I was told by my dealer that the C7 would give me a dash display when the battery in the key fob was getting low. Well, no such warning and I got caught. When I went out to run an errand the fob battery was dead. I used the handy key to open the back hatch and of course the security system went nuts -- wouldn't shut up until I started the car -- by inserting the fob into the little slot under the column. Just a heads up that if your fob battery is getting older, go ahead and change it before you get caught cold. By the way, changing the battery is another butt whipping'…you just gotta love technology.