Fuses

Each electrical component in the vehicle requires a specific amount of current. The cross-section of the wire leading to the component is determined by this current.

If the current in this electrical circuit increases, for example due to additional consumers or a short circuit, the wire becomes overloaded. It may then become slightly warm or even start to glow if the current supply is not interrupted in time. This is exactly what fuses do. As already noted, so that an Audi does not lose all power due to a fault in the electrical circuit, the fuses are distributed among different circuits. However, the connections between the battery, alternator, starter and ignition switch are not protected by fuses.

Replacing Fuses
PROCEDURE

If one of the fuses needs to be replaced, you can use the small plastic tweezers attached to the cover of the central junction box to remove it.

If the new fuse blows immediately again, check whether a fuse of too low a rating was installed.

If the correct fuse rating was installed, use the fuse chart to identify the connected electrical consumers and check each one separately. The relevant wiring diagram will also help.

In doubtful cases, disconnect all consumers and connect them one at a time. The consumer whose connection causes the fuse to blow is faulty.

Additional Fuses
On certain versions with optional equipment, additional fuses are located on the additional central switch block. These are the ones listed in the fuse chart as numbers 23 – 28.

Number 22 is only fitted on vehicles with a diesel engine. On some versions, fuses for the ignition and injection system are also located on this panel. The red cover marked "Motor-Moteur" serves as protection.