2011 Toyota Sienna Warranty, Maitenance, Services Guide - Page 57

Explanation of Maintenance Items Spark Plugs Replace at specified intervals. Install new plugs of the same type as originally equipped. A qualified technician should perform this operation. Tire Rotation Tires should be rotated according to the instructions in the Owner's Manual. When rotating tires, check for damage and uneven wear. Replace if necessary. Steering Gear Box Inspect for signs of leakage. If you discover any leakage, have it repaired immediately by a qualified technician. Transfer Case Oil Inspect or replace at specified intervals. When performing inspections, check for signs of leakage. If you discover any leakage, have it repaired by a qualified technician immediately. Steering Linkage and Boots 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. MAINTENANCE 55 Maintenance Log