MY 2004 HONDA ACCORD HAD BEEN LEFT PARKED OVERNIGHT ON OUR DRIVEWAY. AT ABOUT 10:30 IN THE MORNING THE NEXT DAY,12/18/11, I GOT INTO THE CAR, AND WITH MY DOOR STILL WIDE OPEN AND THE CAR IN "PARK", I TURNED ON THE IGNITION AND STARTED THE MOTOR FOR A 2 OR 3 MINUTE WARM-UP. I WAS ON THE DRIVER SEAT AND MY WIFE ON THE PASSENGER SEAT WITH HER DOOR ALSO WIDE OPEN. I WAS TALKING TO MY WIFE WITH MY FACE TURNED TOWARDS HER WHILE THE CAR WARMED UP. AFTER ABOUT TWO MINUTES, I TURNED OFF THE MOTOR AND PULLED OUT THE KEY FROM THE IGNITION SWITCH TO HAND IT TO MY WIFE STILL FACING HER WITH MY LEFT SIDE TOWARDS THE STEERING WHEEL. OUR HOUSE KEY AND THE CAR KEY WERE ON THE SAME KEY CHAIN AND I WAS HANDING IT TO MY WIFE TO LOCK THE FRONT DOOR OF THE HOUSE. RIGHT AT THAT MOMENT, THE DRIVER SIDE AIRBAG VIOLENTLY EXPLODED WITH FULL FORCE AND WITH A VERY LOUD BANG WHIPPING MY FACE AND MY LEFT EAR. WHATEVER I HAD IN MY HANDS (MY WALLET, A CD AND THE CAR KEYS) WERE ALL BLOWN AWAY AND LANDED OUTSIDE THE CAR AND I WAS COMPLETELY DEAFENED AND DISORIENTED BY THE BLOW AND THE LOUD EXPLOSION. FOR THE NEXT TWO HOURS OR SO, I WAS HURTING IN MY LEFT EAR AND WAS UNABLE TO HEAR ANYTHING WITH THAT EAR. ITS BEEN MORE THAN 24 HOURS SINCE THAT INCIDENT AND MY EAR THOUGH NOT HURTING AS MUCH, STILL HAS SOME RINGING. I REPORTED THE INCIDENT TO THE AMERICAN HONDA MOTOR COMPANY BUT AM VERY DISAPPOINTED WITH THEIR HANDLING OF THIS SITUATION. THEY WANT ME TO HAVE THE CAR TOWED TO A DEALERSHIP AND HAVE IT CHECKED