2020 Lexus GS350 air condition

4977-2. Steps to take in an emergency
GS350_GS F_OM_OM30J07U_(U)
7
When trouble arises
WARNING
■Driving to spread the liquid sealant evenly
●Drive the vehicle carefully at a low speed. Be especially careful when turning and cor-
nering.
●If the vehicle does not drive straight or you feel a pull through the steering wheel, stop
the vehicle and check the following:
• Tire condition. The tire may have separated from the wheel.
• Tire inflation pressure. If tire inflation pressure is 19 psi (130 kPa, 1.3 kgf/cm
2 or
bar) or less, the tire may be severely damaged.
NOTICE
■When performing an emergency repair
●Perform the emergency repair without removi ng the nail or screw that has punctured
the tread of the tire. If the object that has punctured the tire is removed, repair by the
emergency tire puncture repair kit may not be possible.
●The repair kit is not waterproof. Make sure that the repair kit is not exposed to water,
such as when it is be ing used in the rain.
●Do not put the repair kit directly onto dusty ground such as sand at the side of the
road. If the repair kit vacuums up dust etc., a malfunction may occur.
■Handling the emergency tire puncture repair kit
●The repair kit power source should be 12 V DC suitable for vehicle use. Do not con-
nect the repair kit to any other source.
●If gasoline splatters on the repair kit, the repair kit may deteriorate. Take care not to
allow gasoline to contact it.
●Store the emergency tire puncture repair kit in the trunk.
The kit may be thrown around during sudden braking and so forth, damaging the kit.
●Store the repair kit in the tr unk out of reach of children.
●Do not disassemble or modify the repair kit. Do not subject parts such as the air pres-
sure indicator to impacts. This may cause a malfunction.
■To avoid damage to the tire pressu re warning valves and transmitters
When a tire is repaired with liquid sealants, the tire pressure warning valve and trans-
mitter may not operate properly. If a liquid sealant is used, contact your Lexus dealer or
other qualified service shop as soon as possi ble. Make sure to replace the tire pressure
warning valve and transmitter when replacing the tire. ( P. 395)

509
GS350_GS F_OM_OM30J07U_(U)
7
When trouble arises
7-2. Steps to take in an emergency
If your vehicle overheats
●The needle of the engine coolant temperature gauge (P. 92, 98) 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 is coming from under the hood.
Stop the vehicle in a safe place and tu rn off the air conditioning system, and
then stop the engine.
If you see steam:
Carefully lift the hood after the steam subsides.
If you do not see steam:
Carefully lift the hood.
After the engine has cooled down sufficiently, inspect the hoses and cooling
core (radiator) for any leaks.
Radiator
Cooling fans
If a large amount of coolant leaks,
immediately contact your Lexus
dealer.
The following may indicate that your vehicle is overheating.
Correction procedures
1
2
3
1
2

5107-2. Steps to take in an emergency
GS350_GS F_OM_OM30J07U_(U)
The coolant level is satisfactory if it is between the “FULL”/“F” and “LOW”/“L”
lines on the reservoir.
Engine coolant reservoir
“FULL”/“F”
“LOW”/“L”
Coolant inlet cap
Add coolant if necessary.
Water can be used in an emerge ncy if coolant is unavailable.
Start the engine and turn the air conditio ning system on to check that the radi-
ator cooling fans operate and to check for coolant leaks from the radiator or
hoses.
The fans operate when the air conditioning system is turned on immediately after a
cold start. Confirm that the fans are operating by checking the fan sound and air flow.
If it is difficult to check these, turn the air conditioning system on and off repeatedly.
(The fans may not operate in freezing temperatures.)
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1
2
3
4
GS350GS F
5
GS350GS F
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GS350_GS F_OM_OM30J07U_(U)
5378-1. Specifications
8
Vehicle specifications
■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 conditions on a specified indoor laboratory test
wheel.
Sustained high temperature can cause the ma terial of the tire to degenerate and
reduce tire life, and excessive temperature can lead to sudden tire failure.
Grade C corresponds to a level of perfor mance which all passenger car tires must
meet under the Federal 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, underi nflation, or excessive loading, either separately or in com-
bination, can cause heat buildup and possible tire failure.
Glossary of tire terminology
Tire related termMeaning
Cold tire inflation pressure
Tire 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 un der that condition
Maximum inflation pres-
sureThe maximum cold inflated pr essure to which a tire may
be inflated, shown on the sidewall of the tire
Recommended inflation
pressureCold tire inflation pressure recommended by a manu-
facturer
Accessory weight
The combined weight (in exce ss of those standard items
which may be replaced) of automatic transmission,
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 co nditioning and additional
weight optional engine
Maximum loaded vehicle
weight
The sum of:
(a) Curb weight
(b) Accessory weight
(c) Vehicle capacity weight
(d) Production options weight
Normal occupant weight150 lb. (68 kg) times the numb er of occupants specified
in the second column of Table 1
* that follows

552
GS350_GS F_OM_OM30J07U_(U)8-2. Customization
■Intuitive parking assist*1, 2
*1: If equipped
*2: Refer to the “NAVIGATION AND MU
LTIMEDIA SYSTEM OWNER’S MANUAL”.
*3:GS350
■Driving mode select switch (vehicles with Adaptive Variable Suspension
system) (P. 282)
FunctionDefault
settingCustomized setting
Detection distance of the front center
sensor
*3FarNearO—O
Detection distance of the rear center
sensorFarNearO—O
Buzzer volume31 to 5O—O
Display setting
(when intuitive parkin g assist is operat-
ing)All sensors displayedDisplay offO—O
123
FunctionDefault
settingCustomized setting
Power train controlNormalPowerO——Eco
Chassis controlNormalSportO——
Air conditioning operationNormalEcoO——
123

GS350_GS F_OM_OM30J07U_(U)
5538-2. Customization
8
Vehicle specifications
■Automatic air conditioning system (P. 318)
■Front seat heaters (wit hout seat ventilators)* ( P. 334)
*: If equipped
■Front seat heaters and ventilators*1/rear seat heaters*2 ( P. 333)
*1: If both are equipped
*2: If equipped
FunctionDefault
settingCustomized setting
A/C Auto switch operationOnOffO—O
Exhaust gas sensor informationStandard-3 to 3O—O
123
FunctionDefaultsettingCustomized setting
Automatic operation of front seat heaterOffOn——O
123
FunctionDefault
settingCustomized setting
Adjustment of the front seat heater tem-
perature or the ventilator fan speed
during automatic operation (individual
seat adjustment available) Level 3
(standard)Level 1 (low) to level 5 (high)O—O
Adjustment of the re ar seat heater tem-
perature during automatic operation
(individual seat ad justment available)Level 3
(standard)Level 1
(low) to
level 5 (high)
O—O
Rear seat heater start-up conditions
when the engine switch is in IGNITION
ON mode (individual seat adjustment
available)
OffOn
(AUTO)O—O
123

578Alphabetical index
GS350_GS F_OM_OM30J07U_(U)
Alphabetical index
A/C ............................................................. 318Air conditioning filter....................... 409
Changing the rear seat settings .................................................325
Front automatic air conditioning system ................................................... 318
Micro dust and pollen filter ........... 324
Rear air conditioning system........329
S-FLOW mode ................................... 319
ABS (Anti-lock Brake System)....... 297 Function .................................................. 297
Warning light .......................................435
Warning message ............................. 442
Active Sound Control (ASC) ........... 221
Adaptive Front-lighting System (AFS) ...................................................... 223
Adaptive Variable Suspension system (AVS)...................................... 298
AFS (Adaptive Front-lighting System) .................................................. 223
Air conditioning filter .......................... 409
Air conditioning system ...................... 318 Air conditioning filter....................... 409
Changing the rear seat settings .................................................325
Front automatic air conditioning system ................................................... 318
Micro dust and pollen filter ........... 324
Rear air conditioning system........329
S-FLOW mode ................................... 319 Airbags .......................................................... 41
Airbag operating conditions .......... 48
Airbag precautions for your child ....................................... 44
Airbag warning light ........................ 435
Correct driving posture .................... 34
Curtain shield airbag operating conditions ....................... 48
Curtain shield airbag precautions .......................................... 46
Front passenger occupant classification system......................... 52
General airbag precautions ........... 44
Locations of airbags.............................. 41
Modification and disposal of airbags................................................47
Side airbag operating conditions ............................................. 48
Side airbag precautions .................... 44
Side and curtain shield airbags operating conditions ....................... 48
Side and curtain shield airbags precautions .......................................... 44
SRS airbags ............................................... 41
Alarm ............................................................ 79 Alarm ...........................................................79
Warning buzzer..................... 435, 442
Anchor brackets.......................................63
Antennas (smart access system with push-button start) ..................... 156
Anti-lock Brake System (ABS) ....... 297 Function .................................................. 297
Warning light ....................................... 435
Warning message............................. 442
A

584Alphabetical index
GS350_GS F_OM_OM30J07U_(U)
Fuel filler door ........................................ 234When the fuel filler door cannot be opened ......................... 237
Fuel pump shut off system................. 434
Fuses ............................................................413
Garage door opener .......................... 353
Gauges ................................................92, 98
Glove box ..................................................341
Glove box light ........................................341
Hands-free system (for cellular phone)
*
HD Radio® system*
Head restraints ......................................... 171
Headlights ............................................... 222 Adaptive Front-lighting System (AFS) ................................... 223
Automatic High Beam system .... 225
Headlight leveling warning message ........................... 442
Light switch ........................................... 222
Replacing light bulbs ..........................421
Headlights aim ............................... 417, 571
Head-up display......................................126
Heated steering wheel ....................... 332 Heaters
Air conditioning system .................. 318
Heated steering wheel ................... 332
Seat heaters .......................................... 333
Outside rear view mirrors ............ 324
Hill-start assist control ........................ 297
Hood ......................................................... 378 Open ....................................................... 378
Warning message............................. 442
Hooks Cargo hooks ....................................... 344
Coat hooks ........................................... 352
Retaining hooks (floor mat)..............32
Horn............................................................. 174
I/M test ......................................................375
Identification............................................. 517 Engine ...................................................... 518
Vehicle ...................................................... 517
Ignition switch (engine switch) ....... 203 Auto power off function .................205
Changing the engine switch modes .................................................. 204
If your vehicle has to be stopped in an emergency.......... 425
Starting the engine ............................ 204
Illuminated entry system ................... 339
Immobilizer system ................................. 77
Indicators .....................................................87
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