engine overheat LEXUS UX200 2019 User Guide

1744-3. Operating the lights and wipers
time the lever is pulled.
■The windshield wipers and washer can
be operated when
The engine switch is in ON.
■Effects of vehicle speed on wiper opera-
tion (vehicles with rain-sensing wind-
shield wipers)
Vehicle speed affects the Intermittent wiper
interval.
■Raindrop sensor (vehicles with rain-
sensing windshield wipers)
●The raindrop sensor judges the amount
of raindrops.
An optical sensor is adopted. It may not
operate properly when sunlight from the
rising or setting of the sun intermittently
strikes the windshield, or if bugs, etc. are
present on the windshield.
●If the wiper switch is turned to the AUTO
position while the engine switch is in ON,
the wipers will operate once to show that
AUTO mode is activated.
●If the temperature of the raindrop sensor
is 194°F (90°C) or higher, or 5°F (-15°C)
or lower, automatic operation may not
occur. In this case, operate the wipers in
any mode other than AUTO mode.
■If no windshield washer fluid sprays
Check that the washer nozzles are not
blocked, if there is washer fluid in the
washer fluid tank.
When the windshield wipers are not
being used, they retract to below the
hood. To enable the windshield wipers
to be lifted when parking in cold condi-
tions or when replacing a windshield
wiper insert, change the rest position of
WARNING
■Caution regarding the use of wind-
shield wipers in AUTO mode (vehi-
cles with rain-sensing windshield
wipers)
The windshield wipers may operate
unexpectedly if the sensor is touched or
the windshield is subject to vibration in
AUTO mode. Take care that your fingers,
etc. do not become caught in the wind-
shield wipers.
■Caution regarding the use of washer
fluid
When it is cold, do not use the washer
fluid until the windshield becomes warm.
The fluid may freeze on the windshield
and cause low visibility. This may lead to
an accident, resulting in death or serious
injury.
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 wipers on longer than
necessary when the engine is off.
Changing the windshield wiper
rest position/Lifting the wind-
shield wipers

1774-3. Operating the lights and wipers
4
Driving
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 wipers on longer than
necessary when the engine is off.

2725-3. Using the air conditioning system and defogger
■Seat heaters
Turns the seat heaters on/off
Each time the switch is pressed, the opera-
tion condition changes as follows.
AUTO (lit)  Hi (3 segments lit)  Mid
(2 segments lit)  Lo (1 segment lit) 
Off
The AUTO indicator and/or level indi-
cator illuminates during operation.
■Seat ventilators
Turns the seat ventilators on/off
Each time the switch is pressed, the opera-
tion condition changes as follows.
AUTO (lit)  Hi (3 segments lit)  Mid
(2 segments lit)  Lo (1 segment lit) 
Off
The AUTO indicator and/or level indi-
cator illuminates during operation.
■The seat ventilators can be used when
The engine switch is in ON.
■Air conditioning system-linked control
mode
When the seat ventilator fan speed level is
Hi, the seat ventilator fan speed becomes
higher according to the fan speed of the air
conditioning system.
■Customization
Settings for the seat heaters and ventilators
can be changed. (Customizable features:
 P.417)
■Main display
Using the touchpad of the Remote
Touch, select the button on the screen.
to can be adjusted by perform-
ing the following operations.
Flick operation: Move the pointer to
the desired item and flick the touchpad
up or down.
The item can be adjusted by one level.
Trace operation: After selecting the
desired item, trace the pad surface.
The item can be adjusted by the amount
that you trace.
Trace operation cannot be used while driving.
Seat heaters and ventilators
(front seats)
A
B
A
B
WARNING
■To prevent causes of overheating and
minor burn injuries
Observe the following precautions when
using the seat heaters.
●Do not cover the seat with a blanket or
cushion when using the seat heater.
●Do not use seat heater more than nec-
essary.
Control screen
AC

349
7
7
When trouble arises
When trouble arises
7-1. Essential informationEmergency flashers.................. 350
If your vehicle has to be stopped in an emergency .......................... 350
If the vehicle is trapped in rising water............................................. 351
7-2. Steps to take in an emergency If your vehicle needs to be towed........................................................ 353
If you think something is wrong ........................................................ 356
Fuel pump shut off system ..... 357
If a warning light turns on or a warning buzzer sounds ....... 358
If a warning message is displayed ........................................................ 367
If you have a flat tire (vehicles with spare tire) .................................. 370
If you have a flat tire (vehicles without spare tire) .................. 377
If the engine wi ll not start .......378
If you lose your keys ................. 379
If the fuel filler door cannot be opened........................................ 380
If the electronic key does not operate properly .................... 380
If the vehicle battery is discharged ........................................................ 382
If your vehicle overheats ........ 386
If the vehicle becomes stuck 388

3867-2. Steps to take in an emergency
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 radiator core (radiator) for any
leaks.
Radiator
Cooling fan
If a large amount of coolant leaks, immedi-
ately contact your Lexus dealer.
4
The coolant level is satisfactory if it
is between the “FULL” and “LOW”
lines on the reservoir.
Reservoir
“FULL” line
“LOW” line
5 Add coolant if necessary.
Water can be used in an emergency if
If your vehicle overheats
The following may indicate that
your vehicle is overheating.
The engine coolant temperature
gauge ( P.72, 75) enters the red
zone, or a loss of engine power is
experienced. (For example, the
vehicle speed does not increase.)
 “Engine Coolant Temp High Stop
in a Safe Place See Owner’s
Manual” is shown on the multi-
information display.
 Steam comes out from under the
hood.
Correction procedures
A
B
A
B
C

438Alphabetical Index
C
Card key ............................................................ 94
CareAluminum wheels ......................................306
Exterior ...........................................................306
Interior .............................................................309
Seat belts........................................................309
Cargo capacity............................................... 147
Cargo hooks .................................................280
Center Display ............................................. 256
Chains ................................................................251
Child-protectors............................................. 101
Child restraint system................................... 44 Fixed with a LATCH system .................. 52
Fixed with a seat belt................................... 48
Front passenger occupant classification system ............................................................. 39
Points to remember .................................... 44
Riding with children ..................................... 44
Types of child restraint system installation method ........................................................... 46
Using an anchor bracket .......................... 54
Child safety ....................................................... 44 Airbag precautions...................................... 35
Back door precautions.............................102
Battery precautions ..................... 326, 385
Child restraint system................................. 44
Heated steering wheel and seat heater precautions.................................................. 271
How your child should wear the seat belt .............................................................................27
Moon roof precautions ............................139
Power window lock switch.....................136
Power window precautions ...................136
Rear door child-protectors ..................... 101
Removed key battery precautions ... 342
Seat belt extender precautions ..............27
Seat belt precautions .................................. 52
Cleaning.............................................. 306, 309 Aluminum wheels ......................................306
Exterior ...........................................................306 Interior ............................................................ 309
Radar sensor ...................................... 180, 215
Seat belts ....................................................... 309
Clock ................................................72, 75, 285
Coat hooks..................................................... 294
Compass .......................................................... 301
Condenser ..................................................... 324
Console box .................................................. 278
Consumption screen .................................... 90
Continuously variable transmission...... 155
Coolant Capacity .........................................................393
Checking ....................................................... 323
Preparing and checking before winter.......................................................................... 249
Cooling system............................................. 323 Engine overheating.................................. 386
Cornering lights ............................................. 167 Replacing light bulbs ................................346
Cruise control Dynamic radar cruise control with full-
speed range ..............................................204
Cup holders ................................................... 278
Current fuel consumption ............................81
Curtain shield airbags .................................. 30
Customizable features ..............................408
D
Daytime running light system ...................165
Deck board ......................................................281
Deck under tray ...........................................280
Defogger Outside rear view mirrors.....................263
Rear window ................................................263
Windshield ....................................................263
Dimension ...................................................... 390
Dinghy towing.................................................. 151
Display BSM (Blind Spot Monitor)......................214
Dynamic radar cruise control with full-
speed range ..............................................204
Head-up display............................................86

Alphabetical Index439
Intuitive parking assist.............................. 220
LTA (Lane-Tracing Assist) .................... 198
Multi-information display .......................... 79
RCTA ...............................................................227
Warning messages .................................. 367
Distance until next engine oil change ...73, 78
Do-it-yourself maintenance ...................... 317
Door lock Doors.................................................................. 98
Smart access system with push-button start ....................................................................114
Wireless remote control........................... 96
Doors Automatic door lock ing and unlocking
system ............................................................. 101
Back door........................................................102
Door glasses ..................................................135
Door lock.......................................................... 98
Open door warning buzzer .......... 99, 101
Outside rear view mirrors ...................... 132
Rear door child-protectors ..................... 101
Side doors ........................................................ 98
Drive distance ....................................................81
Drive info 1/Drive info 2 ................................81
Driver’s seat position memory .................123
Drive-start control ........................................143
Driving................................................................ 142 Break-in tips ................................................... 143
Correct driving posture ............................ 25
Driving mode select switch .................. 243
Procedures ..................................................... 142
Winter drive tips......................................... 249
Driving information display ..........................81
Driving position memory............................123 Memory recall function ............................125
Driving range .....................................................81
Driving support system information display ............................................................................. 83
Dynamic radar cruise control with full- speed range................................................ 204Warning message........................... 212, 367E
Eco drive mode ............................................ 243
Eco Driving Indicator............................82, 89
Eco Driving Indicator Light ........................ 82
EDR (Event data recorder) ........................... 8
Elapsed time .......................................................81
Electric Power Steering (EPS) Function ..........................................................245
Warning light .............................................. 360
Electronic key .................................................. 94 Battery-saving function.............................. 115
If the electronic key does not operate properly ...................................................... 380
Replacing the battery .................................341
Emergency, in case of If a warning buzzer sounds.................. 358
If a warning light turns on...................... 358
If a warning message is displayed ..... 367
If the battery is discharged ....................382
If the electronic key does not operate properly ...................................................... 380
If the engine will not start........................378
If the fuel filler do or cannot be opened
......................................................................... 380
If the vehicle is trapped in rising water ........................................................................... 351
If you have a flat tire ...................... 370, 377
If you lose your keys ................................. 379
If you think something is wrong......... 356
If your vehicle becomes stuck ............ 388
If your vehicle has to be stopped in an emergency ................................................ 350
If your vehicle needs to be towed .....353
If your vehicle overheats ....................... 386
Emergency flashers ....................................350
Engine ACC.................................................................. 154
Compartment................................................321
Engine switch ................................................ 152
Hood ................................................................. 319
How to start the engine ........................... 152

440Alphabetical Index
Identification number .................................391
If your vehicle has to be stopped in an
emergency ............................................... 350
Ignition switch (engine switch) .............152
Overheating.................................................386
Tachometer ............................................. 72, 75
Engine coolant.............................................. 323 Capacity ......................................................... 393
Checking ....................................................... 323
Preparing and checking before winter......................................................................... 249
Engine coolant temperature gauge 72, 75
Engine immobilizer system ........................ 62
Engine oil Capacity ......................................................... 392
Checking ......................................................... 321
Warning light .............................................. 358
Engine oil maintenance data .................. 323
Engine switch Auto power off function ...........................154
Changing the engine switch modes..154
If your vehicle has to be stopped in an
emergency ............................................... 350
Starting the engine ......................................152
EPS (Electric Power Steering) .............. 245 Function .......................................................... 245
Warning light ...............................................360
Event data recorder (EDR) ........................... 8
F
Flat tire .................................................. 370, 377 Tire pressure warning system .............330
Floor mats .......................................................... 24
Fluid Automatic transmission .......................... 394
Brake................................................................ 394
Washer ........................................................... 327
Fog lights Replacing light bulbs................................ 346
Switch ..................................................................171
Front passenger occupant classification system .............................................................. 39 Front seats ......................................................... 121
Adjustment ....................................................... 121
Cleaning ........................................................ 309
Correct driving posture ............................ 25
Driving position memory .........................123
Head restraints..............................................126
Memory recall function............................ 125
Power easy access system .....................123
Seat heaters .................................................. 272
Seat position memory ...............................123
Seat ventilators ............................................ 272
Front side marker lights Light switch .................................................... 165
Front turn signal lights Replacing light bulbs ................................346
Turn signal lever .......................................... 159
Wattage ......................................................... 396
Fuel Capacity .......................................................... 391
Fuel gauge ................................................72, 75
Information .................................................... 397
Refueling.......................................................... 178
Type ................................................................... 391
Warning light ...............................................362
Fuel consumption Average fuel economy ............................... 81
Current fuel consumption ......................... 81
Fuel filler door .................................................178 Refueling.......................................................... 178
When the fuel filler door cannot be
opened........................................................ 380
Fuel gauge ..................................................72, 75
Fuses ................................................................. 343
G
Garage door opener ................................. 295
Gauges ........................................................72, 75
G-force............................................................... 82
Glove box ....................................................... 278
Glove box light ............................................. 278
Grocery bag hooks ....................................280

Alphabetical Index443
Multi-information display .............................79Audio system-linked display................... 83
Drive information 1/Drive information 2..............................................................................81
Driving information display........................81
Driving support system information dis- play ................................................................... 83
Dynamic radar cruise control with full- speed range .............................................. 204
Eco Driving Indicator ................................. 82
G-force.............................................................. 82
LTA (Lane-Tracing Assist) .................... 198
Menu icons ......................................................80
Meter control switches ................................81
Navigation system-linked display ........ 83
Pop-up display............................................... 79
Settings .............................................................. 84
Suggestion function.....................................85
Units .................................................................... 83
Warning messages .................................. 367
N
Navigation system-linked display... 83, 86
Noise from under vehicle ...............................6
O
Odometer ................................................. 73, 78
Odometer and trip meter display “ODO TRIP” switch ............................74, 78
Display items ...........................................73, 78
Pop-up display.......................................74, 78
“ODO TRIP” switch .............................. 74, 78
Oil Engine oil ....................................................... 392
Opener Back door............................................ 103, 105
Fuel filler door................................................178
Hood..................................................................319
Outside rear view mirrors .........................132 Adjustment...................................................... 132
BSM (Blind Spot Monitor) ..................... 214 Folding.............................................................. 133
Linked mirror functi
on when reversing
........................................................................... 133
Mirror position memory ...........................123
Outside rear view mirror defoggers263
RCTA function ............................................ 227
Outside temperature.............................72, 75
Overheating .................................................. 386
P
Paddle shift switches ......................... 157, 158
Panic mode ....................................................... 96
Parking assist sensors (intuitive parking assist) ............................................................. 220
Parking brake................................................. 160 Operation ....................................................... 160
Parking brake engaged warning buzzer............................................................................162
Warning light ................................................ 361
Warning message .......................................162
Parking lights Light switch .................................................... 165
Replacing light bulbs ................................346
Parking Support Brake function (rear- crossing vehicles) ........................... 231, 240Function ..........................................................240
Parking Support Brake function (static objects) ............................................... 231, 235Function ..........................................................235
PCS (Pre-Collision System) .................... 186 Function ........................................................... 186
PCS OFF switch ......................................... 188
Warning light ...............................................364
Personal lights................................................274
PKSA (Parking Support Alert) ................219
PKSB (Parking Support Brake)...............231 Warning message ..................................... 234
Power back door opener and closer ... 105
Power easy access system ........................123
Power outlets ................................................ 286
Power steering (Electric Power Steering system) .......................................................... 245