The timing belt on a 2000 Toyota Sienna should be replaced every 90,000 miles or 7 years, whichever comes first. If the timing belt breaks, it can cause serious engine damage, so it is important to replace it according to the manufacturer's recommendations.
Checking the Timing Belt
You can check the timing belt for wear by removing the timing belt cover and inspecting the belt. If the belt is cracked, frayed, or has any other signs of damage, it should be replaced.
Replacing the Timing Belt
Replacing the timing belt is a complex procedure that should be performed by a qualified mechanic. If you are not comfortable performing the work yourself, it is best to have it done by a professional.
