Hi im havin issue with the screen on my dash where the clocks are.....you can change what appears on the screen by pressing a button and thats whats not workin...but whats strange if i preas a different button it brings up what the icons mean on the same screen....i dont understand whats happened. Why is it showing me one lot of info but not showing the other its just a black screen...the top half is ok its the bigger area.

I have Audi A3 Quattro 1.8 TI 2000

Thanks in advance.