Key Programming Car Keys Most Brick and mortar locksmiths and dealership parts departments have tools to help you program replacement keys or restore immobilizer information. These tools are usually bidirectional OBD-II devices. Insert a blank, new key and turn the ignition to the "on" position without actually starting the car. https://www.g28carkeys.co.uk/citroen-car-key-replacements-near-me/