Well, I made that error appear because… I’m an idiot.
That’s an error that can be displayed on a Toyota/Lexus MFD after changing the map region in a service menu.
I managed to select one that’s not for the disc I have. ?This setting stays in flash in the navigation unit, which has a battery backup. ?In order to ‘re-set’ the navigation unit, it must be dismantled and a board that has the battery must be disconnected.
My many thanks to htmlspinnr from priuschat who described the processes perfectly.
Pull NAV ECU:
Remove rear plastic cover by pulling plastic retaining clips/pins. I found two flathead screwdrivers helped with this. Remove …
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