2019 LEXUS UX200 check engine

3877-2. Steps to take in an emergency
7
When trouble arises
coolant is unavailable.
6Start the engine and turn the air
conditioning system on to check
that the radiator cooling fan oper-
ates and to check for coolant leaks
from the radiator or hoses.
The fan operates when the air conditioning
system is turned on immediately after a
cold start. Confirm that the fan is operating
by checking the fan sound and air flow. If it
is difficult to check these, turn the air con-
ditioning system on and off repeatedly.
(The fan may not operate in freezing tem-
peratures.)
7If the fan is not operating:
Stop the engine immediately and
contact your Lexus dealer.
If the fan is operating:
Have the vehicle inspected at the
nearest Lexus dealer.
8
Check if “Engine Coolant Temp
High Stop in a Safe Place See
Owner’s Manual” is shown on the
multi-information display.
If the message does not disappear:
Stop the engine and contact your
Lexus dealer.
If the message is not displayed:
Have the vehicle inspected at the
nearest Lexus dealer.
WARNING
■To prevent an accident or injury when
inspecting under the hood of your
vehicle
Observe the following precautions.
Failure to do so may result in serious
injury such as burns.
●If steam is seen coming from under the
hood, do not open the hood until the
steam has subsided. The engine com-
partment may be very hot.
●Keep hands and clothing (especially a
tie, a scarf or a muffler) away from the
fan and belts. Failure to do so may
cause the hands or clothing to be
caught, resulting in serious injury.
●Do not loosen the coolant reservoir
cap while the engine and radiator are
hot.
High temperature steam or coolant
could spray out.
NOTICE
■When adding engine coolant
Add coolant slowly after the engine has
cooled down sufficiently. Adding cool
coolant to a hot engine too quickly can
cause damage to the engine.
■To prevent damage to the cooling sys-
tem
Observe the following precautions:
●Avoid contaminating the coolant with
foreign matter (such as sand or dust,
etc.).
●Do not use any coolant additive.

3928-1. Specifications
■Oil capacity (Drain and refill [Ref-
erence*])
*: The engine oil capacity is a reference quantity to be used when changing the
engine oil. Warm up and turn off the
engine, wait more than 5 minutes, and
check the oil level on the dipstick.
■Engine oil selection
“Toyota Genuine Motor Oil” is used in
your Lexus vehicle. Use Lexus
approved “Toyota Genuine Motor Oil”
or equivalent to satisfy the following
grade and viscosity.
Oil grade: API SN/RC multigrade
engine oil
Recommended viscosity: SAE 0W-16
SAE 0W-16 is the best choice for good
fuel economy and good starting in cold
weather.
If SAE 0W-16 is not available, SAE
0W-20 oil may be used. However, it
must be replaced with SAE 0W-16 at
the next oil change.
Outside temperature Oil viscosity (0W-16 is explained here
as an example):
• The 0W in 0W-16 indicates the
characteristic of the oil which allows
cold startability. Oils with a lower
value before the W allow for easier
starting of the engine in cold
weather.
• The 16 in 0W-16 indicates the vis- cosity characteristic of the oil when
the oil is at high temperature. An oil
with a higher viscosity (one with a
higher value) may be better suited if
the vehicle is operated at high
speeds, or under extreme load con-
ditions.
How to read oil container label:
API registered marks is added to some
oil containers to help you select the oil
you should use.
Lubrication system
With filter4.9 qt. (4.6 L, 4.0 Imp.qt.)
Without filter4.5 qt. (4.3 L, 3.8 Imp.qt.)
A

434What to do if... (Troubleshooting)
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.379)
 If you lose your electronic keys, the
risk of vehicle theft increases signifi-
cantly. Contact your Lexus dealer
immediately. ( P.379)
 Is the electronic key battery weak or
depleted? ( P.341)
 Is the engine switch in ON?
When locking the doors, turn the engine
switch off. ( P.152)
 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.115) 
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.101)
 Did you press the engine switch
while firmly depressing the brake
pedal? ( P.152)
 Is the shift lever in P? ( P.155)
 Is the electronic key anywhere
detectable inside the vehicle?
( P.114)
 Is the steering wheel unlocked?
( P.152)
 Is the electronic key battery weak or
depleted?
In this case, the engine can be
started in a temporary way.
( P.381)
 Is the battery discharged?
( P.382)
 Is the engine switch in ON?
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 doors cannot be locked or
unlocked
The rear door cannot be opened
If you think something is wrong
The engine does not start
The shift lever cannot be shifted
from P even if you depress the
brake pedal

435What to do if... (Troubleshooting)
If you cannot release the shift lever
by depressing the brake pedal with
the engine switch in ON (P.157)
 It is locked automatically to prevent
theft of the vehicle. ( P.152)
 Is the window lock switch pressed?
The power window except for the
one at the driver’s seat cannot be
operated if the window lock switch
is pressed. ( P.136)
 The auto power off function will be
operated if the vehicle is left in ACC
or ON (the engine is not running)
for a period of time. ( P.154)
 The seat belt reminder light is flash-
ing
Are the driver and the front passen-
ger wearing the seat belts?
( P.362)
 The parking brake indicator is on
Is the parking brake released?
( P.160)
Depending on the situation, other types of warning buzzer may also
sound. (
P.358, 367)
 Did anyone inside the vehicle open
a door during setting the alarm?
The sensor detects it and the alarm
sounds. ( P.64)
To stop the alarm, turn the engine switch to
ON or start the engine.
 Is the message displayed on the
multi-information display?
Check the message on the multi-
information display. ( P.367)
 When a warning light turns on or a
warning message is displayed, refer
to P.358, 367.
 Vehicles without spare tire: Slow
down the vehicle, drive with extra
caution, and take your vehicle to the
nearest Lexus dealer or authorized
tire dealer as soon as possible to
have the tire replaced. ( P.377)
The steering wheel cannot be
turned after the engine is
stopped
The windows do not open or
close by operating the power
window switches
The engine switch is turned off
automatically
A warning buzzer sounds during
drivingAn alarm is activated and the
horn sounds
A warning buzzer sounds when
leaving the vehicle
A warning light turns on or a
warning message is displayed
When a problem has occurred
If you have a flat tire

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

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

446Alphabetical Index
Garage door opener switches .......... 295
Head-up display switch............................. 87
Heated steering wheel.............................. 271
Ignition switch................................................152
Instrument panel light control switches....................................................................74, 78
Intuitive parking assist switch................. 221
Light switch .................................................... 165
LTA (Lane-Tracing Assist) switch ..... 198
Meter control switches ................................81
Moon roof switches ................................... 137
Outside rear view mi rror switches ..... 132
Paddle shift switches ....................... 157, 158
Parking brake switch ................................ 160
PCS OFF switch ......................................... 188
PKSB (Parking Support Brake) switch ......................................................................... 232
Power back door opener and closer switch............................................................. 105
Power door lock switch .......................... 100
Power window switch ...............................135
RCTA switch.................................................227
Rear window and outside rear view mir- ror defoggers switch ............................ 263
Rear window wiper and washer switch ........................................................................... 176
Seat heater switches .................................272
Seat ventilator switches ...........................272
Tire pressure warning reset switch .. 333
Vehicle-to-vehicle distance switch ..205
VSC off switch ............................................ 245
Window lock switch ..................................136
Windshield wiper de-icer switch ...... 266
Windshield wipers and washer switch ........................................................................... 172
T
Tachometer................................................72, 75 Rev indicator .................................................... 77
Rev peak ............................................................ 77
Tail lights Light switch .................................................... 165 Replacing light bulbs ................................346
Theft deterrent system Alarm................................................................... 64
Engine immobilizer system...................... 62
Tire inflation pressure Maintenance data ..................................... 395
Tire inflation pressure display function......................................................................... 330
Warning light .............................................. 359
Tire information ............................................ 399 Glossary ........................................................ 403
Size ..................................................................... 401
Tire identification number....................... 401
Uniform Tire Quality Grading ............402
Tire pressure warning system Function ......................................................... 330
Initializing........................................................333
Installing tire pres sure warning valves
and transmitters....................................... 332
Registering ID codes ...............................335
Warning light .............................................. 359
Tires................................................................... 328 Chains .............................................................. 251
Checking .......................................................328
If you have a flat tire ...................... 370, 377
Inflation pressure ........................... 337, 395
Replacing .......................................................370
Rotating tires ............................................... 330
Run-flat tires......................................330, 377
Size ................................................................... 395
Snow tires ...................................................... 249
Spare tire ........................................................370
Tire pressure warning system ............ 330
Warning light .............................................. 359
Tools........................................................ 280, 371
Top tether strap............................................... 54
Total load capacity ...................................... 390
Towing Dinghy towing ................................................ 151
Emergency towing....................................353
Towing eyelet.............................................. 280
Trailer towing ................................................ 150

Alphabetical Index447
TRAC (Traction Control) ........................ 245
Trailer towing ................................................. 150
TransmissionContinuously variable transmission .. 155
M mode ........................................................... 158
Paddle shift switches ....................... 157, 158
Selecting the driving mode................... 243
Trip meters ................................................ 73, 78
Turn signal lights Replacing light bulbs................................ 346
Turn signal lever .......................................... 159
Wattage..........................................................396
U
USB charging ports.................................... 286
V
Vanity lights.................................................... 285Wattage..........................................................396
Vanity mirrors ............................................... 285
Vehicle data recording .... ................................7
Vehicle identification number ................ 390
Vehicle Stability Control (VSC) ........... 244
Ventilators (seat ventilators)..................... 271
VSC (Vehicle Stabilit y Control) ........... 244
W
Warning buzzers
ABS ..................................................................360
Airbags ...........................................................360
Approach warning......................................210
Brake hold.......................................................361
Brake Override System ......................... 363
Brake system .............................................. 358
Charging system ...................................... 358
Downshifting ................................................. 158
Drive-Start Control .................................. 363
Electric power steering ..........................360
Engine .............................................................359
High coolant temperature ....................359 Intuitive parking assist ................... 226, 361
Low engine oil pressure........................ 358
LTA (Lane Tracing Assist) ....................364
Open door .............................................. 99, 101
Open hood ...................................................... 101
Open window .............................................. 136
PKSA (Parking Support Alert) .............219
PKSB (Parking Support Brake) .........362
Pre-collision braking ................................. 186
RCTA (Rear Cross Tra
ffic Alert) ......362
Seat belt ..............................................362, 363
Warning lights...............................................358 ABS .................................................................. 360
Brake hold operated indicator ............ 361
Brake Override System .........................363
Brake system............................................... 358
Charging system....................................... 358
Drive-Start Control...................................363
Electric power steering.......................... 360
High coolant temperature.................... 359
Intuitive parking assist OFF indicator 361
Low engine oil pressure........................ 358
Low fuel level ...............................................362
LTA indicator ...............................................364
Malfunction indicator lamp .................. 359
Parking brake indicator ........................... 361
PKSB OFF indicator ................................362
Pre-collision system..................................364
RCTA OFF indicator ...............................362
Seat belt reminder light...............362, 363
Slip indicator .................................................. 361
SRS ................................................................... 360
Tire pressure ............................................... 359
Warning messages ..................................... 367
Washer Checking ....................................................... 327
Preparing and checking before winter.......................................................................... 249
Switch.......................................................172, 176
Washing and waxing.................................. 306