How do you release the auto tensioner on a serpentine belt for a 2003 Acura MDX?

To release the auto tensioner on a serpentine belt for a 2003 Acura MDX, use a socket wrench to turn the tensioner pulley counterclockwise. This will relieve tension on the belt, allowing you to slide it off the pulleys. Once the belt is removed, you can slowly release the tensioner back to its original position. Always ensure you have the correct tools and follow safety precautions when working on your vehicle.