Lexus NX300h (2021 year). Manual in english — page 23
387
7-2. Steps to take in an emergency
7
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
(
389
7-2. Steps to take in an emergency
7
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 (
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
7
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. (
If the PCS (Pre-Collision System) or VSC (Vehicle Stability
Control) system is disabled, the PCS warning light will illu-
minate.
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. (
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. (
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
7
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
*1
(warning buzzer
*2
)
*1
: 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.
*2
: 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.
Warning light
Details/Actions
When the light comes on:
Low tire inflation pressure such as
Natural causes (
Flat tire (
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 (
Have the system checked by your Lexus dealer.
395
7-2. Steps to take in an emergency
7
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. (
■
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:
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. (
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
■
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
7
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.
A
B
Messages and warnings
399
7-2. Steps to take in an emergency
7
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.
(
●
Malfunction of the charging system
The charging system warning light comes
on. (
■
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:
■
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
on
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
on
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. (
●
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:
■
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. (
■
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. (
■
If “See Owner’s Manual” is shown
●
If the following messages are shown, fol-
lowing the instructions, accordingly.
• “Engine Coolant Temp High” (
●
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” (
*
: 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
7
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
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.
(
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:
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
E
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