The video above shows how to replace blown fuses in the interior fuse box of your 2013 Ford E-350 Super Duty in addition to the fuse panel diagram location. Electrical components such as your map light, radio, heated seats, high beams, power windows all have fuses and if they suddenly stop working, chances are you have a fuse that has blown out. If your E-350 Super Duty is experiencing electrical problems, you should always check the fuses first, because they are relatively easy to check and cheap to change. Some Fords have multiple interior fuse boxes including in the trunk - the video above will show you where the interior fuse box of your 2013 E-350 Super Duty is located. If your E-350 Super Duty has many options like a sunroof, navigation, heated seats, etc, the more fuses it has. Some components may have multiple fuses, so make sure you check all of the fuses that are linked to the component in question.