Interior Fuse Box Location: 2009-2016 Audi A4 Quattro Click to view0:17The video above shows how to replace blown fuses in the interior fuse box of your 2009 Audi A4 Quattro in addition to the fuse panel diagram location. Electrical components such as your map light, radio, heated seats, high beams, power windows all have fuses and if they suddenly stop working, chances are you have a fuse 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.