My 2014 C-Max SEL has a strange running water sound occasionally which appears to be coming from the upper right passensger side windshield or upper right passenger front door area or A-Pillar? It happens only when raining but not always. It is very strange. I can't seem to make it do it by running a garden hose up in that area. I had a passenger that heard it the other day too and it wasn't really raining hard at all. It just occasionally happens. Anyone come across this? I'm quite mechanically inclinded and I can't see any obvious reason for this. I don't see a point in taking it to the dealer if I can't replicate the problem.