A person can replace the battery of the key fob by following the steps: Disconnecting the key fob attached to the electrical system ﻿ Removing the four screws from the key fob ﻿ Removing the battery to replace the battery of the key fob ﻿ Reinstalling the screws and cover of the key fob ﻿ Connecting and testing the key fob function by connecting it with the electrical system