Bimmerfest - BMW Forums - View Single Post - 745i navigation, radio, and sound system problem
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Old 01-26-2012, 09:11 PM
Has8223 Has8223 is offline
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Location: south africa
Join Date: Aug 2010
Posts: 102
Mein Auto: 745i
disconnect 1 module at a time and plug in most bus loop then switch on car. in other words, disconnect the gps, plug in most bus loop and test and so on. Have you plugged the car in to GT1 or DIS or launch system to test modules? Have you tried disconnecting the most bus loop and reconnecting? Have you checked battery voltage? Have you tried to do reset of all systems? go here for repair manuals:
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