rsinghpal

Hi, I just bought 2011 Ford Edge SEL. It came with 3 key fobs. One key have a 2x button on it and it's not working the other two works fine. I guess it is for remote starter but the key fob is not working. I changed the battery still nothing. How do I check if it's got remote starter or not and how do I program that key to work. I need to check if there is remote starter or not but how.?? So two questions are: How do I program the key How to check if remote starter is installed.