I just lifted the van and i can hear it and smell it. It seems to be coming from the rear exhaust manifold. Does anyone know if this would be covered under warranty. I have 48k miles. I wonder if the manifold cracked from a prior repair that was done to the coolant hoses. The hoses were leaking really bad and sprayed all over that manifold. VW replaced those hoses under warranty about a year ago or so. My wife said that she has noticed the exhaust noise for a long time.