I needed a new panic button on my otherwise working key, so I got a complete key from EBAY that was from a different vehicle but in like new condition for about $30 or so. The panic button can be pried off with a pin, it's just a rubber part that fits in a slot surrounding the mechanical switch opening. The new one just presses in place of the old one, and you're done... When the other buttons wear out I'll do the same thing.