Tl*the contact owns a 2010 subaru legacy. while in reverse and attempting to park, the vehicle rolled down a hill and crashed into an embankment. the brakes had not engaged when applied. the failure was the second occurrence of the brakes not working. the vehicle was taken to an authorized dealership but the dealer could not diagnose the failure. the vin was unavailable at the time of the complaint. the current and failure mileages were approximately 2,000.