2015 Lexus GS350 maintenance

GS350_OM_OM30E15U_(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 advices 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

5
1
8 7
6
5
4
3
2
GS350_OM_OM30E15U_(U)
9
6-1. Maintenance and careCleaning and protecting the vehicle exterior ................. 376
Cleaning and protecting the vehicle inte rior..................380
6-2. Maintenance Maintenance requ irements ... 383
General mainte nance.............. 386
Emission inspection and maintenance (I/M)
programs .................................... 390
6-3. Do-it-yourself maintenance Do-it-yourself service precautions................................. 391
Hood ............................................... 394
Positioning a floor jack............. 395
Engine compartment ................397
Tires................................................... 410
Tire inflation pressure ............... 420
Wheels ........................................... 423
Air conditioning filter ............... 425
Electronic key battery...............427
Checking and replacing fuses.............................................. 429
Headlight aim .............................. 442
Light bulbs .................................... 444 7-1. Essential information
Emergency flashers .................. 460
If your vehicle has to be stopped in an emergency...... 461
7-2. Steps to take in an emergency If your vehicle needs to be towed.................................462
If you think something is wrong ................ 468
Fuel pump shut off system ...... 469
If a warning light turns on or a warning buzzer sounds......470
If a warning message is displayed ................................480
If you have a flat tire .................. 504
If the engine will not start .......... 517
If the shift lever cannot be shifted from P .......................519
If the parking brake cannot be released ................................ 520
If the electronic key does not operate properly ..................... 522
If the vehicle battery is discharged............................. 525
If your vehicle overheats ......... 529
If the vehicle becomes stuck ............................................. 532
6Maintenance and care7When trouble arises

TABLE OF CONTENTS6
GS350_OM_OM30E15U_(U)
8-1. SpecificationsMaintenance data (fuel, oil level, etc.) .................. 536
Fuel information.......................... 546
Tire information........................... 549
8-2. Customization Customizable features ..............561
8-3. Initialization Items to initialize ..........................572
Reporting safety defects for U.S. owners...................................... 574
Seat belt instructions for Canadian owners
(in French) ...............................................575
SRS airbag instructions for Canadian owners
(in French) ...............................................577
Headlight aim instructions for Canadian owners (in French) ........ 586 What to do if...
(Troubleshooting) ............................... 590
Alphabetical index ................................ 596
8Vehicle specifications
9For owners
Index
For information regarding the equipment listed below, refer to the
“NAVIGATION AND MULTIMEDIA SYSTEM OWNER’S
MANUAL”.
• Audio system
• Intuitive parking assist• Navigation system
• Lexus parking assist monitor

701-2. Theft deterrent system
GS350_OM_OM30E15U_(U)
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 IGNI-
TION 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 touching a key to the security system (key with a
built-in transponder chip) of another vehicle
The vehicle’s keys have built-in tr ansponder 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 pr event vehicle theft but does not guar-
antee absolute security against all vehicle thefts.

731-2. Theft deterrent system
GS350_OM_OM30E15U_(U)
1
For safety and security
■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 fol-
lowing:
●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
●When the alarm is operating, the doors ar e locked automatically to prevent intrud-
ers.
●Do not leave the key inside the vehicle when the alarm is operating, and make sure
the key is not inside the vehicle when recharging or replacing the battery.
●A person inside the vehicle opens a door,
the trunk or hood.
●The battery is recharged or replaced when
the vehicle is locked. ( P. 5 2 7 )
NOTICE
■To ensure the system operates correctly
Do not modify or remove the system. If modified or removed, the proper operation
of the system cannot be guaranteed.

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GS350_OM_OM30E15U_(U)
4-5. Using the driving support systems
CAUTION
■Situations unsuitable for LKA
Do not use LKA in any of the following situations.
Otherwise, the system may not function correctly and could result in an accident.
●When driving with snow tires, tire ch ains, a spare tire, or similar equipment
●When the tires have been excessively worn, or when the tire inflation pressure is
low.
●When there are objects or structures along the roadside that might be misinter-
preted as lane markers (such as guardrails, curb, reflector posts, etc.)
●When driving on snowy roads
●When pavement lane markers are difficult to see due to rain, snow, fog, sand, dirt,
etc.
●When there are visible lines on the pavement from road repairs, or if the remains
of old lane markers are still visible on the road
●When driving on slippery roads, such as those covered with rain, ice or snow
●When driving in a lane other than the driving or passing lanes on a freeway or
highway
●When driving on a road with lane closures due to maintenance, or when driving
in a temporary lane
●When emergency towing
NOTICE
■To prevent damage to or incorrect operation of the LKA system
●Do not modify the headlights or attach stickers to the surface of the lights.
●Do not modify the suspension. If any suspension part needs to be replaced, con-
tact your Lexus dealer.
●Do not install or place anything on the h ood or the grille. Also, do not install a
grille guard (bull bars, kangaroo bar etc.).
●Do not modify the sun visor. If any sun visor part needs to be replaced, contact
your Lexus dealer.
●If your windshield needs repair s, contact your Lexus dealer.

375
GS350_OM_OM30E15U_(U)
Maintenance and care6
6-1. Maintenance and care Cleaning and protecting the vehicle exterior.................. 376
Cleaning and protecting the vehicle interior ................. 380
6-2. Maintenance Maintenance requ irements ...383
General maintena nce ..............386
Emission inspection and maintenance (I/M)
programs ....................................390
6-3. Do-it-yourself maintenance Do-it-yourself service precautions ................................. 391
Hood ............................................... 394
Positioning a floor jack ............. 395
Engine compartment ............... 397
Tires ................................................... 410
Tire inflation pressure ............... 420
Wheels ........................................... 423
Air conditioning filter ............... 425
Electronic key battery ...............427
Checking and replacing fuses .............................................. 429
Headlight aim .............................. 442
Light bulbs..................................... 444

376
GS350_OM_OM30E15U_(U)
6-1. Maintenance and care
Cleaning and protecting the vehicle exterior
●Working from top to bottom, liberally apply water to the vehicle body,
wheel wells and underside of the vehicle to remove any dirt and dust.
●Wash the vehicle body using a sponge or soft cloth, such as a chamois.
●For hard-to-remove marks, use car wash soap and rinse thoroughly
with water.
●Wipe away any water.
●Wax the vehicle when the waterproof coating deteriorates.
If water does not bead on a clean surface, apply wax when the vehicle body is
cool.
■Self-restoring coat
The vehicle body has a self-restoring coating that is resistant to small surface
scratches caused in a car wash etc.
●The coating lasts for 5 to 8 years from when the vehicle is delivered from the plant.
●The restoration time differs depending on the depth of the scratch and outside
temperature. The restoration time may become shorter when the coating is
warmed by applying warm water.
●Deep scratches caused by keys, co ins, etc. cannot be restored.
●Do not use wax that contain abrasives.
■Automatic car washes
●Fold the mirrors before washing the vehicle. Start washing from the front of the
vehicle. Make sure to extend the mirrors before driving.
●Brushes used in automatic car washes may scratch the vehicle surface and harm
your vehicle’s paint.
●Rear spoiler (if equipped) may not be wa shable in some automatic car washes.
There may also be an increased risk of damage to vehicle.
Perform the following to protect th e vehicle and maintain it in prime
condition: