As far as I know, the Grande uses the same dash as in my MiTo and should be able to display the range, mpg, etc permanently, I have average mpg on mine permanently.
What year is your Grande, and which engine?
Edit: Also, what does the range get replaced with? Can you upload a picture of your dash in it's default state?
All sorted thank you. The range is displayed by pressing the button on the right stalk. It remains on display until the car is turned off. When ita restarted it goes back to default which is the time and date
All sorted thank you. The range is displayed by pressing the button on the right stalk. It remains on display until the car is turned off. When ita restarted it goes back to default which is the time and date