2002 Lexus GS 430 User Guide 1 - Page 104

E X P L A N AT I O N M A I N T E N A N C E OF MAINTENANCE ITEMS Road Test Tire Rotation While 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 Plugs Tires should be rotated according to the instructions in your Owner's Manual. When rotating tires, check for damage and uneven wear. Transmission Fluid Install new plugs of the same type as originally equipped. A qualified technician should perform this operation. Steering Linkage and Boots Check for correct fluid level and inspect each transmission component for signs of leakage. If you discover any leakage, have it repaired by a qualified technician immediately. With 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 Replace every 90,000 miles or 72 months. A qualified technician should perform this operation. 104 M a i n t e n a n c e L o g s