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LEXUS NX 300H (2019 year). Instruction - part 2

1-1. For safe use

LEXUS NX300h Owners Manu-

al_USA_M78287_en

■

Child seat belt usage

The seat belts of your vehicle were princi-

pally designed for persons of adult size.

●

Use a child restraint system appropriate

for the child, until the child becomes large

enough to properly wear the vehicle’s

seat belt. (

P.47)

●

When the child becomes large enough to

properly wear the vehicle’s seat belt, fol-

low the instructions regarding seat belt

usage. (

P.26)

■

Seat belt extender

If your seat belts cannot be fastened

securely because they are not long enough,

a personalized seat belt extender is avail-

able from your Lexus dealer free of charge.

To fasten the seat belt, push the
plate into the buckle until a click
sound is heard.

To release the seat belt, press the
release button .

■

Emergency locking retractor (ELR)

The retractor will lock the belt during a sud-

den stop or on impact. It may also lock if you

lean forward too quickly. A slow, easy

motion will allow the belt to extend so that

you can move around fully.

■

Automatic locking retractor (ALR)

When a passenger’s shoulder belt is com-

WARNING

■

Using a seat belt extender

Observe the following precautions to

reduce the risk of injury in the event of

sudden braking, sudden swerving or an

accident.

Failure to do so may cause death or seri-

ous injury.

●

Do not wear the seat belt extender if

you can fasten the seat belt without the

extender.

●

Do not use the seat belt extender

when installing a child restraint system

because the belt will not securely hold

the child restraint system, increasing

the risk of death or serious injury in the

event of an accident.

●

The personalized extender may not be

safe on another vehicle, when used by

another person, or at a different seat-

ing position other than the one origi-

nally intended.

NOTICE

■

When releasing a seat belt extender

Press on the buckle release button on the

extender, not on the seat belt, then,

release the extender from the seat belt

buckle.
This helps prevent damage to the vehicle

interior and the extender itself.

Fastening and releasing the seat
belt (except for the rear center
seat)

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pletely extended and then retracted even

slightly, the belt is locked in that position and

cannot be extended. This feature is used to

hold the child restraint system (CRS) firmly.

To free the belt again, fully retract the belt

and then pull the belt out once more.

Take out the plate.

Plate A
Plate B

When fixing the belt, in the order of
plate A and then plate B, insert the

plate into the buckle until a clicking
sound is heard.

Plate A
Plate B
Buckle

Fastening the seat belt (for the
rear center seat)

A
B

WARNING

■

When using the rear center seat belt

Do not use the rear center seat belt with

either buckle released. Fastening only

one of the buckles may result in death or

serious injury in case of sudden braking

or a collision.

A
B
C

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To release the hooked buckle, push
the buckle release button .

Insert the mechanical key
(

P.100) or plate B into the notch

of buckle and remove the belt.

Retract the belt slowly when releasing and

stowing the seat belt.

Mechanical key
Plate B
Buckle

Stow in the cover in the order of
plate B and then plate A.

In order to securely fix it, firmly insert it to

the back.

Plate A
Plate B

Stow the seat belt buckle in the
pockets.

■

Emergency locking retractor (ELR)

The retractor will lock the belt during a sud-

den stop or on impact. It may also lock if you

lean forward too quickly. A slow, easy

motion will allow the belt to extend so that

you can move around fully.

■

Automatic locking retractor (ALR)

When a passenger’s shoulder belt is com-

pletely extended and then retracted even

slightly, the belt is locked in that position and

Releasing and stowing the seat
belt (for the rear center seat)

A
B
C

A
B

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cannot be extended. This feature is used to

hold the child restraint system (CRS) firmly.

To free the belt again, fully retract the belt

and then pull the belt out once more.

Push the seat belt shoulder anchor
down while pressing the release
button .

Push the seat belt shoulder anchor
up.

Move the height adjuster up and down as
needed until you hear a click.

The pretensioners help the seat belts to
quickly restrain the occupants by
retracting the seat belts when the vehi-

cle is subjected to certain types of
severe frontal or side collision or a
vehicle rollover.

The pretensioners do not activate in the
event of a minor frontal impact, a minor
side impact or a rear impact.

■

Replacing the belt after the preten-

sioner has been activated

If the vehicle is involved in multiple colli-

sions, the pretensioner will activate for the

first collision, but will not activate for the

second or subsequent collisions.

Adjusting the seat belt shoulder
anchor height (front seats)

WARNING

■

Adjustable shoulder anchor

Always make sure the shoulder belt is

positioned across the center of your

shoulder. The belt should be kept away

from your neck, but not falling off your

shoulder. Failure to do so could reduce

the amount of protection in an accident

and cause death or serious injuries in the

event of a sudden stop, sudden swerve or

accident.

Seat belt pretensioners (front
seats)

WARNING

■

Seat belt pretensioners

Observe the following precautions to

reduce the risk of injury in the event of

sudden braking, sudden swerving or an

accident.

Failure to do so may cause death or seri-

ous injury.

●

Do not place anything, such as a cush-

ion, on the front passenger’s seat.

Doing so will disperse the passenger’s

weight, which prevents the sensor

from detecting the passenger’s weight

properly. As a result, the seat belt pre-

tensioner for the front passenger’s seat

may not activate in the event of a colli-

sion.

●

If the pretensioner has activated, the

SRS warning light will come on. In that

case, the seat belt cannot be used

again and must be replaced at your

Lexus dealer.

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Location of the SRS airbags



SRS front airbags

SRS driver airbag/front passenger airbag

Can help protect the head and chest of the driver and front passenger from impact with
interior components

SRS knee airbag

Can help provide driver protection

SRS seat cushion airbag

Can help restrain the front passenger.



SRS side and curtain shield airbags

SRS side airbags

Can help protect the torso of the front seat occupants

SRS curtain shield airbags

SRS airbags

The SRS airbags inflate when the vehicle is subjected to certain types of
severe impacts that may cause significant injury to the occupants. They work
together with the seat belts to help reduce the risk of death or serious injury.

SRS airbag system

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• Can help protect primarily the head of occupants in the outer seats
• Can help prevent the occupants from being thrown from the vehicle in the event of vehi-

cle rollover

■

SRS airbag system components

Front passenger airbag
“AIR BAG ON” and “AIR BAG OFF” indicator lights
Side airbags
Curtain shield airbags
Side impact sensors (rear)
SRS warning light
Front passenger occupant classification system (ECU and sensors)
Driver airbag
Side impact sensors (front door)
Driver’s seat belt pretensioner
Front passenger’s seat belt pretensioner and force limiter
Passenger seat cushion airbag
Driver’s seat position sensor
Driver knee airbag
Driver’s seat belt buckle switch
Front passenger’s seat belt buckle switch
Front impact sensors
Airbag sensor assembly

A
B
C
D

E
F

N
O

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Your vehicle is equipped with ADVANCED AIRBAGS designed based on the US motor
vehicle safety standards (FMVSS208). The airbag sensor assembly (ECU) controls airbag
deployment based on information obtained from the sensors etc. shown in the system com-
ponents diagram above. This information includes crash severity and occupant information.
As the airbags deploy, a chemical reaction in the inflators quickly fills the airbags with non-
toxic gas to help restrain the motion of the occupants.

■

If the SRS airbags deploy (inflate)

●

Slight abrasions, burns, bruising, etc., may

be sustained from SRS airbags, due to the

extremely high speed deployment (infla-

tion) by hot gases.

●

A loud noise and white powder will be

emitted.

●

Parts of the airbag module (steering

wheel hub, airbag cover and inflator) as

well as the front seats, parts of the front

and rear pillars, and roof side rails, may

be hot for several minutes. The airbag

itself may also be hot.

●

The windshield may crack.

●

For Lexus Enform Safety Connect sub-

scribers, if the SRS airbags deploy or in

the event of a severe rear-end collision,

the system is designed to send an emer-

gency call to the response center, notify-

ing them of the vehicle’s location (without

needing to push the “SOS” button) and

an agent will attempt to speak with the

occupants to ascertain the level of emer-

gency and assistance required. If the

occupants are unable to communicate,

the agent automatically treats the call as

an emergency and helps to dispatch the

necessary emergency services.

(

P.304)

■

SRS airbag deployment conditions (SRS

front airbags)

●

The SRS front airbags will deploy in the

event of an impact that exceeds the set

threshold level (the level of force corre-

sponding to an approximately 12-18 mph

[20-30 km/h] frontal collision with a

fixed wall that does not move or deform).

However, this threshold velocity will be con-

siderably higher in the following situations:

• If the vehicle strikes an object, such as a

parked vehicle or sign pole, which can

move or deform on impact

• If the vehicle is involved in an underride

collision, such as a collision in which the

front of the vehicle underrides, or goes

under, the bed of a truck

●

Depending on the type of collision, it is

possible that only the seat belt preten-

sioners will activate.

●

The SRS front airbags for the front pas-

senger will not activate if there is no pas-

senger sitting in the front passenger seat.

However, the SRS front airbags for the

front passenger may deploy if luggage is

put in the seat, even if the seat is unoccu-

pied. (

P.41)

●

The SRS seat cushion airbag on the front

passenger seat will not operate if the

occupant is not wearing a seat belt.

■

SRS airbag deployment conditions (SRS

side and curtain shield airbags)

●

The SRS side and curtain shield airbags

will deploy in the event of an impact that

exceeds the set threshold level (the level

of force corresponding to the impact

force produced by an approximately

3300 lb. [1500 kg] vehicle colliding with

the vehicle cabin from a direction per-

pendicular to the vehicle orientation at an

approximate speed of 12 -18 mph [20 -

30 km/h]).

●

The SRS curtain shield airbags will deploy

in the event of vehicle rollover.

●

The SRS side and curtain shield airbags

may also deploy in the event of a severe

frontal collision.

■

Conditions under which the SRS air-

bags may deploy (inflate), other than a

collision

The SRS front airbags and SRS side and

curtain shield airbags may also deploy if a

serious impact occurs to the underside of

your vehicle. Some examples are shown in

the illustration.

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●

Hitting a curb, edge of pavement or hard

surface

●

Falling into or jumping over a deep hole

●

Landing hard or falling

The SRS curtain shield airbags may also

deploy under the situations shown in the

illustration.

●

The angle of vehicle tip-up is marginal.

●

The vehicle skids and hits a curb stone.

■

Types of collisions that may not deploy

the SRS airbags (SRS front airbags)

The SRS front airbags do not generally

inflate if the vehicle is involved in a side or

rear collision, if it rolls over, or if it is involved

in a low-speed frontal collision. But, when-

ever a collision of any type causes sufficient

forward deceleration of the vehicle, deploy-

ment of the SRS front airbags may occur.

●

Collision from the side

●

Collision from the rear

●

Vehicle rollover

■

Types of collisions that may not deploy

the SRS airbags (SRS side and curtain

shield airbags)

The SRS side and curtain shield airbags

may not activate if the vehicle is subjected

to a collision from the side at certain angles,

or a collision to the side of the vehicle body

other than the passenger compartment.

●

Collision from the side to the vehicle

body other than the passenger compart-

ment

●

Collision from the side at an angle

The SRS side airbags do not generally

inflate if the vehicle is involved in a rear colli-

sion, if it rolls over, or if it is involved in a low-

speed side or low-speed frontal collision.

●

Collision from the rear

●

Vehicle rollover

The SRS curtain shield airbags do not gen-

erally inflate if the vehicle is involved in a

rear collision, if it pitches end over end, or if

it is involved in a low-speed side or low-

speed frontal collision.

●

Collision from the rear

●

Pitching end over end

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When to contact your Lexus dealer

In the following cases, the vehicle will

require inspection and/or repair. Contact

your Lexus dealer as soon as possible.

●

Any of the SRS airbags have been

inflated.

●

The front of the vehicle is damaged or

deformed, or was involved in an accident

that was not severe enough to cause the

SRS front airbags to inflate.

●

A portion of a door or its surrounding

area is damaged or deformed, or the

vehicle was involved in an accident that

was not severe enough to cause the

SRS side and curtain shield airbags to

inflate.

●

The pad section of the steering wheel,

dashboard near the front passenger air-

bag or lower portion of the instrument

panel is scratched, cracked, or otherwise

damaged.

●

The front passenger’s seat cushion sur-

face is scratched, cracked, or otherwise

damaged.

●

The surface of the seats with the side air-

bag is scratched, cracked, or otherwise

damaged.

●

The portion of the front pillars, rear pillars

or roof side rail garnishes (padding) con-

taining the curtain shield airbags inside is

scratched, cracked, or otherwise dam-

aged.

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WARNING

■

SRS airbag precautions

Observe the following precautions

regarding the SRS airbags.

Failure to do so may cause death or seri-

ous injury.

●

The driver and all passengers in the

vehicle must wear their seat belts

properly.

The SRS airbags are supplemental

devices to be used with the seat belts.

●

The SRS driver airbag deploys with

considerable force, and can cause

death or serious injury especially if the

driver is very close to the airbag. The

National Highway Traffic Safety

Administration (NHTSA) advises:

Since the risk zone for the driver’s air-

bag is the first 2 - 3 in. (50 - 75 mm) of

inflation, placing yourself 10 in. (250

mm) from your driver airbag provides

you with a clear margin of safety. This

distance is measured from the center

of the steering wheel to your breast-

bone. If you sit less than 10 in. (250

mm) away now, you can change your

driving position in several ways:

• Move your seat to the rear as far as

you can while still reaching the pedals

comfortably.

• Slightly recline the back of the seat.

Although vehicle designs vary, many

drivers can achieve the 10 in. (250

mm) distance, even with the driver seat

all the way forward, simply by reclining

the back of the seat somewhat. If

reclining the back of your seat makes it

hard to see the road, raise yourself by

using a firm, non-slippery cushion, or

raise the seat if your vehicle has that

feature.

• If your steering wheel is adjustable, tilt

it downward. This points the airbag

toward your chest instead of your head

and neck.

The seat should be adjusted as recom-
mended by NHTSA above, while still
maintaining control of the foot pedals,
steering wheel, and your view of the
instrument panel controls.

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WARNING

●

If the seat belt extender has been con-

nected to the front seat belt buckles

but the seat belt extender has not also

been fastened to the latch plate of the

seat belt, the SRS front airbags will

judge that the driver and front passen-

ger are wearing the seat belt even

though the seat belt has not been con-

nected. In this case, the SRS front air-

bags may not activate correctly in a

collision, resulting in death or serious

injury in the event of a collision. Be

sure to wear the seat belt with the seat

belt extender.

●

The SRS front passenger airbag also

deploys with considerable force, and

can cause death or serious injury

especially if the front passenger is very

close to the airbag. The front passen-

ger seat should be as far from the air-

bag as possible with the seatback

adjusted, so the front passenger sits

upright.

●

Improperly seated and/or restrained

infants and children can be killed or

seriously injured by a deploying airbag.

An infant or child who is too small to

use a seat belt should be properly

secured using a child restraint system.

Lexus strongly recommends that all

infants and children be placed in the

rear seats of the vehicle and properly

restrained. The rear seats are safer for

infants and children than the front pas-

senger seat. (

P.47)

●

Do not sit on the edge of the seat or

lean against the dashboard.

●

Do not allow a child to stand in front of

the SRS front passenger airbag unit or

sit on the knees of a front passenger.

●

Do not allow the front seat occupants

to hold items on their knees.

●

Do not lean against the door, the roof

side rail or the front, side and rear pil-

lars.

●

Do not allow anyone to kneel on the

passenger seat toward the door or put

their head or hands outside the vehi-

cle.

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WARNING

●

Do not attach anything to or lean any-

thing against areas such as the dash-

board, steering wheel pad and lower

portion of the instrument panel.

These items can become projectiles

when the SRS driver, front passenger

and knee airbags deploy.

●

Do not attach anything to areas such

as a door, windshield glass, side door

glass, front or rear pillar, roof side rail

and assist grip.

●

Do not hang coat hangers or other

hard objects on the coat hooks. All of

these items could become projectiles

and may cause death or serious injury,

should the SRS curtain shield airbags

deploy.

●

If a vinyl cover is put on the area where

the SRS knee airbag will deploy, be

sure to remove it.

●

Do not use seat accessories which

cover the parts where the SRS side air-

bags and SRS seat cushion airbag

inflate as they may interfere with infla-

tion of the SRS airbags. Such accesso-

ries may prevent the side airbags and

SRS seat cushion airbag from activat-

ing correctly, disable the system or

cause the side airbags and SRS seat

cushion airbag to inflate accidentally,

resulting in death or serious injury.

●

Do not strike or apply significant levels

of force to the area of the SRS airbag

components.

Doing so can cause the SRS airbags to

malfunction.

●

Do not touch any of the component

parts immediately after the SRS air-

bags have deployed (inflated) as they

may be hot.

●

If breathing becomes difficult after the

SRS airbags have deployed, open a

door or window to allow fresh air in, or

leave the vehicle if it is safe to do so.

Wash off any residue as soon as possi-

ble to prevent skin irritation.

●

If the areas where the SRS airbags are

stored, such as the steering wheel pad

and front and rear pillar garnishes, are

damaged or cracked, have them

replaced by your Lexus dealer.

●

Do not place anything, such as a cush-

ion, on the front passenger’s seat.

Doing so will disperse the passenger’s

weight, which prevents the sensor

from detecting the passenger’s weight

properly. As a result, the SRS front air-

bags for the front passenger may not

deploy in the event of a collision.

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WARNING

■

Modification and disposal of SRS air-

bag system components

Do not dispose of your vehicle or per-

form any of the following modifications

without consulting your Lexus dealer.

The SRS airbags may malfunction or

deploy (inflate) accidentally, causing

death or serious injury.

●

Installation, removal, disassembly and

repair of the SRS airbags

●

Repairs, modifications, removal or

replacement of the steering wheel,

instrument panel, dashboard, seats or

seat upholstery, front, side and rear pil-

lars or roof side rails

●

Repairs or modifications of the front

fender, front bumper, or side of the

occupant compartment

●

Installation of a grille guard (bull bars,

kangaroo bar, etc.), snow plows,

winches or roof luggage carrier

●

Modifications to the vehicle’s suspen-

sion system

●

Installation of electronic devices such

as mobile two-way radios and CD

players

●

Modifications to your vehicle for a per-

son with a physical disability

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SRS warning light
Front passenger’s seat belt reminder light



For the U.S.A.

“AIR BAG OFF” indicator light
“AIR BAG ON” indicator light



For Canada

“AIR BAG OFF” indicator light
“AIR BAG ON” indicator light

Front passenger occupant classification system

Your vehicle is equipped with a front passenger occupant classification sys-
tem. This system detects the conditions of the front passenger seat and acti-
vates or deactivates the devices for the front passenger.

System components

A
B

C
D

E
F

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■

Adult

■

Child

Condition and operation in the front passenger occupant classification
system

Indicator/warning

light

“AIR BAG ON” and “AIR BAG OFF” indica-

tor lights

“AIR BAG ON”

SRS warning light

Off

Front passenger’s seat belt reminder light

Off

or flashing

Devices

Front passenger airbag

Activated

Side airbag on the front passenger seat

Curtain shield airbag in the front passenger

side

Seat cushion airbag in the front passenger

side

Activated

or deac-

tivated

Front passenger’s seat belt pretensioner and

force limiter

Activated

Indicator/warning

light

“AIR BAG ON” and “AIR BAG OFF” indica-

tor lights

“AIR BAG OFF” or

“AIR BAG ON”

SRS warning light

Off

Front passenger’s seat belt reminder light

Off

or flashing

Devices

Front passenger airbag

Deactivated or acti-

vated

Side airbag on the front passenger seat

Activated

Curtain shield airbag in the front passenger

side

Seat cushion airbag in the front passenger

side

Deactivated or acti-

vated

*2, 4

Front passenger’s seat belt pretensioner and

force limiter

Activated

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■

Child restraint system with infant

■

Unoccupied

Indicator/warning

light

“AIR BAG ON” and “AIR BAG OFF” indica-

tor lights

“AIR BAG OFF”

SRS warning light

Off

Front passenger’s seat belt reminder light

Off

or flashing

Devices

Front passenger airbag

Deactivated

Side airbag on the front passenger seat

Activated

Curtain shield airbag in the front passenger

side

Seat cushion airbag in the front passenger

side

Deactivated

Front passenger’s seat belt pretensioner and

force limiter

Activated

Indicator/warning

light

“AIR BAG ON” and “AIR BAG OFF” indica-

tor lights

“AIR BAG OFF”

SRS warning light

Off

Front passenger’s seat belt reminder light

Devices

Front passenger airbag

Deactivated

Side airbag on the front passenger seat

Activated

Curtain shield airbag in the front passenger

side

Seat cushion airbag in the front passenger

side

Deactivated

Front passenger’s seat belt pretensioner and

force limiter

Activated

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