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 (5 SPD. Manual Transmission 02J (A4 Platform)) Different car Section 1 (1.8L - Engine Mechanical - 4-CYL. 5V Turbo - AWD, AWW, AWP (A4 Platform)) Section 2 (1.8L - Cooling System - AWD, AWW, AWP (A4 Platform)) Section 3 (1.9L - Engine Mechanical - ALH (A4 Platform)) Section 4 (1.9L - Cooling System - ALH (A4 Platform)) Section 5 (1.9L - Turbocharger, G-Charger - ALH (A4 Platform)) Section 6 (1.9L - Exhaust System, Emission Controls - ALH (A4 Platform)) Section 7 (5 SPD. Manual Transmission 020 (A3 Platform)) Section 8 (5 SPD. Manual Transmission 02A (A3 Platform)) Section 9 (4 SPD. Automatic Transmission 01M (A3 Platform)) Section 10 (4 SPD. Automatic Transmission 01M On Board Diagnostic (A3 Platform)) Section 11 (4 SPD. Automatic Transmission 096 (A3 Platform)) Section 12 (Wheels, Tires, Wheel Alignment (A3 Platform)) Section 13 (Brakes - Hydraulic Components (A3 Platform)) Section 14 (Steering (A3 Platform)) Section 15 (Body - Front (A3 Platform)) Section 16 (Hood, Lids (A3 Platform)) Section 17 (Front Doors, Central Locking System (A3 Platform)) Section 18 (Bumpers (A3 Platform)) Section 19 (Glass, Window Regulators (A3 Platform)) Section 20 (Exterior Equipment (A3 Platform)) Section 21 (Interior Equipment (A3 Platform)) Section 22 (Passenger Protection - Airbags, Seat Belts (A3 Platform)) Section 23 (Interior Trim (A3 Platform)) Section 24 (Seats - Frames (A3 Platform)) Section 25 (Body - Front) Section 26 (Hood, Lids) Section 27 (Bumpers) Section 28 (Exterior Equipment) Section 29 (Interior Trim) Section 30 (Seats - Frames) Section 31 (SRS - Body On Board Diagnostic (OBD) (A3 Platform)) Section 32 (Heating & Air Conditioning (A3 Platform)) Section 33 (On Board Diagnostic (OBD) (A3 Platform)) Section 34 (Battery, Starter, Generator, Cruise Control (A3 Platform)) Section 35 (Instruments (A3 Platform)) Section 36 (Radio, Telephone, Navigation, Trip Computer (A3 Platform)) Section 37 (Windshield Wiper &Washer System (A3 Platform)) Section 38 (Lights, Switches - Exterior (A3 Platform)) Section 39 (Lights, Switches - Interior, Anti-Theft (A3 Platform)) Section 40 (Maintenance (A3 Platform)) Section 41 (1.9L TDI Engine Mechanical - AAZ, 1Z, AHU (A3 Platform)) Section 42 (Engine Cooling System - 1.9L 4-CYL. 2V TDI - AAZ, 1Z, AHU (A3 Platform)) Section 43 (Fuel Supply - 1.9L 4-CYL. 2V TDI - AAZ, 1Z, AHU (A3 Platform)) Section 44 (Turbocharger, G-Charger - 1.9L TDI - AAZ, 1Z, AHU (A3 Platform)) Section 45 (Exhaust System, Emission Controls - 1.9L 4-CYL. 2V TDI - AAZ, 1Z, AHU (A3 Platform)) Section 46 (2.0L Engine Mechanical - Aba (A3 Platform)) Section 47 (2.0L Engine Cooling System - Aba (A3 Platform)) Section 48 (2.0L Fuel Supply - Aba (A3 Platform)) Section 49 (2.0L Exhaust System, Emission Controls - Aba (A3 Platform)) Section 50 (2.8L VR6 2V Engine Mechanical - AAA (A3 Platform)) Section 51 (Engine Cooling System - 2.8 L VR6 2V - AAA (A3 Platform)) Section 52 (Fuel Supply - 2.8 L VR6 2V - AAA (A3 Platform)) Section 53 (Exhaust System, Emission Controls - 2.8L VR6 2V - AAA (A3 Platform)) Section 54 (Diesel Fuel Injection - 1.9L, AAZ (ECO Diesel)) Section 55 (Ignition-Glow Plug System - 1.9L, AAZ (ECO Diesel) (A3 Platform)) Section 56 (On Board Diagnostic (OBD) - 1.9L TDI, 1Z & AHU (A3 Platform)) Section 57 (Diesel Fuel Injection - 1.9L TDI, 1Z & AHU (A3 Platform)) Section 58 (Ignition-Glow Plug System - 1.9L TDI, 1Z & AHU (A3 Platform)) Section 59 (2.0L On Board Diagnostic (OBD) - Aba (A3 Platform)) Section 60 (2.0L MULTIPORT Fuel Injection (MFI) - Aba (A3 Platform)) Section 61 (2.0L Ignition/Glow Plug System - Aba (A3 Platform)) Section 62 (On Board Diagnostic (OBD) - 2.0L 4-CYL. 2V - Aba) Section 63 (MULTIPORT Fuel Injection (MFI) - 2.0L 4-CYL. 2V - Aba) Section 64 (Ignition-Glow Plug System - 2.0L 4-CYL. 2V - Aba) Section 65 (On Board Diagnostic (OBD) - 2.0L, Aba (A3 Platform)) Section 66 (MULTIPORT Fuel Injection (MFI) - 2.0L, Aba (A3 Platform)) Section 67 (Ignition-Glow Plug System - 2.0L, Aba (A3 Platform) (A3 Platform)) Section 68 (On Board Diagnostic (OBD) - 2.8L VR6, AAA) Section 69 (MULTIPORT Fuel Injection (MFI) - 2.8L VR6, AAA) Section 70 (Ignition-Glow Plug System - 2.8L VR6, AAA) Section 71 (On Board Diagnostic (OBD) - 2.8L VR6, AAA (A3 Platform)) Section 72 (MULTIPORT Fuel Injection (MFI) - 2.8 L VR6 2V - AAA (A3 Platform)) Section 73 (Ignition/Glow Plug System - 2.8 L VR6 2V - AAA (A3 Platform)) Section 74 (Battery Troubleshooting (A3 Platform)) Section 75 (Generator Troubleshooting (A3 Platform)) Section 76 (Multi-Function Indicator Troubleshooting (A3 Platform)) Section 77 (Glow Plug System Troubleshooting - 1.9L - AAZ (CANADA Only)) 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 (1.8L - On Board Diagnostic (OBD) - AWW, AWP (A4 Platform)) Section 82 (1.8L - MULTIPORT Fuel Injection (MFI) - AWW, AWP (A4 Platform)) Section 83 (1.8L - Ignition/Glow Plug System - AWW, AWP (A4 Platform)) Section 84 (1.8L - Fuel Supply - AWD, AWP, AWW (A4 Platform)) Section 85 (1.8L - Turbocharger, G-Charger - AWD, AWP, AWW Generic (A4 Platform)) Section 86 (1.8L - MULTIPORT Fuel Injection (MFI) - AWD, AWP, AWW Generic (A4 Platform)) Section 87 (1.8L - Exhaust System, Emission Controls - AWD, AWP, AWW Generic (A4 Platform)) Section 88 (1.8L - Ignition/Glow Plug System - AWD, AWP, AWW Generic (A4 Platform)) Section 89 (1.8L - On Board Diagnostic (OBD), Generic Scan Tool - AWD, AWP, AWW) Section 90 (On Board Diagnostic (OBD) - 1.9L ALH, 2V TDI) Section 91 (1.9L - Diesel Fuel Injection - ALH (A4 Platform)) Section 92 (1.9L - Ignition/Glow Plug System - ALH (A4 Platform)) Section 93 (On Board Diagnostic (OBD) - 1.9L ALH, 2V TDI) Section 94 (1.9L - Diesel Fuel Injection - ALH, 2V TDI (A4 Platform)) Section 95 (1.9L - Ignition/Glow Plug System - ALH, 2V TDI (A4 Platform)) Section 96 (1.9L - Fuel Supply - ALH, BEW (Generic Scan Tool) (A4 Platform)) Section 97 (1.9L - Turbocharger, G-Charger - ALH, BEW (Generic Scan Tool) (A4 Platform)) Section 98 (1.9L - Diesel Fuel Injection - TDI, ALH, BEW (Generic Scan Tool) (A4 Platform)) Section 99 (1.9L - Exhaust System, Emission Controls - ALH, BEW (Generic Scan Tool) (A4 Platform)) Section 100 (1.9L - Ignition/Glow Plug System - ALH, BEW (Generic Scan Tool) (A4 Platform)) Section 101 (On Board Diagnostic (OBD), Generic Scan Tool - 1.9L TDI, ALH, BEW (A4 Platform)) Section 102 (2.0L - MULTIPORT Fuel Injection (MFI) - AEG, AVH, AZG) Section 103 (On Board Diagnostic (OBD), Generic Scan Tool - 2.0L AEG, AVH, AZG) Section 104 (Cabin Air Filter - A5G Platform) Section 105 (1.9L - TDI Engine Mechanical, Fuel Injection Glow Plug, Engine Code(S): BEW (A4 Platform)) Section 106 (3.2L VR6 4V Engine Mechanical, Fuel Injection Ignition, Engine Code(S): BJS) Section 107 (2.8L & 3.2L - Generic Scan Tool, Engine Code(S): AFP, BDF, BJS [A4 Platform] (28 Ignition/Glow Plug System - St Generic Scan Tool)) Section 108 (1.9L - TDI Engine Mechanical - ALH (A4 Platform)) Section 109 (1.8L - Engine Mechanical, Engine Code(S): AWD, AWW, AWP (A4 Platform)) Section 110 (2.8L - Engine Mechanical - AFP (A4 Platform)) Section 111 (2.8L - Engine Mechanical, Engine Code: BDF) Section 112 (1.8L - Fuel Injection & Ignition, Engine Code(S): AWD) Section 113 (1.8L - Fuel Injection Ignition, Engine Code(S)
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.
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