Vehicle maintenance programs are generally recommended in intervals of mileage or time, or whichever one comes first. Toyota offers minimum suggestions for its Sienna mini-van maintenance program, which assumes the van is driven on a daily basis. However, performing vehicle checks and maintenance more often can keep your vehicle in peak condition, which will maximize the car's efficiency, performance and resale value.
Every 3,000 miles or 3 months
Toyota recommends checking the power steering fluid level and transmission fluid level as well as changing the engine oil and oil filter every 3,000 miles or 3 months, whichever comes first. The Sienna should also be checked for the proper engine coolant, brake fluid, and windshield washer fluid levels; as well as adequate tire pressure.
Every 6 months or 7,500 miles
At 6 months or 7,500 miles, Toyota recommends you inspect the wiper blades and all hoses under the hood as well as check the battery, engine drive belts, cooling system and front disc brake pads. The tires should also be checked for wear and tear as well as have them rotated. Finally, all maintenance activities from the 3 month or 3,000 mile point should also be performed during the 6 month or 7,500 mile time period.
Every 12 months or 15,000 miles
The Toyota maintenance program suggests that a series of additional checks should be performed annually or every 15,000 miles in conjunction with the 3,000 and 7,500 mile checks. Included in the 15,000 mile, or 12 month, maintenance is an inspection of the brake system, fuel system, suspension, steering components, drive axle boots, and exhaust system. The valve clearances on the Sienna should be adjusted and the air filter should be replaced. In addition, check the rear differential and transaxle lubricant levels.
Every 24 months or 30,000 miles
The 24 month or 30,000 mile maintenance includes replacement of the spark plugs and wires, fuel filter and, if needed, the distributor cap, PCV valve and rotor. The engine idle speed should also be checked and adjusted if necessary. Multiple fluids require changing, including the brake fluid, manual transaxle lubricant and transmission fluid. The interior ventilation filter on the Sienna should may also need changed. All of these items must be performed in addition to all prior maintenance milestone activities.
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