On day 2 of ownership, I was showing off the car to my car-buff brother-in-law, so I opened the trunk for a look-see. I didn't slam it shut afterwards, so it didn't close all the way and the "yellow" on the rear of the car image in the dashboard, told me so. I first tried to press hard on the rear center of it, as suggested by my salesperson upon delivery. No go. I tried to open it again, using both the fob and interior switch. No go. Looking at this Forum, someone's solution was to press hard on the trunk, while pressing the fob key. Tried but no go. Then alternated between pushing down and lifting up...while pressing the fob. FINALLY, it opened. Then slammed it shut "to be sure" and it closed OK and the dashboard warning disappeared. Problem solved! (or so I thought)
Later same day (last night) and when parking at home, the yellow dashboard light reappeared, even though I'd not opened the trunk again. Checked and the trunk felt closed. Tried opening it again (fob and interior switch). No go. Tried alternating between pushing/pulling while using fob. No go.
THEN pried open the small interior panel behind the driver seat (left side of car), along the side wall. Fun task; it was very tight and hard to pull open on its right edge. Looked underneath for the "red pull loop" as shown in the booklet, for the manual trunk release. Couldn't see it, nor any other "loop". Asked my daughter to help, with her smaller hands and ability to reach in further and feel for the loop. She finally spotted it: it was BLACK and jammed against the right side (not in far) and one tug, easily opened the trunk.
Perhaps (?) I've got a defective latch? Everything working OK this morning.
The main point of this posting, is to let everyone know that it may not be a red loop (mine was black) and describe how I located mine, should that help others. Hopefully this won't be an issue for you.