| 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 indieated |