shut

I own a 2015 J.K. when I shut my jeep off it takes a few minutes but I hear the internal dampers in ductwork opening and closing ? I am not sure how long this keeps happening, but I dont like idea that it is draining my battery life when shut down. Does anyone have any idea what is going on...

Hello all...name is Jeff...I have been working on repairing/replacing things on my 1994 YJ in my garage for about 4-5 years...literally has been off the road on jack stands and garaged. I am really close now and have run into an issue. Hope you can help. One of those repairs was a leaking gas...