating, exhaust gases

may collect and enter the vehicle.

■

Exhaust pipe

The exhaust system needs to be checked

periodically. If there is a hole or crack

caused by corrosion, damage to a joint

or abnormal exhaust noise, be sure to

have the vehicle inspected and repaired

by your Lexus dealer.

1-2. Hybrid system

LEXUS NX300h Owners Manu-

al_USA_M78287_en

For safety and security

1-2.Hybrid system

The illustration is an example for explanation and may differ from the actual item.

Gasoline engine
Front electric motor (traction motor)
Rear electric motor (traction motor)

■

When stopped/during start off

The gasoline engine stops

when the

vehicle is stopped. During start off, the
electric motor (traction motor) drives
the vehicle. At slow speeds or when
traveling down a gentle slope, the

engine is stopped

and the electric

motor (traction motor) is used.
When the shift lever is in N, the hybrid
battery (traction battery) is not being
charged. When the vehicle is stopped,
always put the shift lever to P.

Hybrid system features

Your vehicle is a hybrid vehicle. It has characteristics different from conven-
tional vehicles. Be sure you are closely familiar with the characteristics of your
vehicle, and operate it with care.
The hybrid system combines the use of a gasoline engine and an electric
motor (traction motor) according to driving conditions, improving fuel effi-
ciency and reducing exhaust emissions.

System components

A
B
C

1-2. Hybrid system

LEXUS NX300h Owners Manu-

al_USA_M78287_en

Also, even in heavy traffic conditions,
drive the vehicle in D or S.

: When the hybrid battery (traction bat-

tery) requires charging or the engine is
warming up, etc., the gasoline engine will
not automatically stop. (

P.62)

■

During normal driving

The gasoline engine is predominantly
used. The electric motor (traction
motor) charges the hybrid battery
(traction battery) as necessary.

■

When accelerating sharply

When the accelerator pedal is
depressed heavily, the power of the
hybrid battery (traction battery) is
added to that of the gasoline engine via
the electric motor (traction motor).

■

When braking (regenerative brak-
ing)

The wheels operate the electric motor
(traction motor) as a power generator,
and the hybrid battery (traction bat-
tery) is charged.

■

Regenerative braking

In the following situations, kinetic energy is

converted to electric energy and decelera-

tion force can be obtained in conjunction

with the recharging of the hybrid battery

(traction battery).

●

The accelerator pedal is released while

driving with the shift lever in D or S.

●

The brake pedal is depressed while driv-

ing with the shift lever in D or S.

■

EV indicator

The EV indicator comes on when the vehi-

cle is driven using only the electric motor

(traction motor) or the gasoline engine is

stopped.

■

Conditions in which the gasoline engine

may not stop

The gasoline engine starts and stops auto-

matically. However, it may not stop auto-
matically in the following conditions

●

During gasoline engine warm-up

●

During hybrid battery (traction battery)

charging

●

When the temperature of the hybrid bat-

tery (traction battery) is high or low

●

When the heater is switched on

: Depending on the circumstances, the

gasoline engine may also not stop auto-
matically in other situations.

■

Charging the hybrid battery (traction

battery)

As the gasoline engine charges the hybrid

battery (traction battery), the battery does

not need to be charged from an outside

source. However, if the vehicle is left parked

for a long time the hybrid battery (traction

battery) will slowly discharge. For this rea-

son, be sure to drive the vehicle at least

once every few months for at least 30 min-

utes or 10 miles (16 km). If the hybrid bat-

tery (traction battery) becomes fully

discharged and you are unable to start the

hybrid system, contact your Lexus dealer.

■

Charging the 12-volt battery

P.394

■

After the 12-volt battery has discharged

or when the terminal has been removed

and installed during exchange, etc.

The gasoline engine may not stop even if

the vehicle is being driven by the hybrid bat-

tery (traction battery). If this continues for a

few days, contact your Lexus dealer.

1-2. Hybrid system

LEXUS NX300h Owners Manu-

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For safety and security

■

Sounds and vibrations specific to a

hybrid vehicle

There may be no engine sound or vibration

even though the vehicle is able to move with

the “READY” indicator is illuminated. For

safety, make sure to shift the shift lever to P

and apply the parking brake when parked.
The following sounds or vibrations may

occur when the hybrid system is operating

and are not a malfunction:

●

Motor sounds may be heard from the

engine compartment.

●

Sounds may be heard from the hybrid

battery (traction battery) behind the rear

seats when the hybrid system starts or

stops.

●

Relay operating sounds such as a snap or

soft clank will be emitted from the hybrid

battery (traction battery), behind the rear

seats, when the hybrid system is started

or stopped.

●

Sounds from the hybrid system may be

heard when the back door is open.

●

Sounds may be heard from the transmis-

sion when the gasoline engine starts or

stops, when driving at low speeds, or

during idling.

●

Engine sounds may be heard when

accelerating sharply.

●

Sounds may be heard due to regenera-

tive braking when the brake pedal is

depressed or as the accelerator pedal is

released.

●

Vibration may be felt when the gasoline

engine starts or stops.

●

Cooling fan sounds may be heard from

the air intake vents under the rear seats.

■

Maintenance, repair, recycling, and dis-

posal

Contact your Lexus dealer regarding main-

tenance, repair, recycling and disposal. Do

not dispose of the vehicle yourself.

■

Customization

Settings (e.g. on/off operation of the EV

indicator) can be changed.

(Customizable features:

P.421)

When driving with the gasoline engine
stopped, a sound, which changes in
accordance with the driving speed, will
be played in order to warn people
nearby of the vehicle’s approach. The
sound will stop when the vehicle speed
exceeds approximately 15 mph (25
km/h).

■

Vehicle proximity notification system

In the following cases, the vehicle proximity

notification system may be difficult for sur-

rounding people to hear.

●

In very noisy areas

●

In the wind or the rain

Also, as the vehicle proximity notification

system is installed on the front of the vehicle,

it may be more difficult to hear from the rear

of the vehicle compared to the front.

Vehicle proximity notification
system

1-2. Hybrid system

LEXUS NX300h Owners Manu-

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For safety and security

(

P.371) go off. If there is only a small

amount of fuel, the hybrid system may not

be able to start. (The standard amount of

fuel is about 2.7 gal. [10.1 L, 2.2 Imp.gal.],

when the vehicle is on a level surface. This

value may vary when the vehicle is on a

slope. Add extra fuel when the vehicle is

inclined.)

■

Electromagnetic waves

●

High voltage parts and cables on hybrid

vehicles incorporate electromagnetic

shielding, and therefore emit approxi-

mately the same amount of electromag-

netic waves as conventional gasoline

powered vehicles or home electronic

appliances.

●

Your vehicle may cause sound interfer-

ence in some third party-produced radio

parts.

■

Hybrid battery (traction battery)

The hybrid battery (traction battery) has a

limited service life. The lifespan of the

hybrid battery (traction battery) can

change in accordance with driving style and

driving conditions.

WARNING

■

High voltage precautions

This vehicle has high voltage DC and AC

systems as well as a 12-volt system. DC

and AC high voltage is very dangerous

and can cause severe burns and electric

shock that may result in death or serious

injury.

●

Never touch, disassemble, remove or

replace the high voltage parts, cables

or their connectors.

●

The hybrid system will become hot

after starting as the system uses high

voltage. Be careful of both the high

voltage and the high temperature, and

always obey the warning labels

attached to the vehicle.

●

Never try to open the service plug

access hole located underneath the

rear seats. The service plug is used

only when the vehicle is serviced and is

subject to high voltage.

■

Road accident cautions

Observe the following precautions to

reduce the risk of death or serious injury:

●

Pull your vehicle off the road, shift the

shift lever to P, apply the parking brake,

and turn the hybrid system off.

●

Do not touch the high voltage parts,

cables and connectors.

●

If electric wires are exposed inside or

outside your vehicle, an electric shock

may occur. Never touch exposed elec-

tric wires.

●

If a fluid leak occurs, do not touch the

fluid as it may be strong alkaline elec-

trolyte from the hybrid battery (trac-

tion battery). If it comes into contact

with your skin or eyes, wash it off

immediately with a large amount of

water or, if possible, boric acid solu-

tion. Seek immediate medical atten-

tion.

●

If a fire occurs in the hybrid vehicle,

leave the vehicle as soon as possible.

Never use a fire extinguisher that is not

meant for electric fires. Using even a

small amount of water may be danger-

ous.

1-2. Hybrid system

LEXUS NX300h Owners Manu-

al_USA_M78287_en

The cooling air intake and discharge
vents for the hybrid battery (traction
battery) are located under the rear
seats and between the rear seats and
deck board, respectively. If the air
intake vents are blocked, it could lead
to a reduction in hybrid battery (trac-
tion battery) output.

The hybrid battery (traction battery) out-
put will not be reduced, even if the space
between the upper part of the air dis-
charge vents on the back of the rear seat
and deck board is blocked with luggage,
etc.

WARNING

●

If your vehicle needs to be towed, do

so with four wheels raised. If the

wheels connected to the electric

motor (traction motor) are on the

ground when towing, the motor may

continue to generate electricity. This

may cause a fire. (

P.362)

●

Carefully inspect the ground under the

vehicle. If you find that liquid has

leaked onto the ground, the fuel sys-

tem may have been damaged. Leave

the vehicle as soon as possible.

■

Hybrid battery (traction battery)

●

Never resell, hand over or modify the

hybrid battery. To prevent accidents,

hybrid batteries that have been

removed from a disposed vehicle are

collected through Lexus dealers. Do

not dispose of the battery yourself.

Unless the battery is properly collected,
the following may occur, resulting in
death or serious injury:
• The hybrid battery may be illegally dis-

posed of or dumped, and it is hazard-

ous to the environment or someone

may touch a high voltage part, result-

ing in an electric shock.

• The hybrid battery is intended to be

used exclusively with your hybrid vehi-

cle. If the hybrid battery is used outside

of your vehicle or modified in any way,

accidents such as electric shock, heat

generation, smoke generation, an

explosion and electrolyte leakage may

occur.

When reselling or handing over your

vehicle, the possibility of an accident is

extremely high because the person

receiving the vehicle may not be aware

of these dangers.

●

If your vehicle is disposed of without

the hybrid battery having been

removed, there is a danger of serious

electric shock if high voltage parts,

cables and their connectors are

touched. In the event that your vehicle

must be disposed of, the hybrid battery

must be disposed of by your Lexus

dealer or a qualified service shop. If

the hybrid battery is not disposed of

properly, it may cause electric shock

that can result in death or serious

injury.

NOTICE

■

Hybrid battery (traction battery)

Do not carry large amounts of water

such as water cooler bottles in the vehi-

cle. If water spills onto the hybrid battery

(traction battery), the battery may be

damaged.

Have the vehicle inspected by your

Lexus dealer.

Hybrid battery (traction bat-
tery) air intake and discharge
vents

1-2. Hybrid system

LEXUS NX300h Owners Manu-

al_USA_M78287_en

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-infor-

mation display, clean the air intake

vents (

P. 316). If the message is still

displayed 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 remains 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

1-3. Theft deterrent system

LEXUS NX300h Owners Manu-

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For safety and security

1-3.Theft deterrent system

The indicator light flashes after the
power switch has been turned off to
indicate that the system is operating.
The indicator light stops flashing after
the power switch has been turned to

ACCESSORY or ON mode to indi-
cate that the system has been can-
celed.

■

System maintenance

The vehicle has a maintenance-free type

immobilizer system.

■

Conditions that may cause the system to

malfunction

●

If the grip portion of the key is in contact

with a metallic object

●

If the key is in close proximity to or touch-

ing a key registered to the security sys-

tem (key with a built-in transponder chip)

of another vehicle

■

Certification for the immobilizer system



For vehicles sold in the U.S.A.

Immobilizer system

The vehicle’s keys have built-in tran-
sponder chips that prevent the
hybrid system from starting if a key
has not been previously registered
in the vehicle’s on-board computer.
Never leave the keys inside the
vehicle when you leave the vehicle.
This system is designed to help pre-
vent vehicle theft but does not guar-
antee absolute security against all
vehicle thefts.

Operating the system

1-3. Theft deterrent system

LEXUS NX300h Owners Manu-

al_USA_M78287_en

For safety and security

■

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 power switch to ACCES-

SORY or ON mode, or start the
hybrid system. (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 12-volt battery is recharged or

replaced when the vehicle is locked.

(

P.394)

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

1-3. Theft deterrent system

LEXUS NX300h Owners Manu-

al_USA_M78287_en

■

Alarm-operated door lock

In the following cases, depending on the sit-

uation, the door may automatically lock to

prevent improper entry into the vehicle:

●

When a person remaining in the vehicle

unlocks the door and the alarm is acti-

vated.

●

While the alarm is activated, a person

remaining in the vehicle unlocks the door.

●

When recharging or replacing the 12-volt

battery.

NOTICE

■

To ensure the system operates cor-

rectly

Do not modify or remove the system. If

modified or removed, the proper opera-

tion of the system cannot be guaranteed.

2-1. Instrument cluster

LEXUS NX300h Owners Manu-

al_USA_M78287_en

Vehi

cle

status

inform

ati

on a

nd i

ndic
ators

Warning lights inform the driver of mal-
functions in any of the vehicle’s sys-
tems.

: These lights turn on when the power

switch is turned to ON mode to indi-

Warning lights

(U.S.A.)

Brake system warning light

(

P.367)

(Red)

(Canada)

Brake system warning light

(

P.367)

Charging system warning
light

(

P.367)

Output control warning light

(

P.367, 377)

Low engine oil pressure warn-
ing light

(

P.368)

High coolant temperature
warning light

(

P.368)

(Yellow)

Brake system warning light

(

P.368)

(U.S.A.)

Malfunction indicator lamp

(

P.368)

(Canada)

Malfunction indicator lamp

(

P.368)

SRS warning light

(

P.369)

(U.S.A.)

ABS warning light

(

P.369)

(Canada)

ABS warning light

(

P.369)

(Yellow)

Electric power steering sys-
tem warning light

(

P.369)

(Red)

Electric power steering sys-
tem warning light

(

P.369)

PCS warning light

(

P.369)

(Orange)

LDA indicator

(

P.370)

(if equipped)

PKSB OFF indicator

*1, 3

(

P.370)

Slip indicator light

(

P.370)

Brake hold operated indica-
tor

*1, 3

(

P.370)

(U.S.A.)

Parking brake indicator

(

P.371)

(Canada)

Parking brake indicator

(

P.371)

Low fuel level warning light
(

P.371)

Driver’s and front passenger’s
seat belt reminder light
(

P.371)

Rear passengers’ seat belt
reminder light

(

P.372)

Master warning light

(

P.372)

Tire pressure warning light

(

P.372)

Brake Override System/
Drive-Start Control warning
light

(

P.373)

LEXUS NX 300H (2019 year). Instruction - part 4