2003 Audi A3 repair manual

2003 Audi A3 OEM factory repair manual – VIN-specific PDF download

The 2003 Audi A3 (8L) factory repair manual, taken from Audi's own service information for your VIN: repair procedures, torque specs and wiring diagrams for your exact car. Audi offered the 2003 A3 with 22 engine versions, petrol and TDI diesel, each with its own gearbox options (listed below); your manual is built for the engine and gearbox in your VIN.

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The 2003 Audi A3 belongs to the first-generation A3 (8L), model years 1996–2003. It is the last model year of this generation and carries the running changes made during production. Compared with 2002, the engine list adds the 1.6 TDI (CAYC, CAYB), the 2.0 TDI (BMN, BUY, AZV, BKD), the 1.9 TDI (BXE, BKC).

Engines offered for the 2003 Audi A3

• 4-Cylinder (5-valve): AGN, APG
• 4-cyl TDI-, Mechanical Components ASZ ATD AXR: ASZ, ATD, AXR
• 4-cyl. Diesel Direct Injection (TDI), Mech. Components AGR AHF ALH ASV: AGR, AHF, ALH, ASV
• 1.8 petrol: AGU, AJQ, APP, AQA, ARY, ARZ, AUM, AUQ, ARX
• 1.8 petrol: AUL, AMK, BAM, APY
• 4-cylinder (2-valve), Mechanical Components AEH AKL APF: AEH, AKL, APF
• 4-cylinder (2-valve): AVU, BFQ
• 1.6 TDI: CAYC, CAYB
• 2.0 TDI: CLJA, CFGB, CFFB, CFFA
• 2.0 TDI: CBAA, CBBB, CBAB, CBEA
• 1.9 TDI: BXE, BKC
• 1.9/2.0 TDI: BMM, BLS
• 2.0 TDI: BMN, BUY, AZV, BKD
• 1.2 TFSI: CBZB
• 1.4 TFSI: CAXC, CMSA
• 2.0 TFSI: BPU, BZB, CBFA, CCTA, CAWB, BYT, CDAA, CCZA
• 1.6 petrol: BAG, BLP, BLF
• 2.0 petrol: BHZ, BZC, CDLA, CDLC, AXX, BPY, BWA
• 2.0 petrol: BVZ, AXW, BLX, BLY, BLR, BHD, BMB, BVY
• 1.6 petrol: CCSA, CMXA, BGU, BSE, BSF
• 2.5 TFSI: CEPB, CEPA
• 3.2 petrol: CBRA, BUB, BDB, BMJ

You find your engine code on the vehicle data sticker in the spare wheel well and in the service book.

Gearboxes offered

• 5-gear manual: 02C four wheel drive/final drives
• 5-speed manual: 02C, four-wheel drive
• 5-speed manual: 02J
• 5-speed manual: 02K
• 5/6-speed manual: 02M, four-wheel drive/gearbox
• 5/6-speed manual: 02M/02Y, four-wheel drive
• Automatic: 01M
• Automatic: 09A
• 5-speed manual: 0A4
• 5-speed manual: 0AF
• 6-speed manual: 02Q, four-wheel drive
• 6-speed manual: 02Q, front-wheel drive
• 6-speed manual: 02S
• 6-speed manual: 0AG
• 6-speed manual: 0AJ
• 7-speed dual clutch: 0AM (S tronic)
• 7-speed dual clutch: 0BH (S tronic)

The 1.8 20-valve turbo engines of this era need regular timing belt and water pump service, and ignition coils and oil sludge in the turbo feed line are common faults.

On a 2003 car the 10th character of the VIN is “3”, a quick way to confirm the model year before you order.

Made to order. Each manual is built for one VIN, not copied from a stock file, which is why delivery takes 12–24 hours instead of seconds. It comes directly from Audi's service information, so it is more complete than aftermarket manuals.

Once it arrives it is yours: a PDF with index, bookmarks, links and search that opens on any device. Keep it for the next job, print the pages you need and take them to the car.

Sections in the 2003 Audi A3 workshop manual

• General Information and Maintenance
• Engine Mechanical, Cooling and Lubrication
• Fuel Supply and Exhaust System
• Heating, Air Conditioning and Auxiliary Heater
• Brake System and ABS
• Steering and Power Steering Control
• Front and Rear Suspension, Self-Leveling Suspension
• Transmission, Transaxle and Transfer Box
• Driveline, Front and Rear Axle
• Body Repair, Exterior, Interior and Paint
• Doors, Locks, Glass and Window Systems
• Seats, Seat Belts and Airbags
• Wheels, Tires and Vehicle Geometry
• Audio, Visual and Navigation
• Electrical: Charging, Starting and Power Systems
• Exterior and Interior Lighting
• Complete Wiring Diagrams and Fitting Locations

Engines offered for the 2003 Audi A3:

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

Transmissions offered for the 2003 Audi A3:

5-gear manual gearbox 02C four wheel drive/final drives
5-speed manual gearbox 02C, four-wheel drive
5-speed manual gearbox 02J
5-speed manual gearbox 02K
5/6-speed manual gearbox 02M, four-wheel drive/gearbox
5/6-speed manual gearbox 02M/02Y, four-wheel drive
Automatic gearbox 01M
Automatic gearbox 09A
5-speed manual gearbox 0A4
5-speed manual gearbox 0AF
6-speed manual gearbox 02Q, four-wheel drive
6-speed manual gearbox 02Q, front-wheel drive
6-speed manual gearbox 02S
6-speed manual gearbox 0AG
6-speed manual gearbox 0AJ
7-speed dual clutch gearbox 0AM (S tronic)
7-speed dual clutch gearbox 0BH (S tronic)

Your manual is built for the version in your VIN.

This video is for information. Your manual looks and works the same way, but it is not identical.

Free, direct download link in 12-24 hours.