engine LEXUS LS430 2006 Owners Manual

5
When trouble arises
361
5-2. Steps to take in an emergency
If the vehicle becomes stuck
CAUTION
■When removing the stuck vehicle
If you choose to rock the vehicle back and forth to free it, make sure the surround-
ing area is clear, to avoid striking other vehicles, objects or persons. The vehicle
may
also lunge forward or lunge back suddenly as it becomes free, use extreme
caution.
NOTICE
■To avoid damaging the transmission and other components
●Do not operate the selector lever while depressing the accelerator pedal.
●Avoid spinning the wheels and do not rev the engine.
●If the vehicle remains stuck after trying these procedures the vehicle may require
towing to be freed.
Carry out the following procedures if the tires spin or the vehicle becomes
stuck in mud, dirt, or snow to the extent that it cannot move.
• Stop the engine. Set the parking brake and put the transmission
selector lever in “P”.
• Remove the mud, snow, or sand from around the stuck tire.
• Place wood, stones or some other ma terial to help pr
ovide traction
under the tires.
• Restart the engine.
• Turn off the traction control system. ( P.141)
• Carefully apply the accelerator to free the vehicle.

365
6-1. Specifications
6
Vehicle specifications
Vehicle identification
The vehicle identification number (VIN) is the legal identifier for your
vehicle. This is the primar y identification number for your Lexus. It is used
in registering the ownership of your vehicle.
This number is stamped on the top
lef
t of the instrument panel.
This number is also on the Certifi-
cation Label.
Engine
Model3UZ-FE
Ty p e8 cylinder V type, 4 cycle, gasoline
Bore and stroke3.58  3.25 in. (91.0  82.5 mm)
Displacement261.9 cu.in. (4293 cm3)
Valve clearance 
(engine cold) 
Intake exhaust
0.006 - 0.010 in. (0.15 - 0.25 mm) 
0.010 - 0.014 in. (0.25 - 0.35 mm)
Drive belt tensionAutomatic adjustment

366
6-1. Specifications
Fuel
Lubrication system
*5W-30 is an oil that provides optimal levels of fuel efficiency
Oil viscosity
• “5W” oils are for use in ar
eas where the ambient temperature is -13 F (-
25 C) or above. “10W” oils are fo r areas where the ambient tempera -
ture is -4 F (-
20C) or above. Oils with smaller figures are better for
engine starting in cold we ather and fuel efficiency.
• “XX-30” indicates oil viscosity. O ils with lar
ger figures have better ther-
mostability and are good for high-speed driving.
Fuel typeUnleaded gasoline only
Octane rating91 (Research octane number 96) or higher
Fuel tank capacity22.2 gal. (84 L, 18.5 lmp.gal)
Oil capacity
(drain and refill) with filter
without filter
5.4 qt. (5.1 L, 4.5 lmp.qt.)
4.8 qt. (4.5 L, 4.0 lmp.qt.)
Oil gradeILSAC multigrade engine oil
Recommended oil 
viscosity
Use Lexus approved “Toyota Genuine
Motor Oil” or equivalent to satisfy the
above grade and viscosity.
Temperature range anticipated before
next oil change 5W-30*

367
6-1. Specifications
6
Vehicle specifications
Cooling system
Ignition system
Capacity10.0 qt. (9.5 L, 8.4 lmp.qt.)
Coolant type
Use either of the following.
• “Toyota Super Long Life Coolant”
• Similar high quality ethylene glycol based non-silicat
e, non-amine, non-nitrite, and
non-borate coolant with long-life hybrid
organic acid technology
Do not use plain water alone.
Spark plug
-MakeDENSOSK20R11
NGKIFR6A11
- Gap0.043 in. (1.1 mm)
NOTICE
■Iridium-tipped spark plugs
Use only iridium-tipped spark plugs. Do not
adjust gap when tuning engine.

369
6-1. Specifications
6
Vehicle specifications
Automatic Transmission
Brakes
* Minimum pedal clearance when depressed with the force of 44 lbf. (196 N, 20 kgf ) with the engine running
** Parking brake adjustment when depressed with the for
ce of 66.1 lbf. (294 N, 30
kgf )
Steering
Fluid capacity 
Drain and refill1.8 qt. (1.7 L, 1.5 lmp.qt.)
Fluid typeToyota Genuine ATF WS 
(ATF JWS3324 or NWS9638)
Pedal clearance *2.8 in. (70 mm) Min.
Pedal free play0.04 - 0.24 in. (1 - 6 mm)
Brake pad wear limit0.04 in. (1.0 mm)
Parking brake lining wear limit0.04 in. (1.0 mm)
Parking brake adjustment **5 - 7 clicks
Fluid typeSAE J1703 or FMVSS No. 116 DOT 3
Free playLess than 1.2 in. (30 mm)
Power steering fluidAutomatic transmission fluid DEXRONII or
III

373
6-1. Specifications
6
Vehicle specifications
Fuel information
■Fuel tank opening for unleaded gasoline
●To help prevent incorrect fueling, your Lexus has a fuel tank opening that will
only accept the special nozzle on unleaded fuel pumps.
●If premium fuel is not available, you may temporarily use unleaded gasoline with
an Octane Rating as low as 87 (Research Octane Number 91).
■If your engine knocks ...
●Consult your Lexus dealer.
●You may occasionally notice light knocking for a short time while accelerating
or driving up hills. This is normal and there is no need for concern.
■Gasoline quality
In very few cases, driveability problems may be caused by the brand of gasoline you
ar

e 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 US, Europe and Japan have developed a
specification for fuel quality called World-Wide Fuel Charter (WWFC) that is
expected to be applied worldwide.
●The WWFC consists of four categories that are based on required emission
levels. In the US, category 3 has been adopted.
●The WWFC improves air quality by lowering emissions in vehicle fleets, and
customer satisfaction through better vehicle performance.
Your vehicle must use on ly unleaded gasoline. 
Select premium unleaded gasoline with an
Octane Rating of 91 (Research
Octane Number 96) or higher for optimum engine performance.
At minimum, the gasoline you use sh ould meet the specifications of
ASTM D4814 in the USA and CGSB 3.5-M93 in Canada.

374
6-1. Specifications
■Lexus recommends the use of gasoline containing detergent additives
●Lexus recommends the use of gasoline that contains detergent additives to
avoid build-up of engine deposits.
●All gasoline sold in the US contains detergent additives to clean and/or keep
clean intake systems.
■Lexus recommends the use of cleaner burning gasoline
Cleaner burning gasoline, including reform ulated gasoline that conta
ins oxygen-
ates such as ethanol or MTBE (Methyl Tertiary Butyl Ether) is available in many
ar

eas.
Lexus recommends the use of cleaner burning gasoline and appropriately blended
r
eformulated gasoline. These types of gasoline provide excellent vehicle perfor -
mance, reduce vehicle emissions, and improve air quality.
■Lexus does not recommend blended gasoline
●Lexus allows the use of oxygenate blended gasoline where the oxygenate con -
tent is up to 10% ethanol or 15% MTBE.
●If you use gasohol in your Lexus, be sure that it has an octane rating no lower
than 87.
●Lexus DOES NOT recommend the use of gasoline containing methanol.
■Lexus does not recommend gasoline containing MMT
Some gasolines contain an octane enhanc
ing additive called MMT (Methylcyclo-
pentadienyl Manganese Tricarbonyl).
Lexus DOES NOT recommend the use of gasoline that contains MMT. If fuel con -
taining MMT is used, your emission control system may be adversely affected.
The Malfunction Indicator Lamp on the inst rum
ent cluster may come on. If this hap-
pens, contact your Lexus dealer for service.

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.

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

387
6-2. Owner’s customize
6
Vehicle specifications
Initializing your Lexus
ItemMaintenance performedReference
Po w e r w i n d o wReconnected, replaced or
recharged battery.P. 4 5
Moon roofReconnected, replaced or
recharged battery.P. 4 8
Tire pressure warning sys-
tem
Adjusted tire inflation
pressure, replaced tires or
wheels.
P. 2 7 9
Engine oil maintenance
dataChanged engine oil.P. 2 6 5
Air conditioning filter clog-
ging data
Replaced air conditioning
filters.P. 2 9 3
The following features must be initialized after certain maintenance is per-
formed to ensure the system operates correctly.