How do I unlock my radio just got this car used and need to unlock the radio

A radio is only "locked" in this vehicle if it did not originally come with the vehicle. The system compares the VIN of the vehicle to the one in the radio. Alternatively, if there is a data communication issue between the radio and the vehicle, this could occur. The only solution is to utilize a diagnostic tool with the capability of communicating with the radio to attempt to resolve this issue.