Audi - Car Manuals, Wiring Diagrams PDF & Fault Codes AUDI Owner & Service Manuals PDF are above the page. Audi - one of the most recognizable in the world of automobile brands. Today, this German company belongs to the car concern Volkswagen. Automobile plant Audi Automobil-Werke began its work in 1909. The company was created after the departure of August Horch from the company Horch, at that time a fairly well-known automaker. Fuse box Audi A4 (B6) - fusesdiagram Locate fuse and relay. Fuse box diagram. Identifying and legend fuse box Audi A4 (B6) 2000-2006. Fuse box Audi A4 (B8) - fusesdiagram Fuse box in passenger compartment Audi A4 (B8). fuse box location. The various electrical circuits are protected by fuses. The fuse boxes are located behind covers on the left and right sides of the dash panel and in the compartment on the right side of the boot.