2016 LEXUS NX300H light

565
8
When trouble arises
8-2. Steps to take in an emergency
NX300h_OM_USA_OM78082U
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, 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.
Warning light and warning buzzer list
Warning lightWarning light/Details/Actions
(U.S.A.)
(Canada)
Brake system warning light Indicates that:
• The brake fluid level is low; or
• The brake system is malfunctioning
 Immediately stop the vehicle in a safe place and contact your
Lexus dealer. Continuing to drive the vehicle may be dangerous.
*1Charging system warning light
Indicates a malfunction in the vehicle’s charging system
 Immediately stop the vehicle in a safe place and contact your
Lexus dealer. Continuing to drive the vehicle may be dangerous.
*1Low engine oil pressure warning light (warning buzzer)
Indicates that the engine oil pressure is too low
 Immediately stop the vehicle in a safe place and contact your
Lexus dealer. Continuing to drive the vehicle may be dangerous.
*1High coolant temperature warning light (warning buzzer)
Indicates that the engine is overheating
 Immediately stop the vehicle in a safe place. Continuing to drive
the vehicle may be dangerous.
Handling method ( P. 5 9 9 )
Brake system warning light
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.
(U.S.A.)
(Canada)
Malfunction indicator lamp 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.

5668-2. Steps to take in an emergency
NX300h_OM_USA_OM78082U
SRS warning lightIndicates 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.
(U.S.A.)
(Canada)
ABS warning light Indicates a malfunction in:
• The ABS; or
• The brake assist system
 Have the vehicle inspected by your Lexus dealer immediately.
Electric power steering system warning light (warning buzzer)
Indicates a malfunction in the EP S (Electric Power Steering) sys-
tem
 Have the vehicle inspected by your Lexus dealer immediately.
(Flashes)
(If equipped)
PCS warning light
Indicates a malfunction in the pre-collision system
The warning light will operate as follows, even when the system is
not malfunctioning:
• The light will come on when the TRAC and VSC systems are turned off. ( P. 3 0 7 )
• The light will come on when the pre-collision system is turned off.
(  P. 311)
• The light will flash when the sy stem cannot temporarily be used.
 Have the vehicle inspected by your Lexus dealer immediately.
Slip indicator light
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 operat-
ing.
 Have the vehicle inspected by your Lexus dealer immediately.
(Flashes)
Brake hold operated indicator
Indicates a malfunction in the brake hold system
 Have the vehicle inspected by your Lexus dealer immediately.
(Flashes)
(U.S.A.)
(Flashes)
(Canada)
Parking brake indicator It is possible that the parking br ake is not fully engaged or released
 Operate the parking brake switch once again.
This light comes on when the park ing brake is not released. If the
light turns off after the parking brake is fully released, the system is
operating normally.
Warning lightWarning light/Details/Actions

5678-2. Steps to take in an emergency
8
When trouble arises
NX300h_OM_USA_OM78082U
Low fuel level warning lightIndicates that remaining fuel is approximately 2.2 gal. (8.4 L,
1.8 Imp.gal.) or less
 Refuel the vehicle.
Driver's and front passenger's seat belt reminder light (warning
buzzer)
*2
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 passenger’s
seat belt also needs to be fa stened to make the warning light
(warning buzzer) turn off.
Master warning light A buzzer sounds and the warning light comes on and flashes to
indicate that the master warning system has detected a malfunc-
tion.
 P. 5 7 2
Tire pressure warning light
When the light comes on:
Low tire inflation pressure such as
• Natural causes ( P. 5 6 9 )
•Flat tire ( P. 5 7 5 )
 Adjust the tire inflation pressure to the specified level.
The light will turn off after a fe w 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 pr essure warning system (P. 5 6 9 )
 Have the system checked by your Lexus dealer.
*1
Brake Override System/Drive-Start Control warning light
Indicates that:
• The Brake Override System is operating;
• The Brake Override System is malfunctioning (with warning
buzzer);
• The Drive-Start Control is operating (with warning buzzer); or
• The Drive-Start Control is malfunctioning (with warning buzzer)
 Follow the instruction that are displayed on the multi-informa-
tion display.
Warning lightWarning light/Details/Actions

5688-2. Steps to take in an emergency
NX300h_OM_USA_OM78082U
*1: This light illuminates on the multi-information display.
*2: Driver’s and front passenger’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 power switch is turned to 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 st ill unfastened after 24 second s, the buzzer will sound inter-
mittently for 10 seconds. Then, if the seat be lt is still unfastened, the buzzer will sound
in a different tone for 20 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 seat belt is still unfastened after 24 seconds, the
buzzer will sound intermittently for 10 seconds. Then, if the seat belt is still unfastened,
the buzzer will sound in a different tone for 20 more seconds.
■SRS warning light
This warning light system monitors the airbag sensor assembly, front impact sensors, side
impact sensors (front), side impact sensors (r ear), driver’s seat position sensor, driver’s
seat belt buckle switch, front passenger occupant classification system (ECU and sen-
sors), “AIR BAG ON” indicator light, “AIR BAG OFF” indicator light, front passenger’s
seat belt buckle switch, driver ’s seat belt pretensioner, front passenger’s seat belt preten-
sioner and force limiter, airbags, interconnecting wiring and power sources. ( P. 4 0 )
■Front passenger detection sensor, seat belt reminder and warning buzzer
●If luggage is placed on the front passenger seat, the front passenger detection sensor
may cause the warning light to flash and the warning buzzer to sound even if a passen-
ger is not sittin g in the seat.
●If a cushion is placed on th e seat, the sensor may not detect a passenger, and the warn-
ing 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 warnin g 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.
The light will go off after several driving trips.
If the light does not go off even after severa l trips, contact your Lexus dealer as soon as
possible.

5698-2. Steps to take in an emergency
8
When trouble arises
NX300h_OM_USA_OM78082U
■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. 5 7 5
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 infla-
tion pressure is at the specified level and carry out initialization. ( P. 5 1 8 )
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, adjusting
the tire inflation pressure will turn off the warning light (after a few minutes).
■When a tire is replaced with a spare tire
Vehicles with a compact spare tire: The comp act spare tire is not equipped with a tire
pressure warning valve and transmitter. If a tire goes flat, the tire pressure warning light
will not turn off even though the flat tire ha s 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.
Vehicles with a full-size spare tire: The spare tire is also equipped with a tire pressure
warning valve and transmitter. The tire pressure warning light will turn on if the tire infla-
tion pressure of the spare tire is low. If a tire goes flat, the tire pressure warning 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 warning system may not function properly
 P. 5 2 1
■If the tire pressure warning light frequently 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, ha ve 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.

5708-2. Steps to take in an emergency
NX300h_OM_USA_OM78082U
WA R N I N G
■If both the ABS and the brake system warning lights remain on
Stop your vehicle in a safe place immediately and contact your Lexus dealer. The vehi-
cle 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 precautions. 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 inflation pressure
immediately.
●If the tire pressure warning light comes on even after tire inflation pressure adjust-
ment, 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.
●Avoid abrupt maneuvering and braking. 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.

5718-2. Steps to take in an emergency
8
When trouble arises
NX300h_OM_USA_OM78082U
WA R N I N G
■Maintenance of the tires
Each tire, including the spare (if provided), should be checked monthly when cold and
inflated to the inflation pressure recomm ended by the vehicle manufacturer on the
vehicle placard or tire inflation pressure la bel (tire and load information label). (If your
vehicle has tires of a different size than the size indicated on the vehicle placard or tire
inflation pressure label [tire and load in formation 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 moni-
toring system (TPMS-tire pressure warning system) that illuminates a low tire pressure
telltale (tire pressure warning light) when on e or more of your tires is significantly
under-inflated. Accordingly, when the low ti re 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 significantly under-inflated tire causes the
tire to overheat and can lead to tire failure. Under-inflation also reduces fuel efficiency
and tire tread life, and ma y affect the vehicle’s handling and stopping ability.
Please note that the TPMS (tire pressure wa rning system) is not a substitute for proper
tire maintenance, and it is the driver’s resp onsibility to maintain correct tire pressure,
even if under-inflation has no t reached the level to trigger illumination of the TPMS low
tire pressure telltale (tire pressure warning light).
Your vehicle has also been equipped with a TPMS (tire pressure warning system) mal-
function indicator to indicate when the system is not operating properly. The TPMS
(tire pressure warning system) malfunction indi cator is combined with the low tire pres-
sure telltale (tire pressure warning light). When the system detects a malfunction, the
telltale will flash for approximately one minu te and then remain continuously illumi-
nated. This sequence will cont inue upon subsequent 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) malfun ctions 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 functioning properly. Always
check the TPMS (tire pressure warning syst em) 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 specificatio ns or makers, as the tire pressure warning
system may not operate properly.

5728-2. Steps to take in an emergency
NX300h_OM_USA_OM78082U
If a warning message is displayed
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
Handling Method
Follow the instructio ns of the message
on the multi-information display.
If any of the warning messages are show n again after the following actions have
been performed, contact your Lexus dealer.
The warning lights and warning buzzers operate as follows depending on the
content of the message. If a message in dicates the need for inspection by a
dealer, have the vehicle inspected by your Lexus dealer immediately.
The multi-information display shows warnings of system malfunctions, incor-
rectly performed operations, and messages that indicate a need for mainte-
nance. When a message is shown, perform the correction procedure
appropriate to the message.
1
2
3
Messages and warnings
System
warning light
Wa r n i n g b u z z e r*Wa r n i n g
Comes on 
Sounds Indicates an important situation, such
as when a system related to driving is
malfunctioning or that danger may
result if the correction procedure is not
performed
Comes on
or flashesSounds
Indicates an important situation, such
as when the systems shown on the
multi-information display may be mal-
functioning
FlashesSounds
Indicates a situation, such as when
damage to the vehicle or danger may
result