Lennon said:
Check out this other thread I found about the same button. It might help you figure it out.
Yeah, that thread confirms it’s part of a KARR security system. If you didn’t pay for it, it’s probably deactivated.
Wait, they drilled into your dashboard without telling you? If you remove it, you’ll just have holes there. I’d definitely ask the dealership about this.
Not a factory button at all.
It’s for nitrous, obviously. 
From what I’ve read on forums, it’s a KARR security system. If you didn’t ask for it, go back to the dealer and have them disable or remove it.
Looks like the 'don’t screw yourself’ add-on.
Push it! See what happens! 
Mystery button detector. 
It’s for the ejector seat. Obviously.
I came here just for the ‘ejecto seato’ jokes.
That’s the Flux Capacitor button. Time travel ready!