2007 Toyota Sienna Serpentine Belt Diagram (2024)

FAQs

Where is the serpentine belt diagram? ›

Some vehicles have the serpentine belt diagram located on a decal somewhere in the engine compartment. But if your car does not have a decal, you can easily look up the diagram in a repair manual or repair database. Another option is to take a photo of the old belt before removal.

The average cost for a Toyota Sienna Serpentine Belt Replacement is between $94 and $114. Labor costs are estimated between $50 and $63 while parts are priced between $44 and $51.

The serpentine replacement interval is about every 60,000 – 100,000 miles. Because of their rubber material, serpentine belts will crack, peel, and wear down over time. To know if it's time to replace your serpentine belt, look for the following signs: Your air conditioning or power steering systems fail.

The 2007 Toyota Sienna 3.5L engine does NOT have a Timing Belt. It has a Timing "Chain". There is no service interval at which the Chain needs to be replaced as part of any normal service maintenance schedule.

A: Commonly a belt routing diagram sticker is on the underside of the hood or in the engine compartment. If there is no diagram, make a sketch of the belt and pulleys before removing the belt.

That is why it's so important to stay ahead on your car service and get your belt replaced before it completely breaks. Depending on your vehicle, and the other service you may or may not be having done at the time, the whole process of replacing the serpentine belt should take no more than two hours.

Replacing the serpentine belt is as simple as threading it into position, cranking the tensioner and slipping the belt over the tensioner pulley, or nearest pulley up top. Belt tensioners are mostly spring tension. Once installed, the spring retains pressure to the belt.

Engine Overheating

Overheating can cause severe engine damage, including warped cylinder heads, cracked engine blocks, and blown head gaskets. This is one of the most serious risks of driving with a broken serpentine belt - more on that later.

Depending on the vehicle and engine, the timing belt drives the water pump, too. If the belt fails, the pump might not be far behind. Because the timing belt has a similar service life expectancy compared to most water pumps, it's wise to replace them at the same time.

Your serpentine belt was made to last. Under ideal circ*mstances, a serpentine belt will last 60,000–100,000 miles. It's important to replace this belt as part of your vehicle's scheduled maintenance, even if it looks okay. You don't want this car part to break while you're on the road.

Does your car run better with a new serpentine belt? ›

Schedule an Appointment

Thanks to serpentine belts, your car can run more effectively and smoothly than in years past.

The 2007 Toyota Sienna lasts over 300,000 miles with only some oil line and door handle issues. At $6,110 to $9,527 it's expensive, but worth the money for one of the best vans. The V6 engine offers excellent power, there's more cargo space than other minivans and the seats are very comfortable.

If your vehicle is equipped with a timing chain rather than a timing belt, there is no prescribed replacement interval. If you have additional questions, please contact your local Toyota dealership to schedule an inspection appointment.

The average cost for serpentine belt replacement is between $109 and $134. Labor costs are estimated between $57 and $72, while parts range between $52 and $62. Whether you go to the mechanic or do it yourself, replacing a serpentine belt costs $58 to $126.

If you do notice your belt needs replacing, you can do it yourself if you're mechanically minded and have the time. It'll take about 1 or 2 hours, but they're relatively inexpensive and straightforward to repair.