Vehicle Class:
        
        
            Audi's compact hatchback, positioned as a premium and sporty alternative in its segment.
        
     
    
    
        
            Key Competitors:
        
        
            BMW 1 Series, Mercedes-Benz A-Class, Volkswagen Golf GTI.
        
     
    
    
        
            Design Philosophy:
        
        
            Combines Audi's renowned 'Vorsprung durch Technik' with a sporty and sophisticated aesthetic.
        
     
    
    
        
            Target Audience:
        
        
            DIY enthusiasts, independent repair shops, and Audi owners seeking to understand and maintain their vehicle's electrical systems.
        
     
 
    
    
    
        
            Manual Title:
        
        
            Audi A3 2004 Electrical Service Repair Manual
        
     
    
        
            Manual Type:
        
        
            Electrical Service and Repair Manual
        
     
    
    
    
    
        
            Delivery Method:
        
        
            Instant Digital Download
        
     
    
    
        
            Software Requirements:
        
        
            Adobe PDF Reader, WinZip
        
     
    
        
            Compatibility:
        
        
            All Versions of Windows & Mac
        
     
    
    
        
            Scope Of Manual:
        
        
            Focuses exclusively on the electrical systems, providing a deep dive into troubleshooting and repair for these specific components.
        
     
 
    
    
    
        
            Electrical Systems:
        
        
            Comprehensive coverage of all electrical systems within the Audi A3 2004.
        
     
    
    
        
            Repair Group 27:
        
        
            Battery, Starter, Generator (Alternator), Cruise Control Systems
        
     
    
        
            Repair Group 92:
        
        
            Windshield Wiper and Washer Systems
        
     
    
        
            Repair Group 94:
        
        
            Exterior Lights, Switches (Headlights, Taillights, Turn Signals, Fog Lights, Exterior Switches)
        
     
    
        
            Repair Group 96:
        
        
            Interior Lights, Switches (Dome Lights, Vanity Lights, Interior Switches, Door Switches)
        
     
    
        
            Repair Group 97:
        
        
            Wiring Diagrams, Harnesses, Connectors, Relays, Fuses
        
     
    
    
        
            Troubleshooting:
        
        
            Detailed diagnostic procedures and fault finding for electrical issues.
        
     
    
        
            Repair:
        
        
            Step-by-step repair instructions for electrical components and circuits.
        
     
    
    
        
            Diagnostic Capability:
        
        
            In-depth electrical diagnostics, including wiring schematics and component testing.
        
     
    
        
            Wiring Diagrams:
        
        
            Essential, detailed wiring diagrams for all circuits, color-coded and showing component locations.
        
     
    
        
            Connector Pinouts:
        
        
            Information on connector configurations and pin assignments for diagnostic purposes.
        
     
    
    
        
            Fuse Replacement:
        
        
            Detailed location and amperage ratings for all fuses, with replacement procedures.
        
     
    
        
            Relay Testing:
        
        
            Procedures for testing and replacing various relays within the electrical system.
        
     
    
        
            Component Replacement:
        
        
            Step-by-step guides for replacing common electrical components like alternators, starter motors, ignition switches, and power window motors.
        
     
 
    
    
    
        
            Engine Options 2004:
        
        
            Likely includes 1.6L FSI, 2.0L FSI, 2.0L TDI, and potentially the 1.8T or 3.2L V6 for performance variants (e.g., A3 3.2 quattro).
        
     
    
    
        
            Example Engine Power:
        
        
            2.0 FSI: Approx. 150 PS (148 hp; 110 kW)
        
     
    
        
            Example Engine Torque:
        
        
            2.0 FSI: Approx. 200 Nm (148 lb-ft)
        
     
    
    
        
            Fuel Delivery:
        
        
            Electronic Fuel Injection (EFI), potentially direct injection (FSI).
        
     
    
    
        
            Common Engine Codes 8P:
        
        
            Examples: AGU (1.8T), AUM (1.8T), BAM (1.8T), AZD (1.6 FSI), BCB (2.0 FSI), BMN (2.0 TDI).
        
     
 
    
    
    
        
            Gearbox Types:
        
        
            5-speed manual, 6-speed manual, and Audi's S tronic (DSG - Direct Shift Gearbox) automatic transmission.
        
     
    
    
        
            Drivetrain Options:
        
        
            Front-wheel drive (FWD) and Audi's quattro all-wheel drive (AWD) system.
        
     
    
    
        
            Dsg Fluid Spec:
        
        
            Specific DSG fluid (e.g., G 052 182 A2) is critical for S tronic transmissions.
        
     
 
    
    
    
        
            Length:
        
        
            Approx. 4.293 mm (169.0 in)
        
     
    
        
            Width:
        
        
            Approx. 1.765 mm (69.5 in)
        
     
    
        
            Height:
        
        
            Approx. 1.423 mm (56.0 in)
        
     
    
    
        
            Curb Weight:
        
        
            Varies by engine and drivetrain, typically starting around 1300 kg (2866 lbs).
        
     
 
    
    
    
        
            Audio System:
        
        
            Audi symphony or concert audio systems, often with CD player and optional satellite radio.
        
     
    
        
            Navigation:
        
        
            Optional Audi Navigation Plus system with MMI (Multi Media Interface) in later models of this generation.
        
     
    
    
        
            Parking Assistance:
        
        
            Optional rear parking sensors (Audi parking system).
        
     
    
    
        
            Lighting Technology:
        
        
            Xenon Plus headlights with LED daytime running lights (optional on some trims).
        
     
 
    
    
    
        
            Oil Change Interval:
        
        
            Typically every 15,000 km (9,300 miles) or 12 months, subject to Audi's flexible service schedule (LongLife service).
        
     
    
    
        
            Engine Oil Spec:
        
        
            VW 502 00 or VW 504 00 approved synthetic oil (e.g., 5W-30, 5W-40).
        
     
    
        
            Coolant Spec:
        
        
            G12 Plus or G13 coolant concentrate (pink/red) mixed with distilled water.
        
     
    
    
        
            Common Electrical Issues In A3:
        
        
            Potential issues with central locking actuators, window regulators, MAF sensor failures, ignition coil packs (especially on FSI engines), and ABS/ESP sensor faults.
        
     
    
        
        Common Issues Manual Relevance
    
 
    
        
            Electrical Component Failures:
        
        
            This manual directly addresses troubleshooting and repair for these common electrical failures.
        
     
 
    
    
    
        
            Audi History Overview:
        
        
            Audi, a German luxury automobile manufacturer, has a long history dating back to the early 20th century, known for innovation and quality.
        
     
    
    
        
            A3 Generation 2004:
        
        
            This 2004 model represents the second generation (Typ 8P) of the Audi A3, which debuted in 2003 and featured a significant redesign and technological update over its predecessor.
        
     
    
    
        
            Manufacturing Plant:
        
        
            Primarily manufactured at Audi's plant in Ingolstadt, Germany.