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Removing and installing relay plate with fuse box — AUDI

Removing and installing relay plate with fuse box on Audi: factory workshop procedure. Full factory text, tools and checks.

Workshop procedure for AUDI — the factory write-up, straight from real workshop data.

factory workshop text

📋 Procedure

Note:

Relay assignment, fuse assignment and ratings, allocation of contact designations, assignment of self-diagnosis connectors

=> "Current Flow Diagrams, Electrical Fault Finding and Fitting Locations" binder

Cover
Fuse assembly tool
Attached to cover

Relay
Spare fuses
Fuses
Removing =>Fig.
1

Relay plate with fuse box
Additional fuses
Additional fuse adapter
Removing and installing => Page
97-5

Housing

Plug housing
Pulling off => Fig.
2
Assignment => Page
97-9

Self-diagnosis connector
Combination nut M5

Fig.1
Removing fuses

A -
Fuse assembly tool, attached to cover

Place tool over fuse and pull fuse out of holder.

Fig.2
Pulling off plug housing

To detach connectors, grip plug housings firmly and pull off.
If this is not possible, pull carefully on wiring loom as well.

Removing and installing additional fuse adapter

Removal:

Lift cover for relay plate in plenum chamber and remove.
Remove relay plate upwards; leave all connectors attached.
Pull out fuse.
Press in catch using small screwdriver.

Pull additional fuse adapter off upwards.

Installation:

Insert additional fuse adapter from top until catch -arrow- can be heard to engage.
Push in fuse.
Push in relay plate.

Note:

Take care not to crush any connecting leads when pushing in.

Attach cover and make sure that it is properly closed (to prevent water from entering).

Wiring loom connections

A -
Air conditioner
B -
Front right
C -
Instrument panel
D -
Front left
E -
Front left
F -
Instrument panel
G -
Instrument panel
H -
Rear
I -
Instrument panel
J -
Instrument panel

K -
Connection, relay position 3
L -
Single connector, terminal 30
M -
M-Options
N -
Output, glow-plug strip fuse
O -
Output, intake manifold preheating
P -
Output, fuse 20

Plug housing assignment

Terminal · Plug housing colour · Connection
A · Grey · 8-pin
B · Black · 8-pin
C · Blue · 8-pin
D · green · 8-pin
E · Yellow · 8-pin
F · Brown · 8-pin
G · red · 8-pin
H · Black · 6-pin
I · red · 6-pin
J · Yellow · 6-pin
K · Black · 9-pin
L · Black · single
M · colourless · single 1)
N · colourless · single
O · Black · single
P · red · single

1)
at contacts 75 ak, 75 as, 75 s, 30 ac, 30 az

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Workshop data on this page last updated 20 Sep 2026.