Tl*the contact owns a 2010 lincoln navigator. while the vehicle was parked on an incline, and in the park position with the emergency brake engaged, the vehicle rolled forward. the keys were not in the ignition when the vehicle crashed into a tractor with a snow blade attached, that was being used by the contact. there were no injuries. a police report was not filed. the contact stated that the snow blade stopped the vehicle. there was front end damage to the vehicle. the vehicle was checked by the dealer and they were unable to duplicate the failure. the vehicle had not been repaired but he received an estimate of $1,611.88 from the dealer to repair it. the failure and current mileages were 27,371. updated 03/08/11 *bf updated 12/19/11 *cn