Method and control unit for transferring information to and/or from a vehicle

A method and control unit for transferring information to and/or from a vehicle are presented, the vehicle (100) including:- at least one vehicle internal system;- at least one add-on system arranged in the vehicle after the vehicle is produced by a manufacturer; and- at least one internal communication unit arranged for communication with at least one vehicle external communication unit. The method includes:- configuring an add-on interface of the vehicle by defining at least a relationship between a first information format used by the at least one internal communication unit and a second information format used by one or more of the at least one vehicle internal system and the at least one add-on system;- converting, by usage of the configured add-on interface, information between the first information format and the second information format; and- transferring the information to and/or from the vehicle, by usage of the at least one internal communication unit, the at least one vehicle external communication unit, and the first information format