I thought that might be the case...

 

I have a 2012 XLT, and I ordered two new keys with the remote start button, and the remote start antenna. I plugged in the antenna and mounted it behind the glove box, then got my new keys cut for free at the local hardware store, programmed them myself, (I had two existing keys) then used forscan to enable remote start, and now I have 4 keys and factory remote start! Check to see if your truck has the plunger under the hood, that’s how you’ll know it’s already equipped with everything else.