It can be settings or hardware issues.
After making sure the "car type" and "baud rate" settings are correct, try following settings:
- "Reverse from OBD", or "Soft reverse" try "On" or "Off". These settings can be in advanced settings, or factory settings.
- "USB 360" try "On" or "Off". This settings should be in advanced settings.
It can be following hardware issues:
- Canbus decoder box is defective.
- Wiring is incorrect or defective.
- Electronics inside the radio brain is defective.