2018 Lexus GS300 engine

TABLE OF CONTENTS2
GS350_300_GS F_OM_OM30G34U_(U)
For your information................................... 8
Reading this manual................................... 12
How to search ..............................................13
Pictorial index............................................... 14
1-1. For safe useBefore driving ................................ 32
For safe driving .............................. 34
Seat belts .......................................... 36
SRS airbags ....................................... 41
Front passenger occupant classification system ................. 52
Safety information for children ................................... 58
Child restraint systems ............... 59
Installing child restraints............. 63
Exhaust gas precautions.............. 71
1-2. Theft deterrent system Engine immobilizer system........72
Alarm ..................................................74 2. Instrument cluster
Warning lights and indicators .............................. 78
Gauges and meters (GS350/GS300) ................... 86
Gauges and meters (GS F)...... 92
Multi-information display (GS350/GS300) ................. 100
Multi-information display (GS F) ........................................... 108
Head-up display ...........................120
Fuel consumption information .................................. 127
3-1. Key information Keys ...................................................132
3-2. Opening, closing and locking the doors and trunk
Doors ................................................ 137
Trunk .................................................143
Smart access system with push-butto n start ............ 150
3-3. Adjusting the seats Front seats ..................................... 158
Driving position memory......... 160
Head restraints .............................165
1For safety and security
2Instrument cluster
3Operation of
each component

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8 7
6
5
4
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2
GS350_300_GS F_OM_OM30G34U_(U)
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3-4. Adjusting the steering wheel and mirrors
Steering wheel ............................. 168
Inside rear view mirror ..............169
Outside rear view mirrors ........ 171
3-5. Opening, closing the windows and moon roof
Power windows ............................175
Moon roof .......................................178
4-1. Before driving Driving the vehicle ..................... 182
Cargo and luggage ..................... 191
Vehicle load limits .......................194
Trailer towing ............................... 195
Dinghy towing ...............................196
4-2. Driving procedures Engine (ign ition) switch ............. 197
Automatic transmission .......... 202
Turn signal lever .......................... 210
Parking brake ................................. 211
Brake Hold .....................................213
ASC (Active Sound Control) (GS F) ............................................215
4-3. Operating the lights and wipers
Headlight switch ..........................216
Automatic High Beam...............219
Windshield wipers and washer ................................ 223 4-4. Refueling
Opening the fuel tank cap ..... 228
4-5. Using the driving support systems
Lexus Safety System+ .............. 232
PCS (Pre-Collision System) ....................................... 238
LKA (Lane-Keeping Assist) .......................................... 249
Dynamic radar cr uise control
with full-speed range............. 258
Cruise control ............................. 270
Driving mode select switch ........................................... 273
BSM (Blind Spot Monitor) ............. 278
• The Blind Spot Monitor
function ..................................... 281
• The Rear Cross Traffic Alert function......................... 283
TVD (Torque Vectoring Differential) (GS F) ................ 286
Driving assist systems ..............288
4-6. Driving tips Winter driving tips..................... 296
4Driving

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6
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GS350_300_GS F_OM_OM30G34U_(U)
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6-3. Do-it-yourself maintenance Do-it-yourself service precautions.................................. 371
Hood ............................................... 373
Positioning a floor jack ............ 374
Engine compartment ............... 376
Tires ................................................. 393
Tire inflation pressure .............. 403
Wheels ........................................... 406
Air conditioning filter ...............408
Electronic key battery............... 410
Checking and replacing fuses................................................412
Headlight aim (vehicles with single-beam head lights) ........416
Light bulbs ..................................... 418
7-1. Essential information Emergency flashers .................. 424
If your vehicle has to be stopped in an
emergency ................................ 425 7-2. Steps to take in an
emergency
If your vehicle needs to be towed ............................... 426
If you think something is wrong................ 432
Fuel pump shut off system...... 433
If a warning light turns on or a warning buzzer
sounds ......................................... 434
If a warning message is displayed ......................................441
If you have a flat tire (vehicles with spare tire) ..........................472
If you have a flat tire (vehicles without spare tire) .................. 483
If the engine will not start ........ 497
If the parking brake cannot be released................................ 499
If the electronic key does not operate properly...................... 501
If the vehicle battery is discharged................................. 504
If your vehicle overheats......... 509
If the vehicle becomes stuck .............................................. 515
7When trouble arises

8
GS350_300_GS F_OM_OM30G34U_(U)
For your information
Please note that this manual applies to all models and explains all equipment, including
options. Therefore, you may find some expl anations for equipment not installed on your
vehicle.
All specifications provided in this manual are current at the time of printing. However,
because of the Lexus policy of continual pr oduct improvement, we reserve the right to
make changes at any time without notice.
Depending on specifications, th e vehicle shown in the illustrations may differ from your
vehicle in terms of color and equipment.
Approximately five hours after the engine is turned off, you may hear sound coming from
under the vehicle for several minutes. This is the sound of a fuel evaporation leakage
check and, it does not indicate a malfunction.
A wide variety of non-genuine spare parts and accessories for Lexus vehicles are cur-
rently available in the market. You should kn ow that Toyota does not warrant these prod-
ucts and is not responsible fo r their performance, repair, or replacement, or for any
damage they may cause to, or adverse effect they may have on, your Lexus vehicle.
This vehicle should not be modified with non-genuine Lexus products. Modification with
non-genuine Lexus products could affect its performance, safety or durability, and may
even violate governmental regulations. In addition, damage or performance problems
resulting from the modification may not be covered under warranty.
The installation of a mobile two-way radio system in your vehicle could affect electronic
systems such as:
●Multiport fuel injection system/seque ntial multiport fuel injection system
●Lexus Safety System+
●Cruise control system
●Anti-lock brake system
●Vehicle dynamics integrated management
●SRS airbag system
●Seat belt pretensioner system
Be sure to check with your Lexus dealer for precautionary measures or special instruc-
tions regarding installation of a mobile two-way radio system.
Main Owner’s Manual
Noise from under vehicle after turning off the engine
Accessories, spare parts and modification of your Lexus
Installation of a mobile two-way radio system

GS350_300_GS F_OM_OM30G34U_(U)
9
Your Lexus is equipped with several sophisticated computers that will record certain
data, such as:• Engine speed
• Accelerator status
•Brake status
• Vehicle speed
•Shift position
The recorded data varies accord ing to the vehicle grade level and options with which it is
equipped. These computers do not record conversations or sounds, and only record
images outside of the vehicle in certain situations.
●Data transmission
Your vehicle may transmit the data recorded in these computers to Lexus without noti-
fication to you.
●Data usage
Lexus may use the data recorded in these computers to diagnose malfunctions, con-
duct research and development, and improve quality.
Lexus will not disclose the recorded data to a third party except:
• With the consent of the vehicle owner or with the consent of the lessee if the vehicle is leased
• In response to an official request by the police, a court of law or a government
agency
• For use by Lexus in a lawsuit
• For research purposes where the data is not tied to a specific vehicle or vehicle
owner
●Usage of data collected through Lexus Enform (U.S. mainland only)
If your Lexus has Lexus Enform and if you have subscribed to those services, please
refer to the Lexus Enform Telematics Subs cription Service Agreement for information
on data collected and its usage.
●To learn more about the vehicl e data collected, used and shar ed by Lexus, please visit
www.lexus.com/privacyvts/
.
Vehicle data recordings

15Pictorial index
GS350_300_GS F_OM_OM30G34U_(U)
Doors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 137
Locking/unlocking. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 137
Opening/closing the door glasses . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 175
Locking/unlocking by using the mechanical key . . . . . . . . . . . . . . . . . . . . . . . . P. 501
Warning lights/warning messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .P. 436, 443
Windshield wipers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 223
Precautions against winter season . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 296
To prevent freezing (windshield wiper de-icer)*. . . . . . . . . . . . . . . . . . . . . . . . P. 314
Precautions against car wash . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 360
Fuel filler door . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 228
Refueling method . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 228
Fuel type/fuel tank capacity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 521
Tires . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 393
Tire size/inflation pressure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 528
Winter tires/tire chain . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 29 6
Checking/rotation/tire pressure warning system . . . . . . . . . . . . . . . . . . . . . . P. 393
Coping with flat tires . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .P. 472, 483
Hood . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .P. 373
Opening. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 373
Engine compartment cover . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 379
Engine oil . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 522
Coping with overheat. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 509
Warning messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 443
Headlights/front side marker lights. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 216
Front turn signal lights . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 210
Parking lights/daytime running lights. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 216
Side turn signal lights . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 210
1
2
3
4
5
Light bulbs of the exte rior lights for driving
(Replacing method: P. 418, Watts: P. 531)
*: If equipped
6
7
8

18Pictorial index
GS350_300_GS F_OM_OM30G34U_(U)
■Instrument panel
Engine switch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P . 197
Starting the engine/changing the modes. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 197
Emergency stop of the engine . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 425
When the engine will not start . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 497
Warning messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .P. 450, 467
Shift lever . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 202
Changing the shift position. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 202
Precautions against towing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 426
When the shift lever does not move . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 208
Meters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P . 86, 92
Reading the meters/adjusting the instrument panel light . . . . . . . . . . . . .P. 86, 92
Warning lights/indicator lights . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 78
When the warning lights come on . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 434
1
2
3

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GS350_300_GS F_OM_OM30G34U_(U)
For safety and security1
1-1. For safe useBefore driving................................. 32
For safe driving .............................. 34
Seat belts .......................................... 36
SRS airbags .......................................41
Front passenger occupant classification system.................. 52
Safety information for children ...................................58
Child restraint systems ............... 59
Installing child restraints............. 63
Exhaust gas precautions .............. 71
1-2. Theft deterrent system Engine immobilizer system ....... 72
Alarm ................................................. 74