flat tire Lexus GX460 2010 Scheduled Maintenance Guide / LEXUS 2010 GX460 (OM60E69U) Service Manual

772
6-1. Specifications
GX460_U.S.A. (OM60E69U)
Glossary of tire terminology
Tire related termMeaning
Cold tire inflation 
pressureTire 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 under that condition
Maximum inflation pres-
sureThe maximum cold inflated pressure to which a tire
may be inflated, shown on the sidewall of the tire
Recommended inflation
pressureCold tire inflation pressure recommended by a man-
ufacturer
Accessory weight
The combined weight (in excess of those standard
items which may be replaced) of automatic trans-
mission, power steering, power brakes, power win-
dows, 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 equip-
ment, including the maximum capacity of fuel, oil
and coolant, and if so equipped, air conditioning and
additional weight optional engine

774
6-1. Specifications
GX460_U.S.A. (OM60E69U)
Tire related termMeaning
Rim type designationThe industry manufacturer’s designation for a rim by
style or code
Rim widthNominal distance between rim flanges
Vehicle capacity weight
(Total load capacity)The rated cargo and luggage load plus 150 lb. (68
kg) times the vehicle’s designated seating capacity
Vehicle maximum load on
the tireThe load on an individual tire that is determined by
distributing to each axle its share of the maximum
loaded vehicle weight, and dividing by two
Vehicle normal load on
the tire
The load on an individual tire that is determined by
distributing to each axle its share of curb weight,
accessory weight, and normal occupant weight (dis-
tributed in accordance with Table 1* below), and
dividing it by two
We a t h e r s i d eThe surface area of the rim not covered by the
inflated tire
Bead
The part of the tire that is made of steel wires,
wrapped or reinforced by ply cords and that is
shaped to fit the rim
Bead separationA breakdown of the bond between components in
the bead

775
6-1. Specifications
6
Vehicle specifications
GX460_U.S.A. (OM60E69U)
Tire related termMeaning
Bias ply tire
A pneumatic tire in which the ply cords that extend
to the beads are laid at alternate angles substantially
less than 90 degrees to the centerline of the tread
CarcassThe tire structure, except tread and sidewall rubber
which, when inflated, bears the load
ChunkingThe breaking away of pieces of the tread or sidewall
CordThe strands forming the plies in the tire
Cord separationThe parting of cords from adjacent rubber com-
pounds
CrackingAny parting within the tread, sidewall, or innerliner
of the tire extending to cord material
CT
A pneumatic tire with an inverted flange tire and rim
system in which the rim is designed with rim flanges
pointed radially inward and the tire is designed to fit
on the underside of the rim in a manner that
encloses the rim flanges inside the air cavity of the
tire
Extra load tire
A tire designed to operate at higher loads and at
higher inflation pressures than the corresponding
standard tire
GrooveThe space between two adjacent tread ribs

776
6-1. Specifications
GX460_U.S.A. (OM60E69U)
Tire related termMeaning
InnerlinerThe layer(s) forming the inside surface of a tubeless
tire that contains the inflating medium within the tire
Innerliner separationThe parting of the innerliner from cord material in
the carcass
Intended outboard side-
wall
(a)The sidewall that contains a whitewall, bears white
lettering, or bears manufacturer, brand, and/or
model name molding that is higher or deeper than
the same molding on the other sidewall of the tire, or
(b)The outward facing sidewall of asymmetrical tire
that has a particular side that must always face out-
ward when mounted on a vehicle
Light truck (LT) tire
A tire designated by its manufacturer as primarily
intended for use on lightweight trucks or multipur-
pose passenger vehicles
Load ratingThe maximum load that a tire is rated to carry for a
given inflation pressure
Maximum load ratingThe load rating for a tire at the maximum permissible
inflation pressure for that tire
Maximum permissible
inflation pressureThe maximum cold inflation pressure to which a tire
may be inflated

777
6-1. Specifications
6
Vehicle specifications
GX460_U.S.A. (OM60E69U)
Tire related termMeaning
Measuring rimThe rim on which a tire is fitted for physical dimen-
sion requirements
Open spliceAny parting at any junction of tread, sidewall, or
innerliner that extends to cord material
Outer diameterThe overall diameter of an inflated new tire
Overall width
The linear distance between the exteriors of the
sidewalls of an inflated tire, including elevations due
to labeling, decorations, or protective bands or ribs
Passenger car tire
A tire intended for use on passenger cars, multipur-
pose passenger vehicles, and trucks, that have a
gross vehicle weight rating (GVWR) of 10000 lb. or
less
PlyA layer of rubber-coated parallel cords
Ply separationA parting of rubber compound between adjacent
plies
Pneumatic tire
A mechanical device made of rubber, chemicals,
fabric and steel or other materials, that, when
mounted on an automotive wheel, provides the trac-
tion and contains the gas or fluid that sustains the
load

778
6-1. Specifications
GX460_U.S.A. (OM60E69U)
Tire related termMeaning
Radial ply tire
A pneumatic tire in which the ply cords that extend
to the beads are laid at substantially 90 degrees to
the centerline of the tread
Reinforced tire
A tire designed to operate at higher loads and at
higher inflation pressures than the corresponding
standard tire
Section width
The linear distance between the exteriors of the
sidewalls of an inflated tire, excluding elevations due
to labeling, decoration, or protective bands
SidewallThat portion of a tire between the tread and bead
Sidewall separationThe parting of the rubber compound from the cord
material in the sidewall
Snow tire
A tire that attains a traction index equal to or greater
than 110, compared to the ASTM E-1136 Standard
Reference Test Tire, when using the snow traction
test as described in ASTM F-1805-00, Standard
Test Method for Single Wheel Driving Traction in a
Straight Line on Snow-and Ice-Covered Surfaces,
and which is marked with an Alpine Symbol ( )
on at least one sidewall

812
Alphabetical index
GX460_U.S.A. (OM60E69U)
Conversation mirror ...........................534
Cool box...................................................528
Cooling systemEngine overheating .......................... 744
Cornering assist sensors ...................259
Crawl Control........................................323
Cruise control Cruise control ..................................... 242
Dynamic radar cruise control ..... 246
Cup holders ............................................ 522
Curtain shield airbags............................ 121
Customizable features ........................ 781
Daytime running light system .......... 224
DAC........................................................... 327
Defogger Rear window ........................................ 404
Side mirror ............................................404
Dimension ................................................750
Dinghy towing ....................................... 380
Display Dynamic radar cruise control ..... 246
Multi-information 
display ........................................ 204, 212
Trip information ........................ 204, 212
Warning message............................ 698
Do-it-yourself maintenance .............602
Door courtesy lights Door courtesy lights............................ 511
Wattage.................................................... 761
Door pocket............................................520
Doors Back door................................................. 54
Power windows..................................... 101
Door lock...........................................48, 51
Rear door child protector ................ 52 Side doors.................................................. 51
Side mirrors.............................................. 97
Downhill assist control system ........ 327
Driver’s seat belt reminder light ..... 690
Driving Correct posture..................................... 119
Off-road precautions...................... 348
Procedures.............................................168
Winter driving tips .............................. 361
Driving position memory...................... 79
Electronic key If the electronic key does not 
operate properly............................ 738
Emergency, in case of If the electronic key does not 
operate properly............................ 738
If the engine will not start ................734
If the shift lever cannot be 
shifted from P....................................736
If the vehicle has discharged 
battery ................................................... 741
If the warning buzzer sounds...... 686
If the warning light turns on.......... 686
If the warning message is 
displayed ............................................ 698
If you have a flat tire .........................720
If you lose your keys ......................... 737
If you think something is 
wrong ....................................................681
If your vehicle becomes stuck ..... 747
If your vehicle needs to be 
towed ................................................... 675
If your vehicle overheats.................744
Emergency flashers Switch .......................................................674
D
E

817
Alphabetical index
GX460_U.S.A. (OM60E69U)
SeatsAdjustment .............................64, 68, 79
Adjustment 
precautions ......................... 67, 77, 82
Child seats/child restraint 
system installation ............................ 152
Cleaning ................................................ 592
Driver’s seat position memory .......79
Folding down the second 
seatbacks ........................................70, 71
Folding down the third seats ........... 73
Head restraint ........................................ 83
Properly sitting in the seat.................119
Seat heaters............................................551
Seat position memory .........................79
Ventilated seats ....................................551
Service reminder indicators .............198
Shift lever Automatic transmission....................186
If the shift lever cannot be 
shifted from P ................................... 736
Shift lever lighting.................................... 511
Shift lock system ....................................736
Side airbags ................................................121
Side marker lights Replacing light bulbs ...........665, 667
Switch ...................................................... 220
Wattage ................................................... 761
Side mirror Adjusting and folding ..........................97
Mirror position memory ....................79
Side turn signal lights Replacing light bulbs ....................... 670 Smart access system with

push-button start Antenna location ................................... 32
Entry functions ........................................ 29
Starting the engine ..............................179
Spare tire Inflation pressure ............................... 760
Storage location .................................720
Spark plug................................................ 755
Specifications .........................................750
Speedometer .......................................... 195
Steering Column lock release......................... 183
Fluid.......................................................... 760
Steering wheel Adjustment ............................................... 94
Audio switches....................................452
Heated steering wheel ................... 549
Steering wheel position 
memory .................................................. 79
Stop light Replacing light bulbs ....................... 670
Storage feature....................................... 515
Stuck If your vehicle becomes stuck ..... 747
Sun visors .................................................. 531
Switch “ENGINE START STOP” 
switch......................................................179
Engine switch .........................................179
“2nd STRT” switch..............................188
Center differential lock/unlock  switch..................................................... 318
“DAC” switch....................................... 327
Emergency flasher Switch............. 674

818
Alphabetical index
GX460_U.S.A. (OM60E69U)
Fog light switch ................................... 233
Hazard light Switch .......................... 674
Heated steering wheel switch.....549
Height control off switch................. 310
Ignition switch........................................ 179
Light switches ...................................... 220
Power door lock switch ...................... 51
Power window switch ........................ 101
“RSCA OFF” switch.......................... 138
Rear window defogger switch ................................................... 404
Transmission shift switch................. 189
Window lock switch ........................... 101
Wipers and washer switch ........... 235
Tachometer .............................................. 195
Tail lights Replacing light bulbs........................ 670
Switch ...................................................... 220
Talk switch
*............................................482
Telephones switch
*.............................482
Theft deterrent system Alarm .......................................................... 116
Engine immobilizer system ..............114
Tire inflation pressure ......................... 634
Tire information Glossary..................................................772
Size ........................................................... 768
Tire identification number ............. 767
Uniform Tire Quality Grading.... 770
Tires Chains .......................................................361
Checking ............................................... 627
If you have a flat tire .......................... 720
Inflation pressure................................ 760
Information............................................ 765 Pressure warning system ............... 627
Replacing ...............................................720
Rotating tires......................................... 627
Size ........................................................... 760
Snow tires................................................ 361
Spare tire ................................................720
Tire pressure warning

system................................................... 627
Tools........................................................... 720
Total load capacity ............................... 359
Towing Dinghy towing ....................................380
Emergency towing ........................... 675
Trailer towing ...................................... 365
TRAC ..........................................................331
Traction control.......................................331
Trailer towing ......................................... 365
Transmission shift switches................ 189
Trip information display ....................... 212
Trip meter ................................................. 195
Turn signal lights Replacing light bulbs ........... 666, 667
Switch ........................................................ 192
Wattage ................................................... 761
Vanity lights Vanity lights.......................................... 532
Wattage ................................................... 761
Vanity mirrors ........................................... 532
Vehicle identification number...........751
Vehicle load limits ................................ 359
Ventilators ................................................ 551
VSC (Vehicle Stability Control) ....330
T
V

820
GX460_U.S.A. (OM60E69U)
What to do if...
What to do if...
A tire puncturesP. 7 2 0If you have a flat tire
The engine does not start
P. 1 1 4Engine immobilizer system
P. 7 3 4If the engine will not start
P. 74 1If the battery is discharged
The shift lever cannot be 
moved outP. 7 3 6If the shift lever cannot be shifted 
from “P”
The engine coolant temperature
gauge enters the red zone
Steam can be seen coming 
from under the hood
P. 74 4If your vehicle overheats
The key is lostP. 7 3 7If you lose your keys
The battery is dischargedP. 74 1If the vehicle has a discharged battery
The doors cannot be lockedP. 5 1Side doors
P. 5 4Back door
The horn begins to soundP. 1 1 6Alarm
The vehicle is stuck in mud or
sandP. 74 7If the vehicle becomes stuck