We recently bought a 2014 Explorer Sport and if the climate system is off, every now and then we hear a rush of air coming from somewhere on the drivers side of the vehicle. We haven't been able to pinpoint it but my wife describes it as sounding like the ocean. It's really a quick rush of air that you can hear but don't feel and it seems to happen at random times. It doesn't happen when the climate system is on but that may be because the air is already going at that point. Sorry for not having a better description but I figured I'd try here and see where it led. Thanks