| Poor AM or FM radio reception or interference |  | 
|  |  |  
|  | Aftermarket FM modulator |  
|  | Loose antenna mounting nut |  | 
| Audio unit will not turn on (No information display and no sound) |  |  | 
| No sound is heard from all the speakers (display is normal) |  | Aftermarket amplifier or speakers | 
| Audio system sound is weak or distorted (display is normal) |  | 
|  | Fader and balance positions |  
|  | Disc recording level |  
|  | Aftermarket amplifier or speakers |  | 
| Auxiliary input sound is low or cannot be heard |  | 
|  | Auxiliary stereo cables compatibility |  
|  | Auxiliary accessory volume |  | 
| Radio preset memory is lost |  | Internal error | 
| Audio unit button does not work |  | Check the connector for poor connections or loose terminals between the audio unit and the audio panel | 
| Audio disc does not load |  | 
|  |  |  
|  | Damaged disc (scratches, fingerprints, marks, and distorted) |  
|  | Track/File format not supported |  | 
| Audio disc does not eject |  | 
|  |  |  
|  | Damaged disc (distorted) |  
|  | Disc with a label |  | 
| Audio disc does not play |  | 
|  |  |  
|  | Damaged disc (scratches, fingerprints, and marks) |  | 
| Audio disc skips |  | 
|  | Damaged disc (scratches, fingerprints, and marks) |  
|  | Tire pressure (over-inflated), disc smudged, or scratched |  | 
| Audio remote switch does not work properly (audio unit buttons work) |  |  | 
| USB device does not function |  | 
|  |  |  
|  | USB device compatibility (see the Owner's Manual) |  | 
| Bluetooth audio does not work |  | Bluetooth phone compatibility (see the Owner's Manual) | 
| Audio unit button illumination does not work |  |  | 
| Display does not dim or brighten with dimmer |  |  |