maintenance LEXUS NX300h 2018 Repair Manual

3757-2. Steps to take in an emergency
LEXUS NX300h Owners Manu-
al_USA_OM78212U 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.367)
●
Malfunction of the charging system
The charging system warning light comes
on. ( → P.365)
■
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.394■
If “Maintenance required for Traction
battery cooling parts at your dealer” is
shown
The filter may be clogge d, or the air intake
vents or ducts may be blocked. Have the
vehicle inspected by your Lexus dealer.
■
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-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 ⎯ 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

376 7-2. Steps to take in an emergency
LEXUS NX300h Owners Manu-
al_USA_OM78212U charged” ( → P.390).*
: Displays for about 6 seconds ■
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,
when the vehicle is to be stopped for a long
period of time, shift the shift lever to P. ■
If “Traction battery needs to be pro-
tected. Shift into P to restart.” is shown
Message is displayed when the remaining
charge for the hybrid battery (traction bat-
tery) is low, because vehicle has been
shifted N for a long period of time.
When operating the vehicle, restart the
hybrid system. ■
If “Shift to P Before Exiting Vehicle” is
shown
Message is displayed when the driver’s
door is opened with out 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
pedal has been depressed and the shift
lever is in N. Releas e the accelerator pedal
and shift the shift lever to D, S or R. ■
If “Depress Brake When Vehicle Is
Stopped Hybrid Syst em 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, th e hybrid system may
overheat.
Release the accelerator pedal and depress
the brake pedal.
■
If “Front Camera Unavailable” or “Front
Camera Unavailable Remove Debris
On Windshield” is shown
The following systems may be suspended
until the problem shown in the message is resolved. ( → P.209, 367)●
PCS (Pre-Collision System) ●
LDA (Lane Departure Alert with steering
control) ●
Dynamic radar cruise control with full-
speed range ●
Adaptive High-beam System ●
Automatic High Beam ■
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 oi l maintenance data
has been reset.)
Check the engine oil, and change if neces-
sary. After changing th e engine oil, the oil
change system should be reset. ( → P.329)■
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 en gine oil, and oil fil-
ter by your Lexus dealer. After changing the
engine oil, the oil change system should be
reset. ( → P.329)■
If “See Owner’s Manual” is shown ●
If the following messages are shown, fol-
lowing the instruct ions, accordingly.
• “Engine Coolant Temp High” ( → P.394)
• “Aux Battery Low” ( → P.375)●
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 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”

399
LEXUS NX300h Owners Manu-
al_USA_OM78212U 8 8
Vehicle specifications Vehicle specifications 8-1. Specifications
Maintenance data (fuel, oil level,
etc.) .............................................. 400
Fuel information ......................... 408
Tire information........................... 410
8-2. Customization
Customizable features............. 419
8-3. Initialization
Items to initialize ........................ 429

400 8-1. Specifications
LEXUS NX300h Owners Manu-
al_USA_OM78212U 8-1.Specifications
*1
:Unladen vehicle *2
: Vehicles with towing package
■
Vehicle identification number
The vehicle identification number
(VIN) is the legal identifier for your
vehicle. This is the primary identifica-
tion number for your Lexus. It is used in
registering the ownership of your vehi-
cle.
This number is stamped on the top left
of the instrument panel. This number is also on the Certification
Label.Maintenance data (fue l, oil level, etc.)
Dimensions and weight Overall length 182.7 in. (4640 mm)
Overall width 72.6 in. (1845 mm)
Overall height *1
64.8 in. (1645 mm)
Wheelbase 104.7 in. (2660 mm)
Tread Front 62.2 in. (1580 mm)
Rear 62.2 in. (1580 mm)
Vehicle capacity weight
(Occupants + luggage) 895 lb. (405 kg)
Trailer Weight Rating *2

(Trailer weight + cargo weight) 1500 lb. (685 kg)
Vehicle identification

4298-3. Initialization
LEXUS NX300h Owners Manu-
al_USA_OM78212U 8
Vehicle specifications 8-3.Initialization
*
:If equippedItems to initialize The following items must be initialized for normal system operation after such
cases as the 12-volt battery being re connected, or maintenance being per-
formed on the vehicle.
List of the items to initialize Item When to initialize Reference
Message indicating maintenance is
required (U.S.A. only) • After the maintenance is per-
formed P.319
Tire pressure warning system • When rotating the tires on vehi-
cles with differing front and rear
tire inflation pressures
• When changing the tire inflation
pressure by changing traveling
speed or load weight, etc.
•When changing the tire size P.341
Oil maintenance • After the maintenance is per-
formed P.329
Lexus parking assist monitor *
• After reconnecting or changing
the 12-volt battery
• After changing a fuse Refer to the
“NAVIGA-
TION AND
MULTIME-
DIA SYS-
TEM
OWNER’S
MANUAL”.Panoramic view monitor *
Power back door *
P.116
Power window
• When functioning abnormally P.144
Moon roof *
P.147

449What to do if... (Troubleshooting)
LEXUS NX300h Owners Manu-
al_USA_OM78212U Alphabetical Index
449Defogger
Outside rear view mirrors .................... 269
Rear window ................................................ 269
Windshield .................................................... 269
Differential ...................................................... 405
Dimension ......................................................400
Dinghy towing................................................. 167
Display
Drive information .......................................... 86
Dynamic radar cruise control with full-
speed range ................................................ 217
Energy monitor.............................................. 94
LDA (Lane Departure Alert with steering
control) ..........................................................210
Multi-information display .......................... 85
Warning messages .................................. 375
Do-it-yourself maintenance .................... 324
Doors
Automatic door lock ing and unlocking
system ........................................................... 109
Back door......................................................... 110
Door glasses .................................................. 144
Door lock........................................................ 106
Outside rear view mirrors ...................... 142
Rear door child-protectors ................... 109
Side doors ...................................................... 106
Drive information ........................................... 86
Drive-start control ............................... 151, 173
Driver’s seat belt remi nder light ............ 369
Driver’s seat position memory .................134
Driving
Break-in tips .................................................... 151
Correct posture ............................................ 25
Driving mode select switch .................. 249
Hybrid vehicle driving tips .................... 255
Procedures .................................................... 150
Winter drive tips......................................... 257
Driving position memory............................134
Memory recall function ............................135
Dynamic radar cruise control with full-
speed range
Function ............................................................ 217 Warning message ..................................... 374 E
E-Four .............................................................. 250
ECB (Electronically Controlled Brake Sys-
tem) ................................................................ 250
Eco mode........................................................ 249
EDR (Event data recorder) ............................7
Electric motor
Location ...............................................................61
Specification .................................................. 401
Electric Power Steering (EPS)
Function ......................................................... 250
Warning light ............................................... 367
Electronic key
Battery-saving function.............................123
If the electronic key does not operate
properly .......................................................387
Replacing the battery ............................... 347
Electronically Controlled Brake System
(ECB) ............................................................ 250
Emergency flashers ....................................358
Emergency, in case of
If a warning buzzer sounds.................. 365
If a warning light turns on...................... 365
If a warning message is displayed ..... 374
If the 12-volt battery is discharged ... 390
If the electronic key does not operate
properly .......................................................387
If the fuel filler do or cannot be opened
..........................................................................387
If the hybrid system will not start ....... 385
If you have a flat tire .................................. 377
If you lose your keys ....................... 103, 105
If you think something is wrong..........363
If your vehicle becomes stuck ............. 397
If your vehicle has to be stopped in an
emergency ................................................ 358
If your vehicle needs to be towed .... 360
If your vehicle overheats ........................394
Energy monitor ............................................... 94
Engine

450 Alphabetical Index
LEXUS NX300h Owners Manu-
al_USA_OM78212U Accessory mode .........................................170
Compartment ............................................. 327
Engine switch................................................ 168
Hood................................................................ 325
How to start the hybrid system ........... 168
Identification number ................................ 401
If your vehicle has to be stopped in an
emergency ............................................... 358
Ignition switch (power switch) ............. 168
Overheating................................................. 394
Power switch ................................................ 168
Engine compartment cover .................... 328
Engine coolant
Capacity .........................................................403
Checking .......................................................330
Preparing and checking before winter
......................................................................... 257
Warning light ...............................................366
Engine coolant temperature gauge ........79
Engine oil
Capacity ......................................................... 402
Checking ....................................................... 328
Warning light ...............................................366
Engine oil maintenance data .................. 329
Engine switch ................................................. 168
EPS (Electronic Power Steering)
Function ..........................................................250
Warning light ............................................... 367
EV drive mode................................................. 171
EV indicator ...................................................... 62
Event data recorder (EDR) ............................7 F
Flat tire ..............................................................377
Tire pressure warning system ............ 338
Floor mats .......................................................... 24
Fluid
Brake ............................................................... 405
Transmission................................................ 404
Washer ........................................................... 332
Fog lights
Replacing light bulbs ................................353
Switch................................................................ 189
Front passenger occupant classification
system ................................................................ 41
Front passenger’s seat belt reminder light
.......................................................................... 369
Front seats ........................................................128
Adjustment ..................................................... 128
Cleaning ...........................................................317
Correct driving posture ............................ 25
Driving position memory .........................134
Head restraints..............................................137
Power easy access system .....................134
Seat heaters .................................................. 276
Seat position memory ...............................134
Front side marker lights
Light switch .................................................... 183
Replacing light bulbs ................................354
Wattage ..........................................................407
Front turn signal lights
Replacing light bulbs ................... 353, 354
Turn signal lever ...........................................176
Wattage ..........................................................407
Fuel
Capacity .......................................................... 401
Fuel gauge ........................................................ 79
Gas station information ......................... 460
Information ................................................... 408
Refueling.......................................................... 196
Type ................................................................... 401
Warning light .............................................. 369
Fuel filler door .................................................196

451What to do if... (Troubleshooting)
LEXUS NX300h Owners Manu-
al_USA_OM78212U Alphabetical Index
451Refueling ..........................................................196
When the fuel filler door cannot be
opened ........................................................ 387
Fuses ................................................................. 349 G
Garage door opener ................................. 298
Gas station information ............................ 460
Gauges ................................................................79
Glove box ....................................................... 282
Glove box light ............................................. 282
Grocery bag hooks .................................... 285 H
Head restraints ............................................... 137
Head-up display.............................................. 90
Headlights ....................................................... 183
Automatic headlight leveling ................ 184
Automatic High Beam ............................. 186
Light switch .................................................... 183
Replacing light bulbs................................ 353
Heated steering wheel ...............................276
Heaters
Automatic air conditioning system ...268
Heated steering wheel............................ 275
Outside rear view mirrors .................... 269
Seat heaters .................................................. 275
High mounted stoplight
Replacing light bulb..................................353
Hill-start assist control ............................... 250
Hood ................................................................. 325
Warning message........................... 107, 374
Hooks
Cargo hooks................................................ 284
Retaining hooks (floor mat)......................24
Horn ................................................................... 140
Hybrid battery (traction battery)
Location............................................................. 64
Specification ................................................. 402
Hybrid battery air vent ................................. 66
Hybrid system .................................................... 61 Emergency shut off system...................... 67
Energy monitor/consumption screen 94
EV drive mode............................................... 171
High voltage components ....................... 64
Hybrid System Indicator ........................... 82
Hybrid system precautions...................... 64
Hybrid vehicle driving tips ....................255
If the hybrid system will not start ....... 385
Overheating .................................................394
Power switch................................................. 168
Regenerative braking ................................. 62
Starting the hybrid system ...................... 168
Vehicle proximity noti fication system. 63
Hybrid System Indicator.............................. 82
Hybrid transmission...................................... 173
I
I/M test ............................................................ 322
Identification
Engine............................................................... 401
Vehicle ........................................................... 400
Ignition switch (Power switch) ................ 168
Illuminated entry system ........................... 278
Immobilizer system........................................ 69
Indicators ............................................................74
Initialization
Engine oil maintenance data................329
Items to initialize ......................................... 429
Tire pressure warning system ...............341
Inside rear view mirror ............................... 140
Instrument panel light control ................... 84
Interior lights.................................................. 278
Intuitive parking assist
Function .......................................................... 227
Warning message ..................................... 229

453What to do if... (Troubleshooting)
LEXUS NX300h Owners Manu-
al_USA_OM78212U Alphabetical Index
453M
Maintenance
Do-it-yourself maintenance ................. 324
General maintenance ...............................319
Maintenance data..................................... 400
Maintenance requirements ....................319
Malfunction indicator lamp ..................... 366
Meter
Head-up display ........................................... 90
Indicators ...........................................................74
Instrument panel light control ................ 84
Meters ................................................................ 79
Multi-information display .......................... 85
Warning lights .............................................365
Warning messages .................................. 374
Micro dust and pollen filter ..................... 273
Microphone ................................................... 306
Mirrors
Inside rear view mirror............................. 140
Outside rear view mirror defoggers269
Outside rear view mirrors ...................... 142
Vanity mirrors..............................................288
Moon roof
Jam protection function............................ 147
Operation........................................................146
Warning message...........................148, 374
Multi-information display
Drive information .......................................... 86
Dynamic radar cruise control with full-
speed range ................................................ 217
Energy monitor.............................................. 94
Language....................................................... 422
LDA (Lane Departure Alert with steering
control) ..........................................................210
Warning messages .................................. 374
N
Noise from under vehicle ...............................6 O
Odometer ..........................................................79
Oil
Engine oil........................................................402
Rear differential oil......... .......... ........... ...... 405
Opener
Back door ......................................................... 113
Fuel filler door ............................................... 196
Hood ................................................................325
Outside rear view mirrors ......................... 142
Adjusting and folding.................................142
Blind Spot Monitor (BSM)......................241
Linked mirror functi on when reversing
............................................................................142
Mirror position memory ...........................134
Outside rear view mirror defoggers269
Outside temperature display .....................79
Overheating .................................................. 394
P
Paddle shift switches .................................... 175
Panic mode ..................................................... 104
Parking brake
Operation ........................................................ 177
Parking brake engaged warning buzzer/
message ........................................................ 177
Warning light .............................................. 369
Parking lights
Light switch .................................................... 183
Replacing light bulb ..................................353
Parking Support Brake fu nction (for static
objects) ......................................................... 232
Indicator............................................................. 75
Warning light .............................................. 368
Warning messages...................................238
PCS (Pre-Collision System)
Function ..........................................................203
PCS switch................................................... 205
Warning light ............................................... 367
Warning message ..................................... 374
Personal lights............................................... 278

456 Alphabetical Index
LEXUS NX300h Owners Manu-
al_USA_OM78212U Steering wheel
Adjustment......................................................139
Heated steering wheel............................ 275
Power easy access system .....................134
Stop lights
Replacing light bulbs................................ 353
Storage feature ..............................................281
Storage precautions.....................................281
Stuck
If the vehicle becomes stuck................ 397
Sun visors ........................................................288
Sunglass holder ............................................ 283
Switch
ASC (Active Sound Control) dial ....... 181
Automatic High Beam switch .............. 186
Brake hold switch....................................... 180
BSM (Blind Spot Monitor) main switch
........................................................................... 241
Cruise control switch ................................ 217
Door lock switch......................................... 108
Driving mode select switch .................. 249
Driving position memory switches .....134
Emergency flashers switch .................. 358
EV drive mode switch ................................171
Fog light switch ............................................ 189
Garage door opener switches ..........298
Heated steering wheel............................ 275
HUD (Head-up display) switches ....... 90
Ignition switch............................................... 168
Intuitive parking assist switch................227
LDA switch .....................................................210
Light switches ............................................... 183
Meter control switches ..............................85
Moon roof switches ...................................146
Outside rear view mirror switches ..... 142
Paddle shift switches .................................. 175
Parking brake switch ................................. 177
PCS switch ...................................................205
Power back door opener and closer
switch............................................................... 113
Power switch ................................................ 168
Power window switch ............................... 144 Rear window and outside rear view mir-
ror defoggers switch ............................269
Rear window wiper and washer switch
........................................................................... 194
Seat heater switches................................. 275
“SOS” button............................................... 306
Tire pressure warning reset switch.....341
Vehicle-to-vehicle distance button .... 217
VSC off switch ............................................. 251
Window lock switch.................................. 145
Windshield wipers and washer switch
........................................................................... 189 T
Tachometer........................................................79
Tail lights
Light switch .................................................... 183
Replacing light bulbs ................................353
Theft deterrent system
Alarm..................................................................... 71
Immobilizer system ......................................69
Tire inflation pressure
Maintenance data ..................................... 406
Warning light ...............................................370
Tire information ............................................. 410
Glossary ...........................................................414
Size ......................................................................412
Tire identification number......................... 411
Uniform Tire Quality Grading ..............412
Tire pressure warning system
Function ......................................................... 338
Initializing..........................................................341
Installing tire pres sure warning valves
and transmitters...................................... 340
Registering ID codes ...............................343
Warning light ...............................................370
Tires................................................................... 336
Chains ............................................................ 258
Checking .......................................................336
Glossary ...........................................................414
If you have a flat tire .................................. 377
Inflation pressure ........................... 343, 406