I have an 01 Z and every once in a while when i try to close the trunk it doesn't want to latch. Some times it takes two or three tries before it latches. I notice that when i hit the trunk release button it sounds like the lock almost resets itself normally and then i know i will be able to close it. But when i don't hear that noise i know it's going to give me problems. So i don't know if it's electrical or the locking mechanism itself or what.