2015 Lexus GS350 fuel pump

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GS350_OM_OM30F69U_(U)
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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

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GS350_OM_OM30F69U_(U)
When trouble arises7
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

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When trouble arises
7-2. Steps to take in an emergency
Fuel pump shut off system
Follow the procedure below to restar t the engine after the system is acti-
vated.
Turn the engine switch to ACCESSORY mode or turn it off.
Restart the engine.
To minimize the risk of fuel leakage when the engine stalls or when an
airbag inflates upon collision, the fuel pump shut off system stops the
supply of fuel to the engine.
NOTICE
■Before starting the engine
Inspect the ground under the vehicle.
If you find that fuel has leaked onto th e ground, the fuel system has been damaged
and is in need of repair. Do not restart the engine.
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8-1. Specifications
Fuel information
■Fuel tank opening for unleaded gasoline
To help prevent incorrect fueling, your vehicle has a fuel tank opening that only
accommodates the special nozzle on unleaded fuel pumps.
■Gasoline quality
In very few cases, driveability problems ma y be caused by the brand of gasoline you
are using. If driveability problems persist, try changing the brand of gasoline. If this
does not correct the problem, consult your Lexus dealer.
■Gasoline quality standards
●Automotive manufacturers in the U.S.A., Europe and Japan have developed a
specification for fuel quality called the World-Wide Fuel Charter (WWFC), which
is expected to be applied worldwide.
●The WWFC consists of four categories that are based on required emission levels.
In the U.S., category 4 has been adopted.
●The WWFC improves air quality by lowering emissions in vehicle fleets, and
improves customer satisfaction through better performance.
You must only use unleaded gasoline in your vehicle.
Select premium unleaded gasoline with an octane rating of 91
(Research Octane Number 96) or higher required for optimum engine
performance. If 91 octane cannot be obtained, you may use unleaded
gasoline with an octane rating as low as 87 (Research Octane Number
91). Use of unleaded gasoline with an octane rating lower than 91 may
result in engine knocking and signif icantly reduced performance. Per-
sistent knocking can lead to engine damage and should be corrected
by refueling with higher octane unleaded gasoline.
At minimum, the gasoline you us e should meet the specifications of
ASTM D4814 in the U.S.A..

GS350_OM_OM30F69U_(U)
5458-1. Specifications
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Vehicle specifications
■Recommendation of the use of gasoline containing detergent additives
●Lexus recommends the use of gasoline that contains detergent additives to avoid
the build-up of engine deposits.
●All gasoline sold in the U.S.A. contains minimum detergent additives to clean and/
or keep clean intake systems, per EPA’ s lowest additives concentration program.
●Lexus strongly recommends the use of Top Tier Detergent Gasoline. For more
information on Top Tier Detergent Gasoline and a list of marketers, please go to the
official website www.toptiergas.com.
■Recommendation of the use of cleaner burning gasoline
Cleaner burning gasoline, including reformul ated gasoline that contains oxygenates
such as ethanol or MTBE (Methyl Tertiary Butyl Ether) is available in many areas.
Lexus recommends the use of cleaner burn ing gasoline and appropriately blended
reformulated gasoline. These types of ga soline provide excellent vehicle perfor-
mance, reduce vehicle emissions and improve air quality.
■Non-recommendation of the use of blended gasoline
●If you use gasohol in your vehicle, be sure that it has an octane rating no lower than
87.
●Lexus does not recommend the use of gasoline containing methanol.
●Use only gasoline containing up to 15% eth-
anol.
DO NOT use any flex-fuel or gasoline that
could contain more than 15% ethanol,
including from any pump labeled E30, E50,
E85 (which are only some examples of fuel
containing more than 15% ethanol).DO NOT use gasoline con-
taining more than 15% ethanol.
(30% ethanol)
(50% ethanol)
(85% ethanol)

599Alphabetical index
GS350_OM_OM30F69U_(U)
First-aid kit storage net ...................... 337
Flat tire ...................................................... 502
Floor mats ................................................... 26
FluidAutomatic transmission ................. 539
Brake ....................................................... 540
Washer ...................................................407
Fog lights ................................................... 201 Replacing light bulbs ........... 445, 453
Switch........................................................ 201
Wattage ..................................................543
Footwell light .......................................... 327
Front passenger occupant classification system .............................47
Front personal lights............................ 328
Front seats .................................................134 Adjustment ............................................. 134
Cleaning .................................................378
Correct driving posture .................... 28
Driving position memory ................ 136
Head restraints ......................................142
Power easy access system ............ 136
Seat heaters .......................................... 347
Seat position memory....................... 136
Seat ventilators .................................... 347
Front side marker lights .......................196 Light switch ............................................ 196
Replacing light bulbs ........................453
Welcome light illumination control ................................................... 107 Front turn signal lights ..........................190
Replacing light bulbs ....................... 447
Turn signal lever .................................. 190
Wattage ................................................. 543
Fuel............................................................. 209 Capacity.................................................536
Fuel gauge .................................................81
Fuel pump shut off system ............ 467
Information............................................ 544
Refueling ................................................ 209
Type............................................. 209, 536
Warning light ......................................... 471
Warning messages ..........................490
Fuel filler door........................................ 209 Refueling ................................................ 209
When the fuel filler door cannot be opened ........................... 212
Fuel pump shut off system ................. 467
Fuses........................................................... 427
Garage door opener.......................... 359
Gauges.......................................................... 81
Glove box ............................................... 332
Glove box light...................................... 332
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