2004 Lexus GX470 fuel cap

MAINTENANCE
520
EMISSIONS INSPECTION AND
MAINTENANCE (I/M) PROGRAMS
Some states have vehicle emission inspection programs
which include OBD (On-Board Diagnostics) checks.
The OBD system monitors the operation of the emission
control system. When the OBD system determines that a
problem exists somewhere in the emission control system, the
malfunction indicator lamp comes on. In this case, your vehicle
may not pass the I/M test and need to be repaired. Contact
your Lexus dealer to service the vehicle.
Even if the malfunction indicator lamp does not come on, your
vehicle may not pass the I/M test as readiness codes have not
been set in the OBD system.
Readiness codes are automatically set during ordinary driving.
However, when the battery is disconnected or run down, the
codes are erased. Also, depending on your driving habits, the
codes may not be completely set.
Also, if the malfunction indicator lamp had come on recently
due to temporary malfunction such as a loose fuel tank cap,
your vehicle may not pass the I/M test.
The malfunction indicator lamp will go off after taking several
driving trips, but the error code in the OBD system will not be
cleared unless about 40 trips or more are taken.
If your vehicle does not pass the I/M test and the malfunction
indicator lamp does not come on, contact your Lexus dealer to
prepare the vehicle for re-testing.

INTRODUCTION
528
DO-IT-YOURSELF 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 toolsº on page 530.
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 Ð the
engine, radiator, exhaust manifold and power
steering fluid reservoir, etc. Ð will be hot. So be
careful not to touch them. Oil, other fluids and spark
plugs may also be hot.

If the engine is hot, do not remove the radiator cap or
loosen the drain plugs to prevent burning yourself.

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.

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.

ENGINE
535
Ð COOLING SYSTEM
Capacity
12.9 L (13.6 qt., 11.4 lmp. qt.)
Coolant typeToyota Super Long Life Coolantº 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.)
Do not use plain water alone.
NOTE:
Toyota Super Long Life Coolantº is filled in your Lexus vehicle at fac\
tory fill. In order to avoid technical problems, only u se Toyota
Super Long Life Coolantº or similar high quality ethylene glycol base\
d non-silicate, non-amine, non-nitrite, and non-borate coo lant
with long-life hybrid organic acid technology. (Coolant with long-life hybrid organic acid technology is a combination of low
phosphates and organic acids.) Please contact your Lexus dealer for fu\
rther details.
Ð FUEL
Fuel type
Only UNLEADED
Octane rating87 (Research octane number 91) or higher

ENGINE
539
Gasoline quality
In a very few cases, you may experience driveability problems
caused by the particular gasoline that you are using. If you
continue to have unacceptable driveability, try changing
gasoline brands. If this does not rectify your problem, then
consult your Lexus dealer.
NOTICE
Do not use gasohol other than stated above. It willcause fuel system damage or vehicle performanceproblems.
If drivability problems are encountered (poor hotstarting, vaporizing, engine knock, etc.), discontinueits use.
Take care not to spill gasohol during refueling.Gasohol may cause paint damage.
Fuel tank capacity
87 L (23 gal., 19.1 lmp. gal.)

ENGINE
546
Engine oil selection
Toyota Genuine Motor Oilº is used in your Lexus vehicle. Use
Lexus approved Toyota Genuine Motor Oilº or equivalent to
satisfy the following grade and viscosity.
Oil grade: API grade SL Energy-Conservingº or ILSAC
multigrade engine oil.
Recommended viscosity: SAE 5W-30
62Z002
Outside temperature
SAE 5W-30 is the best choice, for good fuel economy and
good starting in cold weather.
If SAE 5W-30 oil is not available, SAE 10W-30 may be
used. However, it should be replaced with SAE 5W-30 at
the next oil change.
Oil identification marks

API Service Symbol
ILSAC Certification Mark
Either or both API registered marks are added to some oil
containers to help you select the oil you should use.
 The API Service Symbol is located anywhere on the outside
of the container.
The top portion of the label shows the oil quality by API
(American Petroleum Institute) designation such as SL.
The center portion of the label shows the SAE viscosity
grade such as SAE 5W-30. Energy-Conservingº, shown
in the lower portion, indicates that the oil has fuel-saving
capabilities.
 The ILSAC (International Lubricant Standardization and
Approval Committee) Certification Mark is displayed on the
front of the container.

CHASSIS
569
Glossary of tire terminology
Tire related termMeaning
Accessory weightthe combined weight (in excess of those standard items which may be rep\
laced)
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
pressuretire inflation pressure when the vehicle has been parked for at least 3 \
hours or
more, or it has not been driven more than 1.5 km or 1 mile under that co\
ndition
Curb weightthe weight of a motor vehicle with standard equipment including the maxi\
mum
capacity of fuel, oil, and coolant, and, if so equipped, air conditionin\
g and
additional weight optional engine
Intended outboard
sidewall(a) the sidewall that contains a whitewall, bears white lettering or bearsmanufacturer, 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 an asymmetrical tire that has a particula\
r side that must always face outward when mounted on a vehicle
Maximum inflation
pressurethe maximum cold inflation pressure to which a tire may be inflated and \
it is
shown on the sidewall of the tire
Maximum loaded
vehicle weightthe sum of Ð
(a) curb weight;
(b) accessory weight;
(c) vehicle capacity weight; and
(d) production options weight
Normal occupant
weight68 kg (150 lb.) times the number of occupants specified in the second \
column of
Table 1 that follows

BODY
609
Ð FUEL TANKCapacity
87 L (23 gal., 19.1 lmp. gal.)

GAS STATION INFORMATION

Fuel selection:
Select Octane Rating 87 (Research Octane Number 91) or
higher. For improved vehicle performance, the use of
premium unleaded gasoline with an Octane Rating of 91
(Research Octane Number 96) or higher is recommended.

Fuel tank capacity:
87 L (23 gal., 19.1 lmp. gal.)

Engine oil:
Toyota Genuine Motor Oilº or equivalent
Oil grade: API grade SL Energy- Conservingº or ILSAC multigrade engine oil.
Recommended oil viscosity: SAE 5W-30
Oil capacity:
Drain and refill with filter 6.2 L (6.5 qt., 5.5 lmp. qt.)
without filter 5.7 L (6.0 qt., 5.0 lmp. qt.)
See page 542 for detailed information.

Engine coolant:
Capacity: 12.9 L (13.6 qt., 11.4 lmp. qt.)
Coolant type Ð Toyota Super Long Life Coolantº 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.)
Do not use plain water alone.
For checking the engine coolant, see page 547.

Automatic transmission:
Fluid type Ð Toyota Genuine ATF WSº
See page 553 for detailed information.

Tire information:
See pages 559 through 582 for detailed information.

Tire inflation pressure:
Tire size: P265/65R17 110S
Tire inflation pressure: 220kPa (2.2 kgf/cm
2 or bar, 32 psi)