2020 Lexus ES350 air condition

3607-2. Steps to take in an emergency
leaks and tire inflation pressure changes
caused by temperature. In this case, adjust-
ing the tire inflation pressure will turn off the
warning light (after a few minutes).
■When a tire is replaced with a spare tire
The compact spare tire is not equipped with
a tire pressure warning valve and transmit-
ter. If a tire goes flat, the tire pressure warn-
ing light will not turn off even though the flat
tire has been replaced with the spare tire.
Replace the spare tire with the repaired tire
and adjust the tire inflation pressure. The
tire pressure warning lig ht will go off after a
few minutes.
■Conditions that the tire pressure warn-
ing system may not function properly
 P.323
WARNING
■If both the ABS and the brake system
warning lights remain on
Stop your vehicle in a safe place immedi-
ately and contact your Lexus dealer.
The vehicle will become extremely
unstable during braking, and the ABS
system may fail, which could cause an
accident resulting in death or serious
injury.
■When the electric power steering
system warning light comes on
When the light comes on yellow, the
assist to the power steering is restricted.
When the light comes on red, the assist
to the power steering is lost and handling
operations of the steering wheel become
extremely heavy.
When steering wheel operations are
heavier than usual, grip the steering
wheel firmly and operate it using more
force than usual.
■If the tire pressure warning light
comes on
Be sure to observe the following precau-
tions.
Failure to do so could cause a loss of
vehicle control and result in death or
serious injury.
●Stop your vehicle in a safe place as
soon as possible. Check and adjust the
tire inflation pre ssure immediately.
●If the tire pressure warning light comes
on even after tire inflation pressure
adjustment, it is prob able that you have
a flat tire. Check the tire s. If a tire is flat,
change it with the spare tire and have
the flat tire repaired by the nearest
Lexus dealer.
●Avoid abrupt maneuvering and brak-
ing.
If the vehicle tires deteriorate, you
could lose control of the steering
wheel or the brakes.
■If a blowout or sudden air leakage
should occur
The tire pressure warning system may
not activate immediately.
■Maintenance of the tires
Each tire, including the spare (if pro-
vided), should be checked monthly when
cold and inflated to the inflation pressure
recommended by the vehicle manufac-
turer on the vehicle placard or tire infla-
tion pressure label (tire and load
information label). (If your vehicle has
tires of a different size than the size indi-
cated on the vehicle placard or tire infla-
tion pressure label [tire and load
information label], you should determine
the proper tire inflation pressure for
those tires.)

3817-2. 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
WARNING
■Battery precautions
The battery contains poisonous and cor-
rosive acidic electrolyte, while related
parts contain lead and lead compounds.
Observe the following precautions when
handling the battery:
●When working with the battery, always
wear safety glasses and take care not
to allow any battery fluids (acid) to
come into contact with skin, clothing
or the vehicle body.
●Do not lean over the battery.
●In the event that battery fluid comes
into contact with the skin or eyes,
immediately wash the affected area
with water and seek medical attention.
Place a wet sponge or cloth over the
affected area until medical attention
can be received.
●Always wash your hands after handling
the battery support, terminals, and
other battery-related parts.
●Do not allow children near the battery.
■When replacing the battery
When the vent plug and indicator are
close to the hold down clamp, the battery
fluid (sulfuric acid) may leak.
NOTICE
■When handling jumper cables
When connecting the jumper cables,
ensure that they do not become entan-
gled in the cooling fan or engine drive
belt.
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

3827-2. Steps to take in an emergency
radiator core (radiator) for any
leaks.
Radiator
Cooling fan
If a large amount of coolant leaks, immedi-
ately contact your Lexus dealer.
4The coolant level is satisfactory if it
is between the “F” and “L” lines on
the reservoir.
Reservoir
“F” line
“L” line
Coolant inlet cap
5
Add coolant if necessary.
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.)
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.
A
B
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.

3998-1. Specifications
8
Vehicle 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

4128-2. Customization
■PKSB (Parking Support Brake)* ( P.225)
*:If equipped
■Driving Mode Select switch ( P.208)
*:If equipped
■Automatic air conditioning system ( P.259)
■Seat heater*/seat ventilators* ( P.266)
*:If equipped
■Heated steering wheel* ( P.266)
*: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 pref-
erence 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

433Alphabetical index
Alphabetical index
A
A/C ................................................................... 259Air conditioning filter ............................... 333
Automatic air conditioning system ... 259
ABS (Anti-lock Brake System).............. 244 Function .......................................................... 244
Warning light ............................................... 354
ACA (Active Cornering Assist) ........... 244
Active Cornering Assist (ACA) ........... 244
Adaptive Front-lighting System (AFS) 158
Adaptive Variable Suspension System244
AFS (Adaptive Front-lighting System) 158
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 ...................................... 353
Air conditioning filter ................................. 333
Air conditioning system ............................ 259 Air conditioning filter ............................... 333
Automatic air conditioning system ... 259
Alarm ................................................................... 63 Alarm .................................................................. 63
Warning buzzer ......................................... 352
Anchor brackets ...................................... 43, 51
Antennas (smart access system with push- button start) ................................................. 106
Anti-lock Brake System (ABS).............. 244 Function .......................................................... 244
Warning light ...............................................354
Approach warning........................................199
Armrest............................................................ 286
Assist grips ..................................................... 286
Audio system-linked display ........................81
Automatic headlight leveling system .... 157
Automatic High Beam ................................159
Automatic light control system................156
Automatic transmission .............................. 147 Paddle shift switches ................................. 150
S mode ............................................................. 150
Auxiliary box.................................................. 275
Average fuel economy..................................79
Average vehicle speed .................................79
B
Back-up lights Replacing light bulbs ................................339
Battery Checking ........................................................ 318
If the battery is discharged ....................378
Preparing and checking before winter..........................................................................248
Warning light ...............................................353
Blind Spot Monitor (BSM)....................... 203
Boost gauge...................................................... 80
Brake Brake hold ...................................................... 154
Fluid.................................................................. 390
Parking brake ............................................... 152
Warning light ...............................................352
Brake assist .................................................... 244
Break-in tips.....................................................135
Brightness control Instrument panel light control......... 72, 76
BSM (Blind Spot Monitor)....................... 203

437Alphabetical index
G
Garage door opener ................................. 289
Gauges ....................................................... 70, 73
Gear Position.....................................................81
G-force.................................................................81
Glove box ........................................................274
Glove box light ..............................................274
Grocery bag hooks .....................................276
H
Hands Free Power Trunk Lid ...................102
Headlights ........................................................156Adaptive Front-lighting System (AFS).......................................................................... 158
Automatic High Beam system............. 159
Light switch .................................................... 156
Replacing light bulbs................................ 339
Headlights aim .............................................. 338
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 .............................. 266
Heaters Air conditioning system.......................... 259
Heated steering wheel............................ 266
Outside rear view mirrors ....................260
Seat heaters .................................................. 266
High mounted stoplight Replacing light bulbs................................ 339
Hill-start assist control ............................... 244
Hood ...................................................................312 Open ................................................................. 312
Hooks Cargo hooks................................................ 276
Coat hooks ...................................................288 Grocery bag hooks.................................. 276
Retaining hooks (floor mat) ..................... 22
Horn ....................................................................120
HUD (Head-up display) switch ................ 85
I
I/M test ............................................................ 309
Identification Engine..............................................................387
Vehicle ........................................................... 386
Ignition switch (engine switch).................143 Auto power off function........................... 146
Changing the engine switch modes . 146
If your vehicle has to be stopped in an emergency ................................................. 344
Starting the engine ......................................143
Immobilizer system.......................................... 61
Indicators ........................................................... 68
Initialization Items to initialize .......................................... 415
Maintenance......................................305, 316
Power windows ............................................124
Tire pressure warning system .............326
Inside rear view mirror ................................120
Instrument panel light control ............72, 76
Interior lights.................................................. 270
Intuitive parking assist......................... 210, 211 Function ............................................................. 211
Warning message .......................................214
J
JackPositioning a floor jack ..............................312
Vehicle-equipped jack ........................... 367
Jack handle .................................................... 367
Jam protection function Electronic roof sunshade ........................ 130
Moon roof ....................................................... 127
Panoramic moon roof .............................. 130
Power trunk opener and closer .......... 103
Power windows ............................................124