Gas Recirculation Valve (egr Valve) problems of the 2006 BMW X3

As I drove home from a long flight home after the holidays, the engine caught fire due to a frozen crank case ventilation system which caused oil to spray out in the engine compartment. I pulled over when I noticed smoke in the passenger compartment and smoke coming out of the hood. I was able to blow out the fire. Temperatures were 5 degrees f that night. The dealer stated there was a "more robust crank case ventilation system" that they would install at my cost. After the week long repair, the dealer brought my car to the front and turned on the seat heaters. I drove about 5 miles before noting a pinching/painful sensation on my left upper thigh. I pulled over to find a burn mark on the leather seat and a burn on my left upper thigh. It appears to be due to a short in the seat heater.