I know this is an old thread, but posting here to help the next guy. I had the condensate drain issue, not a rain leak.
On my Ecoboost (but I suspect its the same for the hybrid, drain is in the exact same spot.) I was able to access the condensate drain without removing the heat shield or any...
Old thread I know, but I was trying to determine the thread pitch of the transmission drain plug so I could replace it with a magnetic one and was striking out. Google brought me here. I hope this helps the next guy.
According to the parts diagram here...