Additional relay support (Audi A4 B5)

For relays and control units that are not located in the central switching unit, the Audi A4 also has so-called additional relay supports installed under the instrument panel:

• The 13-position auxiliary relay support is located above the central switching unit.
• The 8-position auxiliary relay support is located to a certain extent on the second level in front under the central switching unit and the 13-position auxiliary relay support. In addition to numerous relays and control units, various thermal fuses are located here.

The placement of the sockets of the "13-slot auxiliary relay support". The nodes connected there are explained in table.

Left: The "8-position auxiliary relay support" (arrow) is located under the central switching unit and, in addition to the relays (1), also houses various thermal fuses (2).



Right: placement of the "8-slot auxiliary relay support" sockets.