Systems and methods for validating predetermined events in reconfigurable control systems are provided. One method includes receiving, by a plurality of redundant processors operating in a first mode, a notice from two of three redundant sensors that the predetermined event occurred and reconfiguring the plurality of redundant processors to operate in a second mode in response to the notice. Another method includes receiving a first notice that one or more sensors detected that a first vehicle is coupled to a second vehicle at a primary control system and a secondary control system and reconfiguring the primary control system and the secondary control system to operate in another mode at substantially the same time in response to the notice.