Method and device for detecting an impairment of a lever sensor

Abstract

A device for recognizing an impairment of a lever sensor, wherein the lever sensor detects measured values with respect to a filling level of a liquid container of a motor vehicle. The device determines a maximum measured value and a minimum measured value of the lever sensor in a time and/or distance interval of a first phase. The device further determines, in a second phase following the first phase, proportion information relating to a proportion of a time and/or distance interval of the second phase, for which the measured values of the lever sensor lie within a minimum value range for the minimum measured value of the first phase and/or within a maximum value range for the maximum measured value of the first phase, and recognizes an impairment of the lever sensor on the basis of the proportion information.

Dependencies are inferred from the claim text.