US Patent 11663857 Method and control unit for communicating with a vehicle

Disclosed are methods and control systems for communicating with a vehicle, where the vehicle comprises: a vehicle internal system; an add-on system arranged in the vehicle after manufacture of the vehicle; and an internal communication unit configured for communication with a vehicle external communication unit. The method comprises: configuring an add-on interface, the add-on interface being arranged in said vehicle as an interface between the vehicle internal system and the add-on system, by defining: at least one function of the add-on interface; and at least a signaling format to be used by the internal communication unit for the communication with the vehicle external communication unit; creating an immutable and unique identifier ID related to the configuration of the add-on interface; and communicating, using the internal communication unit and the immutable and unique identifier ID, with the vehicle external communication unit.