TL* THE CONTACT OWNS A 2012 JEEP WRANGLER. THE CONTACT STATED THAT WHILE DRIVING APPROXIMATELY 35 MPH, AN UNUSUAL TICKING NOISE EMITTED FROM THE ENGINE WITH THE ILLUMINATION OF THE CHECK ENGINE WARNING INDICATOR. THE FAILURE OCCURRED UNTIL THE ENGINE WAS TURNED OFF. THE VEHICLE WAS TAKEN TO AN AUTHORIZED DEALER FOR DIAGNOSIS. THE TECHNICIAN STATED THAT THE FAILURE WAS CONTRIBUTED TO A FAULTY ENGINE HEAD AND VALVE. THE VEHICLE WAS NOT REPAIRED. THE MANUFACTURER WAS NOT NOTIFIED OF THE PROBLEM. THE APPROXIMATE FAILURE MILEAGE WAS 17,300.