Navigation System Symptom Troubleshooting - DVD screen error messages

DVD screen error messages
Diagnostic Test: Car Status
NOTE:
  1. Check the DVD-ROM reading surface for scratches and finger prints.
Are there any scratches or finger prints on the DVD-ROM reading surface?
YES -
NO -
If the problem occurs occasionally when the system is cold, this is normal. If the problem occurs frequently when driving, replace the navigation unit.