Hi everyone,
My 2009 Uplander LT started having problems with the compass display. The display shows two dashes -- and the directions do not change. Sometimes the display shows -- or N (North), but the directions do not change. I have tried to re-calibrate the compass and it will work correctly for a short while. After I restart the van, the compass will show the N (north) sign most of the time or the -- (two dashes).

Does anyone know why the compass is resetting itself and showing the two dashes (--)?

Thanks.