Key Battery?
1. Is it the battery
2. If it is how do i replace/get it replaced
Without going to a dealer, pull out the metal key and right before the key comes all the way out, there is an edge where you can use the tip of the key to pry the end cap off of the key. Once it pops loose, pull it out by hand, and there will be two watch batteries. Get two more just like this and replace them.
I would suggest you save by putting in your own batteries instead of the dealer. Just being cheap here.

For pics on key battery replacement RTFM.







