Content .. 21 22 23 24 ..

Lexus NX300h (2021 year). Manual in english - page 23

387

7-2. Steps to take in an emergency

When trouble

ari

ses



Vehicle pulls heavily to one side
when driving on a level road



Loss of brake effectiveness, spongy
feeling, pedal almost touches the
floor

388

7-2. Steps to take in an emergency

■

Brake system warning light (warning buzzer)

■

Charging system warning light

: This light illuminates on the multi-information display.

■

Output control warning light

(warning buzzer)

: This light illuminates on the multi-information display.

If a warning light turns on or a warning buzzer sounds

Calmly perform the following actions if any of the warning lights comes on or
flashes. If a light comes on or flashes, but then goes off, this does not necessar-
ily indicate a malfunction in the system. However, if this continues to occur,
have the vehicle inspected by your Lexus dealer.

Actions to the warning lights or warning buzzers

Warning light

Details/Actions

(U.S.A.)

(Red)

(Canada)

Indicates that:



The brake fluid level is low; or



The brake system is malfunctioning



Immediately stop the vehicle in a safe place and con-
tact your Lexus dealer. Continuing to drive the vehicle
may be dangerous.

Warning light

Details/Actions

Indicates a malfunction in the vehicle’s charging system



Immediately stop the vehicle in a safe place and con-
tact your Lexus dealer. Continuing to drive the vehicle
may be dangerous.

Warning light

Details/Actions

Indicates the hybrid system has overheated



Stop the vehicle in a safe place. Handling method
(



P.420)

389

7-2. Steps to take in an emergency

When trouble

ari

ses

■

Low engine oil pressure warning light

(warning buzzer)

: This light illuminates on the multi-information display.

■

High coolant temperature warning light

(warning buzzer)

: This light illuminates on the multi-information display.

■

Brake system warning light

■

Malfunction indicator lamp

Warning light

Details/Actions

Indicates that the engine oil pressure is too low



Immediately stop the vehicle in a safe place and con-
tact your Lexus dealer. Continuing to drive the vehicle
may be dangerous.

Warning light

Details/Actions

Indicates that the engine is overheating



Immediately stop the vehicle in a safe place. Continu-
ing to drive the vehicle may be dangerous.
Handling method (



P.418)

Warning light

Details/Actions

(Yellow)

Indicates a malfunction in:



The regenerative braking system;



The electronically controlled brake system; or



The electric parking brake



Have the vehicle inspected by your Lexus dealer
immediately.

Warning light

Details/Actions

(U.S.A.)

(Canada)

Indicates a malfunction in:



The hybrid system;



The electronic engine control system;



The electronic throttle control system; or



The emission control system



Have the vehicle inspected by your Lexus dealer
immediately.

390

7-2. Steps to take in an emergency

■

SRS warning light

■

ABS warning light

■

Electric power steering system warning light (warning buzzer)

Warning light

Details/Actions

Indicates a malfunction in:



The SRS airbag system;



The front passenger occupant classification system; or



The seat belt pretensioner system



Have the vehicle inspected by your Lexus dealer
immediately.

Warning light

Details/Actions

(U.S.A.)

(Canada)

Indicates a malfunction in:



The ABS; or



The brake assist system



Have the vehicle inspected by your Lexus dealer
immediately.

Warning light

Details/Actions

(Yellow)

(Red)

Indicates a malfunction in the EPS (Electric Power Steer-
ing) system



Have the vehicle inspected by your Lexus dealer
immediately.

391

7-2. Steps to take in an emergency

When trouble

ari

ses

■

PCS warning light

■

LTA indicator

(warning buzzer)

: This light illuminates on the multi-information display.

■

LDA indicator

(warning buzzer)

: This light illuminates on the multi-information display.

Warning light

Details/Actions

When a buzzer sounds simultaneously: Indicates a mal-
function has occurred in the PCS (Pre-Collision System).



Have the vehicle inspected by your Lexus dealer
immediately.

When a buzzer does not sound: The PCS (Pre-Collision
System) has become temporarily unavailable, corrective
action may be necessary.



Follow the instructions displayed on the multi-informa-
tion display. (



P.209, 398)

If the PCS (Pre-Collision System) or VSC (Vehicle Stability
Control) system is disabled, the PCS warning light will illu-
minate.



P.217

Warning light

Details/Actions

(Orange)

(If equipped)

Indicates a malfunction in the LTA (Lane Tracing Assist)



Follow the instructions displayed on the multi-informa-
tion display. (



P.226)

Warning light

Details/Actions

(Orange)

(If equipped)

Indicates a malfunction in the LDA (Lane Departure Alert)
with steering control



Follow the instructions displayed on the multi-informa-
tion display. (



P.234)

392

7-2. Steps to take in an emergency

■

PKSB OFF indicator (warning buzzer)

■

Slip indicator light

■

Brake hold operated indicator

■

Parking brake indicator

Warning light

Details/Actions

(Flashes)

(If equipped)

When a buzzer sounds: Indicates a malfunction in the PKSB
(Parking Support Brake) system



Have the vehicle inspected by your Lexus dealer
immediately.

When a buzzer does not sound:
Indicates that the system is temporarily unavailable, possi-
bly due to a sensor being dirty or covered with ice, etc.



Clear the dirt, etc.

Warning light

Details/Actions

Indicates a malfunction in:



The VSC system;



The TRAC system; or



The hill-start assist control system

The light will flash when the ABS, VSC or TRAC system is
operating.



Have the vehicle inspected by your Lexus dealer
immediately.

Warning light

Details/Actions

(Flashes)

Indicates a malfunction in the brake hold system



Have the vehicle inspected by your Lexus dealer
immediately.

Warning light

Details/Actions

(Flashes)

(U.S.A.)

(Flashes)

(Canada)

It is possible that the parking brake is not fully engaged or
released



Operate the parking brake switch once again.

This light comes on when the parking brake is not released.
If the light turns off after the parking brake is fully released,
the system is operating normally.

393

7-2. Steps to take in an emergency

When trouble

ari

ses

■

Low fuel level warning light

■

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

)

: Driver’s seat belt warning buzzer:

The driver’s seat belt warning buzzer sounds to alert the driver that his or her seat belt is
not fastened. Once the engine switch is turned to IGNITION ON mode, the buzzer
sounds. If the seat belt is still unfastened, the buzzer sounds intermittently for a certain
period of time after the vehicle reaches a certain speed.
Front passenger’s seat belt warning buzzer:
The front passenger’s seat belt warning buzzer sounds to alert the front passenger that
his or her seat belt is not fastened. If the seat belt is unfastened, the buzzer sounds inter-
mittently for a certain period of time after the vehicle reaches a certain speed.

■

Rear passengers’ seat belt reminder light

(warning buzzer

)

: This light illuminates on the center panel. Regardless of whether or not a rear passenger

is present, if the power switch is turned to ON mode with the rear seat belts unfastened,
this light will also illuminate for a certain period of time.

: Rear passengers’ seat belt warning buzzer:

The rear passengers’ seat belt warning buzzer sounds to alert the rear passenger that
his or her seat belt is not fastened. If the seat belt is unfastened, the buzzer sounds inter-
mittently for a certain period of time, after the seat belt is fastened and unfastened and
the vehicle reaches a certain speed.

Warning light

Details/Actions

Indicates that remaining fuel is approximately 2.2 gal. (8.4
L, 1.8 Imp.gal.) or less



Refuel the vehicle.

Warning light

Details/Actions

Warns the driver and/or front passenger to fasten their seat
belts



Fasten the seat belt.
If the front passenger’s seat is occupied, the front pas-
senger’s seat belt also needs to be fastened to make
the warning light (warning buzzer) turn off.

Warning light

Details/Actions

Warns the rear passengers to fasten their seat belts



Fasten the seat belt.

394

7-2. Steps to take in an emergency

■

Master warning light (warning buzzer)

■

Tire pressure warning light

Warning light

Details/Actions

A buzzer sounds and the warning light comes on and
flashes to indicate that the master warning system has
detected a malfunction.



P.398

Warning light

Details/Actions

When the light comes on:
Low tire inflation pressure such as



Natural causes (



P.396)



Flat tire (



P.402)



Adjust the tire inflation pressure to the specified level.
The light will turn off after a few minutes. In case the
light does not turn off even if the tire inflation pressure
is adjusted, have the system checked by your Lexus
dealer.

When the light comes on after blinking for 1 minute:
Malfunction in the tire pressure warning system (



P.396)



Have the system checked by your Lexus dealer.

395

7-2. Steps to take in an emergency

When trouble

ari

ses

■

Brake Override System/Drive-Start Control warning light

(warning buzzer)

: This light illuminates on the multi-information display.

■

SRS warning light

This warning light system monitors the air-

bag sensor assembly, front impact sensors,

side impact sensors (front door), side

impact sensors (rear), driver’s seat position

sensor, driver’s seat belt buckle switch, front

passenger occupant classification system

(ECU and sensors), “AIR BAG ON” indi-

cator light, “AIR BAG OFF” indicator light,

front passenger’s seat belt buckle switch,

driver’s seat belt pretensioner, front passen-

ger’s seat belt pretensioner and force lim-

iter, airbags, interconnecting wiring and

power sources. (



P.32)

■

Front passenger detection sensor, seat

belt reminder and warning buzzer

●

If luggage is placed on the front passen-

ger seat, the front passenger detection

sensor may cause the warning light to

flash and the warning buzzer to sound

even if a passenger is not sitting in the

seat.

●

If a cushion is placed on the seat, the sen-

sor may not detect a passenger, and the

warning light may not operate properly.

■

Electric power steering system warning

light (warning buzzer)

When the 12-volt battery charge becomes

insufficient of the voltage temporarily drops,

the electric power steering system warning

light may come on and the warning buzzer

may sound.

■

If the malfunction indicator lamp comes

on while driving

First check the following:

●

Is the fuel tank empty?

If it is, fill the fuel tank immediately.

●

Is the fuel tank cap loose?

If it is, tighten it securely.

Warning light

Details/Actions

Brake Override System

Indicates that the accelerator and brake pedals are being
depressed simultaneously, and the Brake Override System
is operating.



Release the accelerator pedal and depress the brake
pedal.

Indicates a malfunction in the Brake Override System (with
warning buzzer)



Have the vehicle inspected by your Lexus dealer
immediately.

Drive-Start Control

Indicates that the shift position was changed and Drive-
Start Control was operated while depressing the accelera-
tor pedal. (with warning buzzer)



Momentarily release the accelerator pedal.

Indicates a malfunction in the Drive-Start Control system
(with warning buzzer)



Have the vehicle inspected by your Lexus dealer
immediately.

396

7-2. Steps to take in an emergency

The light will go off after several driving

trips.

If the light does not go off even after several

trips, contact your Lexus dealer as soon as

possible.

■

When the tire pressure warning light

comes on

Inspect the appearance of the tire to check

that the tire is not punctured.

If the tire is punctured:



P.402

If the tire is not punctured:

Carry out the following procedure after the

tire temperature has lowered sufficiently.

●

Check the tire inflation pressure and

adjust to the appropriate level.

●

If the warning light does not go out even

after several minutes, check that the tire

inflation pressure is at the specified level

and carry out initialization. (



P.363)

The warning light may come on again if the

above operations are conducted without

first allowing the tire temperature to lower

sufficiently.

■

The tire pressure warning light may

come on due to natural causes

The tire pressure warning light may come

on due to natural causes such as natural air

leaks and tire inflation pressure changes

caused by temperature. In this case, adjust-

ing the tire inflation pressure will turn off the

warning light (after a few minutes).

■

When a tire is replaced with a spare tire

The compact spare tire is not equipped with

a tire pressure warning valve and transmit-

ter. If a tire goes flat, the tire pressure warn-

ing light will not turn off even though the flat

tire has been replaced with the spare tire.

Replace the spare tire with the repaired tire

and adjust the tire inflation pressure. The

tire pressure warning light will go off after a

few minutes.

■

Conditions that the tire pressure warn-

ing system may not function properly



P.359

■

If the tire pressure warning light fre-

quently comes on after blinking for 1

minute

If the tire pressure warning light frequently

comes on after blinking for 1 minute when

the power switch is turned to ON mode,

have it checked by your Lexus dealer.

■

Warning buzzer

In some cases, the buzzer may not be heard

due to being in a noisy location or audio

sound.

WARNING

■

If both the ABS and the brake system

warning lights remain on

Stop your vehicle in a safe place immedi-

ately and contact your Lexus dealer. The

vehicle will become extremely unstable

during braking, and the ABS system may

fail, which could cause an accident

resulting in death or serious injury.

■

When the electric power steering

system warning light comes on

When the light comes on yellow, the

assist to the power steering is restricted.

When the light comes on red, the assist

to the power steering is lost and handling

operations of the steering wheel become

extremely heavy. When steering wheel

operations are heavier than usual, grip

the steering wheel firmly and operate it

using more force than usual.

■

If the tire pressure warning light

comes on

Be sure to observe the following precau-

tions. Failure to do so could cause a loss

of vehicle control and result in death or

serious injury.

●

Stop your vehicle in a safe place as

soon as possible. Adjust the tire infla-

tion pressure immediately.

WARNING

●

If the tire pressure warning light comes

on even after tire inflation pressure

adjustment, it is probable that you have

a flat tire. Check the tires. If a tire is flat,

change it with the spare tire and have

the flat tire repaired by the nearest

Lexus dealer.

397

7-2. Steps to take in an emergency

When trouble

ari

ses

●

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). (If 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], you should determine

the proper tire inflation 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 warning 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.

398

7-2. Steps to take in an emergency

The warning lights and warning buzzers operate 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.

If a warning message is dis-
played

The multi-information display
shows warnings of system malfunc-
tions, incorrectly performed opera-
tions, and messages that indicate a
need for maintenance. When a
message is shown, perform the cor-
rection procedure appropriate to
the message.

Master warning light

The master warning light also comes on
or flashes in order to indicate that a mes-
sage is currently being displayed on the
multi-information display.

Multi-information display

Follow the instructions of the message
on the multi-information display.
If any of the warning messages are
shown again after the following actions
have been performed, contact your
Lexus dealer.

Messages and warnings

399

7-2. Steps to take in an emergency

When trouble

ari

ses

: 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.390)

●

Malfunction of the charging system

The charging system warning light comes

on. (



P.388)

■

If “Hybrid System Overheated Output

power reduced” 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.418

■

If “Traction Battery Needs to be Pro-

tected Refrain From the Use of N Posi-

tion” is shown

This message may be displayed when the

shift lever is in N.

As the hybrid battery (traction battery) can

not be charged when the shift lever is in N,

shift the shift lever to P when the vehicle is

stopped.

■

If “Traction Battery Needs to be Pro-

tected. Shift into P to Restart.” is shown

This message is displayed when the hybrid

battery (traction battery) charge has

become extremely low because the shift

lever has been left in N for a certain amount

of time.

When operating the vehicle, shift to P and

restart the hybrid system.

■

If “Shift to P Before Exiting Vehicle” is

shown

Message is displayed when the driver’s

door is opened without turning the power

switch to OFF with the shift lever in any

position other than P.

Shift the shift lever to P.

■

If “Shift Is in N Release Accelerator

Before Shifting” is shown

Message is displayed when the accelerator

System

warning

light

Warning buzzer

Warning

Comes



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



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

400

7-2. Steps to take in an emergency

pedal has been depressed and the shift

lever is in N. Release the accelerator pedal

and shift the shift lever to D, S or R.

■

If “Depress Brake When Vehicle Is

Stopped Hybrid System May Overheat”

is shown

Message is displayed when the accelerator

pedal is depressed to maintain the vehicle

position when stopped on a upward slope,

etc.

If this continues, the hybrid system may

overheat.

Release the accelerator pedal and depress

the brake pedal.

■

If a message that indicates the malfunc-

tion of front camera is displayed

The following systems may be suspended

until the problem shown in the message is

resolved. (



P.209, 391)

●

PCS (Pre-Collision System)

●

LTA (Lane Tracing Assist) (if equipped)

●

LDA (Lane Departure Alert with steering

control) (if equipped)

●

Automatic High Beam

●

RSA (Road Sign Assist) (if equipped)

●

Dynamic radar cruise control with full-

speed range

■

If “RSA malfunction Visit Your Dealer” is

shown

The system may be malfunctioning. Have

the vehicle inspected by your Lexus dealer.

■

If “Radar Cruise Control Unavailable

See Owner’s Manual” is shown

The dynamic radar cruise control with full-

speed range system is suspended tempo-

rarily or until the problem shown in the mes-

sage is resolved. (causes and coping

methods:



P.209)

■

If “Radar Cruise Control Unavailable” is

shown

The dynamic radar cruise control with full-

speed range system cannot be used tempo-

rarily. Use the system when it becomes

available again.

■

If “Oil Maintenance Required Soon” is

shown

Indicates that the engine oil is scheduled to

be changed. (The indicator will not work

properly unless the oil maintenance data

has been reset.)

Check the engine oil, and change if neces-

sary. After changing the engine oil, the oil

change system should be reset. (



P.350)

■

If “Oil Maintenance Required” is shown

Indicates that the engine oil should be

changed. (After the engine oil is changed

and the oil maintenance data has been

reset.)

Check and change the engine oil, and oil fil-

ter by your Lexus dealer. After changing the

engine oil, the oil change system should be

reset. (



P.350)

■

If “See Owner’s Manual” is shown

●

If the following messages are shown, fol-

lowing the instructions, accordingly.

• “Engine Coolant Temp High” (



P.418)

●

If the following messages are shown,

there may be a malfunction.

Immediately have the vehicle inspected

by your Lexus dealer.

• “Hybrid System Malfunction”

• “Check Engine”

• “Hybrid Battery System Malfunction”

• “Accelerator System Malfunction”

• “Braking Power Low”

• “Smart Access System Malfunction”

●

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-

charged” (



P.414).

: Displays for about 6 seconds

●

If “Maintenance required for Traction bat-

tery cooling parts” is shown, the filters

may be clogged, the air intake vents may

be blocked, or there may be a gap in the

duct. Therefore, perform the following

correction procedure.

• If the air intake vents of the hybrid battery

401

7-2. Steps to take in an emergency

When trouble

ari

ses

(traction battery) are dirty, perform the

procedure on P.337 to clean them.

• If the warning message is shown when

the air intake vents of the hybrid battery

(traction battery) are not dirty, have the

vehicle inspected by your Lexus dealer.

●

If the following messages are shown,

there may be a malfunction.

Immediately stop the vehicle in a safe

place and contact your Lexus dealer.

Continuing to drive the vehicle may be

dangerous.

• “Oil Pressure Low”

• “Charging System Malfunction”

■

Warning buzzer



P.396

NOTICE

■

“High Power Consumption Partial

Limit On AC/Heater Operation” is

frequently shown

There is a possible malfunction relating

to the charging system or the 12-volt bat-

tery may be deteriorating. Have the vehi-

cle inspected by your Lexus dealer.

■

“Aux Battery Low” is frequently

shown

The 12-volt battery may have deterio-

rated. As the battery may discharge in

this state when left unattended, have the

battery inspected by your Lexus dealer.

402

7-2. Steps to take in an emergency



Stop the vehicle in a safe place on a
hard, flat surface.



Set the parking brake.



Shift the shift lever to P.



Stop the hybrid system.



Turn on the emergency flashers.
(



P.380)

Jack handle

Wheel nut wrench

Towing eyelet

Spare tire

Jack

If you have a flat tire

Your vehicle is equipped with a
spare tire. The flat tire can be
replaced with the spare tire.
For details about tires:



P.357

WARNING

■

If you have a flat tire

Do not continue driving with a flat tire.

Driving even a short distance with a flat

tire can damage the tire and the wheel

beyond repair, which could result in an

accident.

Before jacking up the vehicle

Location of the spare tire, jack and tools

A
B
C
D

Content .. 21 22 23 24 ..