Navigation System Symptom Troubleshooting

Symptom | Diagnostic procedure | Also check for
--- | --- | ---
No picture is shown on the display | Troubleshooting |
The picture is missing a Red, Green or Blue color or tone | Troubleshooting |
Display unit buttons do not work | Troubleshooting |
Satellite mark in the GPS mark is not indicated | Troubleshooting | Electronic aftermarket accessories
Audio driving instructions cannot be heard | Troubleshooting | Vehicle position wanders on the map
Vehicle position wanders on the map | Troubleshooting | Satellite mark in the GPS mark is not indicated