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Model Based Systems Engineering (MBSE) [1, 2] has emerged as a solution to the extreme design challenges caused by automotive Electrical/Electronic (EE) complexity [3]. This paper explores how coherency in early design can be applied across the entire EE design cycle. Starting from a functional abstraction, we introduce a new lightweight solution to evaluate and guide optimized implementations integrating software, networks, devices, and connectivity. The pattern used for this and the data created can be directly driven into downstream, domain-specific design flows delivering vehicle lower costs, better design quality, and faster innovation.