Hey Ron,
Thanks for the reply and suggestions.
It doesn't display a splash screen or anything. The button backlight stays on white, the screen lights black, then goes dark, then lights, then dark.
I'll look around more for testmode, but all I've seen thus far is the sticky saying the Z series doesn't have one. When I get home tonight, I'll also try to do the FW update.
My car has push button start and push button ACC mode. I said before that the battery was fine (for brevity). I normally have no problem with the battery, but I'd inadvertently left the map light on the night bef