Protected by copyright. Copying for private or commercial purposes, in part or in whole, is not permitted unless authorised by AUDI AG. AUDI AG does not guarantee or accept any liability with respect to the correctness of information in this document. Copyright by AUDI AG. Basic Equipment Lowline From 2003 m. y. Main fuse A97--0220 ♦ on the Battery Fuse holder A97--0242 23 22 21 20 19 18 17 16 15 14 13 12 11 10 9 8 7 6 5 3 4 1 2 44 43 42 41 40 37 39 38 36 35 34 33 32 31 30 29 28 27 26 25 24 Res Res Res Res Res Audi A4 Wiring Diagram No. 3 / 1 12.2005
Protected by copyright. Copying for private or commercial purposes, in part or in whole, is not permitted unless authorised by AUDI AG. AUDI AG does not guarantee or accept any liability with respect to the correctness of information in this document. Copyright by AUDI AG. ♦ Instrument panel driver side Fuse Colors 30 A - Green 25 A - Withe 20 A - Yellow 15 A - Blue 10 A - Red 7,5 A - Brown 5 A - Beige Note: ♦ Fuse in fusebox from 23 onwards are numbered 223 onwards in Current Flow Diagram. Coupling station with threaded connection A97--0248 5 6 7 1 2 3 4 ♦ in the electronics box, plenum chamber 1 - 10-Pin Connector, black (T10) 2 - 10-Pin Connector, brown (T10a) 3 - 17-Pin Connector, red (T17d) 6 - 17-Pin Connector, white (T17e) Audi A4 Wiring Diagram No. 3 / 1 12.2005
Protected by copyright. Copying for private or commercial purposes, in part or in whole, is not permitted unless authorised by AUDI AG. AUDI AG does not guarantee or accept any liability with respect to the correctness of information in this document. Copyright by AUDI AG. Connector station A-pillar A97--0247 8 11 12 13 14 2 3 4 5 6 7 10 9 16 15 17 A B 1 ♦ behind side trim, left 13 - 10-Pin Connector, violet (T10c) 14 - 10-Pin Connector, grey (T10d) 15 - 17-Pin Connector, green (T17b) 16 - 17-Pin Connector, red (T17a) 17 - 17-Pin Connector, black (T17) Audi A4 Wiring Diagram No. 3 / 1 12.2005
Protected by copyright. Copying for private or commercial purposes, in part or in whole, is not permitted unless authorised by AUDI AG. AUDI AG does not guarantee or accept any liability with respect to the correctness of information in this document. Copyright by AUDI AG. Connector station A-pillar A97--0400 8 11 12 13 14 2 3 4 5 6 7 10 9 16 15 17 A B 1 C E D F ♦ behind side trim, right 15 - 17-Pin Connector, red (T17c) 4-Pin Relay Carrier with threaded connection A97--0245 1 2 3 4 C B G E F A D H ♦ Instrument panel driver side Audi A4 Wiring Diagram No. 3 / 1 12.2005
Protected by copyright. Copying for private or commercial purposes, in part or in whole, is not permitted unless authorised by AUDI AG. AUDI AG does not guarantee or accept any liability with respect to the correctness of information in this document. Copyright by AUDI AG. 9-Pin Relay Carrier with Vehicle Electrical System Control Module A97--0399 8 9 7 A 1 B 2 3 4 5 6 C D E F G ♦ Instrument panel driver side, behind 3-Pin Relay Carrier 3 - Horn Relay (J4) 6 - Load Reduction Relay (J59) Audi A4 Wiring Diagram No. 3 / 1 12.2005
Protected by copyright. Copying for private or commercial purposes, in part or in whole, is not permitted unless authorised by AUDI AG. AUDI AG does not guarantee or accept any liability with respect to the correctness of information in this document. Copyright by AUDI AG. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 97--58978 3 35,0 sw 179 345 T4k/4 2,5 br 2,5 br 83 12 4,0 br 26 179 6,0 br 86 50 6,0 br 78 249 6,0 br 249 78 2,5 br ws = white sw = black ro = red br = brown gn = green bl = blue gr = grey li = lilac ge = yellow or = orange rs = pink Ground connections T4k 4-Pin Connector, black, near front bumper 3 Ground strap, engine to body 12 Ground connection, in engine compartment, left 26 Ground connection, on front apron 50 Ground connection, in luggage compartment, left 78 Ground Connection (lower right B-pillar) 83 Ground connection -1-, in right front wiring harness 86 Ground connection -1-, in rear wiring harness 179 Ground connection, in left headlight wiring harness 249 Ground connection -2-, in wiring harness interior 345 Ground connection (in bumper wiring harness), Fanfare/Fog light Audi A4 Wiring Diagram No. 3 / 2 12.2005
Protected by copyright. Copying for private or commercial purposes, in part or in whole, is not permitted unless authorised by AUDI AG. AUDI AG does not guarantee or accept any liability with respect to the correctness of information in this document. Copyright by AUDI AG. 15 16 17 18 19 20 21 22 23 24 25 26 27 28 32 6,0 br 44 81 6,0 br 49 238 6,0 br 33 135 6,0 br 33 261 135 T10c /1 1,5 br 43 176 97--58975 277 6,0 br 77 2,5 br 2,5 br ws = white sw = black ro = red br = brown gn = green bl = blue gr = grey li = lilac ge = yellow or = orange rs = pink Ground connections T10c 10-Pin Connector, violet, connector station A-pillar, left 32 Ground connection, behind instrument panel, left 33 Ground connection, behind instrument panel, right 43 Ground connection (lower right A-pillar) 44 Ground connection (lower left A-pillar) 49 Ground connection, near Central control module for comfort system 77 Ground Connection (lower left B-pillar) 81 Ground connection -1-, in instrument panel wiring harness 135 Ground connection -2-, in instrument panel wiring harness 176 Ground connection, in right headlight wiring harness 238 Ground connection -1-, in wiring harness interior 261 Ground connection, in wiring harness heated spray jet 277 Ground connector -3-, in wiring harness interior Audi A4 Wiring Diagram No. 3 / 3 12.2005
Protected by copyright. Copying for private or commercial purposes, in part or in whole, is not permitted unless authorised by AUDI AG. AUDI AG does not guarantee or accept any liability with respect to the correctness of information in this document. Copyright by AUDI AG. 29 30 31 32 33 34 35 36 37 38 39 40 41 42 97--57338 2/75 4/P 8/86s D 3/30 7/30 0,5 ro 0,35 gr/ge 2,5 ro 1/50 2,5 ro 6/15 4,0 sw 01 0123 6,0 ro 2,5 ro 2,5 ro 0,35 bl 0,5 ge/sw 1,0 ge/sw A32 A21 A33 a c d e 11 -- A + 35,0 br 501 b 235 0,22 ro 218 B 5/50b 2,5 ro/sw 2,5 sw T10a/4 2,5 ro/sw 6,0 ro 6,0 ro 6,0 ro 222 162 193 81 82 213 1,0 ge/sw A2 241 4,0 sw 155 0,22 ge/sw S 88 150A 16,0 ro 500 0,35 sw 6,0 ro 162 193 222 81 82 155 213 218 241 235 ws = white sw = black ro = red br = brown gn = green bl = blue gr = grey li = lilac ge = yellow or = orange rs = pink Ignition/Starter Switch, main fuse A Battery B Starter D Ignition/Starter Switch S88 Fuse Strip (main fuse) T10a 10-Pin Connector, brown, connector station E-box, plenum chamber 11 Ground connection, in battery box 500 Threaded connection -1- (30), on the relay plate 501 Threaded connection -2- (30), on the relay plate A2 Plus connection (15), in instrument panel wiring harness A21 Wire connection (86s), in instrument panel wiring harness A32 Plus connection (30), in instrument panel wiring harness A33 Wire connection (75), in instrument panel wiring harness * Heated spray jet only ** see applicable engine wiring diagram Audi A4 Wiring Diagram No. 3 / 4 12.2005
Protected by copyright. Copying for private or commercial purposes, in part or in whole, is not permitted unless authorised by AUDI AG. AUDI AG does not guarantee or accept any liability with respect to the correctness of information in this document. Copyright by AUDI AG. 43 44 45 46 47 48 49 50 51 52 53 54 97--53355 55 56 E 45 1,0 br 1,0 ro/ge A21 T16a/15 0,35 gr/ge 0,35 bl 0,5 ge/sw T16a/12 T16a/16 T16a/1 T16a/2 0,22 ro T16a/14 A2 0,5 sw T16a/13 J 527 135 0,22 bl/gn T16a/5 J... T17e/10 0,35 bl/gn 170 a c d e b 170 ws = white sw = black ro = red br = brown gn = green bl = blue gr = grey li = lilac ge = yellow or = orange rs = pink Steering Column Electronic Systems Control Module, Cruise Control Switch E45 Cruise Control Switch J... Engine Control Module (ECM) J527 Steering Column Electronic Systems Control Module T16a 16-Pin Connector, black, on steering Column Electronic Systems Control Module T17e 17-Pin Connector, white, connector station E-box, plenum chamber 135 Ground connection -2-, in instrument panel wiring harness A2 Plus connection (15), in instrument panel wiring harness A21 Wire connection (86s), in instrument panel wiring harness Audi A4 Wiring Diagram No. 3 / 5 12.2005
Protected by copyright. Copying for private or commercial purposes, in part or in whole, is not permitted unless authorised by AUDI AG. AUDI AG does not guarantee or accept any liability with respect to the correctness of information in this document. Copyright by AUDI AG. 57 58 59 60 61 62 63 64 65 66 67 68 97--52790 69 70 E 2 E 22 G85 H J 527 ws = white sw = black ro = red br = brown gn = green bl = blue gr = grey li = lilac ge = yellow or = orange rs = pink Turn signal switch, Windshield Wiper/Washer Switch, Steering Angle Sensor, Signal horn activation, Steering Column Electronic Systems Control Module E2 Turn signal switch E22 Windshield Wiper/Washer Switch G85 Steering Angle Sensor H Signal horn activation J527 Steering Column Electronic Systems Control Module Audi A4 Wiring Diagram No. 3 / 6 12.2005
The 2000-2008 Audi A4 (B6/B7) Service & Repair Manual is the official OEM documentation used by Audi dealership technicians to service and repair A4 models from both the B6 and B7 generations. Covering sedans, Avants, and cabriolets, this manual provides detailed procedures and specifications tailored to each supported engine and body style.
This manual includes OEM procedures for mechanical servicing, diagnostics, and component replacement. It’s perfect for experienced DIYers and independent repair professionals looking for authentic reference material with accurate step-by-step instructions and technical tolerances.
What’s Inside the 2000-2008 Audi A4 Service & Repair Manual
Engine Mechanical
Complete factory teardown and rebuild procedures for all supported engines, including turbocharged inline-4s, naturally aspirated and FSI V6s, and high-performance V8s. Includes torque specs, timing setup, cylinder head servicing, and ancillary component replacement.
Transmission & Drivetrain
OEM repair procedures for manual and automatic transmissions, clutch systems, differentials, and driveshaft service. Includes installation and removal steps, component checks, and calibration information.
Suspension & Steering
Service instructions for MacPherson front suspension, rear multi-link systems, bushings, ball joints, control arms, and rack-and-pinion steering setups. Alignment specs and geometry references are also provided.
Brakes & ABS Systems
Factory procedures for disc brake replacement, master cylinder service, ABS module diagnostics, parking brake adjustments, and hydraulic system bleeding.
HVAC & Interior Systems
Repair steps for heating and air conditioning systems, blower motors, heater cores, as well as interior trim removal and comfort features including power seats, windows, and locks.
Body & Exterior Components
Panel removal and refitting procedures, convertible top service, door and mirror servicing, lighting systems, and bumper installation.
Service Intervals & Technical Specifications
Maintenance charts, fluid types and capacities, torque settings, and component wear limits for accurate and timely service work.
Why Choose This Audi A4 Service Manual?
This is the same official OEM repair manual trusted by Audi dealerships worldwide. It ensures accuracy and factory-level detail across every system, from engine internals to climate control modules. Ideal for those working on everything from routine maintenance to full engine rebuilds.
Format & Compatibility
Delivered as a high-resolution, fully searchable PDF. Works on Windows, macOS, Linux, iOS, and Android. Suitable for laptops, tablets, phones or printed use in the garage.
Download the 2000-2008 Audi A4 (B6/B7) Repair Manual Now
Whether you're troubleshooting an engine issue, replacing suspension components, or servicing the drivetrain, this manual provides the OEM precision and reliability required for professional repair results.
Language: English Compatibility: Windows, macOS, Linux, iOS, Android Requirements: PDF Reader (e.g., Adobe Reader)
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