battery LEXUS NX300 2020 Repair Manual

4037-2. Steps to take in an emergency
LEXUS NX300 Owners Manual_USA_M78389_en
7
When trouble arises
1Stop the vehicle in a safe place and
turn off the air conditioning system,
and then stop the engine.
2
If you see steam:
Carefully lift the hood after the
steam subsides.
If you do not see steam:
Carefully lift the hood.
3
After the engine has cooled down
sufficiently, inspect the hoses and
WARNING
●Always wash your hands after handling
the battery support, terminals, and
other battery-related parts.
●Do not allow children near the battery.
NOTICE
■When handling jumper cables
When connecting the jumper cables,
ensure that they do not become entan-
gled in the cooling fans or engine drive
belt.
If your vehicle overheats
The following may indicate that
your vehicle is overheating.
 The needle of the engine coolant
temperature gauge ( P.79)
enters the red zone, or a loss of
engine power is experienced.
(For example, the vehicle speed
does not increase.)
 “Engine Coolant Temp High” is
shown on the multi-information
display.
 Steam comes out from under the
hood.
Correction procedures

4118-1. Specifications
LEXUS NX300 Owners Manual_USA_M78389_en
8
Vehicle specifications
*: The coolant capacity is the quantity of reference.
If replacement is necessary, contact your Lexus dealer.
■Spark plug
■Battery
■Charging rates
Cooling system
Capacity*
Gasoline
engine8.3 qt. (7.9 L, 7.0 Imp.qt.)
Intercooler3.1 qt. (2.9 L, 2.6 Imp.qt.)
Coolant type
Use either of the following:
 “Toyota Super Long Life Coolant”
 Similar high-quality ethy lene glycol-based non-
silicate, non-amine, non-nitrite, and nonborate
coolant with long-life hybrid organic acid tech-
nology
Do not use plain water alone.
Ignition system
MakeNGK DILFR7K9G
Gap0.04 in. (0.9 mm)
NOTICE
■Iridium-tipped spark plugs
Use only iridium-tipped spark plugs. Do not adjust the spark plug gap.
Electrical system
Specific gravity reading at 68°F
(20°C):1.25 or higher
If the specific gravity is lower than the standard
value, charge the battery.
Quick charge
Slow charge15 A max.
5 A max.

4278-2. Customization
LEXUS NX300 Owners Manual_USA_M78389_en
8
Vehicle specifications
8-2.Customization
When customizing vehicle features,
ensure that the vehicle is parked in a
safe place with the shift lever in P and
the parking brake set.
■Changing using the Remote Touch
1
Press the “MENU” button on the
Remote Touch.
2
Select on the menu screen and
select “Vehicle”.
3
Select “Vehicle Customization” or
“Drive mode customization”.
Various setting can be changed. Refer
to the list of settings that can be
changed for details.
■Changing using the multi-informa-
tion display
1
Press or of the meter con-
trol switches and select .
2
Press or of the meter con-
trol switches, select the item, and
then press .
3
Press or of the meter con-
trol switches, select the desired set-
ting, and then press .
To go back to the previous screen or
exit the customize mode, press .
Some function settings are changed simultaneously with other functions being cus-
tomized. Contact your Lexus dealer. Settings that can be changed using the Remote Touch
Settings that can be changed us ing the multi-information display
Customizable features
Your vehicle includes a variety of
electronic features that can be per-
sonalized to suit your preferences.
The settings of these features can
be changed using the multi-infor-
mation display, the Remote Touch,
or at your Lexus dealer.
Customizing vehicle features
WARNING
■Cautions during customization
As the engine needs to be running
during customization, ensure that the
vehicle is parked in a place with ade-
quate ventilation. In a closed area such as
a garage, exhaust gases including harm-
ful carbon monoxide (CO) may collect
and enter the vehicle. This may lead to
death or a serious health hazard.
NOTICE
■During customization
To prevent battery discharge, ensure that
the engine is running while customizing
features.
Customizable features
A
B

4388-3. Initialization
LEXUS NX300 Owners Manual_USA_M78389_en
8-3.Initialization
*:If equipped
Items to initialize
The following items must be initialized for normal system operation after such
cases as the battery being reconnected, or maintenance being performed on
the vehicle.
List of the items to initialize
ItemWhen to initializeReference
Parking Support Brake function (for
static objects)
*After reconnecting or changing the
batteryP.247
Message indicating maintenance is
required (U.S.A. only)After the maintenance is performedP.326
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.349
Oil maintenanceAfter the maintenance is performedP.337
Lexus parking assist monitor*
• After reconnecting or changing the 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.111
Power window
When functioning abnormally
P.138
Moon roof*P.141

452What to do if... (Troubleshooting)
LEXUS NX300 Owners Manual_USA_M78389_en
1-1.What to do if... (Troubleshooting)What to do if... (Troubleshooting)
If you lose your mechanical keys,
new genuine mechanical keys can
be made by your Lexus dealer.
( P.396)
 If you lose your electronic keys, the
risk of vehicle theft increases signifi-
cantly. Contact your Lexus dealer
immediately. ( P.396)
 Is the electronic key battery weak or
depleted? ( P.356)
 Is the engine switch in IGNITION
ON mode?
When locking the doors, turn the engine
switch off. ( P.166)
 Is the electronic key left inside the
vehicle?
When locking the doors, make sure that
you have the electronic key on your per-
son.
The function may not operate prop-
erly due to the condition of the radio
wave. ( P.118)
 Is the child-protector lock set?
The rear door cannot be opened
from inside the vehicle when the
lock is set. Open the rear door from
outside and then unlock the child-
protector lock. ( P.103)
 Did you press the engine switch
while firmly depressing the brake
pedal? ( P.165)
 Is the shift lever in P? ( P.165)
 Is the electronic key anywhere
detectable inside the vehicle?
( P.116)
 Is the steering wheel unlocked?
( P.165)
 Is the electronic key battery weak or
depleted?
In this case, the engine can be
started in a temporary way.
( P.398)
 Is the battery discharged?
( P.400)If you have a problem, check the
following before contacting your
Lexus dealer.
The doors cannot be locked,
unlocked, opened or closed
You lose your keys
The electronic key does not oper-
ate properly
The doors cannot be locked or
unlocked
The rear door cannot be opened
If you think something is wrong
The engine does not start

456Alphabetical Index
LEXUS NX300 Owners Manual_USA_M78389_en
Battery
If the battery is discharged ................... 400
Preparing and checking before winter......................................................................... 266
Warning light ............................................... 375
Blind Spot Monitor (BSM)....................... 250 Blind Spot Monitor function................. 252
Rear Cross Traffic Alert function....... 254
Bottle holders................................................ 293
Brake Brake Hold ..................................................... 175
Fluid ....................................................................413
Parking brake ................................................ 172
Warning light ............................................... 376
Brake assist .................................................... 260
Brake Hold ....................................................... 175
Break-in tips..................................................... 147
Brightness control Instrument panel light control ..................81
BSM (Blind Spot Monitor)....................... 250 Blind Spot Monitor function................. 252
Rear Cross Traffic Alert function....... 254
BSM (Blind Spot Monitor) main switch .......................................................................... 250
C
Card key ............................................................ 96
Care Aluminum wheels ...................................... 320
Exterior ........................................................... 320
Interior ............................................................. 323
Seat belts........................................................ 323
Cargo capacity.........................152, 154, 408
Cargo hooks ................................................. 295
Cargo net hooks .......................................... 295
Chains ...............................................................267 Child restraint system................................... 48
Booster seats installation ..........................55
Convertible seats installation .................. 53
Front passenger occupa nt classification
system................................................................ 41
Infant seats definition ................................... 53
Infant seats installation ................................50
Installing CRS with LATCH anchors . 57
Installing CRS with seat belts .................. 52
Installing CRS with top tether strap.....58
LATCH anchors ........................................... 57
Child safety ....................................................... 48 Airbag precautions ...................................... 37
Back door precautions ............................ 104
Battery precautions ....................... 341, 402
Child restraint system .................................48
How your child should wear the seat belt............................................................................. 27
Installing child restraints.............................48
Moon roof precautions.............................142
Power window lock switch .................... 139
Power window precautions .................. 139
Rear door child-protectors ................... 103
Removed key battery precautions....357
Seat belt extender precautions.............. 27
Seat belt precautions .................................. 26
Seat heater precautions..........................287
Child-protectors........................................... 103
Cleaning ...............................................320, 323 Aluminum wheels ......................................320
Exterior............................................................320
Interior ............................................................. 323
Seat belts ........................................................ 323
Clock ................................................................ 299
Compass ...........................................................315
Condenser ..................................................... 339
Console box .................................................. 293

458Alphabetical Index
LEXUS NX300 Owners Manual_USA_M78389_en
Drive information ........................................... 83
Drive-start control ..............................147, 168
Driver’s seat belt reminder light ............ 379
Driver’s seat position memory .................128
Driving Break-in tips ................................................... 147
Correct posture ............................................ 25
Driving mode select switch ..................258
Procedures .....................................................146
Winter drive tips......................................... 266
Driving position memory............................128 Memory recall function ............................ 129
Dynamic radar cruise control with full- speed rangeFunction .......................................................... 225
Warning message.....................................384
E
Eco Driving Indicator.................................... 78
Eco mode........................................................ 258
EDR (Event data recorder) ............................7
Electric Power Steering (EPS) Function ..........................................................260
Warning light ................................................377
Electronic key Battery-saving function ..............................117
If the electronic key does not operate properly....................................................... 397
Replacing the battery...............................356
Emergency flashers .................................... 366
Emergency, in case of If a warning buzzer sounds .................. 375
If a warning light turns on ...................... 375
If a warning message is displayed.....384
If the battery is discharged ................... 400
If the electronic key does not operate properly....................................................... 397 If the engine will not start....................... 395
If the fuel filler do
or cannot be opened
.......................................................................... 397
If the vehicle is trapped in rising water .......................................................................... 367
If you have a flat tire ..................................387
If you lose your keys ................................ 396
If you think something is wrong.......... 373
If your vehicle becomes stuck ............ 406
If your vehicle has to be stopped in an emergency ................................................ 366
If your vehicle needs to be towed .... 369
If your vehicle overheats ....................... 403
Engine Accessory mode......................................... 166
Compartment..............................................335
Engine switch ................................................ 165
Hood ................................................................333
How to start the engine ........................... 165
Identification number .............................. 409
If your vehicle has to be stopped in an emergency ................................................ 366
Ignition switch (Engine switch) ............ 165
Overheating ................................................ 403
Engine compartment cover .................... 336
Engine coolant Capacity ............................................................ 411
Checking ...................................................... 338
Preparing and checking before winter..........................................................................266
Warning light ............................................... 376
Engine coolant temperature gauge ........79
Engine immobilizer system ........................ 68
Engine oil Capacity .......................................................... 410
Checking .......................................................336
Warning light ...............................................375

460Alphabetical Index
LEXUS NX300 Owners Manual_USA_M78389_en
Heated steering wheel .............................. 287
Heaters
Automatic air conditioning system ... 279
Heated steering wheel............................ 287
Outside rear view mirrors ......................136
Seat heaters .................................................. 287
High mounted stoplight Replacing light bulb.................................. 362
Hill-start assist control ............................... 260
Hood ................................................................. 333 Open ............................................................... 333
Hooks Cargo hooks................................................ 295
Retaining hooks (floor mat)......................24
Horn ....................................................................134
I
I/M test ............................................................ 330
Identification Engine .............................................................409
Vehicle ........................................................... 408
Ignition switch (Engine switch) ................165
Illuminated entry system ........................... 289
Immobilizer system ........................................ 68
Indicators ............................................................74
Initialization Items to initialize .........................................438
Inside rear view mirror ................................134
Instrument panel light control .....................81
Interior lights.................................................. 289
Intuitive parking assist Function .......................................................... 236
Warning message..................................... 238
J
JackPositioning a floor jack............................ 333
Vehicle-equipped jack .......................... 388 Jack handle ....................................................388
Jam protection function
Moon roof ........................................................ 141
Power back door closer ............................. 111
Power windows ........................................... 138
Rear seats ........................................................ 127
K
Keyless entrySmart access system with push-button start ................................................................... 116
Wireless remote control ........................... 97
Keys...................................................................... 96 Battery-saving function.............................. 117
Electronic key .................................................96
Engine switch ................................................ 165
If the electronic key does not operate properly ....................................................... 397
If you lose your keys ................................ 396
Key number plate .........................................96
Keyless entry ........................................ 100, 116
Mechanical key .............................................. 96
Replacing the battery .............................. 356
Warning buzzer ............................................ 117
Wireless remote control key .................. 97
Knee airbags .................................................... 32
L
Lane Departure Alert with steering control (LDA) ..............................................................215
Lane Tracing Assist (LTA) ....................... 206
Language (multi-information display) 430
LATCH anchors ............................................. 57
LDA (Lane Departure Alert with steering control) ...........................................................215

LEXUS NX300 Owners Manual_USA_M78389_en
Alphabetical Index463
Rear turn signal lights
Replacing light bulbs................................ 362
Turn signal lever ........................................... 172
Rear view mirror Inside rear view mirror..............................134
Outside rear view mirrors ......................136
Rear window defogger .............................280
Rear window wiper...................................... 189
Refueling ............................................................ 191 Capacity .........................................................409
Fuel types.......................................................409
Opening the fuel tank cap ....................... 191
When the fuel filler door cannot be opened ........................................................ 397
Remote Touch ...............................................274
Replacing Electronic key battery..............................356
Fuses ............................................................... 358
Light bulbs..................................................... 362
Tires .................................................................. 387
Reporting safety defects for U.S. owners .......................................................................... 440
Resetting the message indicating mainte- nance is required ...................................... 326
RSA (Road Sign Assist) ............................ 223
S
S-FLOW mode ............................................ 284
Safety Connect.................................................. 61
Seat belts............................................................ 26 Adjusting the seat belt shoulder anchor height............................................................... 30
Automatic Locking Retractor ................ 28
Child restraint system installation ......... 48
Cleaning and maintaining the seat belt ......................................................................... 323 Emergency Locking Retractor .............. 28
How to wear your seat belt ..................... 27
How your child should wear the seat belt
............................................................................. 27
Pregnant women, proper seat belt use ............................................................................. 26
Reminder light and buzzer ...... 379, 380
Seat belt extender......................................... 27
Seat belt instructions for Canadian own- ers .................................................................. 440
Seat belt pretensioners ..............................30
SRS warning light....................................... 376
Seat heaters ................................................... 287
Seat position memory..................................128
Seat ventilators .............................................288
Seating capacity.............................................154
Seats Adjustment ............................................122, 123
Adjustment precautions .................122, 124
Child seats/child restraint system installa-tion ....................................................................48
Cleaning ......................................................... 323
Driving position memory ........................ 128
Folding down the rear seatbacks ........124
Front seat heaters ......................................287
Head restraint ................................................. 131
Power easy access system .................... 128
Properly sitting in the seat ........................ 25
Rear seat heaters ....................................... 287
Seat position memory .............................. 128
Seat ventilators ........................................... 288
Sécurité de l’enfant Précautions avec les coussins gonflables.......................................................................... 444

LEXUS NX300 Owners Manual_USA_M78389_en
Alphabetical Index467
Wheels ............................................................. 353
Replacing wheels.......................................353
Size......................................................................413
Window glasses ............................................ 138
Window lock switch .....................................139
Windows Power windows........................................... 138
Rear window defogger ..........................280
Washer ..................................................184, 189
Windshield wiper de-ice r ........................ 284
Windshield wipers Intermittent windshield wipers ............. 184
Rain-sensing windshield wipers.......... 186
Winter driving tips....................................... 266
Wireless charger .......................................... 301
Wireless remote control key ......................97 Battery-saving function ..............................117
Locking/Unlocking ..................................... 97
Panic mode...................................................... 98
Replacing the battery...............................356
For information regarding the equipment listed below, refer to
the “NAVIGATION AND MULTI-
MEDIA SYSTEM OWNER’S
MANUAL”.
· Audio/visual system
· Navigation system
· Lexus parking assist monitor
· Panoramic view monitor
· Lexus Enform