Spencer23

So I was driving down the highway today and I set my cruise/speed control just like I always do. Maybe after like 10-15 minutes down the highway, my instant mileage reading came on. At first, it was just showing my mpg like the average of it. Then, like I said it instantly just switched over to instant mileage reading where it would go down if I stepped on the gas and would go back up if I started coasting or pressed the brake. I didn't press any buttons or anything. I have no idea how to change it back either. I tried looking in the owners manual and I couldn't find anything either. I have a 2007 Ford Fusion SE.