brake light LEXUS NX300h 2018 Owner's Guide

332 6-3. Do-it-yourself maintenance
LEXUS NX300h Owners Manu-
al_USA_OM78212U ■
Checking fluid level
The brake fluid level should be
between the “MAX” and “MIN” lines
on the tank.
■
Adding fluid
Make sure to check the fluid type and
prepare the necessary item.
 Fluid type FMVSS No.116 DOT 3 or SAE J1703;
FMVSS No.116 DOT 4 or SAE J1704
brake fluid
 Items Clean funnel
■
Brake fluid can absorb moisture from
the air
Excess moisture in the brake fluid can cause a dangerous loss of braking efficiency. Use
only newly opened brake fluid.
If none of the washer do not work or
the “Windshield Washer Fluid Low” on
the multi-information display, the
washer tank may be empty. Add
washer fluid.WARNING■
When the electric cooling fans are
operating
Do not touch the engine compartment.
With the 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.
Be sure the power switch is off when
working near the electric cooling fans or
radiator grille.
Checking and adding the brake
fluid WARNING■
When filling the reservoir
Take care as brake fluid can harm your
hands and eyes and damage painted sur-
faces.
If fluid gets on your hands or in your eyes,
flush the affected area with clean water
immediately.
If you still experience discomfort, see a
doctor.
NOTICE■
If the fluid level is low or high
It is normal for the brake fluid level to go
down slightly as the brake pads wear out
or when the fluid leve l in the accumulator
is high.
If the reservoir need s frequent refilling,
there may be a serious problem.
Checking and adding the washer
fluid

358 7-1. Essential information
LEXUS NX300h Owners Manu-
al_USA_OM78212U 7-1.Essential information
Press the switch. All the turn signal lights will flash. To turn
them off, press the switch once again.
■
Emergency flashers
If the emergency flashers are used for a
long time while the hybrid system is not
operating (while the “READY” indicator is
not illuminated), the 12-volt battery may dis-
charge. 1 Steadily step on the brake pedal
with both feet and firmly depress it. Do not pump the brake pedal repeatedly
as this will increase the effort required to
slow the vehicle.
2 Shift the shift lever to N. 
If the shift lever is shifted to N
3 After slowing down, stop the vehi-
cle in a safe place by the road.
4 Stop the hybrid system. 
If the shift lever cannot be shifted to
N
3 Keep depressing the brake pedal
with both feet to reduce vehicle
speed as much as possible.
4 To stop the hybrid system, press
and hold the power switch for 2
consecutive seconds or more, or Emergency flashers The emergency flashers are used to
warn other drivers when the vehicle
has to be stopped in the road due to
a breakdown, etc.
Operating instructions If your vehicle has to be
stopped in an emergency Only in an emergency, such as if it
becomes impossible to stop the
vehicle in the normal way, stop the
vehicle using the following proce-
dure:
Stopping the vehicle

3657-2. Steps to take in an emergency
LEXUS NX300h Owners Manu-
al_USA_OM78212U 7
When trouble arises ■
Brake system warning light
■
Charging system warning light *
*
: This light illuminates on the multi-information display.
■
Low engine oil pressure warning light (warning buzzer) *
*
: This light illuminates on the multi-information display.If a warning light turns on or a warning buzzer soundsCalmly perform the following actions if any of the warning lights comes on or
flashes. If a light comes on or flashes, bu t 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 vehicl e 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 vehicl e 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 oil pressure is too low
→ Immediately stop the vehicl e in a safe place and con-
tact your Lexus dealer. Continuing to drive the vehicle
may be dangerous.

366 7-2. Steps to take in an emergency
LEXUS NX300h Owners Manu-
al_USA_OM78212U ■
High coolant temperature warning light (warning buzzer) *
*
: This light illuminates on the multi-information display. ■
Brake system warning light
■
Malfunction indicator lamp
■
SRS warning light 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.394)
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.
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.

3677-2. Steps to take in an emergency
LEXUS NX300h Owners Manu-
al_USA_OM78212U 7
When trouble arises ■
ABS warning light
■
Electric power steering system warning light (warning buzzer)
■
PCS warning light 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.
Warning light Details/Actions
(Flashes or
illuminates) Indicates a malfunction in th e PCS (Pre-Collision System)
or that the system is temporarily unavailable due to the
vehicle being extremely hot/cold, or dirt around a front sen-
sor, etc. ( → P.209, 376)
→ Follow the instructions displayed on the multi-informa-
tion display. ( → P.209, 376)
If the PCS (Pre-Collision System) or VSC (Vehicle Stability
Control) system is disabled, the PCS warning light will illu-
minate.
→ P.210

368 7-2. Steps to take in an emergency
LEXUS NX300h Owners Manu-
al_USA_OM78212U ■
LDA indicator
■
PKSB OFF indicator
■
Slip indicator light
■
Brake hold operated indicator Warning light Details/Actions
(Orange)
Indicates a malfunction in the LDA (Lane Departure Alert
with steering control)
→ When “Lane Departure Alert Unavailable” is dis-
played on the multi-information display, turn the LDA
system off, drive the vehicle for a short time, and then
turn the LDA system back on. ( → P.210)
When a message other than above is displayed, follow
the instructions displayed in the message.
Warning light Details/Actions
(Flashes) 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, pos-
sibly due to a sensor being di rty 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.

3697-2. Steps to take in an emergency
LEXUS NX300h Owners Manu-
al_USA_OM78212U 7
When trouble arises ■
Parking brake indicator
■
Low fuel level warning light
■
Driver’s and front passenger’s seat belt reminder light (warning buzzer) *
*
: Driver’s and front passenger’s seat belt warning buzzer:
The driver’s seat belt warning buzzer sounds to alert the driver that hi s or her seat belt is
not fastened. Once the power switch is turned to IGNITION ON mode, the buzzer
sounds for 6 seconds. If the vehicle reaches a speed of 12 mph (20 km/h), the buzzer
sounds once. If the seat belt is still unfast ened after 24 seconds, the buzzer will sound
intermittently for 6 seconds. Th en, if the seat belt is still unfastened, the buzzer will sound
in a different tone for 90 more seconds.
The front passenger’s seat belt warning buzzer sounds to alert the front passenger that
his or her seat belt is not fastened. The buzzer sounds once if the vehicle reaches a speed
of 12 mph (20 km/h). If the se at belt is still unfastened after 24 seco nds, the buzzer will
sound intermittently for 6 seconds. Then, if the seat belt is still unfa stened, the buzzer will
sound in a different tone for 90 more seconds. 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.
Warning light Details/Actions
Indicates that remain ing 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 pa ssenger 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 need s to be fastened to make
the warning light (warning buzzer) turn off.

3717-2. Steps to take in an emergency
LEXUS NX300h Owners Manu-
al_USA_OM78212U 7
When trouble arises ■
Brake Override System/Drive-S tart Control warning light *
*
: This light illuminates on the multi-information display.
■
SRS warning light
This warning light system monitors the air-
bag sensor assembly, fr ont impact sensors,
side impact sensors (front door), side
impact sensors (rear), driver’s seat position
sensor, driver’s seat be lt buckle switch, front
passenger occupant cl assification 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 th e 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 no t 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 accelerato r 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 wh ile depressing the accelera-
tor pedal. (with warning buzzer)
→ Momentarily release th e accelerator pedal.
Indicates a malfunction in th e Drive-Start Control system
(with warning buzzer)
→ Have the vehicle inspected by your Lexus dealer
immediately.

372 7-2. Steps to take in an emergency
LEXUS NX300h Owners Manu-
al_USA_OM78212U 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.377
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.341)
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 wa rning 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 lig ht will go off after a
few minutes.
■
Conditions that the tire pressure warn-
ing system may not function properly
→ P.340
■
If the tire pressure warning light fre-
quently comes on after blinking for 1
minute
If the tire pressure wa rning 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 st eering 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.
●
If the tire pressure warning light comes
on even after tire inflation pressure
adjustment, it is prob able that you have
a flat tire. Check the tire s. If a tire is flat,
change it with the spare tire and have
the flat tire repaired by the nearest
Lexus dealer.

3737-2. Steps to take in an emergency
LEXUS NX300h Owners Manu-
al_USA_OM78212U 7
When trouble arises WARNING●
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). (I f 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], yo u should determine
the proper tire infl ation 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 warnin g 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.