I have a 2013 Dodge Avenger SXT and the rear defrost is not working. The push button illuminates when pushed and stays illuminated for approx 10 minutes but the window does not defrost. I have checked for continuity across the grid lines and they are all good but there is no power reaching the window. We have swapped out the switch with a replacement but still no change. This vehicle does not have a fuse or relay in the power distribution box under the hood, I think it receives power directly from the TIPM. Does anyone have a repair manual with wiring diagrams? Has anyone had this problem and were able to resolve it?