
528
GS350_200t_GS F_OM_OM30E86U_(U)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 suff iciently, 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

5307-2. Steps to take in an emergency
GS350_200t_GS F_OM_OM30E86U_(U)
Add coolant if necessary.
Water can be used in an emergency if coolant is unavailable.
Start the engine and turn the air conditioning 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 oper ating 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 and contact your Lexus dealer.
If the fans are operating:
Have the vehicle inspected at the nearest Lexus dealer.
5
GS350GS F
GS200t
6
7

GS350_200t_GS F_OM_OM30E86U_(U)
5638-1. 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 material 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, underinflation, or excessiv e 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 pressure 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 excess 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

578
GS350_200t_GS F_OM_OM30E86U_(U)8-2. Customization
■Intuitive parking assist*1, 2
*1:If equipped
*2: Refer to the “NAVIGATION AND MULTIMEDIA SYSTEM OWNER’S MANUAL”.
*3:GS350/GS200t
■Driving mode select switch (vehicles with Adaptive Variable Suspension
system) (
P. 2 9 4 )
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 parking assist is operat-
ing)All sensors displayedDisplay offO—O
123
FunctionDefault
settingCustomized setting
Power train controlNormalPo w e rO——Eco
Chassis controlNormalSportO——
Air conditioning operationNormalEcoO——
123

GS350_200t_GS F_OM_OM30E86U_(U)
5798-2. Customization
8
Vehicle specifications
■Automatic air conditioning system (P. 3 2 8 )
■Front seat heaters (without seat ventilators)* ( P. 3 4 4 )
■Front seat heaters and ventilators*1/rear seat heaters*2 ( P. 343)
*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 dur-
ing automatic operat ion (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 adjustment 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

604Alphabetical index
GS350_200t_GS F_OM_OM30E86U_(U)
Alphabetical index
A/C ............................................................ 328Air conditioning filter........................ 427
Changing the rear seat settings ................................................ 335
Front automatic air conditioning system ................................................. 328
Micro dust and pollen filter ...........334
Rear air conditioning system........339
S-FLOW mode ..................................329
ABS (Anti-lock Brake System).......308 Function ................................................. 308
Warning light .......................................452
Warning message ............................ 459
Active Sound Control (ASC) ...........214
Adaptive Front-lighting System (AFS) ........................................................216
Adaptive Variable Suspension system (AVS)...................................... 309
AFS (Adaptive Front-lighting System) ....................................................216
Air conditioning filter ...........................427
Air conditioning system ..................... 328 Air conditioning filter........................ 427
Changing the rear seat settings ................................................ 335
Front automatic air conditioning system ................................................. 328
Micro dust and pollen filter ...........334
Rear air conditioning system........339
S-FLOW mode ..................................329 Airbags .......................................................... 41
Airbag operating conditions .......... 48
Airbag precautions for your child ....................................... 44
Airbag warning light ........................ 452
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.....................452, 459
Anchor brackets.......................................63
Antennas (smart access system with push-button start) .....................150
Anti-lock Brake System (ABS) ...... 308 Function ................................................. 308
Warning light ....................................... 452
Warning message............................. 459
A

610Alphabetical index
GS350_200t_GS F_OM_OM30E86U_(U)
Fuel filler door .........................................227When the fuel filler door cannot be opened ......................... 229
Fuel pump shut off system...................451
Fuses ............................................................431
Garage door opener .......................... 365
Gauges ................................................ 86, 92
Glove box ................................................. 351
Glove box light ....................................... 351
Hands-free system (for cellular phone)
*
HD Radio® system*
Head restraints ........................................165
Headlights .................................................215 Adaptive Front-lighting System (AFS) .................................... 216
Automatic High Beam system ..... 218
Headlight leveling warning message .......................... 459
Light switch ............................................ 215
Replacing light bulbs ........................439
Headlights aim ............................435, 597
Head-up display..................................... 120
Heated steering wheel ....................... 342 Heaters
Air conditioning system ................. 328
Heated steering wheel ................... 342
Seat heaters .......................................... 343
Outside rear view mirrors ............ 334
Hill-start assist control ....................... 308
Hood ......................................................... 393 Open ....................................................... 393
Warning message............................. 459
Hooks Cargo hooks ....................................... 354
Coat hooks ........................................... 364
Luggage hook..................................... 354
Retaining hooks (floor mat)..............32
Horn............................................................. 168
I/M test ..................................................... 390
Identification........................................... 539 Engine .....................................................540
Vehicle ....................................................539
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.......... 443
Starting the engine ............................. 198
Illuminated entry system ................... 349
Immobilizer system ................................. 72
Indicators ...................................................... 81
G
H
I

615Alphabetical index
GS350_200t_GS F_OM_OM30E86U_(U)
Radar cruise control (dynamic radar cruise control) ........................ 278
Radar cruise control (dynamic radar cruise control with
full-speed range) ............................... 266
Radiator ....................................................408
Radio
*
RBDS (Radio Broadcast Data Systems)
*
Rear air conditioning system ........... 339
Rear door sunshades ............................361
Rear personal lights............................. 348
Rear side marker lights ........................215 Light switch ............................................ 215
Replacing light bulbs ........................439
Welcome light illumination control ......................... 138
Rear seat heaters.................................. 343
Rear sunshade .........................................361 Operation ............................................... 361
Reverse operation feature.............362 Rear turn signal lights ......................... 209
Replacing light bulbs ....................... 439
Turn signal lever ................................. 209
Rear view mirror Inside rear view mirror......................169
Outside rear view mirrors ................171
Rear view monitor system
*
Rear window defoggers .................... 334
Refueling................................................... 227 Capacity ...................................................541
Fuel types.................................................541
Opening the fuel tank cap ............ 228
When the fuel filler door cannot be opened ......................... 229
Remote Touch
*.....................................322
Replacing Electronic key battery ..................... 429
Fuses .......................................................... 431
Light bulbs............................................. 437
Tires ............................................................491
Rev indicator .....................................88, 95
Rev peak ............................................. 88, 96
Reporting safety defects for U.S. owners .................................. 586
Resetting the message indicating maintenance is required ................ 386
R
*: Refer to the “NAVIGATION AND MULTIMEDIA SYSTEM OWNER’S MANUAL”.