The passanger side power mirror does not heat/defrost. Otherwise it works fine and I can change its position. The driver side works just fine. Any on what is wrong? If it were a fuse or wiring issue it wouldn't work work at all, right? I'm thinking it is the heating/resistance element. Any advice on fixing this would be appreciated. Since it otherwise works I'm not inclined to replace the whole mirror. -Atif '96 850 wagon 5sp