FSC = Forward Sensing Camera. This camera and it's associated software has input to numerous systems on your car
i.e High Beam Control System (HBC)
Lane-keep Assist System (LAS) & Lane Departure Warning System (LDWS)
Traffic Sign Recognition System (TSR)
Smart City Brake Support (SCBS)
Smart Brake Support (SBS)
Apart perhaps from the Traffic sign recognition, all of these systems are safety critical. It could be any one of the systems or just the camera itself that has a problem.
Impossible to diagnose without specialised equipment.
You need to go to your dealer. Please keep us informed as your problem could be something that will be of interest to many others.