FORD IS RECALLING CERTAIN MODEL YEAR 2007 FORD FIVE HUNDRED AND MERCURY MONTEGO VEHICLES MANUFACTURED FROM SEPTEMBER 5, 2006, THROUGH SEPTEMBER 11, 2006. THE FUEL TANKS MAY NOT HAVE CONSISTENT WELDS BETWEEN THE FUEL TANK AND FUEL FILLER NECK SPUD WHICH CAN AFFECT THE STRENGTH OF THE JOINT. SOME FUEL TANK SPUD WELDS MAY NOT PROVIDE THE EXPECTED STRENGTH IN THE EVENT OF A SEVERE REAR IMPACT TO THE VEHICLE. AN IMPROPER WELD CAN RESULT IN A CRACK IN THE JOINT WHICH COULD ILLUMINATE THE EMISSIONS MALFUNCTION INDICATOR LIGHT, CAUSE A FUEL ODOR, OR ALLOW FUEL TO LEAK OUT.