Heat shield on the muffler system. I was towing a boat up north and started to smell a burning smell. At first I thought it was an electrical issue, but couldn't identify anything. So I drove another 3 to 4 miles and the back floor boards was smoking filling the car with smoke. I pulled over and the carpet was melting from the heat of the muffler/exhaust under the back seat. When it was inspected the heat shield was not over the area that almost caught fire. This is an issue that Jeep is more than aware of and it's an issue that only happens when these vehicles are towing. They run extremely hot towing and the heat shield is defective. Their are other's that have had this happen and there's no recall! My car is equipped with tow package too and it was turned on before it's even a question. I got a call about a year ago about a family friend was towing a pop up camper and their commander caught on fire and was a total loss! Thank God no one was injured. There needs to be an investigation with people who have commander's.