| Model | Starting S/N | Ending S/N |
| 2004 MAZDA3 | 00000000 | ZZZZZZZZ |
Some vehicles may show bars on the right side of the audio display.
This area should be blank with no bars displayed.
Disconnect the 15A room fuse in the under hood fuse box in slot F31
Wait 2 minutes and reconnect. This resets the audio unit.