2015 Lexus GS350 check engine light

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6-1. Maintenance and careCleaning and protecting the vehicle exterior ................. 374
Cleaning and protecting the vehicle inte rior.................. 378
6-2. Maintenance Maintenance requ irements .... 381
General maintenance.............. 384
Emission inspection and maintenance (I/M)
programs ....................................388
6-3. Do-it-yourself maintenance Do-it-yourself service precautions................................ 389
Hood ............................................... 392
Positioning a floor jack............. 393
Engine compartment ............... 395
Tires..................................................408
Tire inflation pressure ................ 418
Wheels ............................................. 421
Air conditioning filter ............... 423
Electronic key battery.............. 425
Checking and replacing fuses...............................................427
Headlight aim .............................. 440
Light bulbs .................................... 442 7-1. Essential information
Emergency flashers .................. 458
If your vehicle has to be stopped in an emergency.... 459
7-2. Steps to take in an emergency If your vehicle needs to be towed................................ 460
If you think something is wrong ................ 466
Fuel pump shut off system .......467
If a warning light turns on or a warning buzzer sounds..... 468
If a warning message is displayed .................................478
If you have a flat tire .................. 502
If the engine will not start ..........515
If the shift lever cannot be shifted from P ....................... 517
If the parking brake cannot be released ................................. 518
If the electronic key does not operate properly ..................... 520
If the vehicle battery is discharged............................. 523
If your vehicle overheats ..........527
If the vehicle becomes stuck ............................................. 530
6Maintenance and care7When trouble arises

15Pictorial index
GS350_OM_OM30F69U_(U)
Windshield wipers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 202
Precautions against winter season . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 283
To prevent freezing (windshield wiper de-icer)
* . . . . . . . . . . . . . . . . . . . . P. 325
Precautions against car wash . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 376
Fuel filler door . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P . 209
Refueling method. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 209
Fuel type/fuel tank capacity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 536
Tires . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 408
Tire size/inflation pressure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .P. 541
Winter tires/tire chain . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 283
Checking/rotation/tire pressure warning system. . . . . . . . . . . . . . . . . . . . P. 408
Coping with flat tires. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 502
Hood . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 392
Opening . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 392
Engine compartment cover. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 396
Engine oil . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 5 3 6
Coping with overheat. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 527
Warning messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 485
Headlights/parking lights/daytime running ligh ts . . . . . . . . . . . . . . . . . . . P. 196
Fog lights
* . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 201
Turn signal lights . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 190
Tail lights . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 196
Stop lights
Hill-start assist control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 256
License plate lights . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 19 6
Back-up lights
Shifting the shift lever to R . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 184
Side marker lights . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 19 6
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Light bulbs of the exterior lights for driving
(Replacing method: P. 442, Watts: P. 543)
*: If equipped
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691-1. For safe use
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For safety and security
Exhaust gas precautions
Harmful substance to the human body is included in exhaust gases if
inhaled.
CAUTION
Exhaust gases include harmful carbon mono xide (CO), which is colorless and odor-
less. Observe the following precautions.
Failure to do so may cause exhaust gases enter the vehicle and may lead to an acci-
dent caused by light-headedness, or may lead to death or a serious health hazard.
■Important points while driving
●Keep the trunk lid closed.
●If you smell exhaust gases in the vehicle even when the trunk lid is closed, open
the windows and have the vehicle inspected at your Lexus dealer as soon as pos-
sible.
■When parking
●If the vehicle is in a poorly ventilated area or a closed area, such as a garage, stop
the engine.
●Do not leave the vehicle with the engine running for a long time.
If such a situation cannot be avoided, park the vehicle in an open space and
ensure that exhaust fumes do not enter the vehicle interior.
●Do not leave the engine running in an area with snow build-up, or where it is
snowing. If snowbanks build up around the vehicle while the engine is running,
exhaust gases may collect and enter the vehicle.
■Exhaust pipe
The exhaust system needs to be checked periodically. If there is a hole or crack
caused by corrosion, damage to a joint or abnormal exhaust noise, be sure to have
the vehicle inspected and repaired by your Lexus dealer.

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2. Instrument cluster
*1: These lights turn on when the engine switch is turned to IGNITION ON mode to
indicate that a system check is being performed. They will turn off after the engine
is on, or after a few seconds. There may be a malfunction in a system if the lights
do not come on, or turn off. Have the vehicle inspected by your Lexus dealer.
*2: The light flashes to indicate a malfunction.
*2
(Canada)
Parking brake indicator
(  P. 4 7 0 )*1Seat belt reminder light
( P. 4 7 1 )
*1Brake system warning light
( P. 4 7 0 )*1Master warning light
( P. 4 7 1 )
*1
Open door warning light
( P. 4 7 1 )*1, 2
(if equipped)
“PCS” warning light
( P. 4 7 0 , 4 8 0 )
*1Low fuel level warning light
( P. 4 7 1 )*1Tire pressure warning light
( P. 4 7 2 )

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2. Instrument cluster
*1: Refer to the “NAVIGATION AND MULTIMEDIA SYSTEM OWNER’SMANUAL”.
*2: These lights turn on when the engine sw itch is turned to IGNITION ON mode to
indicate that a system check is being performed. They will turn off after the engine
is on, or after a few seconds. There may be a malfunction in a system if the lights
do not come on, or turn off. Have the vehicle inspected by your Lexus dealer.
*3: The light flashes to indicate that the system is operating.
*4: The light comes on when the system is turned off. The light flashes faster than
usual to indicate that the system is operating.
*5: In order to confirm operation, the BSM ou tside rear view mirror indicators illumi-
nate in the following situations:
• When the engine switch is turned to IGNITION ON mode while the BSM main switch is set to ON.
• When the BSM main switch is set to ON while the engine switch is in IGNI- TION ON mode.
If the system is functioning correctly, the BSM outside rear view mirror indicators
will turn off after a few seconds.
If the BSM outside rear view mirror indicato rs do not illuminate or do not turn off,
there may be a malfunction with the system.
If this occurs, have the vehicle inspected by your Lexus dealer.
CAUTION
■If a safety system warning light does not come on
Should a safety system light such as the ABS and SRS warning light not come on
when you start the engine, this could mean that these systems are not available to
help protect you in an accident, which coul d result in death or serious injury. Have
the vehicle inspected by your Lexus dealer immediately if this occurs.

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832. Instrument cluster
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Instrument cluster
■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 th e instrument panel brightness. At this 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 ligh ts 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 ei ther the brightest or darkest setting, the
automatic adjustment will not be performed.
■ECO lamp and SPORT lamp
●When sport mode is selected, SPORT lamp (red) will illuminate.
●When all of the following conditions are satisfied and Eco-friendly driving, ECO
lamp (blue) will illuminate. (ECO lamp will become brighter the more Eco-friendly
driving you perform. Also, while the acceleration exceeds Zone of Eco driving,
ECO lamp turns off. [P. 90] However, when Eco drive mode is selected, while
the acceleration exceeds Zone of Eco driving, ECO lamp does not turn off.):
• Driving with the shift lever in D
• Paddle shift switch is not operated.
• Either normal mode or Eco drive mode is selected.
• The vehicle speed is approximately 80 mph (130 km/h) or below.
■Customization
Settings (e.g. on/off operatio n of ECO lamp) can be changed.
(Customizable features: P. 559)
NOTICE
■To prevent damage to the engine and its components
●Do not let the indicator needle of the tachometer enter the red zone, which indi-
cates the maximum engine speed.
●The engine may be overheating if the engine coolant temperature gauge is in the
red zone (H). In this case, immediately stop the vehicle in a safe place, and check
the engine after it has cooled completely. ( P. 5 2 7 )

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3-2. Opening, closing and locking the doors and trunk
CAUTION
■Trunk easy closer (vehicles with power trunk opener and closer)
■Power trunk opener and closer (if equipped)
Observe the following precautions when operating the power trunk opener and
closer.
Failure to do so may cause serious injury.
●Check the safety of the surrounding area to make sure there are no obstacles or
anything that could cause any of your belongings to get caught.
●If anyone is in the vicinity, make sure they are safe and let them know that the
trunk is about to open or close.
●If the trunk closer switch is pressed whil e the trunk lid is opening during automatic
operation, the trunk lid stops opening. Take extra care when on an incline, as the
trunk lid may open or close suddenly.
●On an incline, the trunk lid may suddenly shut after it opens automatically. Make
sure the trunk lid is fully open and secure before using the trunk.
●In the following situations, the power trunk opener and closer may detect an
abnormality and automatic operation may be stopped. In this case, the trunk lid
has to be operated manually. Take extra care in this situation, as the stopped trunk
lid may suddenly shut, causing an accident.
• When the trunk lid contacts an obstacle
• When the battery voltage suddenly drops, such as when the engine switch is
turned to IGNITION ON mode or the engine is started during automatic
operation
●Do not attach any accessories other than genuine Lexus parts to the trunk lid. The
power trunk opener and closer may not op erate, causing itself to malfunction, or
the trunk lid may suddenly shut again after it is opened.
In the event that the trunk lid is left slightly
open, the trunk easy closer will automatically
close it to the fully closed position. It takes
several seconds before the trunk easy closer
begins to operate. Be careful not to catch fin-
gers or anything else in the trunk lid, as this
may cause bone fractures or other serious
injuries.

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1393-3. Adjusting the seats
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Operation of each component
■Operating the driving position memory after turning the engine switch off
Driver’s seat:
Recorded seat positions can be activated up to 180 seconds after the driver’s door is
opened and another 60 seconds after it is closed again.
Front passenger’s seat:
Recorded seat positions can be activated up to 180 seconds after the front passen-
ger’s door is opened.
■In order to correctly use the dr iving position memory function
If a seat position is already in the furthest possible position and the seat is operated in
the same direction, the recorded position ma y be slightly different when it is recalled.
Each electronic key can be registered to recall your preferred driving
position.
■Registering procedure
Record your driving position to button “1”, “2” or “3” before performing
the following:
Carry only the key you want to regis ter, and then close the driver’s door.
If 2 or more keys are in the vehicle, the driving position cannot be
recorded properly.
Check that the shift lever is in P.
Turn the engine switch to IGNITION ON mode.
Recall the driving position th at you want to record.
Memory recall function (driver’s side only)
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