Introduction
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Market Position
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Market Segment:
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Premium compact hatchback
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Brand Philosophy:
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Audi's focus on 'Vorsprung durch Technik' (Progress through Technology) is evident in the A2's innovative design and lightweight construction.
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Competitive Analysis
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Key Competitors:
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BMW 1 Series, Mercedes-Benz A-Class, Volkswagen Golf
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Key Features
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Aluminum Space Frame:
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The A2's signature feature is its advanced aluminum space frame, significantly reducing weight for improved efficiency and dynamics.
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Design Philosophy:
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Unique, aerodynamic, and spacious interior for its compact footprint.
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Manual Value
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Completeness:
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This is described as the most completed and official, full factory service repair manual, indicating extensive coverage.
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Manual Coverage
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Systems Covered
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Powertrain:
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Mechanical Engine, Transmission
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Chassis:
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Brakes, Driveline Axle, Steering, Suspension, Tires & Wheels
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Electrical:
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Electrical System, Lights, Restraints
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Body & Comfort:
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Body & Frame - Interior & Exterior, Accessories & Equipment, Audio, Visual & Telematics, HVAC
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Diagnostics:
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Wiring Diagrams
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Exhaust System:
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Coverage of exhaust components, catalytic converter, and emissions control systems.
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Procedures Included
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Maintenance:
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Scheduled maintenance, fluid changes, filter replacements, inspections
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Repair:
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Component removal, installation, overhaul, troubleshooting
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Diagnostics:
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Fault finding, symptom analysis, diagnostic trouble codes (DTCs)
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Technical Specifications:
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Torque values, clearances, fluid capacities, electrical data
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Troubleshooting Guides:
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Detailed diagnostic flowcharts and symptom-based troubleshooting for electrical and mechanical issues.
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Technical Depth
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Depth Of Coverage:
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Comprehensive from basic maintenance to advanced mechanical and electrical diagnostics and repair.
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Repair Complexity:
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Covers everything from routine maintenance to complex component overhauls, including engine rebuilds, transmission repairs, and complete electrical system diagnostics.
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Engine Specifications
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Primary Engine
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Engine Options:
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The 2004 model year typically included the 1.4L FSI (Fuel Stratified Injection) and 1.6L FSI petrol engines, as well as the 1.4L TDI (Turbocharged Direct Injection) diesel engine. Specific engine codes are vital for detailed information.
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Performance
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Typical Power Output:
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Petrol: 1.4 FSI ~90 PS (66 kW), 1.6 FSI ~110 PS (81 kW); Diesel: 1.4 TDI ~90 PS (66 kW). Exact figures vary by specific engine code.
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Typical Torque:
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Petrol: 1.4 FSI ~130 Nm, 1.6 FSI ~155 Nm; Diesel: 1.4 TDI ~200 Nm. Exact figures vary by specific engine code.
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Fuel System
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Fuel Delivery Petrol:
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Fuel injection, typically multi-point or direct injection (FSI).
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Fuel Delivery Diesel:
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Common rail direct injection (TDI).
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Engine Management
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ECU Type:
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Engine control unit (ECU) with extensive diagnostic capabilities.
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Engine Codes
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Common Engine Codes:
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For 2004 models, common petrol engines might include AUA (1.4L 16V), BBY (1.4L 16V MPI), BAD (1.6 FSI). TDI engines often include AMF (1.4L TDI). Specific codes are crucial for precise data.
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Dimensions
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Exterior
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Length:
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Approx. 3,910 mm (153.9 in)
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Width:
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Approx. 1,670 mm (65.7 in)
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Height:
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Approx. 1,570 mm (61.8 in)
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Wheelbase:
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Approx. 2,460 mm (96.9 in)
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Weights
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Curb Weight:
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Ranges from approx. 1,050 kg to 1,200 kg depending on engine and equipment, thanks to the aluminum space frame.
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Towing Capacity:
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Towing capacity information, if applicable and specified by Audi for the A2.
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Safety Features
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Ratings
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Euro Ncap Rating:
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Achieved a 4-star Euro NCAP safety rating, indicating good performance in crash tests.
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Active Features
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Braking System:
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Anti-lock Braking System (ABS), Electronic Brake-force Distribution (EBD), Brake Assist (BA)
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Stability Control:
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Traction Control System (ASR) often standard, Electronic Stability Program (ESP) available on some models.
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Lighting Systems:
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Details on headlight aiming, bulb replacement, and diagnostics for Xenon or Halogen systems, as well as auxiliary lighting.
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Passive Features
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Airbags:
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Front airbags, side airbags, and optional curtain airbags.
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Body Structure:
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Designed with a focus on occupant protection, utilizing the aluminum space frame and crumple zones.
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Maintenance
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Service Intervals
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Oil Change Interval:
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Typically 15,000 km (9,300 miles) or 12 months, whichever comes first, with specific intervals depending on engine oil type and driving conditions. Consult manual for exact requirements.
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Major Service Interval:
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Major services often involve timing belt replacement (if applicable to the specific engine), coolant checks, brake inspections, and other component checks at intervals like 90,000 km or 120,000 km. Specifics are detailed in the manual.
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Fluid Specifications
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Engine Oil Specification:
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Varies by engine, but commonly requires VW 502 00 or VW 504 00 compliant synthetic oils (e.g., 5W-30 or 0W-30).
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Coolant Specification:
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G12 or G12+ (VW TL 774 C/D) type antifreeze, mixed with distilled water.
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Brake Fluid Specification:
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DOT 4
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Transmission Fluid Manual:
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API GL-4 or GL-5, SAE 75W-90 or 75W-80 gear oil. Specific part numbers and viscosity grades are critical.
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Transmission Fluid Multitronic:
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Specific CVT fluid, often requiring VW G 052 180 or similar. Extreme care is needed for correct fluid type and level.
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Power Steering Fluid:
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Specific hydraulic fluid type required for the power steering system.
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Air Conditioning Refrigerant:
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Information on the type of refrigerant (e.g., R134a) and the quantity for the HVAC system.
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Known Issues
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Common Wear Items:
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Suspension components (bushings, ball joints), clutch wear (on manual transmissions), exhaust system corrosion, and potential for electrical gremlins due to the complex wiring.
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Engine Specific Concerns:
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The FSI engines can be sensitive to carbon buildup on intake valves. The 1.4 TDI can be prone to turbocharger issues if not maintained correctly.
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Aluminum Body Care:
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While lightweight and corrosion-resistant, aluminum body panels require specific repair techniques and materials, which are detailed in the manual.
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Paint And Body Care:
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Guidance on care and repair of the aluminum body panels and paintwork.
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