My SEL sedan has the exact same sound as you describe, but from the driver side of the car, around the visor and moonroof control area. Just like you, when I push on it the sound goes away...only to return later.
I had my dealer's service dept look at it, but they said there was nothing they could do about it. They say they called Ford and that there was no fix for this. "It's normal." What?! A rattling headliner on a $25,000 brand new car is normal?
If anybody else has this issue, and has a fix or dealer experience to share, please let us know. I'm tempted to drive to another dealer to see if they are willing to do something.
It's aggravating to hear my beautiful, new, car rattle like a Yugo! Love my car. Even with the MFT re-boots, I love my car. But this rattle will drive me to climb a clock tower if I can't make it go away.