steering Lexus GS300 2006 Scheduled Maintenance Guide

Scheduled Maintenance Log
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The following descriptions are provided to give you a
better understanding of the maintenance services that
should be performed on your vehicle. The scheduled
maintenance log indicates at which time/mileage
intervals each service should be performed. Please note
that many maintenance services should be performed
only by a qualified technician.
Air Conditioner FilterRefer to your Owner’s Manualfor service details.Axle Shaft BootsAt driven wheels, check the axle shaft boots and
clamps for cracks, deterioration and damage. Replace
any damaged parts and, if necessary, repack the grease.
Re-torque the axle shaft flange bolts at the indicated
intervals. A qualified technician should perform these
operations.Ball Joints and Dust CoversCheck the suspension and steering linkage ball joints
for looseness and damage. Check all dust covers for
deterioration and damage. A qualified technician
should perform these inspections.Body InspectionVisually check for corrosion, scratches and other
damage. Check outer body panels, inner panels of the
hood and doors, and underneath the vehicle. Apply
touch-up paint to any chips and scratches or have
them repaired by a qualified technician. For further information on maintenance
services that you can perform yourself, see the
“Service Procedures and Specifications” section
of your Owner’s Manual. MAINTENANCE

Scheduled Maintenance Log
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67
Rack and Pinion AssemblyInspect the rack and pinion assembly for signs of leak-
age, damage and loose electrical connections. Tighten
connections and if you discover any leakage or dam-
age, have it repaired immediately by a qualified tech-
nician.Road TestWhile driving the vehicle, check for proper operation
of engine, transmission, brakes and steering. Also
check for abnormal noise or vibration from any part
of the vehicle.Spark PlugsInstall new plugs of the same type as originally
equipped. Refer to your Owner’s Manual. A qualified
technician should perform this operation.Steering Linkage and BootsWith the vehicle stopped, check for excessive freeplay
in the steering wheel. Inspect the linkage for bending
and damage and the dust boots for deterioration, cracks and damage. Replace any damaged parts. A
qualified technician should perform these operations.
Timing Belt (except GS 300 and IS)Replace every 90,000 miles or 108 months. A qualified
technician should perform this operation. (The GS 300
and IS are equipped with a timing chain, which
requires no periodic inspection.)Tire RotationTires should be rotated according to the instructions
in your Owner’s Manual. When rotating tires, check
pressure and check for damage and uneven wear. If
the spare is not rotated, check the condition and pres-
sure of the spare.Transfer Case Fluid (GS 300 All-Wheel Drive,
IS 250 All-Wheel Drive)Periodic fluid checks and replacement of the transfer
case fluid are not required. Any repairs that require
adding or replacing fluid should be performed by a
qualified technician following procedures in Lexus
service and repair publications.MAINTENANCE

Scheduled Maintenance Log
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68Transmission Fluid
Check for correct fluid level and inspect each trans-
mission component for signs of leakage. If you dis-
cover any leakage, have it repaired by a qualified
technician immediately.
Note: On the LS 430, GS and IS, the transmission
and transmission fluid are a completely sealed unit.
Therefore, periodic checks and replacement of the
transmission fluid are not required, and there is no
dipstick on the transmission on these vehicles. Any
repairs that require adding or replacing fluid should
be performed by a qualified technician following pro-
cedures in Lexus service and repair publications.Variable Gear Ratio Steering Assembly (GS 430)Inspect the variable gear ratio steering assembly for
damage and loose electrical connections. Tighten
connections and if you discover any damage, have
it repaired immediately by a qualified technician. MAINTENANCE