Vehicle Deactivation via Random Bus Subscriber Selection

The deactivation function is segmented across multiple bus subscribers instead of being centralized in a single control unit. Each bus subscriber independently holds a portion of the deactivation capability, and all must be simultaneously compromised for reactivation to occur. This segmentation dramatically increases deactivation reliability while distributing system complexity across multiple simple, identical components rather than one complex component.

All bus subscribers involved in the deactivation function are made homogeneous - they have identical hardware architectures, identical software structures, and identical deactivation capabilities. This homogeneity simplifies system coordination because all components behave predictably and can be replaced interchangeably. The security benefit arises from the combination of multiple homogeneous units rather than from their individual complexity.

The assignment of deactivation functions to bus subscribers is made dynamic through random selection rather than fixed assignment. This dynamic approach ensures that the specific set of bus subscribers holding deactivation capabilities changes unpredictably, preventing unauthorized reactivation. The complexity of managing this dynamic assignment is minimal because the system uses simple random number generation and standard bus communication protocols already present in modern vehicles.

The patent introduces an intermediary layer between the remote deactivation command and the vehicle's control systems. Instead of directly controlling a single deactivation unit, the system uses multiple bus subscribers as intermediaries that collectively execute the deactivation function. This intermediary structure maintains remote operability while significantly improving reliability, as all intermediary units must be compromised for successful reactivation.