The automotive industry is continuously growing and the need for more safety and comfort has led to the creation of smarter cars. The possibility to retrieve any infor- mation from the internet, or other easy access points, has simplified the fault diagnostic procedure. The whole vehicle intelligence is handled by Electronic Control Units (ECU) that are constantly communicating between each other. Different ECUs interact through a common bus involving different devices. However, sometimes the single ECU structure could be very complex, forcing the use of different microcontrollers on the same unit. Thus the communication must be handled also among the cores on the device.