That what it sounds like.I noticed yesterday that the top several inches of my rear window were not defrosting. There are wires in the glass, but the dew remained with a very clear delineation around the third or fourth wire trace. I am wondering if there is an electrical issue with that part of the heat trace
Has anyone else witnessed this?
Maybe take photos and show them to the service department to get it fixed under warranty.
A long, long time ago, I had to remove the tint from my car windows when I moved to a different state. Apparently, I pulled or scraped away some of the conductive wire. Since the car was way out of warranty, I found some electric glue. This glue electrically reconnected the wire strand across the back window. The strand had a gap. Once filled, the strand worked once again.
I would have the dealer fix it at this point.