DTC B12D4-51: Rolling Code Synchronization - Not Programmed: Action

NOTE: Do NOT install a new Door module as this will NOT rectify the fault

Using the Jaguar Land Rover Approved Diagnostic Equipment, perform routine - Immobilization. Clear the DTCs and retest
Using the Jaguar Land Rover Approved Diagnostic Equipment, reconfigure all the door modules with the latest level software. Clear the DTCs and retest