It is often extremely difficult to return stolen audio units which have been seized by the police to their owners.
Therefore, many Ford audio units offer the option of, for example, entering a vehicle identification number into the unit.
For Ford audio systems, the abbreviation VID is used to refer to the Vehicle Identification Number.
The VIN (chassis number) or, for instance, the number plate number can be entered and this fulfills the security function.
The VIN is programmed ex works. If the unit is replaced, the VIN is automatically transferred by the diagnostics system during configuration.
Self-check routine - vehicles with standard audio system
The audio unit must be in radio mode before entering the Self-Diagnostic Mode.
To enter the audio unit Self-Diagnostic Mode, switch the audio unit ON. Press pre-set buttons 3 and 6 simultaneously and then release them again.