There is a well known problem with some 03 Focus instrument clusters, known as the 'Watch Dog' problem as it was featured on BBC Watch Dog programme in April 2008. It is associated with printed circuit board corrosion. I had the same problem which also caused random failure of speedo, rev counter, temp gauge and engine warning light. Ford main dealer will charge £35+VAT for diagnostic check and if confirmed to be the 'Watch Dog' problem they will fit a new cluster for £99. Beware that the £99 is all you should pay including VAT and the cost of the diagnosic check. My dealer tried to charge me £99+VAT on top of the £35+VAT, but after a long argument they settled at £99 all in. Visit the BBC Watch Dog web page for more details and a very useful Ford UK help line number. Good Luck.