How do I turn off the digital mileage ligth on my Ford Feista?

I have a Ford Feista Style 06, on the dash board there is a lite up green square witch shows the mileage and for some reason every time I turn off the ignition the light stays on. Should it do this?How do I turn off the digital mileage ligth on my Ford Feista?Yes this normal for your car to do this

the light can stay on for up to 30 mins but it will go outHow do I turn off the digital mileage ligth on my Ford Feista?not as far as I am aware though it may? stay on for a two minute period after turning off ignition. next time you go for a service get it checked out.How do I turn off the digital mileage ligth on my Ford Feista?Thats normal. It will switch off after a couple of minutes. My vauxhall Corsa does the same thing.How do I turn off the digital mileage ligth on my Ford Feista?
got the same car, mine does the same , there supposed too