Many of these 3.7s have ticks. There are literally thousands of posts about it. Look at the top of the v6 2011+ forum for the sticky thread about this issue. Lots of videos of it as well. Start there to see if yours is anything different, but they all sound the same to me. As others will tell you, it is normal and nothing but an annoyance. That being said, I am not a car doctor, so you may want a second opinion.
2011 V6 Kona Blue, MT, 3.55's, airaid cai, 93R tune, BBK shorty headers, 2.5" exhaust, GT axle-backs, BMR rear LCAs, pony package, comfort package