I just got my 2016 Grand Coupe, and the rear trunk does not operate properly. In fact when you use both the rear release or in car release buttons, the trunk opens a couple of inches and then stops. It will not allow manual lifting either, as if its stuck. I am able to push it down and the automation starts again to close the trunk properly.

I have appt to take the car in this week, but wanted to post in case anyone else is having this issue with the trunk.