Motor vehicle steering system of a motor vehicle having a front wheel steering unit , a steering control unit , two front wheels and one or more rear wheels , wherein the front wheel steering unit having a steering wheel and at least one steering control device which is coupled to at least one of the front wheels for transmitting a steering movement, wherein the steering control unit is signal-connected to the steering wheel for detecting a steering angle (α) and the steering control unit is configured for this purpose, detecting the steering angle (α) of the steering wheel and actuating the steering control unit in such a way that the steering control unit transmits the detected steering angle (α) to the at least one front wheel , wherein at least two actuators are provided which are adapted to act on one or both of the front wheels and/or on one or more of the rear wheels , wherein the steering control unit has a processing unit configured for this purpose - to determine a current trajectory of the motor vehicle in a driving mode; - to detect a malfunction of the front wheel steering unit and/or the steering control unit during driving; - selecting at least one of the actuators in the event of detection of a malfunction; and - to control the at least one selected actuator so that the current trajectory of the motor vehicle is maintained with a small deviation during driving, characterised in that - the motor vehicle steering system is equipped with a data memory, whereby - the steering control unit is signal-connected to the data memory and in which data relating to the actuators are stored, wherein - data of the actuators relating to the reaction time, mode of operation and/or availability are stored in the data memory, and/or table values for control variables and/or data for achieving specific steering angle values are stored in the data memory, wherein - the processing unit is configured to read the data from the data memory and to select one or more actuators depending on a respective malfunction and/or a driving situation, so that the stored data is used to determine and select the actuator or actuators best suited for the corresponding driving situation in the event of a malfunction. - to determine a current trajectory of the motor vehicle in a driving mode; - to detect a malfunction of the front wheel steering unit and/or the steering control unit during driving; - selecting at least one of the actuators in the event of detection of a malfunction; and - to control the at least one selected actuator so that the current trajectory of the motor vehicle is maintained with a small deviation during driving, characterised in that - the motor vehicle steering system is equipped with a data memory, whereby - the steering control unit is signal-connected to the data memory and in which data relating to the actuators are stored, wherein - data of the actuators relating to the reaction time, mode of operation and/or availability are stored in the data memory, and/or table values for control variables and/or data for achieving specific steering angle values are stored in the data memory, wherein - the processing unit is configured to read the data from the data memory and to select one or more actuators depending on a respective malfunction and/or a driving situation, so that the stored data is used to determine and select the actuator or actuators best suited for the corresponding driving situation in the event of a malfunction. <EOS>