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 (1.9L - 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 (1.9L - Ignition/Glow Plug System - ALH (A4 Platform)) Section 7 (1.9L - Diesel Fuel Injection - ALH, 2V TDI (A4 Platform)) Section 8 (1.9L - Ignition/Glow Plug System - ALH, 2V TDI (A4 Platform)) Section 9 (1.9L - Fuel Supply - ALH, BEW (Generic Scan Tool) (A4 Platform)) Section 10 (1.9L - Turbocharger, G-Charger - ALH, BEW (Generic Scan Tool) (A4 Platform)) Section 11 (1.9L - Diesel Fuel Injection - TDI, ALH, BEW (Generic Scan Tool) (A4 Platform)) Section 12 (1.9L - Exhaust System, Emission Controls - ALH, BEW (Generic Scan Tool) (A4 Platform)) Section 13 (1.9L - Ignition/Glow Plug System - ALH, BEW (Generic Scan Tool) (A4 Platform)) Section 14 (On Board Diagnostic (OBD), Generic Scan Tool - 1.9L TDI, ALH, BEW (A4 Platform)) Section 15 (2.0L - MULTIPORT Fuel Injection (MFI) - AEG, AVH, AZG) Section 16 (On Board Diagnostic (OBD), Generic Scan Tool - 2.0L AEG, AVH, AZG) Section 17 (2.0L - Engine Mechanical - AEG, AVH, AZG, BBW, BEV (A4 Platform)) Section 18 (1.9L - TDI Engine Mechanical, Fuel Injection Glow Plug, Engine Code(S): BEW (A4 Platform)) Section 19 (1.9L - TDI Engine Mechanical - ALH (A4 Platform)) Section 20 (1.9L - Fuel Injection Glow Plug, Engine Code ALH, From My 2002 (A4 Platform)) Section 21 (1.9L - TDI And TDI Pd Generic Scan Tool, Engine Code(S): ALH, BEW (A4 Platform)) Section 22 (5 SPD. Manual Transmission 02J (A4 Platform)) Section 23 (5 AND 6 SPD. MANUAL TRANSMISSION 02M (2002-05) (A4 Platform)) Section 24 (4 SPD. Automatic Transmission 01M On Board Diagnostic (OBD) (A4 Platform)) Section 25 (4 SPD. Automatic Transmission 01M (A4 Platform)) Section 26 (Brake System - A4 Platform) Section 27 (Maintenance Intervals (Sedan) (A5 Platform)) Section 28 (Wiring (Sedan) (A5 Platform)) Section 29 (General, Technical Data - Heating, Ventilation & Air Conditioning (Sedan) (A5 Platform)) Section 30 (Maintenance, Diagnosis - Maintenance Procedures (As Of 08.2009) (Sedan) (A5 Platform)) Section 31 (Maintenance, Diagnosis - Maintenance Procedures (As Of 05.2011) (Sedan) (A5 Platform)) Section 32 (Air Conditioning (Sedan) (A5 Platform)) Section 33 (Heating, Ventilation (Sedan) (A5 Platform)) Section 34 (Clutches - 0A4 (Sedan) (A5 Platform)) Section 35 (Wheels, Tires, Wheel Alignment (Sedan) (A5 Platform)) Section 36 (Wheels, Tires, Wheel Alignment - General Information (Sedan) (A5 Platform)) Section 37 (1.9L - Technical Data - Engine Code(S): BKC, BLS, BRM & BXE (A5 Platform)) Section 38 (General, Technical Data - Engine - 2.5L - Engine Code(S): BGP, BGQ, CBTA & CBUA (As Of 12.2010) (Sedan) (A5 Platform)) Section 39 (General, Technical Data - Automatic Transmission 09G (Sedan) (A5 Platform)) Section 40 (General, Technical Data - Suspension, Wheels, Steering (Sedan) (A5 Platform)) Section 41 (General, Technical Data - Manual Transmission 0A4 (Sedan) (A5 Platform)) Section 42 (Controls, Housing - Automatic Transmission 09G (Sedan) (A5 Platform)) Section 43 (Battery, Starter, Generator, Cruise Control (Sedan) (A5 Platform)) Section 44 (Hydraulic Brake Components (Sedan) (A5 Platform)) Section 45 (2.5L - MULTIPORT Fuel Injection - Engine Code(S): BGP, BGQ, CBTA & CBUA (Sedan) (A5 Platform)) Section 46 (Controls, Housing - Manual Transmission 0A4 (Sedan) (A5 Platform)) Section 47 (1.9L - Fuel Injection System - Engine Code(S): BKC, BLS, BRM & BXE (A5 Platform)) Section 48 (Wiper/Washer Systems - General Information (Sedan) (A5 Platform)) Section 49 (Wiper/Washer Systems (Sedan) (A5 Platform)) Section 50 (Body Front (Sedan) (A5 Platform)) Section 51 (1.9L - Cylinder Head, VALVETRAIN - Engine Code(S): BKC, BLS, BRM & BXE (A5 Platform)) Section 52 (2.5L - Cylinder Head, VALVETRAIN - Engine Code(S): BGP, BGQ, CBTA & CBUA (Sedan) (A5 Platform)) Section 53 (2.5L - Ignition/Glow Plug System - Engine Code(S): BGP, BGQ, CBTA & CBUA (Sedan) (A5 Platform)) Section 54 (1.9L - Glow Plug System - Engine Code(S): BKC, BLS, BRM & BXE (A5 Platform)) Section 55 (Electrical System - (Battery, Starter, Generator, Cruise Control - General Information) (Sedan) (A5 Platform)) Section 56 (Mechanical Components - Brake System (Sedan) (A5 Platform)) Section 57 (2.5L - Exhaust System, Emission Controls - Engine Code(S): BGP, BGQ, CBTA & CBUA (Sedan) (A5 Platform)) Section 58 (1.9L - Exhaust System, Emission Controls - Engine Code(S): BKC, BLS, BRM & BXE (A5 Platform)) Section 59 (Interior Equipment (Sedan) (A5 Platform)) Section 60 (1.9L - Turbocharger, G-Charger - Engine Code(S): BKC, BLS, BRM & BXE (A5 Platform)) Section 61 (Seat Frames (Sedan) (A5 Platform)) Section 62 (Exterior Equipment (Sedan) (A5 Platform)) Section 63 (2.5L - Fuel Supply - Engine Code(S): BGP, BGQ, CBTA & CBUA (Sedan) (A5 Platform)) Section 64 (Gears, Hydraulic Controls - Automatic Transmission 09G (Sedan) (A5 Platform)) Section 65 (2.5L - Cooling System - Engine Code(S): BGP, BGQ, CBTA & CBUA (Sedan) (A5 Platform)) Section 66 (2.5L - Crankshaft, Cylinder Block - Engine Code(S): BGP, BGQ, CBTA & CBUA (Sedan) (A5 Platform)) Section 67 (Glass, Window Regulators (Sedan) (A5 Platform)) Section 68 (Front Suspension (Sedan) (A5 Platform)) Section 69 (Wiring - General Information (Sedan) (A5 Platform)) Section 70 (Exterior Lights, Switches (Sedan) (A5 Platform)) Section 71 (Exterior Body Panels (Hood, Lids) (Sedan) (A5 Platform)) Section 72 (Bumpers (Sedan) (A5 Platform)) Section 73 (1.9L - Crankshaft, Cylinder Block - Engine Code(S): BKC, BLS, BRM & BXE (A5 Platform)) Section 74 (1.9L - Engine, Removing And Installing - BKC, BLS, BRM & BXE (A5 Platform)) Section 75 (1.9L - Cooling System - Engine Code(S): BKC, BLS, BRM & BXE (A5 Platform)) Section 76 (1.9L - Engine Lubrication - Engine Code(S): BKC, BLS, BRM & BXE (A5 Platform)) Section 77 (1.9L - Fuel Supply System - BKC, BLS, BRM & BXE (A5 Platform)) Section 78 (Gears, Shafts - Manual Transmission 0A4 (Sedan) (A5 Platform)) Section 79 (Final Drive, Differential - Manual Transmission 0A4 (Sedan) (A5 Platform)) Section 80 (2.5L - Engine Assembly - Engine Code(S): BGP, BGQ, CBTA & CBUA (Sedan) (A5 Platform)) Section 81 (Interior Trim (Sedan) (A5 Platform)) Section 82 (Communication (Sedan) (A5 Platform)) Section 83 (Instruments (Sedan) (A5 Platform)) Section 84 (Passenger Protection, Airbags, Seat Belts (Sedan) (A5 Platform)) Section 85 (Steering (Sedan) (A5 Platform)) Section 86 (Interior Lights, Switches (Sedan) (A5 Platform)) Section 87 (Seat Upholstery, Covers (Sedan) (A5 Platform)) Section 88 (Front Doors, Central Locking System (Sedan) (A5 Platform)) Section 89 (Rear Doors (Sedan) (A5 Platform)) Section 90 (Antilock Brake System (Sedan) (A5 Platform)) Section 91 (Rear Suspension (Sedan) (A5 Platform)) Section 92 (2.5L - Lubrication - Engine Code(S): BGP, BGQ, CBTA & CBUA (Sedan) (A5 Platform)) Different car Section 1 (5 SPD. Manual Transmission 020 (A3 Platform)) Section 2 (5 SPD. Manual Transmission 02A (A3 Platform)) Section 3 (4 SPD. Automatic Transmission 01M (A3 Platform)) Section 4 (4 SPD. Automatic Transmission 01M On Board Diagnostic (A3 Platform)) Section 5 (4 SPD. Automatic Transmission 096 (A3 Platform)) Section 6 (Wheels, Tires, Wheel Alignment (A3 Platform)) Section 7 (Brakes - Hydraulic Com
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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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