If you're sure that the main battery and it's connections are good and you get nothing when pressing down on the stoveknob key with a good fob in range then it sure sounds like you have a stuck Kipass activation switch.
First try something easy. With the fob in range, press down on the stoveknob and let it snap back onto place by letting your finger slide off to the side. Do this a couple of times, maybe it'll jar the switch into operation.
If that doesn't do the trick then the next thing to try would be to unplug the gray connector under the black panel just to the left of the gas tank. If your Kipass switch is acting up then when you plug the gray connector back together you should see the same results as you do when you press down on the stoveknob, again, with the fob in range. See this thread for more info and what the gray connector looks like.
http://www.zggtr.org/index.php?topic=6976.msg82841#msg82841