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yesterday, I drove the car to get it hand washed. the nav screen was completely out. no display of nav, radio, clock. when I got in the car to go back home, it was working again. we had low temperatures of 14-15 the two nights before. is this another electrical gremlin, or could the cold affect it.
Had the same problem. Everything works but no screen, touch screen works if you know where to touch-- but blank. module replaced under warranty-- no hassles
Temps down in the 20's in our garage, 2009 Nav screen stays black (or at least too dark to read) for a couple of minutes after startup, then looks normal.
Mine will do this even without the cold. just random times, nothing on the screen, touch doesnt work, nothing..blank. Turn off ignition, restart, and its back.