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 (2.0L - MULTIPORT Fuel Injection (MFI) - AEG, AVH, AZG) Section 2 (On Board Diagnostic (OBD), Generic Scan Tool - 2.0L AEG, AVH, AZG) Section 3 (2.0L - Engine Mechanical - AEG, AVH, AZG, BBW, BEV (A4 Platform)) Section 4 (1.9L - TDI Engine Mechanical, Fuel Injection Glow Plug, Engine Code(S): BEW (A4 Platform)) Section 5 (1.9L - TDI Engine Mechanical - ALH (A4 Platform)) Section 6 (1.8L - Engine Mechanical, Engine Code(S): AWD, AWW, AWP (A4 Platform)) Section 7 (1.8L - Fuel Injection Ignition, Engine Code(S): AWW, AWP (A4 Platform)) Section 8 (1.8L - Generic Scan Tool, Engine Code(S): AWP, AWW, AWD (A4 Platform)) Section 9 (1.9L - Fuel Injection Glow Plug, Engine Code ALH, From My 2002 (A4 Platform)) Section 10 (1.9L - TDI And TDI Pd Generic Scan Tool, Engine Code(S): ALH, BEW (A4 Platform)) Section 11 (5 SPD. Manual Transmission 02J (A4 Platform)) Section 12 (5 AND 6 SPD. MANUAL TRANSMISSION 02M (2002-05) (A4 Platform)) Section 13 (4 SPD. Automatic Transmission 01M On Board Diagnostic (OBD) (A4 Platform)) Section 14 (5 SPD. Automatic Transmission 09A On Board Diagnostic (OBD)) Section 15 (4 SPD. Automatic Transmission 01M (A4 Platform)) Section 16 (5 SPD. Automatic Transmission 09A) Section 17 (Brake System - OBD (A4 Platform)) Section 18 (Brake System - A4 Platform) Section 19 (Suspension, Wheels, Steering (A4 Platform)) Section 20 (Body Exterior (A4 Platform)) Section 21 (Body Interior (A4 Platform)) Section 22 (Body On Board Diagnostic (OBD) (A4 Platform) [On Board Diagnostic (OBD) - Driver's Side Seat Adjustment, On Board Diagnostic (OBD)]) Section 23 (Electrical Equipment On Board Diagnostic (OBD) (A4 Platform)) Section 24 (Electrical Equipment (A4 Platform)) Section 25 (Electrical Equipment - General Information (A4 Platform)) Section 26 (Radio, Telephone, Navigation (A4 Platform)) Section 27 (Clutches - 0A4 (Sedan) (A5 Platform)) Section 28 (General, Technical Data - Engine - 2.5L - Engine Code(S): BGP, BGQ, CBTA & CBUA (As Of 12.2010) (Sedan) (A5 Platform)) Section 29 (General, Technical Data - Manual Transmission 0A4 (Sedan) (A5 Platform)) Section 30 (2.5L - MULTIPORT Fuel Injection - Engine Code(S): BGP, BGQ, CBTA & CBUA (Sedan) (A5 Platform)) Section 31 (Controls, Housing - Manual Transmission 0A4 (Sedan) (A5 Platform)) Section 32 (2.5L - Cylinder Head, VALVETRAIN - Engine Code(S): BGP, BGQ, CBTA & CBUA (Sedan) (A5 Platform)) Section 33 (2.5L - Ignition/Glow Plug System - Engine Code(S): BGP, BGQ, CBTA & CBUA (Sedan) (A5 Platform)) Section 34 (2.5L - Exhaust System, Emission Controls - Engine Code(S): BGP, BGQ, CBTA & CBUA (Sedan) (A5 Platform)) Section 35 (2.5L - Fuel Supply - Engine Code(S): BGP, BGQ, CBTA & CBUA (Sedan) (A5 Platform)) Section 36 (2.5L - Cooling System - Engine Code(S): BGP, BGQ, CBTA & CBUA (Sedan) (A5 Platform)) Section 37 (2.5L - Crankshaft, Cylinder Block - Engine Code(S): BGP, BGQ, CBTA & CBUA (Sedan) (A5 Platform)) Section 38 (Gears, Shafts - Manual Transmission 0A4 (Sedan) (A5 Platform)) Section 39 (Final Drive, Differential - Manual Transmission 0A4 (Sedan) (A5 Platform)) Section 40 (2.5L - Engine Assembly - Engine Code(S): BGP, BGQ, CBTA & CBUA (Sedan) (A5 Platform)) Section 41 (2.5L - Lubrication - Engine Code(S): BGP, BGQ, CBTA & CBUA (Sedan) (A5 Platform)) Different car Section 1 (3.2L VR6 4V Engine Mechanical, Fuel Injection Ignition, Engine Code(S): BJS) Section 2 (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 3 (2.8L - Engine Mechanical - AFP (A4 Platform)) Section 4 (2.8L - Engine Mechanical, Engine Code: BDF) Section 5 (1.8L - Fuel Injection & Ignition, Engine Code(S): AWD) Section 6 (1.9L - Fuel Injection Glow Plug, Engine Code: ALH (A4 Platform)) Section 7 (2.0L - Generic Scan Tool, Engine Code(S): AEG (A4 Platform)) Section 8 (2.8L - Fuel Injection Ignition, Engine Code(S): AFP (A4 Platform)) Section 9 (2.8L - Fuel Injection Ignition. [BDF] - (24 - MULTIPORT Fuel Injection, 28 - Ignition/Glow Plug System)) Section 10 (6 SPD. Manual Transmission 02Y All Wheel Drive) Section 11 (Maintenance, Diagnosis - Fluid Capacity Tables (A5 Platform)) Section 12 (Maintenance, Diagnosis - Fluid Capacity Tables (A5 Platform)) Section 13 (Maintenance, Diagnosis - Fluid Capacity Tables (A5 Platform)) Section 14 (Fluid Capacity Tables (Sedan) (A5 Platform)) Section 15 (Clutch - 02E (Sedan) (A5 Platform)) Section 16 (Clutch - 02Q (Sedan) (A5 Platform)) Section 17 (General, Technical Data - Automatic Transmission 02E (Sedan) (A5 Platform)) Section 18 (General, Technical Data - Engine - 2.0L - Engine Code(S): AXX, BPY & BWA (As Of 10.2008) (A5 Platform)) Section 19 (General, Technical Data - Engine - 2.0L - Engine Code(S): CBFA & CCTA (Sedan) (A5 Platform)) Section 20 (General, Technical Data - Engine - 2.0L - Engine Code(S): CBEA & CJAA (Sedan) (A5 Platform)) Section 21 (2.0L - MULTIPORT Fuel Injection - Engine Code(S): AXX, BPY & BWA (A5 Platform)) Section 22 (2.0L - MULTIPORT Fuel Injection - Engine Code(S): CBFA & CCTA (Sedan) (A5 Platform)) Section 23 (Controls, Housing - Automatic Transmission 02E (Sedan) (A5 Platform)) Section 24 (Controls, Housing - Manual Transmission 02Q (Sedan) (A5 Platform)) Section 25 (2.0L - Cylinder Head, VALVETRAIN - Engine Code(S): AXX, BPY & BWA (A5 Platform)) Section 26 (2.0L - Cylinder Head, VALVETRAIN - Engine Code(S): CBFA & CCTA (Sedan) (A5 Platform)) Section 27 (2.0L - Cylinder Head, VALVETRAIN - Engine Code(S): CBEA & CJAA (Sedan) (A5 Platform)) Section 28 (2.0L - Ignition/Glow Plug System - Engine Code(S): AXX, BPY & BWA (A5 Platform)) Section 29 (2.0L - Ignition/Glow Plug System - Engine Code(S): CBFA & CCTA (Sedan) (A5 Platform)) Section 30 (2.0L - Ignition/Glow Plug System - Engine Code(S): CBEA & CJAA (Sedan) (A5 Platform)) Section 31 (2.0L - Exhaust System, Emission Controls - Engine Code(S): AXX, BPY & BWA (A5 Platform)) Section 32 (2.0L - Exhaust System, Emission Controls - Engine Code(S): CBFA & CCTA (Sedan) (A5 Platform)) Section 33 (2.0L - Exhaust System, Emission Controls - Engine Code(S): CBEA & CJAA (Sedan) (A5 Platform)) Section 34 (2.0L - Fuel Supply - Engine Code(S): BPY (A5 Platform)) Section 35 (2.0L - Turbocharger - Engine Code(S): AXX, BPY & BWA (A5 Platform)) Section 36 (2.0L - Cooling System - Engine Code(S): AXX, BPY & BWA (A5 Platform)) Section 37 (2.0L - Crankshaft, Cylinder Block - Engine Code(S): AXX, BPY & BWA (A5 Platform)) Section 38 (2.0L - Engine Assembly - Engine Code(S): CBEA & CJAA (Sedan) (A5 Platform)) Section 39 (2.0L - Diesel Fuel Injection - Engine Code(S): CBEA & CJAA (Sedan) (A5 Platform)) Section 40 (2.0L - Fuel Supply - Engine Code(S): CBEA & CJAA (Sedan) (A5 Platform)) Section 41 (2.0L - Cooling System - Engine Code(S): CBEA & CJAA (Sedan) (A5 Platform)) Section 42 (2.0L - Turbocharger, Supercharger - Engine Code(S): CBEA & CJAA (Sedan) (A5 Platform)) Section 43 (2.0L - Crankshaft, Cylinder Block - Engine Code(S): CBEA & CJAA (Sedan) (A5 Platform)) Section 44 (2.0L - Lubrication - Engine Code(S): CBEA & CJAA (Sedan) (A5 Platform)) Section 45 (2.0L - Engine Assembly - Engine Code(S): CBFA & CCTA (Sedan) (A5 Platform)) Section 46 (2.0L - Turbocharger, Supercharger - Engine Code(S): CBFA & CCTA (Sedan) (A5 Platform)) Section 47 (2.0L - Cooling System - Engine Code(S): CBFA & CCTA (Sedan) (A5 Platform)) Section 48 (2.0L - Crankshaft, Cylinder Block - Engine Code(S): CBFA & CCTA (Se
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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.
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