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It sounds like you have a bad navigation computer. The blue plug is the main plug with the power, I-Bus, signals to the display, etc. If the whole I-Bus goes down, and removing the nav computer solves it, that is a pretty strong indicator. (That and the blank screen is a dead giveaway-- the nav computer is the thing that runs the display.)
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SOLD
2000 E38 750iL Highline Edition, Upgraded with the lastest 2006 X5 Electronics
MKIV Navigation, 16:9 Display, Bluetooth, TV/Video with Backup Camera, Sirius, and Aux Input
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03-19-2010, 01:18 PM
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