< I HAVE JUST HAD THIS SIGN COME ON AFTER I RAN OUT OF DIESEL(COMPUTER SAID 50MILES LEFT AND WARNING OF LOW FUEL LEVEL HAD NOT LONG BEEN ON) . I HAD THE PARTICULATE FILTER CHANGED LESS THAN 1500MLS AGO AT THE DEALERSHIP C5 HAS ONLY DONE 77000MLS AND WARNINGS SEEM TO APPEAR AND DISSAPPEAR ALL THE TIME.