## Navigation System Symptom Troubleshooting

Symptom | Diagnostic procedure | Also check for
--- | --- | ---
No picture is shown on the display | Troubleshooting |
The picture is missing a color or tone | Troubleshooting |
AVN unit buttons do not work | Replace the AVN unit. |
Satellite mark in the GPS mark is not indicated | Troubleshooting | Electronic after market accessories
Audio driving instructions cannot be heard | Troubleshooting | Vehicle position does not move on the map
Vehicle position does not move on the map | Troubleshooting |