Interior Fuse Box Location: 2007-2015 Mazda CX-9 - 2009 Click to view0:17Some Mazdas have multiple interior fuse boxes including in the trunk - the video above will show you where the interior fuse box of your 2009 CX-9 is located. If your CX-9 has many options like a sunroof, navigation, heated seats, etc, the more fuses it has. Mazda CX-9 (2016-2018-.) < Fuse Box diagram Fuse box diagram (location and assignment of electrical fuses) for Mazda CX-9 (2016, 2017, 2018-..) Skip to content. Fuse Box diagrams. Fuse box diagrams. Menu Close. Mazda CX-9 (2016-2019-.) fuses. The fuse box is located on the left side of the vehicle. Fuse box in the engine compartment.