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In a modern vehicle, hundreds of messages are transmitted each second from one ECU to another via data network, some of those containing vital information for the correct functioning of a specific task. The vehicle's behavior may change depending on the value of the transmitted messages or, in some cases, the latency or total absence of a message due to a problem in the network or in the sender ECU may cause the vehicle to generate a fault code or even assume an emergency mode. Thus, it is necessary to simulate different values and transmission periods for the existing messages in a network in order to test if the vehicle is reacting properly to them. This paper will show how to simplify individual CAN message manipulation in an existing network, using tools available in the market.

The purpose of this paper is the presentation of the main experiences of customers and users of trucks and buses regarding the electronic systems placed in these vehicles, specially in the Latin American market. Basically, in the past years the number of on-board electronic devices increased a lot and the evolution of the customer know-how concerning the new technologies is in progress. Therefore, a line between the mechanical engine and the electronic vehicle management will be traced on this paper, considering the time the customers have taken to react regarding the applied innovations.