The contact owns a 2011 FORD Expedition. The contact stated that while driving, there was a burning odor coming from the vehicle. The contact stated at the time she did not see any smoke coming from her vehicle, so she assumed it was the outside. The contact stated that once she parked her vehicle, she sat inside the vehicle for approximately one hour before she exited the vehicle. The contact stated that when she came back to her vehicle, it was filled with smoke. The contact stated that the wires from the rear, middle row, passengers seat, on the driver's side of the vehicle had been burning. The contact stated that it did not cause a fire, however, it did melt the foam inside the seat. The contact stated the wires inside the seat were also melted. The dealer nor the manufacturer were notified of the failure. The failure mileage was 177,000