2006 Lexus GS430 maintenance schedule

IMPORTANT INFORMATION ABOUT YOUR LEXUS
ivLexus will not disclose the data recorded in an EDR to a third
party except when:

An agreement from the vehicle’s owner (or the leasing
company for a leased vehicle) is obtained
 Officially requested by the police or other authorities
 Used as a defense for Lexus in a law suit
 Ordered by the court
However, if necessary Lexus will:
 Use the data for research on Lexus vehicle safety
performance
 Disclose the data to a third party for research purposes
without disclosing details of the vehicle owner, and only
when it is deemed necessary
 Disclose summarized data cleared of vehicle identification
information to a non −Lexus organization for research
purposes
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. W ash your hands
after handling. Used engine oil contains chemicals
that have caused cancer in laboratory animals.
Always p rotect your skin by washing thoroughly with
soap and water.

GAUGES, METERS AND SERVICE REMINDER INDICATORS
87
Low Engine Oil Level Warning
G13022
When the engine oil level is too low, the master warning
light comes on, 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 522.)
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.
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
520.)
NOTICE
Continued engine operation with low engine oil will
damage the engine.
 Engine Oil Maintenance Reset Warning (U.S.A.
only)
G13033
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” switch in the switch box to
change the display to blank.
2. Turn the engine switch off.
3. Turn the engine switch on with the trip meter “RESET”
switch held down.
4. Keep pushing the “RESET” switch for longer than 7
seconds after the engine switch 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.

AIR CONDITIONING
270
G21012
The air conditioning filter is behind the glove box.
The air conditioning filter may clog after long use. The filter
may need to be replaced if the air flow of the air conditioning
and heater experiences extreme reductions in operating
efficiency, or if the windows fog up easily.
If the symptoms of air conditioning efficiency problems occur,
contact your nearest Lexus dealer to have the filter replaced.
To maintain the air conditioning efficiency, replace the air
conditioning filter according to the maintenance schedule. In
dusty areas or areas with heavy traffic flow, such as inner city
or desert areas, early replacement may be required. (For
scheduled maintenance information, see the “Owner’s Manual
Supplement / Scheduled Maintenance”). 1. Turn the air intake control to RECIRCULATED AIR
mode.
The filter case cannot be removed in the OUTSIDE AIR mode.
2. Turn off the engine switch.
3. When you replace the filter, be sure to turn off the fan.G21013
4. Open
the glove box and remove the partition by pulling.
G21019

STARTING AND DRIVING
341

Avoid racing the engine.
 Do not pushstart or pullstart your vehicle.
 Do not turn off the engine while the vehicle is moving.
 Keep your engine in good running order.
Malfunctions in the engine electrical system,
electronic ignition system or fuel system could cause
an extremely high threeway catalytic converter
temperature.
 If the engine becomes difficult to start or stalls
frequently, take your vehicle in for a checkup as
soon as possible. Remember, your Lexus dealer
knows your vehicle and its threeway catalytic
converter system best.
 To ensure that the threeway catalytic converter and
the entire emission control system operate properly,
your vehicle must receive the periodic inspections
required by the Lexus Maintenance Schedule. For
scheduled maintenance information, refer to the
“Owner’s Manual Supplement / Scheduled
Maintenance”.
ENGINE EXHAUST CAUTION
CAUTION
Avoid inhaling the engine exhaust. It contains
carbon monoxide, which is a colorless and odorless
gas. It can cause unconsciousness or even death.
 Make sure the exhaust system has no holes or loose
connections. The system should be checked from
time to time. If you hit something, or notice a change
in the sound of the exhaust, have the system checked
immediately.
 Do not run the engine in a garage or enclosed area
except for the time needed to drive the vehicle in or
out. The exhaust gases cannot escape, making this
a particularly dangerous situation.
 Do not remain for a long time in a parked vehicle with
the engine running. If it is unavoidable, however, do
so only in an unconfined area and adjust the heating
or cooling system to force outside air into the vehicle.
 Keep the trunk lid closed while driving. An open or
unsealed trunk lid may cause exhaust gases to be
drawn into the vehicle.

DRIVING TIPS
455

Avoid continuous speeding up and slowing down.
Stop−and−go driving wastes fuel.
 Avoid unnecessary stopping and braking. Maintain a
steady pace. Try to time the traf fic signals so you only need
to stop as little as possible or take advantage of through
streets to avoid traffic lights. Keep a proper distance from
other vehicles to avoid sudden braking. This will also
reduce wear on your brakes.
 Avoid heavy traffic or traffic jams whenever possible.
 Do not rest your foot on the brake pedal. This causes
premature wear, overheating and poor fuel economy.
 Maintain a moderate speed on highways. The faster you
drive, the greater the fuel consumption. By reducing your
speed, you will cut down on fuel consumption.
 Keep the front wheels in proper alignment. Avoid hitting
the curb and slow down on rough roads. Improper
alignment not only causes faster tire wear but also puts an
extra load on the engine, which, in turn, wastes fuel.
 Keep the bottom of your vehicle free from mud, etc.
This not only lessens weight but also helps prevent
corrosion. 
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.

SECTION 5
491
MAINTENANCE
Maintenance
Maintenance requirements492
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
General maintenance 493
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .\

Does your vehicle need repairing? 496
. . . . . . . . . . . . . . . . . . . . . . . . .
Emissions inspection and maintenance (I/M) programs 497
. . . . . . . .
For scheduled maintenance informa tion, please refer
to the “Owner’s Manual Supplement / Scheduled
Maintenance”.

MAINTENANCE
492
MAINTENANCE REQUIREMENTS
Your Lexus vehicle has been designed for fewer maintenance
requirements with longer service intervals to save both your
time and money. However, each regular maintenance as well
as day−to−day care is more important than ever before to
ensure smooth, trouble−free, safe, and economical driving.
It is the owner’s responsibility to make sure the specified
maintenance, including general maintenance services, is
performed. Note that both the new vehicle and emission
control system warranties specify that proper maintenance
and care must be performed. See “Owner’s Guide”, “Owner’s
Manual Supplement” or “Warranty Booklet” for complete
warranty information.
General maintenance
General maintenance items are those day −to −day care
practices that are important to your vehicle for proper
operation. It is the owner’s responsibility to ensure that the
general maintenance items are performed regularly.
These checks or inspections can be done either by yourself or
your Lexus dealer.
Scheduled maintenance
The scheduled maintenance items listed in the “Owner’s
Manual Supplement / Scheduled Maintenance” are those
required to be serviced at regular intervals.
For details of your maintenance schedule, read the “Owner’s
Manual Supplement / Scheduled Maintenance”.
It is recommended that only genuine Lexus parts be used
for maintenance or for the repair of the emission control
system.
The owner may elect to use nonLexus supplied parts for
replacement purposes without invalidating the emission
control system warranty. However, use of replacement
parts which are not of equivalent quality may impair the
effectiveness of the emission control systems.
You may also elect to have maintenance, replacement, or
repair of the emission control devices and system
performed by any automotive repair establishment or
individual without invalidating this warranty. See
“Owner’s Guide”, “Owner’s Manual Supplement” or
“Warranty Booklet” for complete warranty information.

MAINTENANCE
495
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.
Wheel nuts
When checking the tires, make sure to check the nuts for
looseness. Tighten them if necessary. 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.
Tire inflation pressure
Check the tire inflation pressure with a gauge every two
weeks, or at least once a month and adjust as shown on
the tire and loading information label. See page 539 for
additional information.
Tire surface
Check the tires carefully for cuts, damage or excessive
wear. See page 554 for additional information.
Tire rotation
Rotate the tires according to the maintenance schedule.
(For scheduled maintenance information, please refer to
the “Owner’s Manual Supplement / Scheduled
Maintenance”.) See page 554 for additional information.