Hello, the light on the instuments with a spanner through it is a secondary engine management light showing an emissons related problem, it should be in the hand book. It means that there is a problem with engines management system. poss. a faulty sensor. You may find that the engine will not rev over 4.500 r.p.m. and perform poorly when the light is on. This means the engine management has gone into what they call limp home mode. It's a mode to prevent any permanant engine damage. The loacal dealer is the best option to read off that code causing the light to come on and prevent you spending money on an incorrect diag. sorry!
Peter O'Toole, December 2004