Controlling availability of features of a vehicle can be based on a set of initial parameters, with each parameter related to a feature of the vehicle and defining availability of the feature. The set of initial parameters can define at least one feature of the vehicle as unavailable but further define the unavailability of the at least one feature of the vehicle as overridable upon detection of an emergency condition by the control system of the vehicle. The control system of the vehicle can apply the set of initial parameters to operations of the vehicle to control. At another time, a set of updated parameters with at least one parameter having a different value than the initial set of parameters can be applied by the control system of the vehicle to control operations of the vehicle based on levels indicated by the set of updated parameters.