[fatherof2]

I got one of the keyfobs off of ebay, had my dealer reprogram it (as mentioned above there is a rolling, expiring in 30 minutes code that only the dealer can get.) The way it was explained to me was that if you have the software you can program the key but only with this code and you gotta do it SOON after you get it. Its a quick job, I watched them do it and took 10 minutes...if that.
Long term review is that i use my original fob as my main one. The replacement fob, eats through batteries (rarely use it and have gone through two in one year (CR2032 btw)), the range is not as good, remote start does not always work, and the biggest issue is the RFID chip has limited range to where sometimes i need to open up the center consul and place the key to recognize the car. hope this helps

My dealer said they would program a FOB not sold by them, but there is only a 50% chance it will work. Since the one you purchased worked, would you mind sharing the eBay's seller name?