Ok this morning I opened the hatch on my 2012 ford focus and all of a sudden it started making this popping sounds almost like bubble wrap but a lot louder. it was going on for about 3 to 5 minutes.I couldn't figure out where the sound was coming from because it sounded like it was coming from every where in the car. The first thing I thought was the kids left a toy in the car, but could find one. Has anyone expierience a similar situation because I'm stumped on this one.