Only the top half of my information screen is illuminated , is this a common issue ? have pre owned warranty so all good on that front  .

You mean it looks like the below?

 

Only the top 1/2 is actually a screen. 

The black part below is just for warning lights.

 

Thanks for info I was wrong with regard to screen

You mean it looks like the below?

 

Only the top 1/2 is actually a screen. 

The black part below is just for warning lights.

 

Thanks for i info my last car at the full maxi dot screen had a senior moment.