I have the same issue with my 2015 3.5 Edge SEL.
calling_john_galt & Will W --- did you ever get this resolved? If so, how?
1004ron --- I notice approximately 3 months after doing some work on it.
Changed water pump, timing chain & guides and drained & filled transmission at about 110K miles (2 years ago). Now have 147K on it and it still does this intermittently.
Does anyone know what special tools are needed and any links to video so I can see what I am getting myself into?
Thanks!!!