Not the screen, the connector in the Nav unit that the ribbon cable is plugged into. It requires that you remove the Nav unit from the dash, and then the ribbon cable can be seen coming from the screen and going into the top of the Nav unit. You simply open the connector clamp and remove the cable, clean the connector contacts and the conductors on the end of the ribbon cable and reinsert into the connector. Close the clamp and all should be good then. You do not need to remove the screen at all. Use Deoxit which also comes with a preservative. That should help keep a good connection for a long time.
2007 3.0si w/Sport Pkg, Navi, Leather, Strut brace, garage door opener and delete airbag warnings on sun visors