Mr. wizard how you holding up? I have a similar post on here where the lights were coming on and traction control got weird. I went to the dealer several times and they were stumped.. I was messing with a wire for my inverter and blew a fuse on a line that went from the battery to the inverter. I replaced the fuse and now it all works fine. No idea how or why. This wire was only to power the inverter. Now it works.