Interior Fuse Box Location: 2009-2019 Ford Flex - 2009 The video above shows how to replace blown fuses in the interior fuse box of your 2009 Ford Flex in addition to the fuse panel diagram location. 2010 - 2019 Ford Flex - 2010 Fuse Box Diagram Ford Flex - 2010 Fuse Box Diagram. Home; Ford; Flex A headliner designed to flex open. Location. Fuse Amp. Rating. Protected Circuits. 1. 30A.