Interior Fuse Box Location: 2004-2010 BMW X3 - 2008 BMW X3 Click to view0:22Some BMWs have multiple interior fuse boxes including in the trunk - the video above will show you where the interior fuse box of your 2008 X3 is located. If your X3 has many options like a sunroof, navigation, heated seats, etc, the Author: Braeger Chevy BMW X3 E83 (2003 to 2010) Fuse Box Diagrams, Location and Fuse box location and amperage list. There are 2 fuse boxes on the BMW X3 E83: 1 – Fuse Box located in the engine compartment. To access the engine compartment fuse box, open the hood and look on the right hand side near the windscreen. You’ll see a cover for the fuse box.