^ What he said. The trunk unlocks with the rest of the doors.
IE, press UNLOCK once, the driver's door unlocks
Press it again, the other 3 doors and the trunk unlock. Use the handle to open the trunk.
Don't know what you are looking for, but FYI, if you press UNLOCK twice and the trunk doesnt unlock, then the trunk safety is initated, and read the owners manual to disable it. Don't know it off the top of my head