* Underhood Fuse Box: This is the largest fuse box and contains high-current fuses protecting major electrical components. It's located under the hood, usually on the driver's side (though double-check your owner's manual). The lid should have a diagram showing the fuse layout.
* Passenger Compartment Fuse Panel: This is a smaller fuse panel, often located inside the passenger compartment, usually under the dashboard on the driver's side or sometimes in the glove box. Again, the lid will likely have a diagram.
To access them:
1. Underhood Fuse Box: Open the hood of your Expedition. The fuse box is usually a black plastic box with a cover. Locate it and carefully open the cover. Refer to the diagram on the inside of the cover to identify the fuses.
2. Passenger Compartment Fuse Panel: Locate the smaller fuse panel. It might be behind a small access panel or within a storage compartment (glove box). Open the panel and consult the diagram.
Important Note: Always consult your owner's manual for the precise location and layout of the fuse boxes and fuses in your specific 2003 Ford Expedition. The diagrams in the manual are the most accurate and will prevent you from accidentally damaging anything.