1. A control unit for operating a motor vehicle equipped with a plurality of actuators and sensors, the control unit comprising: one or more processors and associated memory configured to comprise a basic module and a function module, the function module being constructed in a secured run-time environment, as well as predefined first and second interfaces, each coupling the basic module and the function module: wherein the basic module is configured to execute: a determination of one or more function input quantities, depending on at least one operating quantity of a sensor; providing the one or more function input quantities the first interface; determining control variables of the actuators, depending on one or more output quantities of the function ion module, the one or more output quantities being provided at the second interface; wherein the function module is configured to execute: a determination of the one or more output quantities, depending on the one or more function input quantities provided at the first interface and a predefined quantity of rules, which one or more output quantities characterize an operating strategy from quantity of predefined operating strategies; and providing the one or more output quantities at the second interface.