Aftermarket Ford Flex replacement keys: 45 in-stock listings for model years 2010–2019, including key fobs, from $17.10. Common FCC IDs: CWTWB1U793, M3N5WY8609. Match the FCC ID and part number on your current key, or use our free VIN lookup. Keys are not OEM and most need cutting or programming; eligible items can be returned within 90 days.