b4 you start playing with it mate take it to ford or a garage to get the work done as it will invalidate your warrenty if you touch it just had one come into my garage that a guy had changed a fiter on and a couple of other bits and it turned out that he's fuel pump was faulty on he's tdci focus have done all the work but ford wont cover it due to him touching it so now the guy has a bill for 2k.