Method for controlling or monitoring suspension components of motor vehicles

The method involves using a computer unit where all or parts of the system variables representing the vehicle state are recorded in the form of parameters or signal data as memory values in one or more volatile memories (5) of the control device. After an interruption and subsequent restoration of the voltage supply of the control device the controls of the setting members are deactivated by the control device or the setting members themselves. Independent claim describes use of method for regulating level of vehicle by setting height and level positions and using ideal value targets whereby the setting members are setting elements which change the distance between the vehicle body and wheel axis. Independent claim describes circuit arrangement with hardware for detecting break in voltage supply of control device.