Sometimes [I would say rarely] when I start my ex via the remote start option on the key fob, I hear a hissing sound. It sounds like a tea pot kind of.... It goes away after about a minute. I heard somewhere that it could be a leak in the EVAP system? I also read that this type of leak should trigger a check engine light to turn on? I'm going to bring it up to my dealer during my next service but I just want to know if anyone else is experiencing the same thing. It doesn't really seem to effect the performance of my ex at all. The sound is just odd.