Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
External Pages
's manual. Be very cautious using repair info from here because these pages may not apply to your vehicle. Different variant/trim Section 1 (CLUTCHES - 02J (A4 PlLATFORM)) Section 2 (1.8L - Engine Mechanical - 4-CYL. 5V Turbo - AWD, AWW, AWP (A4 Platform)) Section 3 (1.8L - Cooling System - AWD, AWW, AWP (A4 Platform)) Section 4 (1.8L - On Board Diagnostic (OBD) - AWW, AWP (A4 Platform)) Section 5 (1.8L - MULTIPORT Fuel Injection (MFI) - AWW, AWP (A4 Platform)) Section 6 (1.8L - Ignition/Glow Plug System - AWW, AWP (A4 Platform)) Section 7 (1.8L - Fuel Supply - AWD, AWP, AWW (A4 Platform)) Section 8 (1.8L - Turbocharger, G-Charger - AWD, AWP, AWW Generic (A4 Platform)) Section 9 (1.8L - MULTIPORT Fuel Injection (MFI) - AWD, AWP, AWW Generic (A4 Platform)) Section 10 (1.8L - Exhaust System, Emission Controls - AWD, AWP, AWW Generic (A4 Platform)) Section 11 (1.8L - Ignition/Glow Plug System - AWD, AWP, AWW Generic (A4 Platform)) Section 12 (1.8L - On Board Diagnostic (OBD), Generic Scan Tool - AWD, AWP, AWW) Section 13 (1.8L - Engine Mechanical, Engine Code(S): AWD, AWW, AWP (A4 Platform)) Section 14 (1.8L - Fuel Injection Ignition, Engine Code(S): AWW, AWP (A4 Platform)) Section 15 (1.8L - Generic Scan Tool, Engine Code(S): AWP, AWW, AWD (A4 Platform)) Section 16 (5 SPD. Manual Transmission 02J (A4 Platform)) Section 17 (5 SPD. Automatic Transmission 09A On Board Diagnostic (OBD)) Section 18 (5 SPD. Automatic Transmission 09A) Different car Section 1 (1.9L - Engine Mechanical - ALH (A4 Platform)) Section 2 (1.9L - Cooling System - ALH (A4 Platform)) Section 3 (1.9L - Turbocharger, G-Charger - ALH (A4 Platform)) Section 4 (1.9L - Exhaust System, Emission Controls - ALH (A4 Platform)) Section 5 (On Board Diagnostic (OBD) (From Late Production 1999) (A4 Platform)) Section 6 (5 SPD. Manual Transmission 020 (A3 Platform)) Section 7 (5 SPD. Manual Transmission 02A (A3 Platform)) Section 8 (4 SPD. Automatic Transmission 01M (A3 Platform)) Section 9 (4 SPD. Automatic Transmission 01M On Board Diagnostic (A3 Platform)) Section 10 (4 SPD. Automatic Transmission 096 (A3 Platform)) Section 11 (Wheels, Tires, Wheel Alignment (A3 Platform)) Section 12 (Brakes - Hydraulic Components (A3 Platform)) Section 13 (Steering (A3 Platform)) Section 14 (Body - Front (A3 Platform)) Section 15 (Hood, Lids (A3 Platform)) Section 16 (Front Doors, Central Locking System (A3 Platform)) Section 17 (Bumpers (A3 Platform)) Section 18 (Glass, Window Regulators (A3 Platform)) Section 19 (Exterior Equipment (A3 Platform)) Section 20 (Interior Equipment (A3 Platform)) Section 21 (Passenger Protection - Airbags, Seat Belts (A3 Platform)) Section 22 (Interior Trim (A3 Platform)) Section 23 (Seats - Frames (A3 Platform)) Section 24 (Body - Front) Section 25 (Hood, Lids) Section 26 (Bumpers) Section 27 (Exterior Equipment) Section 28 (Interior Trim) Section 29 (Seats - Frames) Section 30 (SRS - Body On Board Diagnostic (OBD) (A3 Platform)) Section 31 (Heating & Air Conditioning (A3 Platform)) Section 32 (On Board Diagnostic (OBD) (A3 Platform)) Section 33 (Battery, Starter, Generator, Cruise Control (A3 Platform)) Section 34 (Instruments (A3 Platform)) Section 35 (Radio, Telephone, Navigation, Trip Computer (A3 Platform)) Section 36 (Windshield Wiper &Washer System (A3 Platform)) Section 37 (Lights, Switches - Exterior (A3 Platform)) Section 38 (Lights, Switches - Interior, Anti-Theft (A3 Platform)) Section 39 (Maintenance (A3 Platform)) Section 40 (1.9L TDI Engine Mechanical - AAZ, 1Z, AHU (A3 Platform)) Section 41 (Engine Cooling System - 1.9L 4-CYL. 2V TDI - AAZ, 1Z, AHU (A3 Platform)) Section 42 (Fuel Supply - 1.9L 4-CYL. 2V TDI - AAZ, 1Z, AHU (A3 Platform)) Section 43 (Turbocharger, G-Charger - 1.9L TDI - AAZ, 1Z, AHU (A3 Platform)) Section 44 (Exhaust System, Emission Controls - 1.9L 4-CYL. 2V TDI - AAZ, 1Z, AHU (A3 Platform)) Section 45 (2.0L Engine Mechanical - Aba (A3 Platform)) Section 46 (2.0L Engine Cooling System - Aba (A3 Platform)) Section 47 (2.0L Fuel Supply - Aba (A3 Platform)) Section 48 (2.0L Exhaust System, Emission Controls - Aba (A3 Platform)) Section 49 (2.8L VR6 2V Engine Mechanical - AAA (A3 Platform)) Section 50 (Engine Cooling System - 2.8 L VR6 2V - AAA (A3 Platform)) Section 51 (Fuel Supply - 2.8 L VR6 2V - AAA (A3 Platform)) Section 52 (Exhaust System, Emission Controls - 2.8L VR6 2V - AAA (A3 Platform)) Section 53 (Diesel Fuel Injection - 1.9L, AAZ (ECO Diesel)) Section 54 (Ignition-Glow Plug System - 1.9L, AAZ (ECO Diesel) (A3 Platform)) Section 55 (On Board Diagnostic (OBD) - 1.9L TDI, 1Z & AHU (A3 Platform)) Section 56 (Diesel Fuel Injection - 1.9L TDI, 1Z & AHU (A3 Platform)) Section 57 (Ignition-Glow Plug System - 1.9L TDI, 1Z & AHU (A3 Platform)) Section 58 (2.0L On Board Diagnostic (OBD) - Aba (A3 Platform)) Section 59 (2.0L MULTIPORT Fuel Injection (MFI) - Aba (A3 Platform)) Section 60 (2.0L Ignition/Glow Plug System - Aba (A3 Platform)) Section 61 (On Board Diagnostic (OBD) - 2.0L 4-CYL. 2V - Aba) Section 62 (MULTIPORT Fuel Injection (MFI) - 2.0L 4-CYL. 2V - Aba) Section 63 (Ignition-Glow Plug System - 2.0L 4-CYL. 2V - Aba) Section 64 (On Board Diagnostic (OBD) - 2.0L, Aba (A3 Platform)) Section 65 (MULTIPORT Fuel Injection (MFI) - 2.0L, Aba (A3 Platform)) Section 66 (Ignition-Glow Plug System - 2.0L, Aba (A3 Platform) (A3 Platform)) Section 67 (On Board Diagnostic (OBD) - 2.8L VR6, AAA) Section 68 (MULTIPORT Fuel Injection (MFI) - 2.8L VR6, AAA) Section 69 (Ignition-Glow Plug System - 2.8L VR6, AAA) Section 70 (On Board Diagnostic (OBD) - 2.8L VR6, AAA (A3 Platform)) Section 71 (MULTIPORT Fuel Injection (MFI) - 2.8 L VR6 2V - AAA (A3 Platform)) Section 72 (Ignition/Glow Plug System - 2.8 L VR6 2V - AAA (A3 Platform)) Section 73 (Battery Troubleshooting (A3 Platform)) Section 74 (Generator Troubleshooting (A3 Platform)) Section 75 (Multi-Function Indicator Troubleshooting (A3 Platform)) Section 76 (Glow Plug System Troubleshooting - 1.9L - AAZ (CANADA Only)) Section 77 (2.8L - Cooling System - AFP (A4 Platform)) Section 78 (On Board Diagnostic (OBD) - 1.8L, AWD (A4 Platform)) Section 79 (1.8L - MULTIPORT Fuel Injection (MFI) - AWD (A4 Platform)) Section 80 (1.8L - Ignition/Glow Plug System - AWD (A4 Platform)) Section 81 (On Board Diagnostic (OBD) - 1.9L ALH, 2V TDI) Section 82 (1.9L - Diesel Fuel Injection - ALH (A4 Platform)) Section 83 (1.9L - Ignition/Glow Plug System - ALH (A4 Platform)) Section 84 (On Board Diagnostic (OBD) - 1.9L ALH, 2V TDI) Section 85 (1.9L - Diesel Fuel Injection - ALH, 2V TDI (A4 Platform)) Section 86 (1.9L - Ignition/Glow Plug System - ALH, 2V TDI (A4 Platform)) Section 87 (1.9L - Fuel Supply - ALH, BEW (Generic Scan Tool) (A4 Platform)) Section 88 (1.9L - Turbocharger, G-Charger - ALH, BEW (Generic Scan Tool) (A4 Platform)) Section 89 (1.9L - Diesel Fuel Injection - TDI, ALH, BEW (Generic Scan Tool) (A4 Platform)) Section 90 (1.9L - Exhaust System, Emission Controls - ALH, BEW (Generic Scan Tool) (A4 Platform)) Section 91 (1.9L - Ignition/Glow Plug System - ALH, BEW (Generic Scan Tool) (A4 Platform)) Section 92 (On Board Diagnostic (OBD), Generic Scan Tool - 1.9L TDI, ALH, BEW (A4 Platform)) Section 93 (2.0L - MULTIPORT Fuel Injection (MFI) - AEG, AVH, AZG) Section 94 (On Board Diagnostic (OBD), Generic Scan Tool - 2.0L AEG, AVH, AZG) Section 95 (Cabin Air Filter - A5G Platform) Section 96 (2.0L - Engine Mechanical - AEG, AVH, AZG, BBW, BEV (A4 Platform)) Section 97 (1.9L - TDI Engine Mechanical, Fuel Injection Glow Plug, Engine Code(S): BEW (A4 Platform)) Section 98 (3.2L VR6 4V Engine Mechanical, Fuel Injection Ignition, Engine
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- β’ You smell fuel, burning insulation, or see smoke.
- β’ Brakes feel soft, pull hard to one side, or make grinding noises.
- β’ The engine overheats, stalls repeatedly, or misfires under load.
- β’ You are missing required tools, torque specs, or safe lifting equipment.
- β’ You are not confident in the next step or safety outcome.
