2020 Lexus GS350 maintenance

GS350_GS F_OM_OM30J07U_(U)
Pictorial indexSearch by illustration
1For safety
and securityMake sure to read through them
2Instrument clusterHow to read the gauges and meters, the variety of
warning lights and indicators, etc.
3Operation of
each componentOpening and closing the doors and windows,
adjustment before driving, etc.
4DrivingOperations and advice which are necessary for driving
5Interior featuresUsage of the interior features, etc.
6Maintenance
and careCaring for your vehicle and maintenance procedures
7When trouble
arisesWhat to do in case of malfunction or emergency
8Vehicle
specificationsVehicle specifications, customizable features, etc.
9For owners
Reporting safety defects for U.S. owners, and seat belt,
SRS airbag and headlight aim instructions for Canadian
owners
IndexSearch by symptom
Search alphabetically

TABLE OF CONTENTS4
GS350_GS F_OM_OM30J07U_(U)
5-1. Remote Touch screenRemote Touch/12.3-inch display............................................312
5-2. Using the air conditioning system and defogger
Front automatic air conditioning system ......... 318
Rear air conditioning system.......................................... 329
Heated steering wheel/ seat heaters/seat
ventilators................................... 332
5-3. Using the interior lights Interior lights list ......................... 337• Interior lights .......................... 338
• Personal lights....................... 338
5-4. Using the storage features List of storage features ............ 340• Glove box .................................341
• Console box ............................341
• Cup holders ........................... 342
• Auxiliary boxes ..................... 343
Trunk features ............................. 344 5-5. Using the other interior
features
Other interior features ............ 346 • Sun visors ................................ 346
• Vanity mirrors ....................... 346
• Clock ........................................ 347
• Ashtrays................................... 347
• Power outlets ........................ 348
• Armrest.................................... 348
•Rear sunshade/
rear door sunshades .......... 349
•Trunk storage extension ...................................351
• Coat hooks............................. 352
• Assist grips ............................. 352
Garage door opener ............... 353
6-1. Maintenance and care Cleaning and protecting the vehicle exterior ................ 362
Cleaning and protecting the vehicle interior.................. 367
6-2. Maintenance Maintenance requirements... 370
General maintenance.............. 372
Emission inspection and maintenance (I/M)
programs.................................... 375
5Interior features
6Maintenance and care

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GS350_GS F_OM_OM30J07U_(U)
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6-3. Do-it-yourself maintenance Do-it-yourself service precautions................................ 376
Hood ............................................... 378
Positioning a floor jack ............ 379
Engine compartment ................ 381
Tires ................................................. 394
Tire inflation pressure .............. 404
Wheels ........................................... 407
Air conditioning filter ............... 409
Electronic key battery................. 411
Checking and replacing fuses................................................413
Headlight aim (vehicles with single-beam head lights) ........ 417
Light bulbs ......................................419
7-1. Essential information Emergency flashers .................. 424
If your vehicle has to be stopped in an
emergency ................................ 425
If the vehicle is trapped in rising water ................................ 426 7-2. Steps to take in an
emergency
If your vehicle needs to be towed ................................427
If you think something is wrong................ 433
Fuel pump shut off system...... 434
If a warning light turns on or a warning buzzer
sounds ......................................... 435
If a warning message is displayed .................................... 442
If you have a flat tire (vehicles with spare tire) ......................... 473
If you have a flat tire (vehicles without spare ti re) .................. 484
If the engine will not start ........ 498
If the parking brake cannot be released................................500
If the electronic key does not operate properly..................... 502
If the vehicle battery is discharged.................................505
If your vehicle overheats......... 509
If the vehicle becomes stuck ...............................................513
7When trouble arises

TABLE OF CONTENTS6
GS350_GS F_OM_OM30J07U_(U)
8-1. SpecificationsMaintenance data (fuel, oil level, etc.) ....................516
Fuel information ......................... 529
Tire information .......................... 532
8-2. Customization Customizable features ............ 542
8-3. Initialization Items to initialize......................... 557
Reporting safety defects for U.S. owners .................................... 560
Seat belt instructions for Canadian owners
(in French)................................................561
SRS airbag instructions for Canadian owners
(in French).............................................. 563
Headlight aim instructions for Canadian owners
(in French) (vehicles with
single-beam headlights).....................571 What to do if...
(Troubleshooting)............................... 574
Alphabetical inde x ................................ 578
8Vehicle specifications
9For owners
Index
For information regarding the equipment listed below, refer to the “NAVIGA-
TION AND MULTIMEDIA SYSTEM OWNER’S MANUAL”.
• Audio system
• Intuitive parking assist• Navigation system
• Lexus parking assist monitor

771-3. Theft deterrent system
GS350_GS F_OM_OM30J07U_(U)
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For safety and security
Engine immobilizer system
The indicator light flashes after the
engine switch has been turned off to
indicate that the system is operating.
The indicator light stops flashing after
the engine switch has been turned to
ACCESSORY or IGNITION ON
mode to indicate that the system has
been canceled.
■System maintenance
The vehicle has a maintenance-free type engine immobilizer system.
■Conditions that may cause the system to malfunction
●If the grip portion of the key is in contact with a metallic object
●If the key is in close proximity to or touchi ng a key to the security system (key with a
built-in transponder ch ip) of another vehicle
The vehicle’s keys have built-in transponder chips that prevent the engine
from starting if a key has not been previously registered in the vehicle’s on-
board computer.
Never leave the keys inside the vehicle when you leave the vehicle.
This system is designed to help prev ent vehicle theft but does not guarantee
absolute security against all vehicle thefts.

801-3. Theft deterrent system
GS350_GS F_OM_OM30J07U_(U)
■System maintenance
The vehicle has a maintenance-free type alarm system.
■Items to check before locking the vehicle
To prevent unexpected triggering of the alarm and vehicle theft, make sure of the follow-
ing:
●Nobody is in the vehicle.
●The windows and moon roof are closed before the alarm is set.
●No valuables or other personal items are left in the vehicle.
■Triggering of the alarm
The alarm may be triggered in the following situations:
(Stopping the alarm deactivates the alarm system.)
■Alarm-operated door lock
In the following cases, the door may automatically lock:
●When a person remaining in the vehicle un locks the door and the alarm is activated.
●While the alarm is activated, a person remaining in the vehicle unlocks the door.
●When recharging or replacing the battery.
●The trunk is opened using the mechanical key.
●A person inside the vehicle opens a door, the
trunk or hood, or unlocks the vehicle using an
inside lock button.
●The battery is recharged or replaced when the
vehicle is locked. (P. 507)

GS350_GS F_OM_OM30J07U_(U)
932. Instrument cluster
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Instrument cluster
Engine coolant temperature gauge
Displays the engine coolant temperature
Tachometer
Displays the engine speed in revolutions per minute
Outside temperature
Displays the outside temperature within the range of -40F (-40 C) to 122 F
(50 C). Low outside temperature indicator comes on when the ambient temperature
is 37 F (3 C) or lower.
Clock
Time displayed is linked to the anal og clock on the instrument panel. (P. 347)
Speedometer
Displays the vehicle speed
Fuel gauge
Displays the quantity of fuel remaining in the tank
Multi-information display
Presents the driver with a variety of driving-related data ( P. 106)
Displays warning me ssages in case of a malfunction ( P. 442)
Odometer, trip meter and maintenance required information display
Odometer:
Displays the total distance the vehicle has been driven
Trip meter:
Displays the distance the vehi cle has been driven since the meter was last reset. Trip
meters “A” and “B” can be used to record and display different distances inde-
pendently.
Maintenance required information: • Displays the maintenance requ ired information when the engine switch is in IGNI-
TION ON mode.
• It can be reset from of th e multi-information display. (P. 106)
Shift position and shift range
Displays the selected shift posi tion or selected shift range (P. 208)
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GS350_GS F_OM_OM30J07U_(U)
952. Instrument cluster
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Instrument cluster
Switches between odometer, trip meter
and maintenance required information
displays. When the trip meter is dis-
played, pressing and holding the button
will reset the trip meter.
The brightness of the instrument panel lights can be adjusted.
Darker
Brighter
■The meters and display illuminate when
The engine switch is in IGNITION ON mode.
■Instrument panel brightness adjustment
The instrument panel brightness levels when the tail lights are on and off can be adjusted
individually. However, when the surroundings are bright (daytime, etc.), turning on the tail
lights will not change the inst rument panel brightness. At th is time, any adjustments made
to the instrument panel brightness levels will be applied to both settings at once.
■Limitation of brightness adjustment
The brightness of the instrument panel lights is automatically adjusted based on the light
sensor detecting how bright the surroundings are. However, if the instrument panel
brightness has been manually set to either the brightest or darkest setting, the automatic
adjustment will not be performed.
Changing the display
Instrument panel light control
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