
Lane Change Assist Control Unit for CUPRA FORMENTOR, part numbers 5Q0121251GR and 5Q0121251HH, responsible for managing radar-based driver assistance features such as Blind Spot Monitoring (BSM) and Rear Cross Traffic Alert (RCTA). Mounted typically in the rear side panels, this OEM electronic module interprets signals from radar sensors to detect vehicles approaching from adjacent lanes, enhancing safety during lane changes and reversing maneuvers.