A method for determining an operation state of a suspension damper of a vehicle that may include receiving first data, determining whether the vehicle may be in a steady state condition based on the first data, and responsive to the vehicle being determined to be in the steady state condition, determining damping oscillation magnitude data for a set of suspension dampers based on second data. The method may further include performing a comparison between the damping oscillation magnitude data for a reference suspension damper and the damping oscillation data for remaining suspension dampers, determining an operation state of the reference suspension damper based on the comparison, cycling the reference suspension damper to one of the remaining suspension dampers, and repeating the method until the operation state of each one of a set of suspension dampers has been determined.

A method for monitoring a vehicle (1) having a vehicle superstructure (2), a chassis (3) connected to the vehicle superstructure (2), and a monitoring unit (11) which monitors the chassis (3) for damage. In the event that chassis damage is detected, the monitoring unit produces a warning signal (S) by means of a warning signal generator, where the warning signal generator has at least one drive unit (10) by means of which the warning signal (S) is produced in the form of a tactile mechanical vibration.