How do you replace the serpentine belt on 2010 Nissan Quest?

To replace the serpentine belt on a 2010 Nissan Quest, first, ensure the engine is off and cool. Locate the belt routing diagram, usually found on a sticker under the hood, to understand how the belt is arranged. Use a socket wrench to relieve tension on the serpentine belt tensioner, then remove the old belt. Install the new belt by following the routing diagram, ensuring it is seated properly on all pulleys, and then restore tension by releasing the tensioner.