This position sensor monitors the lift-arm assembly on the host tractor. It sends a signal to the control unit indicating the current height or angle of the three-point linkage, which the system uses to regulate the hydraulic lift circuit. A failing sensor can cause erratic hitch movement or prevent the lift from responding to the operator's commands. This Bosch-manufactured component matches the original sensor's electrical characteristics and mounting geometry, ensuring the control unit receives a correct signal without calibration offsets.