2005 Lexus GX470 spec

ENGINE
560To ensure excellent lubrication performance for your engine,
ªToyota Genuine Motor Oilº is available, which has been
specifically tested and approved for all Lexus engines.
Please contact your Lexus dealer for further details about
ªToyota Genuine Motor Oilº.
CHECKING THE ENGINE COOLANT
LEVEL

1Reservoir cap2ªFº (upper) line
3ªLº (lower) line
Look at the see±through coolant reservoir when the
engine is cold. The coolant level is satisfactory if it is
between the ªFº and ªLº lines on the reservoir. If the level
is low, add the coolant. (For the coolant type, see ªCoolant
type selectionº described below.)
The coolant level in the reservoir will vary with engine
temperature. However, if the level is on or below the ªLº line,
add coolant. Bring the level up to the ªFº line.

ENGINE
563
Lexus recommends ªToyota Super Long Life Coolantº, which
has been tested to ensure that it will not cause corrosion nor
result in m
alfunction of your engine coolant system with proper
usage. ªToyota Super Long Life Coolantº is formulated with
long±life hybrid organic acid technology and has been
specifically designed to avoid engine cooling system
malfunction on Lexus vehicles.
Please contact your Lexus dealer for further details.
CHECKING THE RADIATOR AND CONDENSER
If either of the above parts are extremely dirty or you are not
sure of their condition, take your vehicle to a Lexus dealer.
CAUTION
To prevent burning yourself, be careful not to touch the
radiator or condenser when the engine is hot.
NOTICE
To prevent damage to the radiator and condenser, do
not perform the work by yourself.

SECTION 6 ± 3
566
SERVICE PROCEDURES AND
SPECIFICATIONS
Chassis
Specifications567
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Checking brake fluid 571
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Checking power steering fluid 572
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Checking tire inflation pressure 574
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Tire information 578
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Types of tires 587
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Rotating tires 588
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Checking and replacing tires 589
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Installing snow tires and chains 591
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Replacing wheels 596
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Aluminum wheel precautions 597
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Suspension and chassis 597
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CHASSIS
567
SPECIFICATIONS
Ð DIFFERENTIALOil capacity Front
Rear
1.4 L (1.5 qt., 1.2 Imp. qt.)
3.1 L (3.3 qt., 2.7 Imp. qt.)
Oil typeHypoid gear oil API GL±5
Oil viscosityAbove ±18C (0F): SAE 90 or SAE 85W±90
Below ±18 C (0F): SAE 80W or SAE 80W±90
Ð TRANSFER
Oil capacity
1.4 L (1.5 qt., 1.2 Imp. qt.)
Oil typeHypoid gear oil API GL±5
Recommended oil viscositySAE 75W±90

CHASSIS
568Ð AUTOMATIC TRANSMISSION
Fluid capacity Drain and refill
Up to 3.0 L (3.2 qt., 2.6 Imp. qt.)
Fluid typeToyota Genuine ATF WS*
*: Change automatic transmission fluid only as necessary.
Generally, it is necessary to change automatic transmission
fluid only if your vehicle is driven under one of the Special
Operating Conditions listed in your ªOwner's Manual
Supplement/Scheduled Maintenanceº. When changing the
automatic transmission fluid, use only ªToyota Genuine ATF
WSº (ATF JWS3324 or NWS9638) to aid in assuring optimum
transmission performance.

CHASSIS
575
Always use a tire pressure gauge. The
appearance of a tire can be misleading. Besides,
tire inflation pressures that are even just a few
pounds off can degrade handling and ride.
 Do not bleed or reduce tire inflation pressure
after driving. It is normal for the tire inflation
pressure to be higher after driving.
 Never exceed the vehicle capacity weight.
Passengers and luggage weight should be located
so that the vehicle is balanced. Inspection and adjustment procedure

1Tire valve
2Tire pressure gauge
1. Remove the tire valve cap.
2. Press the tip of the tire pressure gauge to the tire
valve.
3. Read the pressure using the graduations of the
gauge.
4. In case the tire inflation pressure is not within the
prescribed range, insert the compressed air from the
valve. In case of applying too much air, press the
center of the valve and release the air to adjust.

CHASSIS
579
1Tire size: For details, see ªTire sizeº on page
580.
2DOT and Tire Identification Number (TIN): For
details, see ªDOT and Tire Identification Number
(TIN)º on page 580.
3Location of the tread wear indicators: For
details, see ªChecking and replacing tiresº on
page 589.
4Tire ply composition and materials: Plies mean
a layer of rubber±coated parallel cords. Cords
mean the strands forming the plies in the tire.
5Radial tires or bias±ply tires: A radial tire has
ªRADIALº on the sidewall. A tire not marked with
ªRADIALº is a bias±ply tire.
6ªTUBELESSº or ªTUBE TYPEº: A tubeless tire
does not have a tube inside the tire. A tube type
tire has a tube inside the tire and the tube
maintains the air pressure.
7Load limit at maximum cold tire inflation
pressure: For details, see ªChecking and
replacing tiresº on page 589.
8Maximum cold tire inflation pressure: This
means the pressure to which a tire may be
inflated. For details about recommended cold tire
inflation pressure, see ªSpecificationsº on page
567.
9Uniform tire quality grading: For details, see
ªUniform tire quality gradingº that follows.
10Summer tire or all season tire: An all season
tire has ªM+Sº on the sidewall. The tire not
marked with ªM+Sº is a summer tire. For details,
see ªTypes of tiresº on page 587.

CHASSIS
580
DOT and Tire Identification Number (TIN)

The illustration indicates typical DOT and TireIdentification Number (TIN).
1ªDOTº symbol
2Tire Identification Number (TIN)
3Tire manufacturer's identification mark
4Tire size code
5Manufacturer's optional tire type code
6Manufacturing week
7Manufacturing year
The ªDOTº symbol certifies that the tire conforms to
applicable Federal Motor Vehicle Safety Standards.
Tire size

The illustration indicates typical tire size.
1Tire use (P=Passenger car, T=Temporaryuse)
2Section width (in millimeters)
3Aspect ratio (tire height to section width)
4Tire construction code (R=Radial, D=Diagonal)
5Wheel diameter (in inches)
6Load index (2 digits or 3 digits)
7Speed symbol (alphabet with one letter)