Wiring (avant) Audi A4 B8

ANTENNA WIRES, REPAIRING

The following description can be found in General Information .

CONTACT CORROSION

Contact corrosion can occur if incorrect fasteners (bolts, nuts, washers, etc.) are used.

For this reason, only fasteners with a special surface coating are used.

In addition, rubber or plastic parts and adhesive consist of non-conductive materials.

If there are doubts as to whether parts are suitable or not, use new parts.

Note. We only recommend original replacement parts, they have been tested and are compatible with aluminum. We recommend using Audi accessories. Damage resulting from contact corrosion is not covered by warranty.

CONNECTOR HOUSINGS AND CONNECTORS, REPAIRING

The following descriptions can be found in General Information

1. Connector housings and connectors, repair information
2. Contacts in connector housing, repairing
3. Single wire seals, installing
4. Connector housings with insulation displacement terminal, repairing

CONTACT HOUSINGS, RELEASING AND DISASSEMBLING

The following descriptions can be found in General Information

1. Releasing and disassembly connector housings, general information
2. Secondary lock
3. Primary lock
4. Primary connector with round connector systems
5. Primary connector with flat connector systems
6. Primary connector with special connector systems

CLEANING CONTACT SURFACES USING THE VAS 6410

The following descriptions can be found in General Information

1. Wiring eyelets, servicing
2. Threaded connections, servicing
3. Battery clamps and battery terminals, cleaning
4. Protecting

FIBER OPTIC CABLE

The following descriptions can be found in General Information

1. Determining the location of the error
2. Assemble the fiber-optic cable with the fiber-optic cable repair kit VAS 6223
3. Assemble the fiber-optic cable with the fiber-optic cable repair kit VAS 6223A
4. Fiber-optic cable, disconnecting from wiring harness connector

WIRING HARNESSES AND CONNECTORS, REPAIRING

The following descriptions can be found in General Information

1. General notes on repairs on vehicle electrical system
2. General notes for repairing wiring harnesses and connectors
3. Repairing wires for pyrotechnic components
4. Repairing Controller Area Network (CAN) Bus wires
5. FlexRay Wires, Repairing
6. Repairing a 0.25 mm 2 wire with individual crimp connector
7. Repairing a wire 0.35 mm 2 or greater with individual crimp connector
8. Repairing a 0.25 mm 2 wire with intermediate wire section
9. Repair a wiring 0.35 mm 2 or greater with intermediate wire section

ENGINE COMPARTMENT E-BOX, WIRE JUNCTION, FUSE HOLDER AND BATTERY OVERVIEW

Observe the notes on contact corrosion. Refer to CONTACT CORROSION .

Scheme 122

1. Engine Compartment E-box Removing and installing, refer to «ENGINE COMPARTMENT E-BOX»(/audi/a4/b8-2007-2012/remont/wiring-system-data-link-connectors-pwr-dist-grnd-dist/#wiring-avant__engine-compartment-e-box) . Tightening specification, refer to «ENGINE COMPARTMENT E-BOX BOLT TIGHTENING SPECIFICATION»(/audi/a4/b8-2007-2012/remont/wiring-system-data-link-connectors-pwr-dist-grnd-dist/#wiring-avant) .
2. Fuse Panel B -SB- Relay/fuse panel in engine compartment E-box. Removing and installing, refer to «FUSE PANEL B, ENGINE COMPARTMENT E-BOX»(/audi/a4/b8-2007-2012/remont/wiring-system-data-link-connectors-pwr-dist-grnd-dist/#wiring-avant__fuse-panel-b-engine-compartment-e-box) . With suppressor -C24- removing and installing. Refer to «SUPPRESSOR»(/audi/a4/b8-2007-2012/remont/wiring-system-data-link-connectors-pwr-dist-grnd-dist/#wiring-avant__suppressor) .
3. Cover For the engine compartment E-box. Tightening specification, refer to «ENGINE COMPARTMENT E-BOX BOLT TIGHTENING SPECIFICATION»(/audi/a4/b8-2007-2012/remont/wiring-system-data-link-connectors-pwr-dist-grnd-dist/#wiring-avant) .
4. Terminal 30 Wire junction 2 -TV22- Removing and installing, refer to «TERMINAL 30 WIRE JUNCTION 2»(/audi/a4/b8-2007-2012/remont/wiring-system-data-link-connectors-pwr-dist-grnd-dist/#wiring-avant__terminal-30-wire-junction-2) .
5. Right Front Door Cut Off Connector Disconnecting, refer to «DOOR CUT-OFF CONNECTOR, DISCONNECTING»(/audi/a4/b8-2007-2012/remont/wiring-system-data-link-connectors-pwr-dist-grnd-dist/#wiring-avant__door-cut-off-connector-disconnecting) .
6. Right Rear Door Cut Off Connector Disconnecting, refer to «DOOR CUT-OFF CONNECTOR, DISCONNECTING»(/audi/a4/b8-2007-2012/remont/wiring-system-data-link-connectors-pwr-dist-grnd-dist/#wiring-avant__door-cut-off-connector-disconnecting) .
7. Fuse Panel A -SA- In the luggage compartment. Removing and installing, refer to «FUSE PANEL A, LUGGAGE COMPARTMENT»(/audi/a4/b8-2007-2012/remont/wiring-system-data-link-connectors-pwr-dist-grnd-dist/#wiring-avant__fuse-panel-a-luggage-compartment) .
8. Battery
9. Left Rear Door Cut Off Connector Disconnecting, refer to «DOOR CUT-OFF CONNECTOR, DISCONNECTING»(/audi/a4/b8-2007-2012/remont/wiring-system-data-link-connectors-pwr-dist-grnd-dist/#wiring-avant__door-cut-off-connector-disconnecting) .
10. Left Front Door Cut Off Connector Disconnecting, refer to «DOOR CUT-OFF CONNECTOR, DISCONNECTING»(/audi/a4/b8-2007-2012/remont/wiring-system-data-link-connectors-pwr-dist-grnd-dist/#wiring-avant__door-cut-off-connector-disconnecting) .
11. Engine Control Module (ECM)

Scheme 123

1. Bolt - 3.5 Nm
2. Engine compartment E-box cover
3. Bolt - 4.5 Nm
4. Engine compartment E-box

Scheme 124

1. Positive wire - 9 Nm
2. Fuse panel B
3. Electrical wire on the back - 9 Nm

Scheme 125

1. Fan wire - 7.5 Nm
2. Fan wire - 7.5 Nm
3. PTC line - 18 Nm
4. Nut - 7.5 Nm
5. E-box positive wire - 7.5 Nm
6. Battery wire - 16 Nm
7. Battery jump start terminal -U6- - 20 Nm
8. Bolt - 7.5 Nm
9. Positive cable Starter - 18 Nm
10. Nut - 7.5 Nm

Scheme 126

1. Electrical wire - 7.5 Nm
2. Nut - 9 Nm
3. Nut - 9 Nm
4. Fuse panel A inside the luggage compartment
5. Positive wire to the engine - 7.5 Nm
6. Bolt - 3.5 Nm
7. Battery interrupt igniter -N253-. Refer to «Description and Operation»(/audi/a4/b8-2007-2012/remont/airbag/#passenger-protection-airbags-seat-belts-avant) .
8. Electrical wire - 18 Nm

RELAY CARRIER AND FUSE PANEL IN INSTRUMENT PANEL AND A-PILLAR OVERVIEW

Observe the notes on contact corrosion. Refer to CONTACT CORROSION .

Scheme 127

1. Vehicle Electrical System Control Module -J519- Removing and installing, refer to «VEHICLE ELECTRICAL SYSTEM CONTROL MODULE -J519»(/audi/a4/b8-2007-2012/remont/wiring-system-data-link-connectors-pwr-dist-grnd-dist/#wiring-avant__vehicle-electrical-system-control-module-j519) .
2. Relay/Fuse Panel Mount for Vehicle Electrical System Control Module Removing and installing, refer to «RELAY/FUSE PANEL MOUNT WITH VEHICLE ELECTRICAL SYSTEM CONTROL MODULE»(/audi/a4/b8-2007-2012/remont/wiring-system-data-link-connectors-pwr-dist-grnd-dist/#wiring-avant__relayfuse-panel-mount-with-vehicle-electrical) .
3. Nut 3 Nm Quantity: 2
4. Passenger Side A-Pillar 6 Pin Connector Station Removing and installing, refer to «PASSENGER SIDE A-PILLAR 6 PIN CONNECTOR STATION»(/audi/a4/b8-2007-2012/remont/wiring-system-data-link-connectors-pwr-dist-grnd-dist/#wiring-avant__passenger-side-a-pillar-6-pin-connector) .
5. Fuse Panel D -SD- On the right side of the instrument panel. Removing and installing, refer to «FUSE PANEL D, WITH RIGHT INSTRUMENT PANEL FUSE PANEL»(/audi/a4/b8-2007-2012/remont/wiring-system-data-link-connectors-pwr-dist-grnd-dist/#wiring-avant__fuse-panel-d-with-right-instrument) .
6. Right Central Tube
7. Instrument Panel CAN Cut Off Connector -T46s- Removing and installing, refer to «INSTRUMENT PANEL CAN CUT-OFF CONNECTOR»(/audi/a4/b8-2007-2012/remont/wiring-system-data-link-connectors-pwr-dist-grnd-dist/#wiring-avant__instrument-panel-can-cut-off-connector) .
8. Left Central Tube
9. Fuse Panel C -SC- On the left side of the instrument panel. Removing and installing, refer to «FUSE PANEL C, WITH LEFT INSTRUMENT PANEL FUSE PANEL»(/audi/a4/b8-2007-2012/remont/wiring-system-data-link-connectors-pwr-dist-grnd-dist/#wiring-avant__fuse-panel-c-with-left-instrument) .
10. Interior CAN Cut Off Connector -T46i- Removing and installing, refer to «INTERIOR CAN CUT-OFF CONNECTOR»(/audi/a4/b8-2007-2012/remont/wiring-system-data-link-connectors-pwr-dist-grnd-dist/#wiring-avant__interior-can-cut-off-connector) .
11. Driver Side A-Pillar 6 Pin Connector Station On the left side of the instrument panel. Removing and installing, refer to «DRIVER SIDE A-PILLAR 6 PIN CONNECTOR STATION»(/audi/a4/b8-2007-2012/remont/wiring-system-data-link-connectors-pwr-dist-grnd-dist/#wiring-avant__driver-side-a-pillar-6-pin-connector) .
12. 3 Pin Relay/Fuse Panel Under the left side of the instrument panel. Removing and installing, refer to «3 PIN RELAY/FUSE PANEL»(/audi/a4/b8-2007-2012/remont/wiring-system-data-link-connectors-pwr-dist-grnd-dist/#wiring-avant__3-pin-relayfuse-panel) .
13. 4 Pin Relay/Fuse Panel and Threaded Connection Under the left side of the instrument panel. Removing and installing, refer to «4 PIN RELAY/FUSE PANEL, WITH THREADED CONNECTION»(/audi/a4/b8-2007-2012/remont/wiring-system-data-link-connectors-pwr-dist-grnd-dist/#wiring-avant__4-pin-relayfuse-panel-with-threaded) .

Scheme 128

1. Nut - 9 Nm
2. Nut - 9 Nm
3. 4 pin relay/fuse panel

LUGGAGE COMPARTMENT RELAY AND FUSE CARRIER AND CONTROL MODULES OVERVIEW

Observe the notes on contact corrosion. Refer to CONTACT CORROSION .

Scheme 129

1. Fuse Panel F -SF- Removing and installing, refer to «FUSE PANEL. RIGHT LUGGAGE COMPARTMENT»(/audi/a4/b8-2007-2012/remont/wiring-system-data-link-connectors-pwr-dist-grnd-dist/#wiring-avant__fuse-panel-right-luggage-compartment) . Tightening specification, refer to «FUSE PANEL F NUT TIGHTENING SPECIFICATIONS»(/audi/a4/b8-2007-2012/remont/wiring-system-data-link-connectors-pwr-dist-grnd-dist/#wiring-avant) .
2. Parking Aid Control Module -J446- Overview, refer to «PARKING AID OVERVIEW»(/audi/a4/b8-2007-2012/remont/exterior-lights/#exterior-lights-switches-avant) .
3. Retaining Frame For the control modules. For vehicles without a trailer hitch.
4. Towing Recognition Control Module -J345- Removing and installing, refer to «TOWING RECOGNITION CONTROL MODULE»(/audi/a4/b8-2007-2012/remont/door-locks-anti-theft-systems/#interior-lights-switches-avant__towing-recognition-control-module) .
5. Auxiliary Heater Radio Receiver -R64- Does not apply to the US/Canadian market.
6. Retaining Frame For the control modules. For vehicles with a trailer hitch.
7. Electromechanical Parking Brake Control Module -J540- Removing and installing, refer to «Removal and Installation»(/audi/a4/b8-2007-2012/remont/mechanical-hydraulic/#mechanical-components-brake-system-avant__removal-and-installation) .
8. Retaining Frame For the control modules.
9. Comfort System Central Control Module -J393- Removing and installing, refer to «COMFORT SYSTEM CENTRAL CONTROL MODULE -J393»(/audi/a4/b8-2007-2012/remont/wiring-system-data-link-connectors-pwr-dist-grnd-dist/#wiring-avant__comfort-system-central-control-module-j393) .
10. Special Purpose Vehicle Control Module -J608- In the luggage compartment, on the right side. Removing and installing, refer to «SPECIAL PURPOSE VEHICLE CONTROL MODULE»(/audi/a4/b8-2007-2012/remont/wiring-system-data-link-connectors-pwr-dist-grnd-dist/#wiring-avant__special-purpose-vehicle-control-module) .
11. Vehicle Positioning System Interface Control Module -J843- Removing and installing, refer to «Description and Operation»(/audi/a4/b8-2007-2012/remont/door-locks-anti-theft-systems/#front-doors-central-locking-system-avant) .
12. Rear View Camera System Control Module -J772- Removing and installing, refer to «Removal and Installation»(/audi/a4/b8-2007-2012/remont/communication-devices/#communication-avant) .
13. Retaining Frame For the control modules.
14. Electronic Damping Control Module -J250- Removing and installing, refer to «Removal and Installation»(/audi/a4/b8-2007-2012/remont/suspension-front/#front-suspension-avant) .

Scheme 130

1 - Fuse panel F

2 - Fuse panel

4 - Nut - 3 Nm

5 - Relay/control module

Scheme 131

Tighten the nuts -arrows- to 3 Nm.

1 - Retaining frame

Scheme 132

Tighten the bolts -1 and 2- to 3 Nm.

Tighten the nut -4- to 3 Nm.

3 - Retaining frame

FASTENER TIGHTENING SPECIFICATIONS

Engine Compartment E-Box Bolt Tightening Specification

1. Bolt - 3.5 Nm
2. Engine compartment E-box cover
3. Bolt - 4.5 Nm
4. Engine compartment E-box

Fuse Panel B in Engine Compartment E-Box Bolt Tightening Specification

1. Positive wire - 9 Nm
2. Fuse panel B
3. Electrical wire on the back - 9 Nm

Terminal 30 Wire junction 2 Bolt Tightening Specifications

1. Fan wire - 7.5 Nm
2. Fan wire - 7.5 Nm
3. PTC line - 18 Nm
4. Nut - 7.5 Nm
5. E-box positive wire - 7.5 Nm
6. Battery wire - 16 Nm
7. Battery jump start terminal -U6- - 20 Nm
8. Bolt - 7.5 Nm
9. Positive cable starter - 18 Nm
10. Nut - 7.5 Nm

Fuse Panel A Bolt Tightening Specifications

1. Electrical wire - 7.5 Nm
2. Nut - 9 Nm
3. Nut - 9 Nm
4. Fuse panel A inside the luggage compartment
5. Positive wire to the engine - 7.5 Nm
6. Bolt - 3.5 Nm
7. Battery interrupt igniter -N253-. Refer to «Description and Operation»(/audi/a4/b8-2007-2012/remont/airbag/#passenger-protection-airbags-seat-belts-avant) .
8. Electrical wire - 18 Nm

4 Pin Relay/Fuse Panel with Threaded Connection Nut Tightening Specifications

1. Nut - 9 Nm
2. Nut - 9 Nm
3. 4 pin relay/fuse panel

Fuse Panel F Nut Tightening Specifications

1 - Fuse panel F

2 - Fuse panel

4 - Nut - 3 Nm

5 - Relay/control module

Comfort System Central Control Module Retaining Frame Nut Tightening Specifications

Tighten the nuts -arrows- to 3 Nm.

1 - Retaining frame

Special Purpose Vehicle Control Module Retaining Frame Bolt/Nut Tightening Specifications

Tighten the bolts -1 and 2- to 3 Nm.

Tighten the nut -4- to 3 Nm.

3 - Retaining frame

VEHICLE DIAGNOSIS, TESTING AND INFORMATION SYSTEMS

The following descriptions can be found in General Information

1. Application information and safety precautions
2. Connecting the Vehicle Diagnostic Tester

DOOR CUT-OFF CONNECTOR, DISCONNECTING

Procedure

Scheme 133

Release the connector catch in the -direction of the arrow A- and remove the door cut-off connector -1- toward the outside -arrow B-.

ENGINE COMPARTMENT E-BOX

Removing

Scheme 134

With the ignition turned off, disconnect the battery ground cable. Refer to BATTERY, DISCONNECTING AND CONNECTING .

Remove the washer fluid reservoir filler neck. Refer to WASHER FLUID RESERVOIR FILLER NECK .

Remove the windshield wiper motor. Refer to WIPER MOTOR WITH WIPER MOTOR CONTROL MODULE .

Remove the bolts -arrows- and the engine compartment E-box cover.

Note. Ignore item -1-.

Release the retainers -A arrows- and remove the Engine Control Module (ECM) -arrow B-.

Scheme 135

Disconnect the electrical connector -2- if applicable.

Scheme 136

Disconnect the electrical connectors -4- and remove the electrical wire -3- on the front and back side.

Open the retainers -arrow- and remove fuse panel B -1-.

Disengage the engine wiring harness at the electronics box and lay to the side.

Remove the alarm horn -H12- if applicable, refer to ALARM HORN and free up the electrical wiring harness.

Scheme 137

Remove the bolts -arrows-.

Disconnect the electrical connector -1- for the brake fluid level warning switch -F34-.

Lift the engine compartment E-box -3- and disconnect the clutch position sensor -G476- connector -2-.

Disengage the wiring harness -1- on the engine compartment E-box.

Scheme 138

Release the retaining clips -2 and 5- and slide the ECM retaining frame -3- as far back into the vehicle interior as possible.

Remove the engine compartment E-box -4-.

Installing

1. Tightening specifications, refer to «ENGINE COMPARTMENT E-BOX, WIRE JUNCTION, FUSE HOLDER AND BATTERY OVERVIEW => Engine Compartment E-Box Bolt Tightening Specification»(/audi/a4/b8-2007-2012/remont/wiring-system-data-link-connectors-pwr-dist-grnd-dist/#wiring-avant__engine-compartment-e-box-wire-junction-fuse) .

Install in reverse order of removal, observing the following

Install fuse panel B. Refer to FUSE PANEL B, ENGINE COMPARTMENT E-BOX .

Install the alarm horn. Refer to ALARM HORN .

Connect the battery. Required actions, refer to BATTERY, DISCONNECTING AND CONNECTING .

Install the windshield wiper motor. Refer to WIPER MOTOR WITH WIPER MOTOR CONTROL MODULE .

Install the washer fluid reservoir filler neck. Refer to WASHER FLUID RESERVOIR FILLER NECK .

FUSE PANEL A, LUGGAGE COMPARTMENT

Removing

Scheme 139

With the ignition turned off, disconnect the battery ground cable. Refer to BATTERY, DISCONNECTING AND CONNECTING .

Remove the tool kit mount -1-.

Remove the subwoofer -1-. Refer to Removal and Installation .

Note. If it not possible to remove fuse panel A from the battery terminal, then remove the bolt -4- on the battery bracket -3- and pull the battery -2- just a little to the left -arrow-.

Loosen the nut -1- several turns and remove the battery positive wire terminal clamp with the fuse panel A from the battery terminal.

Scheme 140

Release the spring -3- and open the cover -2- over fuse panel A -arrow-.

Disconnect electrical wires -1, 5, 6 and 8-.

Remove the positive terminal clamp -4- and fuse panel A from the battery pole.

Remove the battery interrupt igniter -N253- -item 7-. Refer to Removal and Installation .

Remove fuse panel A.

Note. Check the exact assignment for fuse panel A in the current wiring diagram. Refer to the appropriate SYSTEM WIRING DIAGRAMS information.

Installing

1. Tightening specification, refer to «FUSE PANEL A BOLT TIGHTENING SPECIFICATIONS»(/audi/a4/b8-2007-2012/remont/wiring-system-data-link-connectors-pwr-dist-grnd-dist/#wiring-avant) .

Install in reverse order of removal, observing the following

Install the battery interrupt igniter. Refer to Removal and Installation .

Install the retaining bracket. Refer to BATTERY => Installing .

Connect the battery. Required actions, refer to BATTERY, DISCONNECTING AND CONNECTING .

FUSE PANEL B, ENGINE COMPARTMENT E-BOX

Removing

With the ignition turned off, disconnect the battery ground cable. Refer to BATTERY, DISCONNECTING AND CONNECTING .

Remove the washer fluid reservoir filler neck. Refer to WASHER FLUID RESERVOIR FILLER NECK .

Remove the bolts -arrows- and the engine compartment E-box cover.

Note. Disregard item -1-.

Release the retainers -A arrows- and remove the Engine Control Module (ECM) -arrow B-.

Disconnect the electrical connector -2- if applicable.

Disconnect the electrical connectors -4- and remove the electrical wire -3-.

Open the retainers -arrow- and remove fuse panel B -1-.

Disengage engine wiring harness at electronics box and lay aside.

Remove the electrical wire -5-.

Scheme 141

Remove the relay -3- and control modules -4- from fuse panel B.

Release the retaining clip -arrow-, push the fuse panel -2- back and out and disengage it.

Release the retaining clip and press the auxiliary fuse panel -1- back and out.

Release the retaining clips -arrows- and press the relay carrier -2- back and out of the bracket -1-.

Scheme 142

Remove fuse panel B from the engine compartment E-box.

Installing

1. Tightening specifications, refer to «FUSE PANEL B IN ENGINE COMPARTMENT E-BOX BOLT TIGHTENING SPECIFICATION»(/audi/a4/b8-2007-2012/remont/wiring-system-data-link-connectors-pwr-dist-grnd-dist/#wiring-avant) .

Install in reverse order of removal, observing the following

Install the washer fluid reservoir filler neck. Refer to WASHER FLUID RESERVOIR FILLER NECK .

Connect the battery. Required actions, refer to BATTERY, DISCONNECTING AND CONNECTING .

FUSE PANEL, ENGINE COMPARTMENT E-BOX

Removing

Remove the fuse panel B. Refer to FUSE PANEL B, ENGINE COMPARTMENT E-BOX .

Release the retaining clip -arrow- and push the fuse panel -2- back and out and disengage it.

Note. Ignore the remaining -items-.

Unlock the release and remove from the fuse carrier, if equipped.

Scheme 143

Remove the fuses from the fuse panel.

Release retaining clips -arrows- and remove the cover from the fuse panel.

Pull off the retaining strip -1- for the harness connectors -arrow- and remove the harness connectors from the connector socket.

Scheme 144

Note. The exact assignment of the fuse panel in the engine compartment E-box can be found in the applicable wiring diagram. Refer to the appropriate SYSTEM WIRING DIAGRAMS information.

Installing

Install in reverse order of removal, observing the following

Install fuse panel B. Refer to FUSE PANEL B, ENGINE COMPARTMENT E-BOX .

Connect the battery. Required actions, refer to BATTERY, DISCONNECTING AND CONNECTING .

TERMINAL 30 WIRE JUNCTION 2

Removing

Scheme 145

Vehicles through 05.08

Unclip the plenum chamber cover -2- and remove it.

Note. Ignore items -1 and 3- and the -arrow-.

Vehicles from 06.08

Scheme 146

Remove the bolts -3-.

Remove the clips -2- from the mounts and remove the plenum chamber cover -1-.

Continuation for All Vehicles

Scheme 147

Release the retainer -arrow A- and open the cover -arrow B-.

Disconnect the wires -1, 2, 3, 5, 6 and 9-.

Remove the bolt -8- and remove the terminal 2 wire junction 30 -TV22- from the strut tower.

Note. Ignore -4, 7 and 10-.

Installing

1. Tightening specification, refer to «TERMINAL 30 WIRE JUNCTION 2 BOLT TIGHTENING SPECIFICATIONS»(/audi/a4/b8-2007-2012/remont/wiring-system-data-link-connectors-pwr-dist-grnd-dist/#wiring-avant) .

Install in reverse order.

SUPPRESSOR

Removing

Remove fuse panel B inside the engine compartment E-box. Refer to FUSE PANEL B, ENGINE COMPARTMENT E-BOX .

Note. The electrical connectors do not need to be disconnected.

Disconnect the cable tie -2-.

Scheme 148

Disconnect the electrical connector -1-.

Remove the suppressor -C24- -item 3-.

Installing

Install in reverse order of removal, observing the following

Note. When installing, install cable ties at same location.

Install fuse panel B into the engine compartment E-box. Refer to FUSE PANEL B, ENGINE COMPARTMENT E-BOX .

3 PIN RELAY/FUSE PANEL

Removing

Scheme 149

Turn off the ignition and remove the ignition key.

Remove the driver side instrument panel cover. Refer to Removal and Installation .

Disengage the 3 pin relay/fuse panel by pressing the retaining springs in the -direction of the arrow- and remove the relay/fuse panel -1-.

Unclip the fuse panel on the relay and fuse panel.

Remove the relay and control modules.

Release the retaining clips -arrows- and press the relay carrier -2- back and out of the bracket -1-.

Note. The exact assignment of the 3 pin relay/fuse panel can be found in the applicable wiring diagram. Refer to the appropriate SYSTEM WIRING DIAGRAMS information.

Installing

Install in reverse order of removal, observing the following

Install the driver side instrument panel cover. Refer to Removal and Installation .

4 PIN RELAY/FUSE PANEL, WITH THREADED CONNECTION

Removing

Turn off the ignition and remove the ignition key.

Remove the driver side instrument panel cover. Refer to Removal and Installation .

Disengage the 3 pin relay/fuse panel by pressing the retaining springs in the -direction of the arrow- and remove the relay/fuse panel -1-.

Mark the electrical wires -1 and 2- before removing so they can be installed later.

Remove the electrical wire -1- on the 4 pin relay/fuse panel.

Release the retaining spring -arrow A- and tilt the relay/fuse panel -3- out of the mount -arrow B-.

On the rear side, remove the electrical wire -2- on the 4 pin relay/fuse panel.

Unclip fuse panel on relay carrier.

Remove the relay and control modules.

Release the retaining clips -arrows- and press the relay carrier -2- back and out of the bracket -1-.

Note. The exact assignment of the 4 pin relay/fuse panel with threaded connection can be found in the applicable wiring diagram. Refer to the appropriate SYSTEM WIRING DIAGRAMS information.

Installing

1. Tightening specification, refer to «4 PIN RELAY/FUSE PANEL WITH THREADED CONNECTION NUT TIGHTENING SPECIFICATIONS»(/audi/a4/b8-2007-2012/remont/wiring-system-data-link-connectors-pwr-dist-grnd-dist/#wiring-avant) .

Install in reverse order of removal, observing the following

Install the driver side instrument panel cover. Refer to Removal and Installation .

DRIVER SIDE A-PILLAR 6 PIN CONNECTOR STATION

Removing

Scheme 150

With the ignition turned off, disconnect the battery ground cable. Refer to BATTERY, DISCONNECTING AND CONNECTING .

Remove the lower left A-pillar trim panel. Refer to Removal and Installation .

Press the retaining clip in the -direction of the arrow- and disengage the connector station -3- at the A-pillar.

Unclip fuse panels from coupling station.

Disconnect the airbag electrical connector -1-. Refer to Removal and Installation .

Remove the mount -2- for the interior CAN cut-off connector -T46i-. Refer to INTERIOR CAN CUT-OFF CONNECTOR MOUNT .

Remove the relay and control modules.

Release the retaining clips -arrows- and press the relay carrier -2- back and out of the bracket -1-.

Note. For the exact assignment of the driver side A-pillar 6-pin connector station, see the applicable wiring diagram. Refer to the appropriate SYSTEM WIRING DIAGRAMS information.

Installing

Install in reverse order of removal, observing the following

Install the interior CAN cut-off connector mount. Refer to INTERIOR CAN CUT-OFF CONNECTOR MOUNT .

Connect the airbag connector. Refer to Removal and Installation .

Install the lower left A-pillar trim panel. Refer to Removal and Installation .

Connect the battery. Required actions, refer to BATTERY, DISCONNECTING AND CONNECTING .

FUSE PANEL C, WITH LEFT INSTRUMENT PANEL FUSE PANEL

Special tools and workshop equipment required

1. Removal Wedge 3409

Removing

Scheme 151

Pry the instrument panel side cover -1- up using the 3409 -arrow- and remove it.

Open the clips -1- in -direction of arrow- and push the fuse carriers -2 through 4- out of fuse panel C.

Scheme 152

Open the clips -arrow A- and remove fuse panel C -2- in -direction of arrow B- on the central tube -1- for the instrument panel.

Scheme 153

Installing

Install in reverse order.

FUSE PANEL D, WITH RIGHT INSTRUMENT PANEL FUSE PANEL

Removing

Scheme 154

Turn off the ignition and remove the ignition key.

Remove the glove compartment. Refer to Removal and Installation .

Remove the interior CAN cut-off connector -T46i- mount -item 4-. Refer to INSTRUMENT PANEL CAN CUT-OFF CONNECTOR MOUNT .

Release retaining clips -1- in the -direction of the arrow- and press the fuse panels -2- and -3- back and out of the fuse panel D.

Open the clips -arrow A- and remove fuse panel D -2- in -direction of arrow B- on the central tube -1- for the instrument panel.

Scheme 155

Installing

Install in reverse order of removal, observing the following

Install the interior CAN cut-off connector mount. Refer to INSTRUMENT PANEL CAN CUT-OFF CONNECTOR MOUNT .

Install the glove compartment. Refer to Removal and Installation .

INSTRUMENT PANEL CAN CUT-OFF CONNECTOR

Special tools and workshop equipment required

1. Trim Removal Wedge 3409

Removing

Scheme 156

Turn off the ignition and remove the ignition key.

Pry the instrument panel side cover off with the 3409 -arrow- and remove it.

Press retaining tabs -1- and release retainer -arrow-.

Scheme 157

Remove the instrument panel CAN cut-off connector -T46s- -item 2-.

Note. For the exact assignment of the interior CAN cut-off connector, see the applicable wiring diagram. Refer to the appropriate SYSTEM WIRING DIAGRAMS information.

Installing

Install in reverse order.

INSTRUMENT PANEL CAN CUT-OFF CONNECTOR MOUNT

Removing

Scheme 158

Remove the glove compartment. Refer to Removal and Installation .

Remove the instrument panel CAN cut-off connector -T46s-. Refer to INSTRUMENT PANEL CAN CUT-OFF CONNECTOR .

Slide the locking lever -2- into the "open" position -arrow-.

Press the release -1- and press the mount -3- for the instrument panel CAN cut-off connector back.

Installing

Scheme 159

Install in reverse order of removal, observing the following

Slide the locking lever -1- on the mount into the "closed" position.

1. Both markings -arrows- must align.

Install the instrument panel CAN cut-off connector. Refer to INSTRUMENT PANEL CAN CUT-OFF CONNECTOR .

Install the glove compartment. Refer to Removal and Installation .

INTERIOR CAN CUT-OFF CONNECTOR

Removing

Turn off the ignition and remove the ignition key.

Remove the lower left A-pillar trim panel. Refer to Removal and Installation .

Press retaining tabs -1- and release retainer -arrow-.

Remove the interior CAN cut-off connector -T46i- -item 2-.

Note. For the exact assignment of the interior CAN cut-off connector, see the applicable wiring diagram. Refer to the appropriate SYSTEM WIRING DIAGRAMS information.

Installing

Install in reverse order of removal, observing the following

Install the lower left A-pillar trim panel. Refer to Removal and Installation .

INTERIOR CAN CUT-OFF CONNECTOR MOUNT

Removing

Disengage the left A-pillar connector station. Refer to DRIVER SIDE A-PILLAR 6 PIN CONNECTOR STATION .

Remove the interior CAN cut-off connector -T46i-. Refer to INTERIOR CAN CUT-OFF CONNECTOR .

Slide the locking lever -2- into the "open" position -arrow-.

Press the release -1- and press the mount -3- for the interior CAN cut-off connector back.

Installing

Install in reverse order of removal, observing the following

Slide the locking lever -1- on the mount into the "closed" position.

1. Both markings -arrows- must align.

Install the interior CAN cut-off connector. Refer to INTERIOR CAN CUT-OFF CONNECTOR .

Install the left A-pillar connector station. Refer to DRIVER SIDE A-PILLAR 6 PIN CONNECTOR STATION .

LEFT INSTRUMENT PANEL FUSE PANEL

Removing

With the ignition turned off, disconnect the battery ground cable. Refer to BATTERY, DISCONNECTING AND CONNECTING .

Remove fuse panel C on the left side of the instrument panel. Refer to FUSE PANEL C, WITH LEFT INSTRUMENT PANEL FUSE PANEL .

Note. Remove the driver side top instrument panel cover if necessary Removal and Installation .

Unlock the release and remove from the fuse carrier, if equipped.

Remove the fuses from the fuse panel.

Release retaining clips -arrows- and remove the cover from the fuse panel.

Remove connector retaining strip -1- -arrow- and remove connectors from plug-in socket.

Note. Check the exact assignment for left instrument panel fuse panel in the applicable wiring diagram. Refer to the appropriate SYSTEM WIRING DIAGRAMS information.

Installing

Install in reverse order of removal, observing the following

Install fuse panel C on the left side of the instrument panel. Refer to FUSE PANEL C, WITH LEFT INSTRUMENT PANEL FUSE PANEL .

Connect the battery. Required actions, refer to BATTERY, DISCONNECTING AND CONNECTING .

PASSENGER SIDE A-PILLAR 6 PIN CONNECTOR STATION

Removing

Scheme 160

With the ignition turned off, disconnect the battery ground cable. Refer to BATTERY, DISCONNECTING AND CONNECTING .

Remove the right lower trim on the A-pillar. Refer to Removal and Installation .

Press the retaining clip in the -direction of the arrow- and disengage the connector station -1- at the A-pillar.

Unclip the fuse panel -2- at the connector station.

Disconnect the airbag connector -2- if applicable. Refer to Removal and Installation .

Remove the relay and control modules.

Release the retaining clips -arrows- and press the relay carrier -2- back and out of the bracket -1-.

Note. For the exact assignment of the passenger side A-pillar 6 pin connector station, see the applicable wiring diagram. Refer to the appropriate SYSTEM WIRING DIAGRAMS information.

Installing

Install in reverse order of removal, observing the following

Connect the airbag connector. Refer to Removal and Installation .

Install the right lower trim on the A-pillar. Refer to Removal and Installation .

Connect the battery. Required actions, refer to BATTERY, DISCONNECTING AND CONNECTING .

RELAY/FUSE PANEL MOUNT WITH VEHICLE ELECTRICAL SYSTEM CONTROL MODULE

Removing

Scheme 161

Remove the left instrument panel vent. Refer to Removal and Installation .

Remove the bolt -arrow- on the air duct -1-.

Note. It is not necessary to remove the air duct.

Remove the vehicle electrical system control module -J519-. Refer to VEHICLE ELECTRICAL SYSTEM CONTROL MODULE -J519 .

Scheme 162

Insert a socket on an extension between the air duct -3- and the central tube -4- and remove the nut -2-.

Remove the nut -5- using the socket on the extension -6- as illustrated.

Remove the mount from the threaded pins.

Disengage the retaining pins -1- on the mount at the side guide in the A-pillar -arrow- while pulling the mount toward the passenger compartment.

Installing

Scheme 163

Install in reverse order of removal, observing the following

1. Tightening specification, refer to «RELAY CARRIER AND FUSE PANEL IN INSTRUMENT PANEL AND A-PILLAR OVERVIEW»(/audi/a4/b8-2007-2012/remont/wiring-system-data-link-connectors-pwr-dist-grnd-dist/#wiring-avant__relay-carrier-and-fuse-panel-in) .

Engage the retaining pins -1- on the mount -3- at the side guide in the A-pillar -arrow-.

Tighten the nut -2-.

Install the air duct to the left instrument panel vent. Refer to Removal and Installation .

Install the left instrument panel vents. Refer to Removal and Installation .

RIGHT INSTRUMENT PANEL FUSE PANEL

Removing

With the ignition turned off, disconnect the battery ground cable. Refer to BATTERY, DISCONNECTING AND CONNECTING .

Remove the glove compartment. Refer to Removal and Installation .

Release retaining clips -1- in the -direction of the arrow- and press the fuse panels -2- and -3- back and out of the fuse panel D.

Note. Ignore item -4-.

Unlock the release and remove from the fuse carrier, if equipped.

Remove the fuses from the fuse panel.

Release retaining clips -arrows- and remove the cover from the fuse panel.

Remove the connector retaining strip -1- -arrow- and remove connectors from plug-in socket.

Note. The exact assignment of the right instrument panel fuse panel can be found in the applicable wiring diagram. Refer to the appropriate SYSTEM WIRING DIAGRAMS information.

Installing

Install in reverse order of removal, observing the following

Install the glove compartment. Refer to Removal and Installation .

Connect the battery. Required actions, refer to BATTERY, DISCONNECTING AND CONNECTING .

VEHICLE ELECTRICAL SYSTEM CONTROL MODULE -J519

If the control module was replaced, select the "Replace" function for the respective control module in "Guided Fault Finding" or "Guided Functions" using the Vehicle Diagnostic Tester.

Removing

Turn off the ignition and remove the ignition key.

Remove the driver side instrument panel cover. Refer to Removal and Installation .

Disengage the 3 pin relay/fuse panel by pressing the retaining springs in the -direction of the arrow- and remove the relay/fuse panel -1-.

Remove the electrical wire -1- on the 4 pin relay/fuse panel.

Release the retaining spring -arrow A- and tilt the relay/fuse panel -3- out of the mount -arrow B-.

Note. Ignore item -2-.

Release the retaining spring -arrow- and remove the vehicle electrical system control module -J519- -item 1- downward from the mount.

Scheme 164

Disconnect the electrical connectors -2, 5, 6, 7 and 8-.

Disconnect the electrical connectors -3 and 4-.

To disconnect the electrical connector, press the catch -1-, rotate the retaining bracket in the -direction of the arrow- and remove the connector.

Scheme 165

Installing

Install in reverse order of removal, observing the following

1. Tightening specification, refer to «4 PIN RELAY/FUSE PANEL WITH THREADED CONNECTION NUT TIGHTENING SPECIFICATIONS»(/audi/a4/b8-2007-2012/remont/wiring-system-data-link-connectors-pwr-dist-grnd-dist/#wiring-avant) .

Install the driver side instrument panel cover. Refer to Removal and Installation .

COMFORT SYSTEM CENTRAL CONTROL MODULE -J393

If the control module was replaced, select the "Replace" function for the respective control module in "Guided Fault Finding" or "Guided Functions" using the Vehicle Diagnostic Tester.

Removing

Scheme 166

Open the luggage compartment right side trim.

Release the retaining clips -arrows- and remove the comfort system central control module -J393- -item 7- from the retaining frame.

Carefully disconnect the connector -4- and -6- and the antenna connector -3-.

Disconnect the connectors -1, 2 and 5-.

To disconnect electrical connector, press catch -1-, turn retaining bracket in -direction of arrow- and remove connector.

Remove the comfort system central control module.

Installing

Install in reverse order.

FUSE PANEL F, RIGHT LUGGAGE COMPARTMENT

Removing

With the ignition turned off, disconnect the battery ground cable. Refer to BATTERY, DISCONNECTING AND CONNECTING .

Open the right luggage compartment side trim cover.

Release the retaining clips -3- in the -direction of the arrow- and press the fuse panel -2- back and out of the fuse panel F.

Remove the nut -4-.

Remove the fuse panel F -1- from of the body.

Unclip fuse panel on relay carrier.

Remove the relay -5- and control modules.

Release the retaining clips -arrows- and press the relay carrier -2- back and out of the bracket -1-.

Open the cable ties and remove fuse panel F.

Note. For exact assignment of fuse panel F in right luggage compartment, refer to current wiring diagram. Refer to the appropriate SYSTEM WIRING DIAGRAMS information.

Installing

Scheme 167

1. Tightening specification, refer to «FUSE PANEL F NUT TIGHTENING SPECIFICATIONS»(/audi/a4/b8-2007-2012/remont/wiring-system-data-link-connectors-pwr-dist-grnd-dist/#wiring-avant) .

Install in reverse order of removal, observing the following

Install fuse panel F -1-. Make sure the guides -2- fit correctly into the mount -arrows-.

Connect the battery. Required actions, refer to BATTERY, DISCONNECTING AND CONNECTING .

FUSE PANEL. RIGHT LUGGAGE COMPARTMENT

Removing

With the ignition turned off, disconnect the battery ground cable. Refer to BATTERY, DISCONNECTING AND CONNECTING .

Remove fuse panel F inside the luggage compartment on the right side. Refer to FUSE PANEL F, RIGHT LUGGAGE COMPARTMENT .

Note. The relay and fuse panels remain clipped in.

Unlock the release and remove from the fuse carrier, if equipped.

Remove the fuses from the fuse panel.

Release retaining clips -arrows- and remove the cover from the fuse panel.

Pull off the retaining strip -1- for harness connectors -arrow- and remove harness connectors from connector socket.

Note. For the exact assignment of the fuse panel in the right of the luggage compartment, see the applicable wiring diagram. Refer to the appropriate SYSTEM WIRING DIAGRAMS information.

Installing

Install in reverse order of removal, observing the following

Install fuse panel F. Refer to FUSE PANEL. RIGHT LUGGAGE COMPARTMENT .

Connect the battery. Required actions, refer to BATTERY, DISCONNECTING AND CONNECTING .

SPECIAL PURPOSE VEHICLE CONTROL MODULE

Removing

With the ignition turned off, disconnect the battery ground cable. Refer to BATTERY, DISCONNECTING AND CONNECTING .

Open the right luggage compartment side trim cover.

Remove the nuts -arrows- and lay aside the retaining frame -1- with the comfort system central control module -J393-.

Release the retaining clips -arrows- and tilt the electronic damping control module -J250- -item 1- out of the retaining frame.

Scheme 168

Remove the bolts -1 and 2- and the nut -4-.

Tilt the retaining frame -3- with control modules to the side.

Disconnect the electrical connectors at the control modules in the retaining frame.

Remove the retaining frame with control modules.

Press the retaining clip -1- in the -direction of arrow A- and tilt the special purpose vehicle control module -J608- -item 2- in the -direction of the arrow B- out of the retaining frame -3-.

Scheme 169

Installing

1. Tightening specifications, refer to «SPECIAL PURPOSE VEHICLE CONTROL MODULE RETAINING FRAME BOLT/NUT TIGHTENING SPECIFICATIONS»(/audi/a4/b8-2007-2012/remont/wiring-system-data-link-connectors-pwr-dist-grnd-dist/#wiring-avant) and to «COMFORT SYSTEM CENTRAL CONTROL MODULE RETAINING FRAME NUT TIGHTENING SPECIFICATIONS»(/audi/a4/b8-2007-2012/remont/wiring-system-data-link-connectors-pwr-dist-grnd-dist/#wiring-avant) .

Install in reverse order of removal, observing the following

Connect the battery. Required actions, refer to BATTERY, DISCONNECTING AND CONNECTING .

SPECIAL TOOLS

Special tools and workshop equipment required

Scheme 170

1. Removal Wedge 3409

See also:
• General Information
• Description and Operation
• PARKING AID OVERVIEW
• TOWING RECOGNITION CONTROL MODULE
• Removal and Installation
• Description and Operation
• Removal and Installation
• Removal and Installation
• BATTERY, DISCONNECTING AND CONNECTING
• WASHER FLUID RESERVOIR FILLER NECK
• WIPER MOTOR WITH WIPER MOTOR CONTROL MODULE
• ALARM HORN
• BATTERY => Installing
• Removal and Installation
• Removal and Installation
• Removal and Installation
• CONTACT CORROSION
• ENGINE COMPARTMENT E-BOX
• ENGINE COMPARTMENT E-BOX BOLT TIGHTENING SPECIFICATION
• FUSE PANEL B, ENGINE COMPARTMENT E-BOX
• SUPPRESSOR
• TERMINAL 30 WIRE JUNCTION 2
• DOOR CUT-OFF CONNECTOR, DISCONNECTING
• FUSE PANEL A, LUGGAGE COMPARTMENT
• VEHICLE ELECTRICAL SYSTEM CONTROL MODULE -J519
• RELAY/FUSE PANEL MOUNT WITH VEHICLE ELECTRICAL SYSTEM CONTROL MODULE
• PASSENGER SIDE A-PILLAR 6 PIN CONNECTOR STATION
• FUSE PANEL D, WITH RIGHT INSTRUMENT PANEL FUSE PANEL
• INSTRUMENT PANEL CAN CUT-OFF CONNECTOR
• FUSE PANEL C, WITH LEFT INSTRUMENT PANEL FUSE PANEL
• INTERIOR CAN CUT-OFF CONNECTOR
• DRIVER SIDE A-PILLAR 6 PIN CONNECTOR STATION
• 3 PIN RELAY/FUSE PANEL
• 4 PIN RELAY/FUSE PANEL, WITH THREADED CONNECTION
• FUSE PANEL. RIGHT LUGGAGE COMPARTMENT
• COMFORT SYSTEM CENTRAL CONTROL MODULE -J393
• SPECIAL PURPOSE VEHICLE CONTROL MODULE
• ENGINE COMPARTMENT E-BOX, WIRE JUNCTION, FUSE HOLDER AND BATTERY OVERVIEW => Engine Compartment E-Box Bolt Tightening Specification
• INTERIOR CAN CUT-OFF CONNECTOR MOUNT
• INSTRUMENT PANEL CAN CUT-OFF CONNECTOR MOUNT
• RELAY CARRIER AND FUSE PANEL IN INSTRUMENT PANEL AND A-PILLAR OVERVIEW
• FUSE PANEL F, RIGHT LUGGAGE COMPARTMENT