2014 MKS Collision Warning Lights

I recently bought a 2014 MKS Eco-boost. I notice that the collision warning lights go off randomly.I notice if I am in the right lane passing a cars on the left it goes off. Also sometimes when I go under a bridge or a road sign. I had it in to the service shop twice and they can't fix it. Does anyone else have had this problem?
Thanks in advance,
John

What are you referring to as collision warning lights? Are you referring to the yellow LED in the side mirrors? If so, that's for the Blind Spot Information System (BLIS) and should illuminate any time something sizeable is in or nearly in the driver's blind spot. It works for vehicles (including bicycles and motorcycles) as well as tall weeds close to the side of the road / lane.

-Rod