How do you replace the serpentine engine belt?

The first few serpentine belts you do will be a little difficult. Be careful, lots of rookies have lost fingertips and chipped teeth doing serpentine belts. After jacking the car up safely and safely using proper jack stands (DON'T EVER get under a car on a jack or on cinder blocks! Bad things happen to people who do that...) You'll need to remove the right side under-engine cover. Using the appropriate wrench, turn the tensioner against the spring to relieve tension on the belt (don't overdo it, tensioners can be damaged). Mind your fingers, remove the old belt and install the new one exactly as the old one came off. slowly allow the tensioner to return to position, making sure the belt is fully on the pulleys. i recommend you take the the car to a Toyota specialist to do this, often it's not worth the effort to learn this skill, but if you really want to, it's not really too hard to do with some experience and lots of care. Oh yeah, compare the old belt to the new one to be sure it's right. Here's a directory link for you to find a Toyota specialist: http://repairpal.com/toyota-repair-in-canton-michigan