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Almost all new functions in a modern car have to be integrated into the existing EE-Architecture of the automobile. It is a challenge by itself to achieve a correct functional behavior across a complex network of various communication systems, gateways and multifunctional electronic control units. The method of physical distribution of sub-functions into such a network and the following functional consolidation of the decomposition have been used for years and will not change. The functional safety of the growing number of direct interventions into vehicle dynamics systems like steering, braking, and acceleration must be carefully analyzed. Does the standard hazard analysis and risk assessment provide enough information to develop dependable safety architectures? Do we understand the impact of consecutive faults and what may cause them to be triggered? Do we fully understand the functionality of carry-over electronics?