LEXUS LS430 2006 Owners Manual

375
6-1. Specifications
6
Vehicle specifications
NOTICE
■Notice of gasoline quality
●Do not use leaded gasoline. 
Leaded gasoline can cause damage to your vehicle’s three-way catalytic convert -
ers causing the emission control system to malfunction.
●Do not use gasohol other than stated above. 
It will cause fuel system damage or vehicle performance problems.
●Use of unleaded fuel with an octane number or rating lower than stated above
will cause persistent heavy knocking. 
If severe, this will lead to engine damage.
■Fuel-related poor driveability
If after using a different type of fuel, poor driveability is encountered (poor hot start -
ing, vaporization, engine knoc king,
etc.), discontinue the use of that type of fuel.
■When refueling with gasohol
Take care not to spill gasohol: 
It may cause paint damage.

376
6-1. Specifications
Tire information
Ty p i c a l t i r e s y m b o l s
Tire size(P.377 )
DOT and Tire Identification Number (TIN) ( P.377 )
Location of tread wear indicators ( P.278 )
Tire ply composition and materials
Plies are layers of rubber-coated parallel cords. Cords are the strands
which form the plies in a tire.
Radial tires or bias-ply tires
A radial tire has “RADIAL” on the sidewall. A tire not marked “RADIAL” is a
bias-ply tire.
“TUBELESS” or “TUBE TYPE”
A tubeless tire does not have a tube and air is directly filled in the tire. A tube
type tire has a tube inside the tire and the tube maintains the air pressure.
Load limit at maximum cold tire inflation pressure ( P.283 )
1
2
3
4
5
6
7

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6-1. Specifications
6
Vehicle specifications
Typical DOT and tire identification number (TIN)
“DOT” symbol*
Tire Identification Number (TIN)
Tire manufacturer’s identifica -
tion mark
Tire size code
Manufacturer’s optional tire
type code (3 or 4 letters)
Manufacturing week
Manufacturing year
* The “DOT” symbol certifies that the tire conforms to applicable
Federal Motor Vehicle Safety
Standards.
Maximum cold tire inflation pressure ( P.364 )
This means the pressure to which a tire may be inflated.
Uniform tire quality grading
For details, see “Uniform tire quality grading” that follows.
Summer tire or all season tire (P.379 )
An all season tire has “M+S” on the sidewall. A tire not marked “M+S” is a
summer tire.
8
9
10
1
2
3
4
5
6
7

378
6-1. Specifications
Tire size
■Typical tire size information
The illustration indicates typical
tir
e size.
Tire use 
(P = Passenger car, T = Tempo -
rary use)
Section width (in millimeters)
Aspect ratio 
(tire height to section width)
Tire construction code
R = Radial, D = Diagonal
Wheel diameter (in inches)
Load index 
(2 digits or 3 digits)
Speed symbol 
(alphabet with one letter)
■ T
ire measurements
Section width
Ti r e h e i g h t
Wheel diameter
1
2
3
4
5
6
7
8
1
2
3

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6-1. Specifications
6
Vehicle specifications
Tire section names
Bead
Sidewall
Shoulder
Tread
Belt
Inner liner
Reinforcing rubber
Carcass
Rim lines
Bead wires
Chafer
Uniform tire quality grading
This information has been prepared in accordance with regulations
issued by the National Highway Traffic Safety Ad ministration of the U.S.
Department of Transportation. 
It provides the purchasers and/or prospective purchasers of Lexus vehi -
cles with information on uniform tir
e quality grading.
Your Lexus dealer will help answer any que
stions you may have as you
read this information.
■ DO
T quality grades
All passenger vehicle tires must co nform to F
ederal Safety Require -
ments in addition to these grades. Quality gr
ades can be found where
applicable on the tire sidewall between tread shoulder and maximum
section width.
For example: Tread wear 200 Traction AA Temperature A
1
2
3
4
5
6
7
8
9
10
11

380
6-1. Specifications
■Tread wear
The tread wear grade is a comparative rating based on the wear rate of
the tir

e when tested under controll ed conditions on a specified gov -
ernment test course.
For example, a tire graded 150 would wear one and a half (1 - 1 /2) times as
well on the government course as a tire graded 100. 
The relative performance of tires de pends upon the actual conditions of
their
use, however, and may depart significantly from the norm due to varia -
tions in driving habits, service practices
and differences in road characteris-
tics and climate.
■ Traction AA, A, B, C
The traction grades, from highest to lo
west, are AA, A, B and C, and
they represent the tire’s ability to stop on wet pavement as measured
under controlled condit ions on specified government test surfaces of
asphalt and concrete.
A tire marked C may have poor traction performance.
Warning: The traction grade assigned to this tir
e is based on braking
(straight ahead) traction tests and does not include cornering (turning) trac-
tion.

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6-1. Specifications
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Vehicle specifications
■Temperature A, B, C
The temperature grades are A (the hi ghest), B
, and C, representing
the tire’s resistance to the generation of heat and its ability to dissipate
heat when tested under controlled conditions on a specified indoor
laboratory test wheel.
Sustained high temperature can cause the material of the tire to degenerate
and reduce tire life, and excessive temperature can lead to sudden tire fail -
ure.
The grade C corresponds to a level of performance which all passenger car
tir
es must meet under the Federal Moto r Vehicle Safety Standard No. 109.
Grades B and A represent higher levels of performance on the laboratory
test wheel than the minimum r
equired by law.
Warning: The temperature grades for this tire are established for a tire that
is pr
operly inflated and not overloaded. 
Excessive speed, under inflation, or ex ces
sive loading, either separately or
in combination, can cause heat buildup and possible tire failure.

382
6-1. Specifications
Glossary of tire terminology
Tire related termDefinition
Accessory weight
The combined weight (in excess 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)
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 under that condition
Curb weight
The weight of a motor vehicl e with standard equipment,
including the maximum capacity of fuel, oil and coolant,
and if so equipped, air conditioning and additional weight
optional engine
Maximum inflation 
pressure
The maximum cold inflated pressure to which a tire may
be inflated, shown on the sidewall of the tire
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
Production options weight
The combined weight of installed regular production
options weighing over 5 lb. (2.3 kg) in excess of the stan -
dard items which they replace, not previously considered
in curb weight or accessory weight, including heavy duty
brakes, ride levelers, roof rack, heavy duty battery, and
special trim
Vehicle capacity weight
(Total load capacity)The rated cargo and luggage load plus 150 lb. (68 kg)
times the vehicle’s designated seating capacity

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6-1. Specifications
6
Vehicle specifications
*: Table 1  Occupant loading and distribution for vehicle normal load for various
designated seating capacities
Tire related termDefinition
Intended outboard 
sidewall
(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 outward
when mounted on a vehicle
Occupant distributionDistribution of occupants in a vehicle as specified in the
third column of Table 1* below
Recommended 
inflation pressure
Cold tire inflation pressure recommended by a manufac -
turer.
RimA metal support for a tire or a tire and tube assembly
upon which the tire beads are seated
Rim diameter 
(Wheel diameter)Nominal diameter of the bead seat
Rim size designationRim diameter and width
Rim type designationThe industry manufacturer’s designation for a rim by style
or code
Rim widthNominal distance between rim flanges
Vehicle maximum load on
the tireThe load on an individual tire that is determined by dis -
tributing 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 dis-
tributing to each axle its share of curb weight, accessory
weight, and normal occupant weight (distributed 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
Designated seating capac -
ity, Number of occupants
Vehicle normal load, Num -
ber of occupants
Occupant distribution in a
normally loaded vehicle
2 through 422 in front
5 through 1032 in front, 1 in second seat

384
6-2. Owner’s customize
Customizable features
ItemFunctionDefaultsettingAfter
customization
Wireless remote 
control 
(  P.12
)
Door unlock function
One push
unlocks
driver’s door; second push
unlocks all doors
Ask your Lexus dealer
Open door warning function
(when locking the vehicle)ONOFF
Automatic door locking function (if
a door is not opened after being
unlocked)
30 seconds60 seconds
Operation indicator lightONOFF
Trunk unlock functionAsk your Lexus dealer
Door lock 
(  P.15
)
Unlock function
One push
unlocks
driver’s door; second push
unlocks all doors
Ask your Lexus dealer
Automatic door locking function
Shift position
detecting
automatic door lock
function
Speed detect -
ing automatic
door loc
k func-
tion
Shift position
and brake
pedal detect -
ing automatic
door loc
k func-
tion
Your vehicle includes a variety of electronic features that can be personalized
to your preferences. Programming these preferences requires specialized
equipment and may be performed by an authorized Lexus dealership.