How do you change the key battery in a 2001 Ford Escape?

To change the key battery in a 2001 Ford Escape, start by using a small flathead screwdriver to carefully pry open the key fob. Once opened, remove the old battery, typically a CR2032, and replace it with a new one, ensuring the positive side is facing up. Finally, snap the fob back together securely. Test the key to ensure it works properly.