WHEN EXITING THE VEHICLE WITH THE ENGINE RUNNING AFTER PUTTING IT INTO PARK, THE VEHICLE SUDDENLY WENT INTO REVERSE. THE DOOR KNOCKED ME DOWN AS I WAS CAUGHT IN THE SHOULDER SEAT BELT AND DRAGGED ME APPROXIMATELY 15 FEET. AFTER BEING RELEASED, THE VEHICLE PROCEEDED TO CONTINUE IN REVERSE AND RAN INTO A STOREFRONT. I WAS THE ONLY ONE WITH MINOR INJURIES AS NO ONE ELSE WAS INVOLVED IN THE ACCIDENT. I HAVE HAD PROBLEMS IN THE PAST WITH THE ELECTRONIC GEAR SHIFT, SPECIFICALLY WHEN MOVING IT FROM DRIVE TO PARK. SOMETIMES IT SEEMS TO GET STUCK IN REVERSE EVEN THOUGH THE INDICATOR LIGHT IS SHOWING PARK.