2021 LEXUS ES350 air condition

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

3947-2. Steps to take in an emergency
A25A-FKS engineReservoir
“F” line
“L” line
Coolant inlet cap
5 Add coolant if necessary.
2GR-FKS engine
Water can be used in an emergency if
coolant is unavailable.
A25A-FKS engine
Water can be used in an emergency if
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 oper ate in freezing tem-
peratures.)
7 If 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.
A
B
C
D
WARNING
■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.
●While the engine and radiator are hot,
do not loosen or remove the coolant
inlet cap or coolant reservoir cap.
High temperature steam or coolant
could spray out.

4148-1. Specifications
■Traction AA, A, B, C
The traction grades, from highest to
lowest, are AA, A, B and C, and they
represent the tire’s ability to stop on
wet pavement as measured under con-
trolled conditions on specified govern-
ment test surfaces of asphalt and
concrete.
A tire marked C may have poor traction
performance.
Warning: The traction grade assigned to
this tire is based on braking (straight
ahead) traction tests and does not include
cornering (turning) traction.
■Temperature A, B, C
The temperature grades are A (the
highest), B, and C, representing the
tire’s resistance to the generation of
heat and its ability to dissipate heat when tested under controlled condi-
tions on a specified indoor laboratory
test wheel.
Sustained high temperature can cause the
material of the tire to degenerate and
reduce tire life, and excessive temperature
can lead to sudd
en tire failure.
Grade C corresponds to a level of perfor-
mance which all passenger car tires must
meet under the Fede ral Motor Vehicle
Safety Standard No. 109.
Grades B and A represent higher levels of
performance on the laboratory test wheel
than the minimum required by law.
Warning: The temperature grades of a tire
assume that it is properly inflated and not
overloaded.
Excessive speed, unde rinflation, or exces-
sive loading, either separately or in combi-
nation, can cause heat buildup and
possible tire failure.
Glossary of tire terminology
Tire related termMeaning
Cold tire inflation
pressureTire pressure when the vehicle has been parked for three hours or
more, or has not been driven more than 1 mile or 1.5 km under that
condition
Maximum inflation
pressureThe maximum cold inflated pressure to which a tire may be inflated,
shown on the sidewall of the tire
Recommended
inflation pressureCold tire inflation pressure recommended by a manufacturer
Accessory weight
The combined weight (in excess of those standard items which may
be replaced) of automatic tran smission, power steering, power
brakes, power windows, power seats, radio and heater, to the extent
that these items are available as factory-installed equipment
(whether installed or not)
Curb weight
The weight of a motor vehicle with standard equipment, including the
maximum capacity of fuel, oil and coolant, and if so equipped, air
conditioning and additional weight optional engine

4278-2. Customization
8
Vehicle specifications
■PKSB (Parking Support Brake)* ( P.227)
*:If equipped
■Driving Mode Select switch ( P.210)
*:If equipped
■Automatic air conditioning system ( P.263)
■Seat heater*/seat ventilators* ( P.270)
*:If equipped
■Heated steering wheel* ( P.270)
*:If equipped
FunctionDefault settingCustomized setting
PKSB (Parking Support Brake)
functionOnOffO
FunctionDefault settingCustomized setting
Powertrain control in custom
mode
*NormalPowerOEco
Chassis control in custom mode*NormalSportO
Air conditioning operation in cus-
tom mode
*NormalEcoO
FunctionDefault settingCustomized setting
A/C auto switch operationOnOffOO
Exhaust gas sensor sensitivityStandard-3 to 3OO
FunctionDefault settingCustomized setting
Driver’s seat temperature prefer-
ence in automatic modeStandard-2 (cooler) to 2
(warmer)OO
Passenger’s seat temperature
preference in automatic modeStandard-2 (cooler) to 2 (warmer)OO
FunctionDefault settingCustomized setting
Steering wheel heating preference
in automatic modeStandard-2 (low) to 2 (high)OO
ABC
ABC
ABC
ABC
ABC

449Alphabetical index
Alphabetical index
A
A/C ................................................................... 263Air conditioning filter ............................... 339
Automatic air conditioning system ... 263
ABS (Anti-lock Brake System).............. 246 Function .......................................................... 246
Warning light ............................................... 363
ACA (Active Cornering Assist) ........... 246
Active Cornering Assist (ACA) ........... 246
Adaptive Front-lighting System (AFS) 160
Adaptive Variable Suspension System247
AFS (Adaptive Front-lighting System) 160
Airbags ............................................................... 28 Airbag operating conditions................... 30
Airbag precautions for your child ........ 33
Correct driving posture .............................23
Curtain shield airbag operating condi- tions .................................................................... 31
Curtain shield airbag precautions ....... 33
Front passenger occupant classification system ..............................................................37
General airbag precautions ................... 33
Locations of airbags.................................... 28
Modification and disposal of airbags . 35
Side airbag operating conditions ........... 31
Side airbag precautions ............................ 33
Side and curtain shield airbags operating conditions........................................................ 31
Side and curtain shield airbags precau- tions .................................................................. 33
SRS airbags ..................................................... 28
SRS warning light ...................................... 362
Air conditioning filter ................................. 339
Air conditioning system ............................ 263 Air conditioning filter ............................... 339
Automatic air conditioning system ... 263
Alarm ................................................................... 63 Alarm .................................................................. 63
Warning buzzer ...........................................361
Anchor brackets ..................................... 44, 53
Antennas (smart access system with push- button start) ................................................. 106
Anti-lock Brake System (ABS).............. 246 Function .......................................................... 246
Warning light ...............................................363
Approach warning........................................201
Armrest............................................................ 290
Assist grips ..................................................... 290
Audio system-linked display ...................... 82
Automatic headlight leveling system ....159
Automatic High Beam ................................. 161
Automatic light control system............... 158
Automatic transmission ..............................149 Paddle shift switches .........................151, 152
S mode ............................................................. 152
Auxiliary box.................................................. 279
Average fuel economy..................................79
Average vehicle speed .................................79
B
Back-up lights Replacing light bulbs ................................346
Battery Checking ....................................................... 323
If the battery is discharged ................... 389
Preparing and checking before winter........................................................................... 251
Warning light ...............................................362
Blind Spot Monitor (BSM)....................... 205
Boost gauge........................................................81
Brake Brake hold ...................................................... 156
Fluid.................................................................. 404
Parking brake ............................................... 154
Warning light ................................................ 361
Brake assist .................................................... 246
Break-in tips.....................................................135
Brightness control Instrument panel light control......... 72, 76
BSM (Blind Spot Monitor)....................... 205

Alphabetical index453
G
Garage door opener ................................. 293
Gauges ....................................................... 70, 73
Gear Position.....................................................81
G-force.................................................................81
Glove box ....................................................... 278
Glove box light ............................................. 278
Grocery bag hooks ....................................280
H
Hands Free Power Trunk Lid ...................102
Headlights ....................................................... 158Adaptive Front-lighting System (AFS).......................................................................... 160
Automatic High Beam system............... 161
Light switch .................................................... 158
Replacing light bulbs................................ 346
Headlights aim .............................................. 344
Head restraints ................................................ 117
Head-up display.............................................. 84 Driving information display area........... 84
Driving support system display area .. 86
Eco Driving Indicator ................................. 87
HUD (Head-up display) switch............85
Navigation system-linked display ........ 84
Pop-up display............................................... 86
Settings .............................................................. 85
Heated steering wheel .............................. 270
Heaters Air conditioning system.......................... 263
Heated steering wheel............................ 270
Outside rear view mirrors .................... 264
Seat heaters .................................................. 270
High mounted stoplight Replacing light bulbs................................ 346
Hill-start assist control ............................... 246
Hood ...................................................................316 Open .................................................................316
Hooks Cargo hooks................................................280
Coat hooks ................................................... 292 Grocery bag hooks................................. 280
Retaining hooks (floor mat) ..................... 22
Horn ....................................................................120
HUD (Head-up display) switch ................ 85
I
I/M test ..............................................................313
Identification Engine............................................................. 399
Vehicle ........................................................... 398
Ignition switch (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
Immobilizer system.......................................... 61
Indicators ........................................................... 68
Initialization Items to initialize ........................................ 430
Maintenance...................................... 309, 321
Power windows ............................................124
Tire pressure warning system ............. 332
Inside rear view mirror ................................120
Instrument panel light control ............72, 76
Interior lights...................................................274
Intuitive parking assist........................ 212, 213 Function ............................................................213
Warning message .......................................216
J
JackPositioning a floor jack ............................. 316
Vehicle-equipped jack ........................... 376
Jack handle .................................................... 376
Jam protection function Electronic roof sunshade ........................ 130
Moon roof ....................................................... 127
Panoramic moon roof .............................. 130
Power trunk opener an d closer .......... 103
Power windows ............................................124