warning lights LEXUS NX300H 2019 Owner's Guide

3677-2. Steps to take in an emergency
LEXUS NX300h Owners Manu-
al_USA_M78287_en
7
When trouble arises
■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, 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 lightDetails/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 lightDetails/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 lightDetails/Actions
Indicates that the hybrid system is overheated
 P. 396

3747-2. Steps to take in an emergency
LEXUS NX300h Owners Manu-
al_USA_M78287_enThe 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.379
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.343)
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.339
■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.
WARNING
●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.

3777-2. Steps to take in an emergency
LEXUS NX300h Owners Manu-
al_USA_M78287_en
7
When trouble arises
The warning lights and warning buzzers op erate 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.
*: 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.369)
●Malfunction of the charging system
The charging system warning light comes
on. ( P.367)
■If “Hybrid System Overheated Reduced
Output Power” 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.396
■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.392).
*: Displays for about 6 seconds
Messages and warnings
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SoundsIndicates 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

447What to do if... (Troubleshooting)
LEXUS NX300h Owners Manu-
al_USA_M78287_en447Alphabetical Index
Alphabetical Index
A
A/C ................................................................... 266 Air conditioning filter ...............................348
Automatic air conditioning system ... 266
Micro dust and pollen filter..................... 271
S-FLOW mode............................................ 271
ABS (Anti-lock Brake System).............. 249 Function .......................................................... 249
Warning light ...............................................369
Active Sound Control (ASC) ................... 181
AFS (Adaptive Front-lighting System) 184
Air conditioning filter ................................. 348
Air conditioning system ............................ 266 Air conditioning filter ...............................348
Automatic air conditioning system ... 266
Micro dust and pollen filter..................... 271
S-FLOW mode............................................ 271
Airbags ............................................................... 32 Airbag operating conditions................... 34
Airbag precautions for your child .........37
Airbag warning light ................................369
Correct driving posture ............................ 25
Curtain shield airbag operating condi-tions .................................................................. 34
Curtain shield airbag precautions ........37
Front passenger occupant classification system ............................................................... 41
General airbag precautions ....................37
Locations of airbags.....................................32
Modification and disposal of airbags . 40
Seat cushion airbag ......................................32
Side airbag operating conditions ......... 34
Side airbag precautions .............................37
Side and curtain shield airbags operating conditions...................................................... 34
Side and curtain shield airbags precau- tions ...................................................................37
SRS airbag instruct ions for Canadian
owners ......................................................... 434
SRS airbags ......................................................32
SRS warning light ......................................369 Alarm ..................................................................... 71
Alarm..................................................................... 71
Anchor brackets ..................................... 55, 57
Antenna (Smart access system with push- button start) ..................................................120
Anti-lock brake system (ABS) ............... 249 Function .......................................................... 249
Warning light .............................................. 369
Approach warning...................................... 222
Armrest............................................................ 295
ASC (Active Sound Control) ................... 181
Assist grips ..................................................... 295
Automatic air conditioning system Air conditioning filter............................... 348
Automatic air conditioning system ...266
Micro dust and pollen filter ..................... 271
S-FLOW mode ............................................ 271
Automatic headlight leveling system ... 183
Automatic High Beam ............................... 185
Automatic light control system............... 183
B
Back door ........................................................ 108 Wireless remote control ............................. 111
Back-up lights Replacing light bulb ................................. 355
Battery (12-volt battery) If the 12-volt battery is discharged ....392
Preparing and checking before winter..........................................................................256
Replacing .......................................................394
Warning light ............................................... 367
Battery (traction batter y) ............................ 64
Blind Spot Monitor (BSM)......................... 241 Blind Spot Monitor function ................. 243
Rear Cross Traffic Alert function .......245
Bottle holders ................................................280

448Alphabetical Index
LEXUS NX300h Owners Manu-
al_USA_M78287_en
Brake Brake Hold ..................................................... 179
Fluid .................................................................. 407
Parking brake ................................................ 177
Regenerative braking ................................. 62
Warning light ...............................................368
Brake assist .................................................... 249
Brake Hold ....................................................... 179
Break-in tips...................................................... 151
Brightness control Instrument panel light control ................ 83
BSM (Blind Spot Monitor)......................... 241 Blind Spot Monitor function................. 243
Rear Cross Traffic Alert function....... 245
BSM (Blind Spot Monitor) main switch241
C
Card key .......................................................... 100
Care Aluminum wheels ........................................ 312
Exterior .............................................................315
Interior ...............................................................315
Seat belts..........................................................315
Cargo capacity.........................155, 158, 402
Cargo hooks ................................................. 282
Cargo net hooks .......................................... 282
Chains .............................................................. 257
Child restraint system....................................47 Booster seats installation .......................... 53
Convertible seats installation.................. 52
Front passenger occupant classification system ............................................................... 41
Infant seats installation .................................. 51
Installing CRS with LATCH anchors . 55
Installing CRS with seat belts.................... 51
Installing CRS with top tether strap..... 57
LATCH anchors ........................................... 55 Child safety ....................................................... 46
12-volt battery precautions ...... 335, 395
Airbag precautions ...................................... 37
Back door precautions ............................ 108
Child restraint system ................................. 47
How your child should wear the seat belt............................................................................. 28
Installing child restraints............................. 47
Moon roof precautions............................ 146
Power window lock switch .....................143
Power window precautions ...................143
Rear door child-protectors ................... 107
Removed key battery precautions... 350
Seat belt extender precautions.............. 28
Seat belt precautions .................................. 46
Seat heater precautions.......................... 273
Child-protectors............................................107
Cleaning ..................................................312, 315 Aluminum wheels ........................................312
Exterior..............................................................312
Interior .............................................................. 315
Seat belts ......................................................... 315
Clock ................................................................ 286
Compass .......................................................... 301
Condenser ..................................................... 332
Console box ..................................................280
Consumption screen .................................... 93
Coolant Capacity ........................................................ 405
Checking ........................................................ 331
Preparing and checking before winter..........................................................................256
Warning light .............................................. 368
Cooling system...............................................331 Hybrid system overheating ................. 396
Cornering lights ............................................ 184
Cruise control Dynamic radar cruise control with full-
speed range ................................................ 217
Cup holders ...................................................280
Curtain shield airbags .................................. 32
Customizable features ................................ 421

450Alphabetical Index
LEXUS NX300h Owners Manu-
al_USA_M78287_en
Emergency, in case of If a warning buzzer sounds .................. 367
If a warning light turns on ...................... 367
If a warning message is displayed..... 376
If the 12-volt battery is discharged .... 392
If the electronic key does not operate properly.......................................................389
If the fuel filler door cannot be opened .........................................................................389
If the hybrid system will not start ........ 387
If you have a flat tire .................................. 379
If you lose your keys................................ 388
If you think something is wrong .........365
If your vehicle becomes stuck.............399
If your vehicle has to be stopped in an
emergency ................................................360
If your vehicle needs to be towed ..... 362
If your vehicle overheats ........................396
Energy monitor ............................................... 93
Engine Accessory mode .........................................170
Compartment ............................................. 328
Engine switch................................................ 168
Hood................................................................ 326
How to start the hybrid system ........... 168
Identification number ...............................403
If your vehicle has to be stopped in an
emergency ................................................360
Ignition switch (power switch) ............. 168
Overheating.................................................396
Power switch ................................................ 168
Engine compartment cover .................... 329
Engine coolant Capacity .........................................................405
Checking .........................................................331
Preparing and checking before winter......................................................................... 256
Warning light ...............................................368
Engine coolant temperature gauge ........79 Engine oil
Capacity ........................................................ 404
Checking .......................................................329
Warning light .............................................. 368
Engine switch ................................................. 168
EPS (Electronic Power Steering) Function .......................................................... 249
Warning light .............................................. 369
EV drive mode................................................. 171
EV indicator ...................................................... 62
Event data recorder (E DR) ............................7
F
Flat tire ............................................................. 379
Tire pressure warning system .............339
Floor mats .......................................................... 24
Fluid Brake ................................................................407
Transmission................................................ 406
Washer ...........................................................333
Fog lights Replacing light bulbs ............................... 355
Switch................................................................188
Front passenger occupant classification system ................................................................ 41
Front passenger’s seat belt reminder light ............................................................................ 371
Front seat heaters.........................................274
Front seats ........................................................126 Adjustment ......................................................126
Cleaning .......................................................... 315
Correct driving posture ............................ 25
Driving position memory .........................132
Head restraints............................................. 135
Power easy access system .....................132
Seat heaters .................................................. 274
Seat position memory ...............................132

451What to do if... (Troubleshooting)
LEXUS NX300h Owners Manu-
al_USA_M78287_en451Alphabetical Index
Front side marker lights Light switch .....................................................182
Replacing light bulbs................................356
Wattage..........................................................409
Front turn signal lights Replacing light bulbs................... 355, 356
Turn signal lever ........................................... 176
Wattage..........................................................409
Fuel Capacity .........................................................403
Fuel gauge ....................................................... 79
Gas station information..........................460
Information ..................................................... 410
Refueling ......................................................... 195
Type..................................................................403
Warning light ................................................. 371
Fuel filler door .................................................195 Refueling ......................................................... 195
When the fuel filler door cannot be opened ........................................................389
Fuses ...................................................................351
G
Garage door opener ................................. 296
Gas station information ............................ 460
Gauges ................................................................79
Glove box .......................................................280
Glove box light .............................................280
Grocery bag hooks .................................... 283
H
Head restraints ...............................................135
Head-up display.............................................. 89
Headlights ........................................................182 Automatic headlight leveling ................ 183
Automatic High Beam ............................. 185
Light switch .................................................... 182
Replacing light bulbs ............................... 355
Heated steering wheel ...............................274
Heaters Automatic air conditioning system ...266
Heated steering wheel ............................ 273
Outside rear view mirrors..................... 267
Seat heaters .................................................. 274
High mounted stoplight Replacing light bulb ................................. 355
Hill-start assist control ............................... 250
Hood ................................................................. 326 Open................................................................326
Hooks Cargo hooks................................................282
Retaining hooks (floor mat) ..................... 24
Horn ................................................................... 138
Hybrid battery (traction battery) Location ............................................................. 64
Specification ................................................ 404
Hybrid battery air vent ................................. 66
Hybrid system .................................................... 61 Emergency shut off system...................... 67
Energy monitor/consumption screen93
EV drive mode............................................... 171
High voltage components ....................... 64
Hybrid System Indicator ........................... 82
Hybrid system precautions...................... 64
Hybrid vehicle driving tips ....................254
If the hybrid system will not start ........387
Overheating ................................................ 396
Power switch................................................. 168
Regenerative braking ................................. 62
Starting the hybrid system ...................... 168
Vehicle proximity noti fication system. 63

452Alphabetical Index
LEXUS NX300h Owners Manu-
al_USA_M78287_en
Hybrid System Indicator.............................. 82
Hybrid transmission...................................... 173
I
I/M test ............................................................ 322
Identification Engine .............................................................403
Vehicle ............................................................ 402
Ignition switch (Power switch) ................ 168
Illuminated entry system ............................276
Immobilizer system ........................................ 69
Indicators ............................................................76
Initialization Items to initialize .........................................430
Inside rear view mirror ............................... 138
Instrument panel light control ................... 83
Interior lights...................................................276
Intuitive parking assist Function ...........................................................227
Warning message..................................... 228
J
JackPositioning a floor jack............................ 326
Vehicle-equipped jack .......................... 380
Jack handle ....................................................380
Jam protection function Moon roof .......................................................145
Power back door closer ............................114
Power windows............................................ 142
Rear seats ......................................................... 131
K
Keyless entrySmart access system with push-button start ................................................................. 120
Wireless remote control ........................... 101
Keys.................................................................... 100 Battery-saving function.............................. 121
Electronic key ...............................................100
Engine switch ................................................ 168
If the electronic key does not operate properly ...................................................... 389
If you lose your keys ................................ 388
Key number plate .......................................100
Keyless entry .......................................104, 120
Mechanical key ............................................ 100
Power switch................................................. 168
Replacing the battery ...............................349
Warning buzzer .......................................... 120
Wireless remote control key .................. 101
Knee airbags .................................................... 32
L
Lane Departure Alert with steering control (LDA) ............................................................ 209
Language (multi-information display) 424
LATCH anchors ............................................. 55
LDA (Lane Departure Alert with steering control) ......................................................... 209
Lever Auxiliary catch lever .................................326
Hood lock release lever .........................326
Shift lever ..........................................................173
Turn signal lever ...........................................176
Wiper lever .................................................... 188
Lexus Enform Remote............................... 309
Lexus Enform Safety Connect............... 304
Lexus Enform Service Connect ............. 310

453What to do if... (Troubleshooting)
LEXUS NX300h Owners Manu-
al_USA_M78287_en453Alphabetical Index
Lexus Safety System+.................................. 197 Automatic High Beam ............................. 185
Dynamic radar cruise control with full-speed range ................................................ 217
LDA (Lane Departure Alert with steering control) ........................................................209
PCS (Pre-Collision System)................ 202
License plate lights Light switch .....................................................182
Replacing light bulbs................................355
Light Automatic High Beam system............. 185
Cornering lights .......................................... 184
Fog light switch ............................................ 188
Headlight switch ..........................................182
Illuminated entry system......................... 276
Interior light list ............................................ 276
Interior lights..................................................277
Luggage compartment light ................... 110
Personal lights ..............................................277
Replacing light bulbs................................355
Turn signal lever ........................................... 176
Vanity lights ..................................................286
Wattage..........................................................409
Welcome light illumination control ... 105
Light bulbs Replacing .......................................... 355, 356
Wattage..........................................................409
Luggage cover ............................................. 284
M
Maintenance Do-it-yourself maintenance ................. 324
General maintenance ...............................319
Maintenance data...................................... 402
Maintenance requirements ....................319
Malfunction indicator lamp ..................... 368 Meter
Head-up display............................................89
Indicators........................................................... 74
Instrument panel light control.................83
Meters................................................................. 79
Multi-information display ..........................84
Warning lights ............................................. 367
Warning messages................................... 376
Micro dust and pollen filter ....................... 271
Microphone ................................................... 304
Mirrors Inside rear view mirror ............................. 138
Outside rear view mirror defoggers 267
Outside rear view mirrors...................... 140
Vanity mirrors ............................................. 286
Moon roof Jam protection function ........................... 145
Operation ........................................................144
Warning message .......................... 146, 376
Multi-information display Clock................................................................... 79
Drive information ..........................................85
Dynamic radar cruise control with full-
speed range ................................................ 217
Energy monitor .............................................. 93
Language ....................................................... 424
LDA (Lane Departure Alert with steering control) ....................................................... 209
Warning messages................................... 376
N
Noise from under vehicle ...............................6

454Alphabetical Index
LEXUS NX300h Owners Manu-
al_USA_M78287_en
O
Odometer ..........................................................79
Oil Engine oil .......................................................404
Rear differential oil .................................... 407
Opener Back door........................................................... 111
Fuel filler door............................................... 195
Hood................................................................ 326
Outside rear view mirrors ........................ 140 Adjusting and folding ............................... 140
Blind Spot Monitor (BSM) ..................... 241
Linked mirror functi on when reversing
.......................................................................... 140
Mirror position memory........................... 132
Outside rear view mirror defoggers 267
Outside temperature display .....................79
Overheating .................................................. 396
P
Paddle shift switches .................................... 175
Panic mode ......................................................102
Parking brake Operation........................................................ 177
Parking brake engaged warning buzzer/message ........................................................178
Warning light ................................................. 371
Parking lights Light switch .....................................................182
Replacing light bulb..................................355
Parking Support Brake function (for static objects) ......................................................... 232Indicator ....................................................75, 76
Warning light ............................................... 370
Warning messages .................................. 238 PCS (Pre-Collision System)
Function ..........................................................202
PCS switch....................................................204
Warning light .............................................. 369
Warning message ..................................... 376
Personal lights................................................276 Switch............................................................... 277
PKSA (Parking Support Alert) .............. 226
Power back door opener and closer .......111
Power control unit coolant Capacity ........................................................ 405
Checking ........................................................ 331
Preparing and checking before winter..........................................................................256
Radiator .......................................................... 332
Power easy access system ........................132
Power outlets ................................................ 287
Power steering (Electric Power Steering system) .......................................................... 249Warning light .............................................. 369
Power switch .................................................. 168
Power windows Door lock linked window operation ..143
Jam protection function ............................142
Operation ........................................................142
Window lock switch...................................143
Pre-Collision System (PCS) Function ..........................................................202
PCS switch....................................................204
Warning light .............................................. 369
Warning message ..................................... 376