I am having a similar issue. I completely lose 12v power intermittently. No power at all, like the battery is disconnected. The next day, it's back to normal. After the second time, I took it to the dealership. I also had a POA92, which turned out to be a disconnected rear battery cooling fan. I had a new battery installed when I purchased it. The dealer said it was all fixed, reprogrammed, and ready to go. When I went to pick it up, it was dead again. Still there a week later. They did a draw test and there is no draw at all. Has anyone had a similar experience?