2004 Audi A3 repair manual
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2004 Audi A3 - OEM Factory Repair Manual
About the Audi A3
We cover four A3 generations: the 8L (1996 to 2003), the 8P (2003 to 2012), the 8V (2012 to 2020) and the 8Y (from 2020). Engines range from the 1.8T and 2.0 TFSI to TDI diesels, with S3 and RS3 performance versions.
- Review repair procedures before starting a job (from routine maintenance to major repairs)
- Understand component layouts with technical illustrations (procedures are explained step by step)
- Follow electrical connections using wiring diagrams
- Plan your work and discuss recommended repairs with your mechanic (or double-check a quote)
- Place your order and pay. We create your account automatically.
- Enter your 17-character VIN—right after payment or later, from your account.
- We prepare your manual within 12–48 hours after we receive your VIN.
- Download the PDF from your account.
About the 2004 Audi A3
The 2004 Audi A3 belongs to the second-generation A3 (8P), built for model years 2004–2013. It is the first model year of this generation: the platform, wiring and many procedures changed compared with the previous model, so a manual for an earlier year will not match it.
Check the model year on your VIN: on a 2004 vehicle the 10th character of the 17-digit VIN is “4”. Vehicles built for North America always carry the model year in that position; on some European or Australian vehicles it may be left unused, so in that case go by the registration papers or the build plate.
At about 22 years old, a 2004 vehicle is in the age range where wiring, rubber hoses, seals and corrosion repairs take most of the work, and where original factory information is hardest to find.
Same generation: 2005 Audi A3, 2006 Audi A3, 2007 Audi A3, 2008 Audi A3, 2009 Audi A3, 2010 Audi A3, 2011 Audi A3, 2012 Audi A3, 2013 Audi A3.
All Audi A3 model years: 1996 · 1997 · 1998 · 1999 · 2000 · 2001 · 2002 · 2003 · 2004 · 2005 · 2006 · 2007 · 2008 · 2009 · 2010 · 2011 · 2012 · 2013 · 2014 · 2015 · 2016 · 2017 · 2018 · 2019 · 2020 · 2021 · 2022 · 2023 · 2024 · 2025 · 2026
Engines
4-Cylinder engine (5-valve), Mechanics AGN APG
4-cyl TDI®-Engine, Mechanical Components ASZ ATD AXR
4-cyl. Diesel Direct Injection Engine (TDI), Mech. Components AGR AHF ALH ASV
4-cylinder 1.8 ltr. 5-valve turbocharged engine (110-132 kW), mechanics AGU AJQ APP AQA ARY ARZ AUM AUQ ARX
4-cylinder 1.8 ltr. 5-valve turbocharged engine (154-165 kW), mechanics AUL AMK BAM APY
4-cylinder Engine (2-valve), Mechanical Components AEH AKL APF
4-cylinder engine (2-valve), mechanics AVU BFQ
4-cylinder TDI engine (1.6 ltr. 4-valve common rail), mechanics CAYC CAYB
4-cylinder TDI engine (2.0 ltr. 4-valve common rail - generation II), mechanics CLJA CFGB CFFB CFFA
4-cylinder TDI engine (2.0 ltr. 4-valve common rail), mechanics CBAA CBBB CBAB CBEA
4-cylinder TDI unit injector engine (1.9 ltr. 2-valve), mechanics BXE BKC
4-cylinder TDI unit injector engine (1.9 ltr.; 2.0 ltr. 2-valve), mechanics BMM BLS
4-cylinder TDI unit injector engine (2.0 ltr. 4-valve), mechanics BMN BUY AZV BKD
4-cylinder direct injection engine (1.2 ltr. 2-valve TFSI), mechanics CBZB
4-cylinder direct injection engine (1.4 ltr. 4-valve TFSI), mechanics CAXC CMSA
4-cylinder direct injection engine (1.8, 2.0 ltr. 4-valve TFSI - generation II) BPU BZB CBFA CCTA CAWB BYT CDAA CCZA
4-cylinder direct petrol injection engine (1.6 ltr. 4-valve), mechanics BAG BLP BLF
4-cylinder direct petrol injection engine (2.0 ltr. 4-valve turbo), mechanics BHZ BZC CDLA CDLC AXX BPY BWA
4-cylinder direct petrol injection engine (2.0 ltr. 4-valve), mechanics BVZ AXW BLX BLY BLR BHD BMB BVY
4-cylinder injection engine (1.6 ltr. 2-valve), mechanics CCSA CMXA BGU BSE BSF
5-cylinder direct injection engine (2.5 ltr. 4-valve TFSI) CEPB CEPA
6-cylinder injection engine (3.2 ltr. 4-valve), mechanics CBRA BUB BDB BMJ
