SYSTEM AND METHOD FOR MONITORING STATE OF FUNCTION OF A MATERIALS HANDLING VEHICLE

A plurality of industrial vehicle operating parameters are observed and evaluated to monitor drivetrain(s) of the vehicle to determine whether a traction motor has become decoupled from its drivetrain, i.e., a dynamic gearbox failure. Determining whether a drivetrain failure has occurred comprises determining if the actual speed of an inside traction motor is greater than the expected speed based on a detected steer angle and speed of an outside traction motor. If a dynamic gearbox failure is detected, a static test may be performed while the vehicle is stopped to confirm the failure. Drive capabilities of the vehicle may be restricted if the dynamic gearbox failure is confirmed by the static test while full drive capabilities are enabled if not. Methods and corresponding vehicles and systems are disclosed.