About two weeks ago I dropped off my car at a detailer to get some work done while I was away on vacation. I told him to take the battery out of the key & lock it in the boot, thinking I could use Car Connect to unlock it on the way back home. Wrong. While you can lock the car via the app, you can't unlock it. Car Connect tech support apparently can't do it either. So I ended up making an hour+ round trip to go home, get the other key & retrieve the car. Not a huge big deal, but just be aware. I guess I should've tried it at home first, but I figured if there was a "lock" button, it would change to "unlock" when the car was locked. Nopes.