I noticed that both my rear defroster and heated mirrors had stopped working. The dealer repaired things but it turned out that it required a battery charging an then a reset of the ECU module. That's it. No new parts. Apparently something cause the ECU to interrupt power to a module through which power to both the heating for mirrors and the rear defroster work. Weird but also irritating because they could not tell me what could be doe to prevent this happening again. Anyone else had this happen?ANy ideas from those on the "inside".