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 (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 (On Board Diagnostic (OBD) - 1.8L, AWD (A4 Platform)) Section 4 (1.8L - MULTIPORT Fuel Injection (MFI) - AWD (A4 Platform)) Section 5 (1.8L - Ignition/Glow Plug System - AWD (A4 Platform)) Section 6 (1.8L - Fuel Supply - AWD, AWP, AWW (A4 Platform)) Section 7 (1.8L - Turbocharger, G-Charger - AWD, AWP, AWW Generic (A4 Platform)) Section 8 (1.8L - Exhaust System, Emission Controls - AWD, AWP, AWW Generic (A4 Platform)) Section 9 (1.8L - Ignition/Glow Plug System - AWD, AWP, AWW Generic (A4 Platform)) Section 10 (1.8L - On Board Diagnostic (OBD), Generic Scan Tool - AWD, AWP, AWW) Section 11 (2.0L - MULTIPORT Fuel Injection (MFI) - AEG, AVH, AZG) Section 12 (On Board Diagnostic (OBD), Generic Scan Tool - 2.0L AEG, AVH, AZG) Section 13 (2.0L - Engine Mechanical - AEG, AVH, AZG, BBW, BEV (A4 Platform)) Section 14 (1.8L - Engine Mechanical, Engine Code(S): AWD, AWW, AWP (A4 Platform)) Section 15 (1.8L - Fuel Injection & Ignition, Engine Code(S): AWD) Section 16 (1.8L - Generic Scan Tool, Engine Code(S): AWP, AWW, AWD (A4 Platform)) Section 17 (2.0L - Generic Scan Tool, Engine Code(S): AEG (A4 Platform)) Section 18 (4 SPD. Automatic Transmission 01M On Board Diagnostic (OBD) (A4 Platform)) Section 19 (4 SPD. Automatic Transmission 01M (A4 Platform)) Different car Section 1 (2.8L VR6-Cylinder (Engine Code BDF) (A4 Platform)) Section 2 (1.9L - Engine Mechanical - ALH (A4 Platform)) Section 3 (1.9L - Cooling System - ALH (A4 Platform)) Section 4 (1.9L - Turbocharger, G-Charger - ALH (A4 Platform)) Section 5 (1.9L - Exhaust System, Emission Controls - ALH (A4 Platform)) Section 6 (On Board Diagnostic (OBD) (From Late Production 1999) (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 (1.8L - On Board Diagnostic (OBD) - AWW, AWP (A4 Platform)) Section 79 (1.8L - MULTIPORT Fuel Injection (MFI) - AWW, AWP (A4 Platform)) Section 80 (1.8L - Ignition/Glow Plug System - AWW, AWP (A4 Platform)) Section 81 (1.8L - MULTIPORT Fuel Injection (MFI) - AWD, AWP, AWW Generic (A4 Platform)) Section 82 (On Board Diagnostic (OBD) - 1.9L ALH, 2V TDI) Section 83 (1.9L - Diesel Fuel Injection - ALH (A4 Platform)) Section 84 (1.9L - Ignition/Glow Plug System - ALH (A4 Platform)) Section 85 (On Board Diagnostic (OBD) - 1.9L ALH, 2V TDI) Section 86 (1.9L - Diesel Fuel Injection - ALH, 2V TDI (A4 Platform)) Section 87 (1.9L - Ignition/Glow Plug System - ALH, 2V TDI (A4 Platform)) Section 88 (1.9L - Fuel Supply - ALH, BEW (Generic Scan Tool) (A4 Platform)) Section 89 (1.9L - Turbocharger, G-Charger - ALH, BEW (Generic Scan Tool) (A4 Platform)) Section 90 (1.9L - Diesel Fuel Injection - TDI, ALH, BEW (Generic Scan Tool) (A4 Platform)) Section 91 (1.9L - Exhaust System, Emission Controls - ALH, BEW (Generic Scan Tool) (A4 Platform)) Section 92 (1.9L - Ignition/Glow Plug System - ALH, BEW (Generic Scan Tool) (A4 Platform)) Section 93 (On Board Diagnostic (OBD), Generic Scan Tool - 1.9L TDI, ALH, BEW (A4 Platform)) Section 94 (Cabin Air Filter - A5G Platform) Section 95 (1.9L - TDI Engine Mechanical, Fuel Injection Glow Plug, Engine Code(S): BEW (A4 Platform)) Section 96 (3.2L VR6 4V Engine Mechanical, Fuel Injection Ignition, Engine Code(S):
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
Disclosure: Verified tool recommendations may earn an affiliate commission at no cost to you.
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.
Rather have a pro handle this?
A certified mobile mechanic comes to your home or office. They bring the tools, you stay comfortable. No tow truck, no waiting room, no surprises.
No obligation. See pricing before you book.