The invention relates to a method for monitoring and modifying motor vehicle functions, having the following steps: ascertaining (10) an anomalous behavior (112) of a function (110); transmitting (20) the anomalous behavior to a back end (200); receiving (30) instructions (230) from the back end (200), said instructions indicating acute measures to be taken in the motor vehicle in order to adequately react to the anomalous behavior (112) of the function (110); ascertaining (40) a motor vehicle component (140) which is the cause of the anomalous behavior on the basis of the received instructions (230); converting (50) the motor vehicle component (140) to a degraded configuration which has a limited functional scope; and if the conversion (50) to the degraded configuration is not possible, converting (52) the motor vehicle component (140) to a safe configuration.