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The first step in determining what the issue is is to see what codes are in the The Forward Facing Camera (FFC) module. Do you have a way to retrieve the codes? I would use my WiTech here at the dealership to diagnose and repair your issues..
DIAGNOSIS AND TESTING - FORWARD COLLISION WARNING
The hard wired circuits between components related to the Forward Collision Warning (FCW+) system may be diagnosed using conventional diagnostic tools and procedures. Refer to the appropriate wiring information. The wiring information includes wiring diagrams, proper wire and connector repair procedures, details of wire harness routing and retention, connector pin out information and location views for the various wire harness connectors, splices and grounds.
However, conventional diagnostic methods will not prove conclusive in the diagnosis of the FCW+ system or the electronic controls and communication between modules and other devices that provide some features of the FCW+ system. The most reliable, efficient and accurate means to diagnose the FCW+ system or the electronic controls and communication related to FCW+ system operation requires the use of a diagnostic scan tool.
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Have a great weekend,