Ok so if you leave your keys in the car and get out and close the door, the car will beep at you and keep the door unlocked.
However, if the car is locked, and you happen to have your keys in your gym bag, and you open the hatch with the button above the license plate to put your bag in the back, don't close the hatch!
The car doesn't unlock and doesn't realize that the keys are in the trunk.
Luckily I had my cell phone in my hand at the time and called my roommate to bring me my extra key.
This really doesn't make sense, and seems like a flaw in the design. I guess the range that the doors respond to the key is less than the distance to the rear hatch. Couldn't they have just made the range the diameter of the car.
I did pretty much the same thing at the beach over the Memorial Day Weekend. The wife and I were standing at the rear of the Vette, hatch open, dusting the sand from our feet prior to getting in the car. I had laid the keys in the hatch area, and before I knew it, shut the hatch. No "three beeps", just me saying "I can't believe what I have done". We were 50 miles from home, daughter and son-in-law out of town. I was dreading having to call someone to our rescue, or worse yet, facing the prospect of a tow to the local dealer. We would still need to call someone from home to come get us, or pony-up for once expensive cab ride. Our On-Star was not active, and no dealerships open on a Sunday evening, much less a holiday weekend. I thought we were screwed.
I first called On-Star to pay whatever to activate the system and have them un-lock the car. Who knew this can't be done unless you are in the vehicle to push the "blue button". Called GM Roadside Assistance. They hooked me up with a towing service that specialized in exotics. The tow arrived within the amount of time promised. The driver asked what had happened, and verify my identity as the owner. Once done, he pulled out a bag that contained a small air bladder with a hand pump. He palced the air bladder between the glass and the targa bar, pumped it up enough to separate the glass from the weather strip. He then inserted a rod about the size of a pencil with a handle that rotated to help guide it through the opening created by the air bladder. He first went for the un-lock button. This did not work. Once again, I though I was screwed. I then asked him to try the button on the dash that opens the hatch. After about ten minutes of maneuvering, he hit the button, and the hatch opened. We were saved, and not a scratch anywhere on the car. We tipped the guy $20.00 and went on our merry way. For some reason I never hought to have him try the door release button on the passenger door. This would have been a much easier target than the hatch release.