2020 SUBARU IMPREZA Forward Collision Avoidance Adaptive Cruise Control Problems

Reference complaint no.11684658 confirmed. From email from Tech representative "VDC HYDRAULIC UNIT REPLACEMENT. IT IS AN INTERNAL FAILURE OF THE ABS CONTROL UNIT. THERE ARE SENSORS INSIDE THAT MEASURE BRAKE LINE PRESSURE. THE LEFT FRONT SENSOR IS STUCK AT NEGATIVE 59 BAR. SHOULD BE ZERO AT REST. NOTHING TO DO WITH EYESIGHT THAT LIGHT WILL COME ON WHENEVER THERE IS A WARNING LIGHT ON." The modulator is a safety critical component which undergoes extensive life time testing, one out of 4 pressure sensors should not fail during vehicle life time.

The Eye Sight warning system is activated occasionally and VDC is cut off. The dealer diagnosed code C1742, and recommended replacing the control unit due to a pressure sensor issue after measurement. The units are on back order, which indicates to me a wider spread problem. VDC units should not fail even after 10 years.