DAIMLER TRUCKS (DTNA) HAS RECALLED CERTAIN MODEL YEAR 2011 AND 2012 FREIGHTLINER BUSINESS CLASS M2 AND WESTERN STAR 4900 EMERGENCY VEHICLES MANUFACTURED FROM JULY 2, 2010, THROUGH DECEMBER 13, 2011, EQUIPPED WITH A DD13 EPA10 DETROIT DIESEL ENGINE. THE ENGINE SHUTDOWN SOFTWARE NORMALLY PROVIDED TO PROTECT THE ENGINE AND VEHICLE MAY NOT HAVE BEEN DISABLED ON ENGINES INTENDED FOR EMERGENCY VEHICLE APPLICATIONS. IF THE VEHICLE OPERATOR RECEIVES AND IGNORES MULTIPLE WARNINGS INDICATING THE NEED FOR OPERATOR INTERVENTION, THE ENGINE MAY SHUT DOWN UNEXPECTEDLY. UNEXPECTED EMERGENCY VEHICLE ENGINE SHUTDOWN UNDER CERTAIN CONDITIONS COULD HAMPER RESCUE OPERATIONS AND PLACE THE PUBLIC AT RISK.