2021 Lexus GX460 fuel cap

454
GX460_OM_OM60T19U_(U)6-2. Maintenance
Emission inspection and maintenance (I/M) programs
The OBD system determines that a problem exists somewhere in the emission
control system. Your vehicle may not pass the I/M test and may need to be
repaired. Contact your Lexus dealer to service the vehicle.
●When the battery is disconnected or discharged
Readiness codes that are set duri
ng ordinary driving are erased.
Also, depending on your driving habits , the readiness codes may not be com-
pletely set.
●When the fuel tank cap is loose
The malfunction indicator lamp comes on indicating a temporary malfunction
and your vehicle may not pass the I/M test.
The error code in the OBD system will not be cleared unless the vehicle \
is driven
40 or more times.
Contact your Lexus dealer to pr epare the vehicle for re-testing.
Some states have vehicle emission inspection programs which include OBD
(On Board Diagnostics) checks. The OBD system monitors the operation of
the emission control system.
If the malfunction indicator lamp comes on
Your vehicle may not pass the I/M te st in the following situations:
When the malfunction indicator lamp still remains on after several driv-
ing trips
If your vehicle does not pass the I/M test

486
GX460_OM_OM60T19U_(U)6-3. Do-it-yourself maintenance
■Tire inflation pressure check interval
You should check tire inflation pressure ever
y two weeks, or at least once a month. Do
not forget to check the spare.
■Effects of incorrect tire inflation pressure
Driving with incorrect tire inflation pressure may result in the following:
●Reduced fuel economy
●Reduced driving comfort and poor handling
●Reduced tire life due to wear
●Reduced safety
●Damage to the drive train
If a tire needs frequent inflating, ha ve it checked by your Lexus dealer.
■Instructions for checking tire inflation pressure
When checking tire inflation pressure, observe the following:
●Check only when the tires are cold.
If your vehicle has been parked for at le ast 3 hours and has not been driven for more
than 1 mile or 1.5 km, you will get an accu rate cold tire inflation pressure reading.
●Always use a tire pressure gauge.
It is difficult to judge if a tire is properly inflated based only on its appearance.
●It is normal for the tire inflat ion pressure to be higher after driving as heat is generated
in the tire. Do not reduce tire inflation pressure after driving.
●Never exceed the vehicle capacity weight.
Passengers and luggage weight should be placed so that the vehicle is balanced.

5227-2. Steps to take in an emergency
GX460_OM_OM60T19U_(U)
*1: This light illuminates on the multi-information display.
*2: Open door warning buzzer: The open door warning buzzer sounds to al ert hood or one or more of the doors or
glass hatch are not fully closed (with the vehicle having reached a speed of 3 mph [5
km/h]).
*3: Driver’s seat belt warning buzzer:
The driver’s seat belt warning buzzer sounds to alert the driver that his or her seat belt
is not fastened. Once the engine switch is turned to ON, the buzzer sounds. If the seat
belt is still unfastened, the buzzer sounds intermittently for a certain period of time
after the vehicle reaches a certain speed.
Front passenger’s seat belt warning buzzer:
The front passenger’s seat belt warning buzzer sounds to alert the front passenger
that his or her seat belt is not fastened. If the seat belt is unfastened, the buzzer sounds
intermittently for a certain period of time after the vehicle reaches a certain speed.
■SRS warning light
This warning light system monitors the airbag sensor assembly, front airbag sensors, side
and curtain shield airbag sensors, rear side and curtain shield airbag sensors, floor sen-
sor, driver’s seat belt buc kle switch, front passenger occupant classification system (ECU
and sensors), “AIR BAG ON” indicator light, “AIR BAG OFF” indicator light, front pas-
senger’s seat belt buckle sw itch, seat belt pretensioner assemblies, airbags, intercon-
necting wiring and power sources. ( P. 36)
■Front passenger detection sensor, seat belt reminder and warning buzzer
●If luggage is placed on the front passenger seat, the front passenger detection sensor
may cause the warning light to flash and the warning buzzer to sound even if a passen-
ger is not sittin g in the seat.
●If a cushion is placed on the seat, the sens or may not detect a passenger, and the warn-
ing light may not operate properly.
■If the malfunction indicator lamp comes on while driving
First check the following:
●Is the fuel tank empty?
If it is, fill the fu el tank immediately.
●Is the fuel tank cap loose?
If it is, tighten it securely.
The light will go off after several driving trips.
If the light does not go off even after severa l trips, contact your Lexus dealer as soon as
possible.

560
GX460_OM_OM60T19U_(U)8-1. Specifications
Maintenance data (fuel, oil level, etc.)
*1: Unladen vehicles
*2: Vehicles without shark fin antenna and roof rails
*3: Vehicles without shark fin antenna and with roof rails
*4: Vehicles with shark fin antenna
*5: Vehicles without rear heig
ht control air suspension
*6: Vehicles with rear height control air suspension
Dimensions and weights
Overall length189.2 in. (4880 mm)
Overall width74.2 in. (1885 mm)
Overall height*1
71.7 in. (1820 mm)*2, 6
72.0 in. (1830 mm)*2, 5
72.2 in. (1835 mm)*3, 6
72.6 in. (1845 mm)*3, 5
73.8 in. (1875 mm)*4, 6
74.2 in. (1885 mm)*4, 5
Wheelbase109.8 in. (2790 mm)
Front and rear tread62.4 in. (1585 mm)
Vehicle capacity weight
(Occupants + luggage)1280 lb. (580 kg)*6
1315 lb. (595 kg)*5
TWR (trailer weight +
cargo weight) (With
towing hitch)With brake6500 lb. (2950 kg)
Without brake1000 lb. (453 kg)
Seating capacity
Seating capacity7-passenger models6-passenger models
7 (Front 2, Rear 5)6 (Front 2, Rear 4)

562
GX460_OM_OM60T19U_(U)8-1. Specifications
■Engine number
The engine number is stamped on
the engine block as shown.
*: The engine oil capacity is a reference quantity to be used when changing the engine
oil. Warm up and turn off the engine, wait more than 5 minutes, and check the oil level
on the dipstick.
Engine
Model4.6 L 8-cylinder (1UR-FE)
Type8-cylinder V type, 4-cycle, gasoline
Bore and stroke3.70  3.27 in. (94.0  83.0 mm)
Displacement281.2 cu.in. (4608 cm3)
Valve clearanceAutomatic adjustment
Drive belt tensionAutomatic adjustment
Fuel
Fuel typeUnleaded gasoline only
Octane rating91 (Research Octane Number 96) or higher
Fuel tank capacity (Reference)23.0 gal. (87 L, 19.1 Imp.gal.)
Lubrication system
Oil capacity
(Drain and refill — reference*)
With filter
Without filter8.2 qt. (7.8 L, 6.9 Imp.qt.)
7.8 qt. (7.4 L, 6.5 Imp.qt.)

GX460_OM_OM60T19U_(U)
5798-1. Specifications
8
Vehicle specifications
Glossary of tire terminology
Tire related termMeaning
Cold tire inflation pressure
Tire pressure when the vehicle has been parked for
three hours or more, or has not been driven more than 1
mile or 1.5 km un der that condition
Maximum inflation pres-
sureThe maximum cold inflated pr essure to which a tire may
be inflated, shown on the sidewall of the tire
Recommended inflation
pressureCold tire inflation pressure recommended by a manu-
facturer
Accessory weight
The combined weight (in exce ss of those standard items
which may be replaced) of automatic transmission,
power steering, power brakes, power windows, power
seats, radio and heater, to the extent that these items are
available as factory-installed equipment (whether
installed or not)
Curb weight
The weight of a motor vehicle with standard equipment,
including the maximum capacity of fuel, oil and coolant,
and if so equipped, air co nditioning and additional
weight optional engine
Maximum loaded vehicle
weight
The sum of:
(a) Curb weight
(b) Accessory weight
(c) Vehicle capacity weight
(d) Production options weight
Normal occupant weight150 lb. (68 kg) times the numb er of occupants specified
in the second column of Table 1* that follows
Occupant distributionDistribution of occupants in a vehicle as specified in the
third column of Table 1
* below
Production options weight
The combined weight of in stalled regular production
options weighing over 5 lb. (2.3 kg) in excess of the
standard items which they re place, not previously con-
sidered in curb weight or accessory weight, including
heavy duty brakes, ride levelers, roof rack, heavy duty
battery, and special trim
RimA metal support for a tire or a tire and tube assembly
upon which the tire beads are seated

618Alphabetical index
GX460_OM_OM60T19U_(U)
Fuel ............................................................. 562Capacity .................................................562
Fuel gauge ................................................90
Fuel pump shut off system.............. 517
Information ........................................... 570
Refueling................................................. 229
Type ............................................. 562, 570
Warning light ...................................... 520
Fuel consumption information ......... 100
Fuel filler door ........................................ 229 Refueling................................................. 229
Fuel gauge .................................................. 90
Fuel pump shut off system...................517
Fuses .......................................................... 494
Garage door opener .......................... 433
Gauges ........................................................ 90
Glass hatch .............................................. 120
Glove box ................................................ 404
Hands-free system (for cellular phone)
*
Head restraints ....................................... 150
Headlights .................................................213 Light switch .............................................213
Replacing light bulbs ....................... 505
Headlights cleaner............................... 228
Heaters Automatic air conditioning system ..................................... 384, 394
Seat heaters ......................................... 398
Outside rear view mirrors ............ 389
Height control........................................ 339
Hill-start assist control ........................ 356 Hood ......................................................... 458
Hooks
Cargo hooks ................................ 410, 411
Coat hooks ........................................... 428
Retaining hooks (floor mat)............. 26
Horn............................................................. 153
I/M test ..................................................... 454
Identification Engine ..................................................... 562
Vehicle ......................................................561
Ignition switch (engine switch) ....... 200
Ignition switch light .............................. 400
Illuminated entry system ................... 402
Immobilizer system ................................. 77
Indicators .................................................... 84
Initialization Items to initialize .................................593
Maintenance data.................. 449, 462
Moon roof ...............................................164
Power windows..................................... 161
Tire pressure warning system ..... 474
Inside rear view mirror......................... 155
Instrument panel light control .............. 91
Interior lights .......................................... 400 Switch ........................................................401
Wattage .................................................569
Jack Vehicle-equipped jack ................... 532
Jack handle ............................................. 535
Jam protection function Moon roof ...............................................164
Power windows..................................... 161
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I
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621Alphabetical index
GX460_OM_OM60T19U_(U)
Personal lights........................................400Switch........................................................ 401
Wattage ................................................. 569
Power outlet ............................................. 421
Power windows ...................................... 160 Jam protection function ..................... 161
Operation ............................................... 160
Window lock switch.......................... 160
Pre-Collision System (PCS) ............ 239 Enabling/disabling the system .... 242
Function ..................................................239
Warning light ........................................ 519
Radiator .................................................... 465
Radio
*
Rear seat ....................................................134 Adjustment ............................................. 134
Rear turn signal lights ............................ 211 Replacing light bulbs ....................... 502
Turn signal lever .................................... 211
Wattage ................................................. 569
Rear view mirror Inside rear view mirror ..................... 155
Outside rear view mirrors .............. 157
Rear view monitor system ................ 278
Rear window defogger ...................... 389
Rear window wiper.............................. 226
Refueling .................................................. 229 Capacity .................................................562
Fuel types ...............................................562
Opening the fuel tank cap...............231 Replacing
Electronic key battery ..................... 492
Fuses ........................................................ 494
Light bulbs............................................. 499
Tires ............................................................531
Wireless remote control battery .................................................. 492
Reporting safety defects for U.S. owners .................................. 596
Reset the maintenance data .............449
Safety connect............................................ 71
Seat belts .................................................... 30 Adjusting the seat belt.......................... 31
Automatic Locking Retractor .........32
Child restraint system installation ............................................. 58
Cleaning and maintaining the seat belt ....................................... 446
Emergency Locking Retractor.......32
How to wear your seat belt............. 28
How your child should wear the seat belt ...........................................32
Pregnant women, proper seat belt use......................... 33
Reminder light and buzzer ...........520
Seat belt pretensioners........................ 31
Seat belt extender .................................32
SRS warning light ............................... 518
R
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*: Refer to the “NAVIGATION SYSTEM OWNER’S MANUAL” or “MULTIMEDIA OWNER’S MANUAL”.