2018 Lexus GS350 air condition

509
GS350_300_GS F_OM_OM30G34U_(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. 86, 92) 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

5117-2. Steps to take in an emergency
GS350_300_GS F_OM_OM30G34U_(U)
7
When trouble arises
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.)
If the fans are not operating:
Stop the engine immediately an d contact your Lexus dealer.
If the fans are operating:
Have the vehicle inspected at the nearest Lexus dealer.
5
GS350GS F
GS300
6
7

540
GS350_300_GS F_OM_OM30G34U_(U)8-1. Specifications
■Temperature A, B, C
The temperature grades are A (the highes
t), 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

GS350_300_GS F_OM_OM30G34U_(U)
5558-2. Customization
8
Vehicle specifications
■Intuitive parking assist*1, 2
*1: If equipped
*2: Refer to the “NAVIGATION AND MULTIMEDIA SYSTEM OWNER’S MANUAL”.
*3: GS350/GS300
■Driving mode select switch (vehicles with Adaptive Variable Suspension
system) (→P. 274)
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

556
GS350_300_GS F_OM_OM30G34U_(U)8-2. Customization
■Automatic air conditioning system (
→P. 308)
■Front seat heaters (wit hout seat ventilators)* (→ P. 324)
*: If equipped
■Front seat heaters and ventilators*1/rear seat heaters*2 (→ P. 323)
*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

580Alphabetical index
GS350_300_GS F_OM_OM30G34U_(U)
Alphabetical index
A/C ............................................................308Air conditioning filter....................... 408
Changing the rear seat settings .................................................. 315
Front automatic air conditioning system ................................................. 308
Micro dust and pollen filter ............ 314
Rear air conditioning system......... 319
S-FLOW mode ................................. 309
ABS (Anti-lock Brake System).......288 Function ................................................. 288
Warning light .......................................434
Warning message .............................. 441
Active Sound Control (ASC) ...........215
Adaptive Front-lighting System (AFS) ........................................................ 217
Adaptive Variable Suspension system (AVS)...................................... 289
AFS (Adaptive Front-lighting System) .................................................... 217
Air conditioning filter ..........................408
Air conditioning system .....................308 Air conditioning filter....................... 408
Changing the rear seat settings .................................................. 315
Front automatic air conditioning system ................................................. 308
Micro dust and pollen filter ............ 314
Rear air conditioning system......... 319
S-FLOW mode ................................. 309 Airbags .......................................................... 41
Airbag operating conditions .......... 48
Airbag precautions for your child ....................................... 44
Airbag warning light ........................ 434
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 ............................................................ 74 Alarm ...........................................................74
Warning buzzer....................... 434, 441
Anchor brackets.......................................63
Antennas (smart access system with push-button start) .....................150
Anti-lock Brake System (ABS) ...... 288 Function ..................................................288
Warning light ....................................... 434
Warning message............................... 441
A

586Alphabetical index
GS350_300_GS F_OM_OM30G34U_(U)
Fuel filler door ........................................ 228When the fuel filler door cannot be opened ........................ 230
Fuel pump shut off system................. 433
Fuses ............................................................ 412
Garage door opener .......................... 345
Gauges ................................................ 86, 92
Glove box ..................................................331
Glove box light ........................................331
Hands-free system (for cellular phone)
*
HD Radio® system*
Head restraints ........................................165
Headlights .................................................216 Adaptive Front-lighting System (AFS) ..................................... 217
Automatic High Beam system ..... 219
Headlight leveling warning message ............................ 441
Light switch ............................................ 216
Replacing light bulbs ........................420
Headlights aim ............................. 416, 573
Head-up display..................................... 120
Heated steering wheel ....................... 322 Heaters
Air conditioning system ................ 308
Heated steering wheel ................... 322
Seat heaters .......................................... 323
Outside rear view mirrors .............. 314
Hill-start assist control ....................... 288
Hood ..........................................................373 Open ....................................................... 373
Warning message............................... 441
Hooks Cargo hooks ....................................... 334
Coat hooks ........................................... 344
Luggage hook..................................... 334
Retaining hooks (floor mat)..............32
Horn.............................................................168
I/M test ..................................................... 370
Identification............................................. 519 Engine .....................................................520
Vehicle ......................................................519
Ignition switch (engine switch) ......... 197 Auto power off function ...................199
Changing the engine switch modes ................................................... 198
If your vehicle has to be stopped in an emergency.......... 425
Starting the engine ............................. 198
Illuminated entry system ................... 329
Immobilizer system ................................. 72
Indicators ...................................................... 81
G
H
I

591Alphabetical index
GS350_300_GS F_OM_OM30G34U_(U)
Radar cruise control (dynamic radar cruise control with
full-speed range) ............................... 258
Radiator ....................................................388
Radio
*
RBDS (Radio Broadcast Data Systems)
*
Rear air conditioning system .............319
Rear door sunshades ............................341
Rear personal lights............................. 328
Rear side marker lights ........................216 Light switch ............................................ 216
Replacing light bulbs ........................420
Welcome light illumination control ......................... 138
Rear seat heaters.................................. 323
Rear sunshade .........................................341 Operation ............................................... 341
Reverse operation feature............. 342 Rear turn signal lights ........................... 210
Replacing light bulbs ....................... 420
Turn signal lever ...................................210
Rear view mirror Inside rear view mirror......................169
Outside rear view mirrors ................ 171
Rear view monitor system
*
Rear window defoggers ...................... 314
Refueling.................................................. 228 Capacity................................................... 521
Fuel types................................................. 521
Opening the fuel tank cap ............ 229
When the fuel filler door cannot be opened ......................... 230
Remote Touch
*.................................... 302
Replacing Electronic key battery .......................410
Fuses .......................................................... 412
Light bulbs...............................................418
Tires ...........................................................472
Rev indicator .....................................88, 95
Rev peak ............................................. 88, 96
Reporting safety defects for U.S. owners .................................. 562
Resetting the message indicating maintenance is required ................ 366
R
*: Refer to the “NAVIGATION AND MULTIMEDIA SYSTEM OWNER’S MANUAL”.