Yep, things like this happen. It's an easy fix, bring it in for warranty.
It could be as simple as a loose connection, or if its a bad switch they will order it and your gonna have to take back when the parts in.
If this is your first issue consider yourself lucky. My 09 had 15 warranty items over 3 years. So far my 13SRT has had only one.
Had a wheel bearing go bad last month so unfortunately not my first issue. I called and they ordered a switch for me. I've bought 3 brand new Dodges since '05. Had an '05 Ram, an '07 Ram and now a '13 Challenger. That's a total of about 180,000 miles and the wheel bearing and now switch are the only 2 problems Dodge has given me so I'm definitely not complaining.