My key fob quit working so I bought 2 on EBay. The seller said they were new from a dealership and sold the cars to an agency that didn't want the fobs. I looked on youtube and was told how to program them. Hold the unlock button,cycle the ignition key twice fast and hold the lock and unlock buttons on the fob until the door locks lock and unlock. I did that yesterday and they worked. Today went to get in the truck and it wouldn't lock or unlock. So I went to get the second fob I programed and it wouldn't either. I went through the steps again and it programed and works . Do I need to do something different