Fuse box Audi A4 (B5) - fusesdiagram Fuse box in passenger compartment Audi A4 (B5). fuse box location. The unit is located under a cover at the end of the dashboard on the left-hand side. To open cover insert a screwdriver in the slot below the cover and pry it off. The crank handle for manual operation of the electric sun roof is clipped on the inside of the fuse box cover. Audi A4 B5 (1994 to 2001) Fuses List and Amperage Aug 22, 2016Fuse box location. The Audi A4 B5 fuse box is located on the left side of the dashboard (see image on the right). To access it you must have the left hand side door open and remove the side dash cover, pushing it.