coolant temperature LEXUS UX200 2019 User Guide

3597-2. Steps to take in an emergency
7
When trouble arises
■Malfunction indicator lamp (warning buzzer)
■High coolant temperature warning light* (warning buzzer)
*: This light illuminates on the multi-information display.
■Tire pressure warning light
■Brake system warning light (warning buzzer)
Warning lightDetails/Actions
(U.S.A.)
or
(Canada)
Indicates a malfunction in:
The electronic engine control system;
 The electronic throttle control system; or
 The electronic automatic transmission control system
 Immediately stop the vehicle in a safe place and contact your Lexus
dealer.
Warning lightDetails/Actions
Indicates that the engine coolant temperature is too high
 Immediately stop the vehicle in a safe place.
Handling method ( P.386)
Warning lightDetails/Actions
When the light comes on after bl inking for approximately 1 minute:
Malfunction in the tire pressure warning system
 Have the system checked by your Lexus dealer.
When the light comes on:
Low tire inflation pressure such as
 Natural causes
 Flat tire
Vehicles without run-flat tires
 Immediately stop the vehicle in a safe place. ( P.365)
Vehicles with run-flat tires
 P.365
Warning lightDetails/Actions
(yellow)
Indicates a malfunction in:
The electronically controlled brake system (if equipped); or
 The parking brake system
 Have the vehicle inspected by your Lexus dealer immediately.

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

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.

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 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