Abstract: A printed circuit board (1) comprises a conductive outer layer (2) and at least one conductive inner layer (4, 14). At least one bus bar (7, 8) for conducting high current and at least one power semiconductor (12) for controlling and/or activating the high current are disposed on a side of the outer layer (2) facing away from the at least one inner layer (4, 14). The printed circuit board (1) allows for a high level of component density while simultaneously providing for effective heat dissipation. Furthermore, the printed circuit board (1) can be produced economically and flexibly.

Abstract: A method for checking a motor vehicle comprises steps for transmitting an ID stored in an electronic control device of a transmission of the motor vehicle, to a central facility, the comparison on the part of the central facility of the ID with stored IDs assigned to specific motor vehicles, the transmission of a notification regarding the comparison result from the central facility to the control device, and the issuing on the part of the control device of a signal, if the ID has been located in the stored IDs. The communication comprises an authentication of the central facility thereby.

Abstract: A communication system for a motor vehicle comprises a telemetry terminal with a plurality of interfaces, a motor vehicle control device terminal, a bus by means of which the telemetry terminal and the motor vehicle control device terminal are communicating with each other, and a firewall which monitors the communication between the telemetry terminal and the motor vehicle control device terminal.