engine overheat LEXUS NX300 2020 User Guide

1904-3. Operating the lights and wipers
LEXUS NX300 Owners Manual_USA_M78389_en
4 Washer/wiper dual opera-
tion
Pushing the lever operates the wiper and
washer.
The wiper will automatically operate a cou-
ple of times after the washer squirts.
Type B
1
Off
2
Intermittent operation
3
Normal operation 4
Washer/wiper dual opera-
tion
Pushing the lever oper ates the wiper and
washer.
The wiper will automatically operate a cou-
ple of times after the washer squirts.
■The rear window wiper and washer can
be operated when
The engine switch is in IGNITION ON
mode.
NOTICE
■When the washer fluid tank is empty
Do not operate the switch continually as
the washer fluid pump may overheat.
■When a nozzle becomes blocked
In this case, contact your Lexus dealer.
Do not try to clear it with a pin or other
object. The nozzle will be damaged.
■To prevent battery discharge
Do not leave the wiper on longer than
necessary when the engine is off.

2885-2. Using the air conditioning system and defogger
LEXUS NX300 Owners Manual_USA_M78389_en
Vehicles with seat ventilators
Each time the switch is pressed, the opera-
tion condition changes as follows.
Hi (3 segments lit)  Mid (2 segments lit)
 Lo (1 segment lit)  Off
The indicator (amber) and level indicator
(green) light up during operation.
■Rear
Each time the switch is pressed, the
operation condition changes as fol-
lows.
Hi (3 segments lit)  Mid (2 segments
lit)  Lo (1 segment lit)  Off
The level indicator (amber) lights up
during operation.
■Operation condition
The seat heaters can be used when the
engine switch is in IGNITION ON mode.
Each time the switch is pressed, the
operation condition changes as fol-
lows.
Hi (3 segments lit)  Mid (2 segments
lit)  Lo (1 segment lit)  Off
The indicator (green) and level indicator
(green) light up during operation.
■Operation condition
The engine switch is in IGNITION ON
mode.
A
A
WARNING
■To prevent causes of overheating and
minor burn injuries
Observe the following precautions when
using a seat heater
●Do not cover the seat with a blanket or
cushion when using the seat heater.
●Do not use seat heater more than nec-
essary.
Seat ventilators (front)
A

365
LEXUS NX300 Owners Manual_USA_M78389_en
7
7
When trouble arises
When trouble arises
7-1. Essential information
Emergency flashers.................. 366
If your vehicle has to be stopped in an emergency .......................... 366
If the vehicle is trapped in rising water............................................ 367
7-2. Steps to take in an emergency If your vehicle needs to be towed........................................................ 369
If you think something is wrong ........................................................ 373
Fuel pump shut off system ..... 374
If a warning light turns on or a warning buzzer sounds ....... 375
If a warning message is displayed ........................................................ 384
If you have a flat tire.................. 387
If the engine wi ll not start .......395
If you lose your keys ................. 396
If the fuel filler door cannot be opened........................................ 397
If the electronic key does not operate properly .................... 397
If the vehicle battery is discharged ........................................................ 400
If your vehicle overheats ........ 403
If the vehicle becomes stuck 406

3767-2. Steps to take in an emergency
LEXUS NX300 Owners Manual_USA_M78389_en
■High coolant temperature warning light* (warning buzzer)
*: This light illuminates on the multi-information display.
■Brake system warning light
■Malfunction indicator lamp
■SRS warning light
Warning lightDetails/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 ( P.403)
Warning lightDetails/Actions
(Yellow)
Indicates a malfunction in the electric parking brake
 Have the vehicle inspected by your Lexus dealer
immediately.
Warning lightDetails/Actions
(U.S.A.)
(Canada)
Indicates a malfunction in:
 The electronic engine control system;
 The electronic throttle control system; or
 The electronic automatic transmission control system
 Have the vehicle inspected by your Lexus dealer
immediately.
Warning lightDetails/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.

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

LEXUS NX300 Owners Manual_USA_M78389_en
Alphabetical Index457
Consumption screen .................................... 92
Coolant
Capacity .............................................................411
Checking .......................................................338
Preparing and checking before winter......................................................................... 266
Warning light ............................................... 376
Cooling system............................................. 338 Engine overheating ..................................403
Cornering lights ............................................ 180
Coussins gonflables Modification et élimin ation en fin de vie
des coussins gonflables ......................448
Précautions avec les coussins gonflables latéraux ........................................................ 444
Précautions avec les coussins gonflables latéraux et rideau.................................... 444
Précautions avec les coussins gonflables pour votre enfant.................................... 444
Précautions avec les coussins gonflables rideau ........................................................... 444
Précautions générales avec les coussins gonflables ................................................... 444
Cruise control Dynamic radar cruise control with full-speed range .............................................. 225
Cup holders ................................................... 293
Curtain shield airbags .................................. 32
Customizable features ...............................427
D
Daytime running light system ................... 179
Deck board .................................................... 296
Deck under tray ........................................... 296 Defogger
Outside rear view mirrors.................... 280
Rear window ............................................... 280
Windshield ................................................... 280
Differential ........................................................ 412
Dimension ......................................................408
Dinghy towing.................................................164
Display BSM (Blind Spot Monitor)................... 250
Drive information ..........................................83
Dynamic radar cruise control with full-
speed range .............................................. 225
Head-up display........................................... 88
Intuitive parking assist ..............................236
LDA (Lane Departure Alert with steering control) ......................................................... 215
LTA (Lane Tracing Assist) ................... 206
Multi-information display .......................... 82
Warning messages.................................. 384
Do-it-yourself maintenance ......................331
Door lock Back door ....................................................... 105
Side doors ...................................................... 100
Smart access system with push-button start ................................................................... 116
Wireless remote control ........................... 97
Doors Automatic door lock ing and unlocking
system............................................................ 103
Back door ....................................................... 104
Door glasses ................................................. 138
Door lock ........................................................100
Outside rear view mirrors...................... 136
Rear door child-protectors ................... 103
Side doors ...................................................... 100

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

462Alphabetical Index
LEXUS NX300 Owners Manual_USA_M78389_en
O
Odometer ..........................................................79
Oil
Engine oil ........................................................ 410
Rear differential oil ...................................... 412
Transfer oil....................................................... 412
Opener Back door........................................................107
Fuel filler door................................................. 191
Hood................................................................ 333
Outside rear view mirrors .........................136 Adjusting and folding ................................136
Blind Spot Monitor (BSM) ...................250
Linked mirror functi on when reversing
........................................................................... 137
Mirror position memory...........................128
Outside rear view mirror defoggers280
Outside temperature display .....................79
Overheating .................................................. 403
P
Paddle shift switches ....................................170
Panic mode ....................................................... 98
Parking brake Operation........................................................ 172
Parking brake engaged warning buzzer/message ........................................................ 174
Warning light ............................................... 379
Parking lights Light switch .....................................................178
Replacing light bulbs................................ 362
Parking Support Brake function (for static objects) ........................................................... 241Indicator ....................................................75, 76
Warning light ............................................... 378
Warning messages .................................. 247 PCS (Pre-Collision System)
Function ........................................................... 199
PCS switch..................................................... 201
Warning light ............................................... 377
Warning message .................................... 384
Personal lights............................................... 289 Switch.............................................................. 290
PKSA (Parking Support Alert) .............. 235 Intuitive parking assist ..............................236
Power back door opener and closer ....107
Power easy access system ........................128
Power outlet ..................................................300
Power steering (Electric Power Steering system) .......................................................... 260Warning light ............................................... 377
Power windows Door lock linked window operation . 139
Jam protection function ........................... 138
Operation .............................................138, 139
Window lock switch.................................. 139
Pre-Collision System (PCS) Function ........................................................... 199
PCS switch..................................................... 201
Warning light ............................................... 377
Warning message .................................... 384
R
Radar cruise control (dynamic radar cruise control with full-speed range)............. 225
Radiator ........................................................... 339
Rear Cross Traffic Alert ........................... 254
Rear seat Folding down the rear seatbacks ........124
Rear side marker lights Light switch .................................................... 178
Replacing light bulbs ................................362