If you continue having issues and believe it's the start button, try cleaning it and adding dielectric grease on it. See my post here.Thanks will try a new battery in the fob.
Looks like approx 10 months ago I posted about the light being on my dash - it was intermittently at the time, but has been on constantly for at least 4+ months now. Car starts fine and no issues afaik. I am taking it to the dealer this week... to be continued.