The contact owns a 2019 Honda Pilot. The contact stated that he had stopped the vehicle and had depressed the brake pedal. The contact stated that he opened the driver's side door and as he stepped out with his left leg, the vehicle started to move forward, and the engine was still running. The contact stated that the vehicle had a safety feature that automatically placed the vehicle into park (P) when the driver depressed the brake pedal and opened the driver's side door. The contact stated that as he exited the vehicle, it started to roll; he had parked on a slope with the hood of the vehicle aimed downhill. The contact stated that the driver's side rear tire ran over both his legs below his knees. The vehicle rolled downhill into a ravine and was not damaged. The contact stated that he called the police, who arrived and asked if he needed medical attention. The contact stated that no report was issued. The contact declined and later drove himself to a hospital emergency room. The contact stated that he was x-rayed and examined and only had abrasions and bruises. The contact drove the vehicle to a local dealer. The dealer diagnosed the vehicle and determined it had low battery power and had contacted the manufacturer for further guidance. The contact stated that the vehicle had a 9-speed automatic transmission that used a push button. The vehicle was not repaired. The manufacturer was informed of the failure. The failure mileage was approximately 71,000.