Re: Merry Christmas! disable key fob trick...
You can skip the tin foil. When I went to the water park and just wanted to pin the key inside my suit, you just have to lock the fob in the car. After the 3rd time, the car lets you lock it inside (the first couple you lock the door, close and it will unlock/honk, repeat several more times and it will stay locked).
2011 Jeep Grand Cherokee Laredo 4X4