VEHICLE SECURITY ARRANGEMENT

摘要

This invention relates to a security arrangement for a motor vehicle having a vehicle management system and an on board diagnostics port to permit the external interrogation of the management system. The security arrangement comprises a blocker having an electrical line, a switch and a controller to control the position of the switch, the switch having a closed position in which the electrical line is complete and an open position in which the electrical line is incomplete. The controller has a record of an identifier and is configured to close the switch when the identifier is communicated to the controller. The identifier can be communicated to the controller by way of data-input means, or by the fitment of a removable adaptor.