tire pressure Lexus GS350 2008 Do-it-yourself maintenance / LEXUS 2008 GS460/350 (OM30A87U) Service Manual

565
6-1. Specifications
6
Vehicle specifications
GS_G_U
May 13, 2008 5:14 pm
Tire related termMeaning
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
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 bear s manufacturer, brand,
and/or model name molding that is higher or
deeper than the same molding on the other side-
wall of the tire, or
(b) The outward facing sidewall of asymmetrical tire that has a particular side that must always face
outward when mounted on a vehicle

566
6-1. Specifications
GS_G_U
May 13, 2008 5:14 pm
Tire related termMeaning
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
Measuring rimThe rim on which a tire is fitted for physical dimension
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 side-
walls 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 10,000 lb. or
less
PlyA layer of rubber-coated parallel cords
Ply separationA parting of rubber comp ound between adjacent
plies

567
6-1. Specifications
6
Vehicle specifications
GS_G_U
May 13, 2008 5:14 pm
Tire related termMeaning
Pneumatic tire
A mechanical device made of rubber, chemicals, fab-
ric and steel or other materials, that, when mounted
on an automotive wheel, provides the traction and
contains the gas or fluid that sustains the load
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 side-
walls 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

575
6
Vehicle specifications
GS_G_U
May 13, 2008 5:14 pm
6-3. Initialization
Items to initialize
ItemWhen to initializeReference
Intuitive parking assist
• After reconnecting or changing the battery
• After changing a fuse
P. 5 0 7
Engine oil maintenance
data• After changing engine oilP. 4 1 2
Tire pressure warning
system
• When rotating the tires on vehicles differing with front and rear tire infla-
tion pressures.
• When changing the tire inflation pressure by changing traveling speed
or load weight, etc.
• When changing the tire size.
P. 4 2 3
After reconnecting or performing main tenance on the 12 volt battery, the
following items must be initialized for normal system operation.

583
Abbreviation list
GS_G_U
May 13, 2008 5:14 pm
ABBREVIATIONSMEANING
PCSPre-Collision System
SRSSupplemental Restraint System
TINTire Identification Number
TPMSTire Pressure Monitoring (Warning) System
TRACTraction Control
VDIMVehicle Dynamics Integrated Management
VGRSVariable Gear Ratio Steering
VINVehicle Identification Number
VSCVehicle Stability Control

590
Alphabetical index
GS_G_U
May 13, 2008 5:14 pm
Smart access system with 
push-button start Antenna location....................................24
Entry function...........................................22
Starting the engine ................................121
Spare tire Inflation pressure............................... 550
Spare tire..................................................513
Spark plug ................................................546
Specifications ........................................ 540
Speedometer........................................... 132
Steering wheel Adjustment............................................... 60
Audio switches ...................................288
Steering wheel position 
memory...................................................47
Storage compartment ........................ 344
Storage feature......................................340
Stuck If your vehicle becomes stuck.....536
Sun visors ................................................. 347
Switch “ENGINE START STOP” 
switch .......................................................121
Fog light switch .....................................145
Ignition switch..........................................121
Light switches ........................................ 142
Mode select switch............................. 126
Power door lock switch .....................37
Power window switch ........................ 64
Tire pressure warning 
reset switch ....................................... 422
Tire pressure 
warning select switch................... 424
Window lock switch ........................... 64
Wipers and washer switch .............146 Tachometer ..............................................132
Tail lights
Switch ........................................................ 142
Theft deterrent system Alarm........................................................... 75
Immobilizer system .............................. 73
Theft prevention labels........................... 77
Tire inflation pressure .........................550
Tire information Glossary ................................................ 562
Size ........................................................... 559
Tire identification number .............558
Uniform Tire Quality Grading ... 560
Tires Chains..................................................... 200
Checking................................................. 421
Compact spare tire............................ 513
If you have a flat tire ............... 512, 522
Inflation pressure ...............................550
Information ........................................... 556
Replacing ................................................ 512
Rotating tires.......................................... 421
Size ...........................................................550
Snow tires.............................................. 202
Tire pressure warning system....... 421
Tools.............................................................512
Total load capacity ................................ 198
Touch screen..........................................208
Towing Dinghy towing .................................... 205
Emergency towing ........................... 478
Trailer towing ...................................... 204
Traction control...................................... 184
Trip meter ..................................................132T

591
Alphabetical index
GS_G_U
May 13, 2008 5:14 pm
TrunkOpener....................................................... 42
Trunk light .................................................43
Wattage ................................................. 552
Turn signal lights Replacing light bulbs ....................... 470
Switch ........................................................130
Wattage ................................................. 552
Vanity lights Vanity lights .......................................... 348
Wattage ................................................. 552
Vanity mirrors........................................ 348
Variable gear ratio steering ..............185
Vehicle dynamics 
integrated management ..................185
Vehicle identification number .......... 541
Vehicle load limits..................................198
Vehicle stability control .......................184
Ventilators............................................... 354
Warning buzzers Brake system .......................................488
Downshifting.......................................... 128
Open door .......................................... 490
Seat belt reminder ............................ 490
Warning lights Anti-lock brake system .................. 489
Brake system .......................................488
Charging system ...............................488
Electric power steering warning light ..................................... 489
Electronically 
controlled brake system/ 
Vehicle stability control .............. 489
Low fuel level....................................... 490 Malfunction indicator lamp .......... 489
Master warning light.......................... 491
Open door ........................................... 490
Pre-collision system......................... 489
Seat belt reminder light.................. 490
SRS airbags.......................................... 489
Tire pressure warning light .......... 490
Warning messages Anti-lock brake system .................... 501
Brake assist ............................................ 501
Dynamic radar cruise control................................... 500
Engine oil level ................................... 504
Engine oil maintenance ................. 504
Engine oil pressure ........................... 497
Headlight............................................... 498
Hill-start assist control ...................... 501
Hood ....................................................... 502
Intuitive parking 
assist ............................ 499, 505, 507
Moon roof ............................................ 503
Open door ........................................... 502
Parking brake ..................................... 503
Pre-collision system.............499, 505
Rear lights system ............................. 498
Smart access system with 
push-button start ........................... 508
Steering lock............................. 498, 510
Tire pressure warning 
system .....................................498, 504
TRAC........................................................ 501
Trunk ....................................................... 503
VGRS ....................................................... 501
VSC/ECB.............................................. 501
Washer fluid ........................................ 503
V
W

595
What to do if...
GS_G_U
May 13, 2008 5:14 pm
The warning light or indicator
light comes onP. 4 8 8If the warning light turns on
■Warning lights
or orv
P. 4 8 8P. 4 8 9
P. 4 9 0
or
P. 4 8 9P. 4 9 0
P. 4 8 9P. 4 9 0
P. 4 9 0P. 4 8 9
P. 4 8 9P. 4 8 9
P. 4 9 0P. 4 9 1
*: Electronically Controlled Brake 
System
P. 4 8 8
Brake system warning lightMalfunction indicator lamp
ABS warning lightDriver’s seat belt reminder 
light
Front passenger’s seat belt
reminder light
ECB*/VSC warning lightTire pressure warning light
Low fuel level warning lightElectric power steering
warning light
SRS warning lightPre-collision system warn-
ing light
Open door warning lightMaster warning light
Charging system warning
light
The warning message is dis-
playedP. 4 9 7If the warning message is displayed

596
GS_G_U
May 13, 2008 5:14 pm
GAS STATION INFORMATION
Auxiliary catch lever
P. 4 0 3
Trunk opener
P. 4 2
Fuel filler door
P. 7 0
Hood lock release lever
P. 4 0 3
Fuel filler door opener
P. 7 0
Tire inflation pressure
P. 5 5 0
Fuel tank capacity18.7 gal. (71 L, 15.6 Imp.gal.)
Fuel typePremium unleaded gasoline onlyP. 71, 543
Cold tire inflation 
pressureP. 5 5 0
Engine oil capacity
(Drain and refill)
With filter
Without filterqt. (L, Imp.qt.)
GS460 GS350 (2WD) GS350 (4WD)
9.1 (8.6, 7.6) 6.6 (6.3, 5.5) 6.7 (6.4, 5.6)
8.9 (8.4, 7.4) 6.2 (5.9, 5.2) 6.3 (6.0, 5.3)
Engine oil type“Toyota Genuine Motor Oil” or equivalent
Oil grade: ILSAC multigrade engine oil P. 544