Hello Vassilis,

It was indeed a wierd issue. I was in Florida with nice temperatures. The E83 NAV worked well the whole trip until the morning I was departing Florida to head back to Illinois. I also have a CarPC. I started the vehicle. The NAV screen did not flip up. I moved it up manually but there was no display. I pulled the two fuses and put them back. The NAV display came back up. My CarPC did not and I had to reset when I got home. Other than than the E83 drove well thru the mountains on a 2400 mile trip.

PeteC

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E83 - Aero PKG Mods installed: Homelink mirror. CIS-IBUS video module, AUX, Rr Dr Release, stock wheels, Remote start, CarPC (Atom) & mud flaps - NAV - MKIV - NA Map DVD - 2011
E46 - 18.5 wheels/tires (summer), 17 stock (winter), Homelink, NAV software upgrade, BMW video module, Radio to V53, AUX, USB IBUS interface,BMW alarm install, CarPC(Epia), remote starter, tank battery & angel eyes. NAV - MKIII - NA Map CD - High Version 2008.1