SIDE AIRBAG ON DRIVER'S SIDE (LOCATED IN OUTSIDE EDGE OF DRIVER'S SEAT) DEPLOYED WHILE THE CAR WAS PARKED AND RUNNING. THIS WAS CLEARLY A MALFUNCTION -- THERE WAS NO EXTERNAL EVENT OR DAMAGE THAT WOULD CAUSE AN AIRBAG TO DEPLOY. SIGNIFICANT BRUISING TO DRIVER'S LEFT ARM, TEMPORARY HEARING LOSS; DID NOT REQUIRE MEDICAL ATTENTION. *TR