engine oil LEXUS LS430 2005 Owners Manual

IMPORTANT INFORMATION ABOUT YOUR LEXUS
iv
New vehicle warranty
Your new vehicle is covered by the following Lexus limited
warranties:
New vehicle warranty
 Emission control systems warranty
 Others
For further information, please refer to the “Owner’s Guide”,
“Owner’s Manual Supplement” or “Warranty Booklet”.
Your responsibility for maintenance
It is the owner’s responsibility to make sure the specified
maintenance is performed. Section 5 of this Owner’s Manual
gives details of these maintenance requirements. Included in
Section 6 is general maintenance. For scheduled
maintenance information, please refer to the “Owner’s Manual
Supplement / Scheduled Maintenance”.
Important health and safety information about
your Lexus
CAUTION
 WARNING: Engine exhaust, some of its constituents,
and a wide variety of automobile components
contain or emit chemicals known to the State of
California to cause cancer and birth defects and
other reproductive harm. In addition, oils, fuels and
fluids contained in vehicles as well as waste
produced by component wear contain or emit
chemicals known to the State of California to cause
cancer and birth defects or other reproductive harm.
 Battery posts, terminals and related accessories
contain lead and lead compounds. Wash your hands
after handling. Used engine oil contains chemicals
that have caused cancer in laboratory animals.
Always protect your skin by washing thoroughly with
soap and water.

GAUGES, METERS AND SERVICE REMINDER INDICATORS
94
(c) Warning messages
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W40W253
When the engine oil pressure becomes too low, the
master warning light comes on, a warning tone sounds
and the above message appears.
If this message appears while you are driving, pull off the road
to a safe place and stop the engine immediately. Call a Lexus
dealer or qualified repair shop for assistance.
The message may appear when the oil level is extremely low.
It is not designed to indicate low oil level, and the oil level must
be checked using the oil level dipstick.
NOTICE
Do not drive the vehicle while this warning message is
displayed even for one block. It may ruin the engine.
W41W254
When your brake pads have worn down enough to require
replacement, the master warning light flashes and a
warning tone sounds and the above message appears.
If this message appears while you are driving, have the brake
pads checked and replaced by your Lexus dealer as soon as
possible.
W50W255
When the engine oil level is too low, the master warning
light flashes, a warning tone sounds, and the above
message appears.
Add oil as soon as possible. (For instructions, see “Checking
the engine oil level” on page 452.)
While driving on steep inclines or rough roads which causes
the vehicle to substantially sway or on curves, this message
may appear due to the movement of engine oil in the engine.

GAUGES, METERS AND SERVICE REMINDER INDICATORS
95
In normal conditions, due to engine oil consumption, this
message may a
ppear earlier than the specified service interval
of the scheduled maintenance. This is because the engine oil
is consumed to the low level within the scheduled maintenance
interval and does not indicate a problem. (For detailed
information, see “Facts about engine oil consumption” on page
450.)
NOTICE
Continued engine operation with low engine oil will
damage the engine.
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This message indicates that the engine oil maintenance
data has been reset. After replacing the engine oil, be sure
to reset the maintenance data.
To reset the data, perform the following operations:
1. Push the “ODO/TRIP” button to change the display to
blank.
2. Turn the ignition switch off.
3. Turn the ignition switch to “ON” with the trip meter
“RESET” button held down.
4. Keep pushing the “RESET” button for longer than 5
seconds after the ignition is turned on.
After the above operation, the master warning light comes
on, a warning tone sounds and the above message
appears to inform you that the engine oil maintenance
data has been reset. (U.S.A. only)

GAUGES, METERS AND SERVICE REMINDER INDICATORS
96
w283
If the driving range exceeds 4,500 miles after the engine
oil maintenance data is reset, the master warning light
comes on, a warning tone sounds and the above message
appears for about 15 seconds when you turn the ignition
switch to “ON”. (U.S.A. only)
This message indicates that the engine oil should be replaced
soon. If the message appears, it is recommended to inspect
the engine oil with the ignition off. For details about inspection,
see “Checking the engine oil level” on page 452.
If the engine oil level is low, engine oil should be replaced.
Have it replaced at your Lexus dealer.
After the engine oil replacement, reset the engine oil
maintenance data and make sure the “Mileage Reset” appears
in the display.
NOTICE
The warning message in the display is based on the
driving range after the engine oil maintenance data
reset. This is not based on the monitoring of dirty
condition of the engine oil.
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If the driving range exceeds 5,000 miles after the engine
oil maintenance data is reset, the master warning light
comes on, a warning tone sounds and the above message
appears. (U.S.A. only)
This message indicates that the engine oil should be replaced
as soon as possible. If the message appears, it is
recommended to inspect the engine oil with the ignition off. For
details about inspection, see “Checking the engine oil level” on
page 452.
If the engine oil level is low, engine oil should be replaced.
Have it replaced at your Lexus dealer.
After the engine oil replacement, reset the engine oil
maintenance data and make sure the “Mileage Reset” appears
in the display.
NOTICE
The warning message in the display is based on the
driving range after the engine oil maintenance data
reset. This is not based on the monitoring of dirty
condition of the engine oil.

DRIVING TIPS
384
WINTER DRIVING TIPS
Make sure you have a proper freeze protection for engine
coolant.
Only use “Toyota Super Long Life Coolant” or similar high
quality ethylene glycol based non−silicate, non −amine,
non− nitrite, and non −borate coolant with long −life hybrid
organic acid technology. (Coolant with long −life hybrid organic
acid technology is a combination of low phosphates and
organic acids.)
See “Checking the engine coolant level” on page 455 for
details of coolant type selection.
For the U.S.A.—“Toyota Super Long Life Coolant” is a mixture
of 50% coolant and 50% deionized water. This coolant
provides protection down to about −35C (− 31F).
For Canada—“Toyota Super Long Life Coolant” is a mixture of
55% coolant and 45% deionized water. This coolant provides
protection down to about −42C (− 44F).
NOTICE
Do not use plain water alone.
Check the condition of the battery and cables.
Cold temperatures reduce the capacity of any battery, so it
must be in top shape to pr ovide enough power for winter
starting. Page 496 tells you how to visually inspect the battery.
Your Lexus dealer and most service stations will be pleased to
check the battery charge level. Make sure the engine oil viscosity is suitable for the cold
weather.
See page 454 for recommended viscosity. Leaving a heavy
summer oil in your vehicle during winter months may cause
harder starting. If you are not sure about which oil to use, call
your Lexus dealer
− they will be pleased to help.
Check the electronic ignition system for loose
connections or obvious damage.
Keep the door locks from freezing.
Squirt lock de −icer or glycerine into the locks to keep them from
freezing.
Use a washer fluid containing an antifreeze solution.
This product is available at your Lexus dealer and most auto
parts stores. Follow the manufacturer’s directions for how
much to mix with water.
NOTICE
Do not use engine antifreeze or any other substitute
because it may damage your vehicle’s paint.
Do not use your parking brake when there is a possibility
it could freeze.
When parking, put the transmission into “P” and block the front
wheels. Do not use the parking brake, or snow or water
accumulated in and around the parking brake mechanism may
freeze the parking brake, making it hard to release.

DRIVING TIPS
393

Keep your vehicle tunedup and in top shape. A dirty air
cleaner, improper valve clearance, dirty plugs, dirty oil and
grease, brakes not adjusted, etc. all lower engine
performance and contribute to poor fuel economy. For
longer life of all parts and lower operating costs, keep all
maintenance work on schedule, and if you often drive under
severe conditions, see that your vehicle receives more
frequent maintenance. (For scheduled maintenance
information, please refer to the “Owner’s Manual
Supplement / Scheduled Maintenance”.)
CAUTION
Never turn off the engine to coast down hills. Your
power steering and brake booster will not function
without the engine running. Also, the emission control
system operates properly only when the engine is
running.
VEHICLE LOAD LIMITS
Vehicle load limits include total load capacity, seating
capacity, towing capacity and cargo capacity . Follow the
load limits shown below. Total load capacity and seating
capacity are also described on the tire and loading
information label. For location of the tire and loading
information label, see “Checking tire inflation pressure”
on page 468.
Total load capacity: 410 kg (900 lb.)
Total load capacity means combined weight of
occupants, cargo and luggage. Tongue load is included
when trailer towing.
Seating capacity: Total 5 (Front 2, Rear 3)
Seating capacity means the maximum number of
occupants whose estimated average weight is 68 kg
(150 lb.) per person. Depending on the weight of each
person, the seating capacity given may exceed the total
load capacity.
NOTICE
Even if the number of occupants are within the
seating capacity, do not exceed the total load
capacity.

MAINTENANCE
428Battery
Your Lexus has a maintenance free battery. You do not have
to add distilled water. For longer life of the battery, however,
see page 496 for additional information.
Brake fluid level
Make sure the brake fluid level is correct. See page 466 for
additional information.
Engine oil level
Check the level on the dipstick with the engine turned off and
the vehicle parked on a level spot.
See page 452 for additional
information.
Power steering fluid level
Check the level through the reservoir. The level should be in
the “HOT” or “COLD” range depending on the fluid
temperature. See page 467 for additional information.
Exhaust system
If you notice any change in the sound of the exhaust or smell
exhaust fumes, have the cause located and corrected
immediately. (See “Engine exhaust cautions” on page 297.)
Vehicle interior
Items listed below should be checked regularly, e.g. while
performing periodic services, cleaning the vehicle, etc.
Lights
Make sure the headlights, stop lights, tail lights, turn signal
lights, and other lights are working. Check headlight aim.
Service reminder indicators and warning buzzers
Check that all service reminder indicators and warning
buzzers function properly.
Steering wheel
Check that it ha s the specified free play. Be alert for changes
in steering condition, such as hard steering, excessive free
play or strange noise.
Seats
Check that all front seat controls such as seat adjusters,
seatback recliner, etc. operate smoothly. Check that the head
restraints move up and down smoothly and that the locks hold
securely in any latched position.
Seat belts
Check that the seat belt system such as buckles, retractors
and anchors operate properly and smoothly. Make sure the
belt webbing is not cut, frayed, worn or damaged.

MAINTENANCE
429
Accelerator pedal
Check
the pedal for smooth operation and uneven pedal ef fort
or catching.
Brake pedal
Check the pedal for smooth operation and the proper
clearance and free play. Check the brake booster function.
Brakes
In a safe place, check that the brakes do not pull to one side
when applied.
Parking brake
Check that the pedal has the proper travel and that, on a safe
incline, your vehicle is held securely with only the parking
brake applied.
Automatic transmission “Park” mechanism
On a safe incline, check that your vehicle is held securely with
the selector lever in “P” position and all brakes released.
Vehicle exterior
Items listed below should be performed from time to time,
unless otherwise specified.
Fluid leaks
Check underneath for leaking fuel, oil, water or other fluid after
the vehicle has been parked for a while. If you smell fuel fumes
or notice any leak, have the cause found and corrected
immediately.
Doors and engine hood
Check that all doors, including trunk lid, operate smoothly and
all latches lock securely. Make sure the engine hood
secondary latch secures the hood when the primary latch is
released.
Wheel nuts
When checking the tires, make sure to check the nuts for
looseness. Tighten them if necessary.
Tire inflation pressure
Check the pressure with a gauge every two weeks, or at
least once a month and adjust as shown on the tire
loading and information label. See page 468 for
additional information.
Tire surface
Check the tires carefully for cuts, damage or excessive
wear. See page 481 for additional information.

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INTRODUCTION
436
ENGINE COMPARTMENT OVERVIEW
1 Fuse box
2 Battery
3 Engine oil filler cap
4 Engine oil level
dipstick
5 Brake fluid reservoir
6 Washer fluid tank
7 Radiator
8 Condenser
9 Engine coolant
reservoir
10 Electric cooling fans
11 Power steering fluid
reservoir

INTRODUCTION
437
DOITYOURSELF SERVICEPRECAUTIONS
If you perform maintenance yourself, be sure to follow the
correct procedure given in this Section.
You should be aware that improper or incomplete servicing
may result in operating problems.
Performing do −it−yourself maintenance during the warranty
period may affect your warranty coverage. Read the separate
Lexus Warranty statement for details and suggestions.
This Section gives instructions only for those items that are
relatively easy for an owner to perform. As explained in
Section 5, there are still a number of items that must be
performed by a qualified technician with special tools.
For information on tools and parts for do −it −yourself
maintenance, see “Parts and tools” on page 439.
Utmost care should be taken when working on your vehicle to
prevent accidental injury. Here are a few precautions that you
should be especially careful to observe:
CAUTION
 When the engine is running, keep hands, clothing,
and tools away from the moving fan and engine drive
belt. (Removing rings, watches, and ties is
advisable.)
 Right after driving, the engine compartment the
engine, radiator, exhaust manifold and power
steering fluid reservoir, etc. will be hot. So be
careful not to touch them. Oil and other fluids may
also be hot.
 Do not leave anything that may burn easily, such as
paper or rags, in the engine compartment.
 Do not smoke, cause sparks or allow open flames
around fuel or the battery. Their fumes are
flammable.
 Do not get under your vehicle with just the body jack
supporting it. Always use automotive jack stands or
other solid supports.
 Be sure the ignition is off if you work near the electric
cooling fan or radiator grille. With the ignition on, the
electric cooling fan may automatically start to run if
the air conditioning is on and/or if the coolant
temperature is high.
 Use eye protection whenever you work on or under
your vehicle where you may be exposed to flying or
falling material, fluid spray, etc.
 Be extremely cautious when working on the battery.
It contains poisonous and corrosive sulfuric acid.