METHOD FOR INDIRECTLY DERIVING A SYSTEMATIC DEPENDENCE FOR A SYSTEM BEHAVIOUR OF A SOILING PROCESS OF A SURFACE, CLEANING SYSTEM AND MOTOR VEHICLE

A method for indirectly deriving a systematic dependence for a system behavior of a soiling process of a surface of a motor vehicle. A soiling condition of the surface is evaluated via an availability of the sensor. Moreover, the method relates to a method of use of the systematic dependence, a cleaning system, and a motor vehicle.