I have a 330ci convertible, and notice that the GPS symbol in the upper right of the screen goes away from time to time. When this happens the service menu tells me the gps status is searching. This problem seems to be becoming more frequent in the last few days. I lost GPS for over an hour today and the map had me positioned in the middle of the ocean for a while.

From reading on here I seem to think my GPS aerial is the problem. Based on the GPS retrofit instructions it looks like the aerial is behind the instrument cluster, but does anyone know for sure if this is the location when the Nav comes installed from the factory?