Where is the fuse box on a 2004 Audi a4?

The fuse box on a 2004 Audi A4 is located in two main areas. The primary fuse box can be found under the dashboard on the driver's side, accessible by removing a cover panel. Additionally, there is a secondary fuse box located in the engine compartment, near the battery. Always consult the owner's manual for specific details and diagrams.