2021 LEXUS ES350 overheating

2725-3. Using the air conditioning system
■Operation condition
The engine switch is in IGNITION ON
mode.
■Air conditioning system-linked control
mode
When the seat ventilato r fan speed level is
Hi (when AUTO is selected), the seat venti-
lator fan speed may become higher
according to the fan speed of the air condi-
tioning system.
■When AUTO mode is selected
The following functions may turn off
according to the air conditioning set tem-
perature, outside temperature, etc.
●Seat heaters
●Seat ventilators
■Stored settings
When the engine switch is turned to IGNI-
TION ON mode, the following stored set-
tings are recalled.
●Seat heaters
●Seat ventilators
■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 driv-
ing.
Adjust the seat ventilator fan speed
level
The seat ventilator can be adjusted in 3
levels.
When the seat ventilator is operated, the
fan speed level is displayed on the screen.
Adjust the seat heater temperature
level
The seat heater can be adjusted in 3 levels.
When the seat heater is operated, the tem-
perature level is disp layed on the screen.
Adjust the heated steering wheel
WARNING
■To prevent 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
A
B
C

3937-2. Steps to take in an emergency
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 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 “F” and “L” lines on
the reservoir.
2GR-FKS engine
Reservoir
“F” line
“L” line
Coolant inlet cap
If your vehicle overheats
The following may indicate that
your vehicle is overheating.
 The engine coolant temperature
gauge ( P.70, 73) is in 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
D

450Alphabetical index
C
Care ...................................................... 304, 307Aluminum wheels ......................................304
Exterior ...........................................................304
Interior ............................................................. 307
Seat belts........................................................ 307
Cargo capacity................................................ 141
Cargo hooks .................................................280
Center Display ............................................. 256
Chains .............................................................. 252
Child-protectors............................................. 98
Child restraint system................................... 43 Fixed with a LATCH system ..................50
Fixed with a seat belt....................................47
Front passenger occupant classification system ..............................................................37
Points to remember .................................... 43
Riding with children ..................................... 43
Types of child restraint system installation method ........................................................... 44
Using an anchor bracket .......................... 53
Child safety ....................................................... 43 Airbag precautions...................................... 33
Battery precautions ...................... 324, 392
Child restraint system................................. 44
Heated steering wheel and seat heater precautions................................................ 270
How your child should wear the seat belt ............................................................................ 25
Moon roof precautions ............................ 127
Panoramic moon roof precautions ..... 131
Power window lock switch.....................125
Power window precautions ...................125
Rear door child-protectors ..................... 98
Seat belt extender precautions ............. 25
Seat belt precautions ...................................24
Trunk precautions ........................................ 99
Cleaning.............................................. 304, 307 Aluminum wheels ......................................304
Exterior ...........................................................304
Interior ............................................................. 307 Radar sensor ........
............................... 171, 207
Seat belts ........................................................307
Clock ................................................. 70, 73, 281
Coat hooks..................................................... 292
Compass ......................................................... 299
Condenser ..................................................... 322
Console box .................................................. 278
Console box light ........................................ 278
Cooling system............................................. 322 Engine overheating...................................393
Cornering lights ............................................ 160 Replacing light bulbs ................................346
Cruise control Dynamic radar cruise control with full-
speed range ............................................... 195
Cup holder ..................................................... 278
Current fuel consumption ...........................79
Curtain shield airbags .................................. 28
Customizable features ................................419
D
Daytime running light system .................. 158
Defogger Outside rear view mirrors..................... 264
Rear window ................................................ 264
Windshield .................................................... 264
Dimension ...................................................... 398
Dinghy towing................................................. 142
Display BSM (Blind Spot Monitor)................... 205
Dynamic radar cruise control with full-
speed range ............................................... 195
Head-up display............................................84
Intuitive parking assist ................................213
LTA (Lane Tracing Assist) ..................... 189
Multi-information display ...........................77
Parking Support Brake function (rear pedestrians)............................................... 243
RCD (Rear Camera Detection) ........ 224
RCTA...............................................................220
Warning message .......................................371
Distance until next engine oil

452Alphabetical index
Identification number ...............................399
If the engine will not start .......................384
If your vehicle has to be stopped in an
emergency ................................................ 352
Ignition switch (engine switch) ............. 144
Overheating................................................. 393
Tachometer .............................................70, 73
Engine coolant.............................................. 322 Capacity ......................................................... 402
Checking ....................................................... 322
Preparing and checking before winter...........................................................................251
Engine coolant temperature gauge 70, 73
Engine immobilizer system .......................... 61
Engine oil ..........................................................319 Capacity ........................................................ 400
Checking .........................................................319
Preparing and checking before winter...........................................................................251
Warning light ............................................... 362
Engine oil maintenance data ....................321
Engine switch ..................................................144 Auto power off function ........................... 147
Changing the engine switch modes.. 147
If your vehicle has to be stopped in an
emergency ................................................ 352
Starting the engine ...................................... 144
Enhanced Vehicle Stability Control (Enhanced VSC) ...................................... 246
Enhanced VSC (Enhanced Vehicle Stabil- ity Control) .................................................. 246
EPS (Electric Power Steering) .............. 246 Function .......................................................... 246
Warning light ............................................... 363
Event data recorder (EDR) ............................7
F
Flat tire ............................................................. 375 Tire pressure warning system ............. 328
Floor mats ...........................................................22
Fluid Automatic transmission ..........................403 Brake ............................................................... 404
Washer ...........................................................325
Footwell light ..................................................274
Front passenger occupant classification system ...............................................................37
Front seats ......................................................... 113 Adjustment ....................................................... 113
Cleaning .........................................................307
Correct driving posture ............................ 23
Driving position memory .......................... 114
Head restraints............................................... 117
Memory recall function.............................. 116
Power easy access system ...................... 114
Seat heaters ..................................................270
Seat position memory ................................ 114
Seat ventilators ............................................270
Front side marker light ............................... 158 Light switch .................................................... 158
Front side marker lights Replacing light bulbs ................................346
Front turn signal lights .................................153 Replacing light bulbs ................................346
Turn signal lever .......................................... 153
Fuel ......................................................................169 Capacity ........................................................ 400
Fuel gauge ............................................... 70, 73
Fuel pump shut off system.................... 360
Information ................................................... 408
Refueling.......................................................... 169
Type ................................................................. 400
Warning light ...............................................364
Fuel consumption Average fuel economy .............................. 79
Current fuel consumption ........................ 79
Fuel filler door .................................................169 If the fuel filler do or cannot be opened
......................................................................... 386
Refueling.......................................................... 169
Fuel gauge ................................................. 70, 73
Fuel pump shut off system........................ 360
Fuses ................................................................. 342

Alphabetical index455
Meter control switches .............................. 78
Meters ........................................................70, 73
Multi-information display ........................... 77
Settings .............................................................. 82
Units ......................................................................81
Warning lights ...............................................361
Warning message....................................... 371
Mirrors Inside rear view mirror..............................120
Outside rear view mirror defoggers264
Outside rear view mirrors ........................121
Vanity mirrors................................................281
Moon roof Door lock linked moon roof operation................................................................ 127, 130
Jam protection function................. 127, 130
Operation..............................................126, 129
Multi-information display ............................. 77 Audio system-linked display................... 82
Boost gauge......................................................81
Drive information 1/Drive information 2............................................................................ 79
Driving information display...................... 79
Driving support system information dis- play ................................................................... 82
Dynamic radar cruise control with full- speed range ............................................... 195
Eco Driving Indicator ................................. 87
Gear Position ...................................................81
G-force................................................................81
LTA (Lane Tracing Assist)..................... 189
Menu icons ...................................................... 78
Meter control switches .............................. 78
Navigation system-linked display ..........81
Pop-up display............................................... 82
Settings .............................................................. 82
Suggestion function..................................... 83
Tire pressure ................................................ 328
Units ......................................................................81
Warning message....................................... 371N
Navigation system-linked display..... 81, 84
Noise from under vehicle ...............................6
O
Odometer ................................................... 71, 76
Odometer and trip meter display “ODO TRIP” switch ............................. 71, 76
Display items ............................................ 71, 76
Pop-up display .......................................72, 76
“ODO TRIP”switch ................................. 71, 76
Oil Engine oil....................................................... 400
Opener Fuel filler door ............................................... 169
Hood ................................................................. 316
Trunk ................................................................... 101
Outside door handle lig hts.......................274
Outside rear view mirrors .......................... 121 Adjustment ....................................................... 121
BSM (Blind Spot Monitor)................... 205
Folding............................................................... 122
Linked mirror functi on when reversing
............................................................................123
Mirror position memory ............................ 114
Outside rear view mirror defoggers264
RCTA function ............................................220
Outside temperature............................ 70, 73
Overheating .................................................. 393
P
Paddle shift switches ........................... 151, 152
Panic mode ....................................................... 93
Panoramic moon roof Jam protection function ........................... 130
Operation ........................................................129
Parking assist sensors (intuitive parking assist) ...............................................................213
Parking brake..................................................154 Operation ....................................................... 154