🏷️ Basic Information Identification Make: Audi Model: A4 Year: 2004 Codes Chassis Code: B6 (8E) 👋 Introduction Market Position Positioning: Premium compact executive sedan and wagon, competing with BMW 3 Series, Mercedes-Benz C-Class, and Lexus IS. Competitive Analysis Competitors: BMW 3 Series (E46), Mercedes-Benz C-Class (W203), Lexus IS (XE10/XE20), Volvo S60, Saab 9-3. Key Features Audi Design: Known for refined interior quality, sophisticated design, available Quattro all-wheel drive, and strong performance from its turbocharged engines. Manual Advantage: Provides specific, vehicle-accurate repair procedures, unlike generic guides, ensuring correct and efficient maintenance and repairs. 📋 Manual Details Coverage Areas Coverage: All models and all repairs A-Z for the 2004 Audi A4 (B6-8E) Page Count Pages: Approximately 2000+ Manual Type Type: Service and Repair Manual Language Language: English Format Format: Digital (likely PDF) 📖 Manual Coverage Systems Covered Engine Systems: Engine mechanical, lubrication, cooling, fuel, exhaust, engine management, ignition, emissions control Transmission Systems: Manual transmission (5-speed, 6-speed), Automatic transmission (Tiptronic - 5-speed), drivetrain, clutch, drive shafts, differentials Brakes: Hydraulic system, ABS, ESP, brake pads, rotors, calipers, parking brake Suspension Steering: Front suspension (multi-link), rear suspension, steering column, power steering system, wheel alignment Electrical Systems: Battery, charging system, starter, lighting, instruments, body electronics, comfort systems, infotainment, diagnostics (OBD-II) Body Chassis: Body structure, exterior panels, interior trim, climate control, airbags, body sealing Procedures Included Maintenance: Scheduled maintenance, oil changes, filter replacements, fluid checks and changes, spark plug replacement, belt replacement Diagnostics: Troubleshooting guides, symptom-based diagnostics, fault code interpretation, wiring diagrams Repair: Component removal and installation, overhaul procedures, component testing, calibration Technical Data: Torque specifications, fluid capacities, electrical specifications, diagnostic connector location Technical Depth Depth: Comprehensive, dealer-level technical information covering routine maintenance to major component overhauls and electrical system diagnosis. 📊 Manual Specifications File Format File Format: Likely PDF with searchable text and embedded graphics/diagrams. Print Quality Quality: High-resolution graphics, clear diagrams, and readable text, mimicking original dealership manuals. Binding Type Binding: N/A (Digital Format) Paper Type Paper: N/A (Digital Format) ⚙️ Engine Specifications Primary Engine Engine Options: 2.0L FSI (130 hp), 1.8L Turbocharged (170 hp), 2.0L Turbocharged TFSI (180 hp), 3.0L V6 (220 hp), 4.2L V8 (340 hp - S4 variant). Performance Hp Range: 130 hp to 340 hp depending on engine variant. Torque Range: 180 lb-ft to 317 lb-ft depending on engine variant. Fuel System Injection Type: Multi-point fuel injection (MPI) and Fuel Stratified Injection (FSI) for gasoline engines. Engine Management ECU Type: Bosch Motronic or similar, with detailed diagnostic procedures in the manual. 🔧 Transmission Standard Transmission Type Std: 5-speed Manual Optional Transmission Type Opt: 5-speed Tiptronic Automatic (CVT on some early models, replaced by conventional auto) Features Drive System: Front-wheel drive (FWD) and Quattro all-wheel drive (AWD) available. Fluid Specs Automatic Transmission Fluid: G 055 005 / G 055 025 or equivalent approved fluid (refer to specific model/year for exact type). Manual Transmission Fluid: G 052 171 A1/A2 or equivalent. 📐 Dimensions Exterior Length Sedan: Approx. 4574 mm (179.9 in) Width: Approx. 1766 mm (69.5 in) Height Sedan: Approx. 1425 mm (56.1 in) Wheelbase: Approx. 2650 mm (104.3 in) Weights Curb Weight Range: Approx. 1450 kg - 1650 kg (3197 lbs - 3638 lbs) depending on engine and drivetrain. 🛡️ Safety Features Ratings NHTSA Front Impact: 5-Star (for driver and front passenger) IIHS Side Impact: Good (for models tested) Active Features Stability Control: Standard Electronic Stability Program (ESP) on most models. Traction Control: Standard Traction Control System (TCS). Brakes Assistance: Anti-lock Braking System (ABS), Electronic Brake-force Distribution (EBD). Passive Features Airbags: Frontal airbags, side airbags, optional head curtain airbags. Seatbelts: Three-point inertia-reel seatbelts with front pretensioners and force limiters. 💡 Technology Features Infotainment Stereo System: Audi Symphony or Concert CD/Radio systems with optional navigation. Manual covers head unit removal, speaker replacement, and antenna troubleshooting. Climate Control: Manual or automatic climate control systems. Manual details blower motor, evaporator, heater core, and AC system service. Driver Assistance Parking Sensors: Optional front and rear parking sensors (Audi parking system). Manual assists in diagnosing sensor faults. Connectivity Cruise Control: Standard cruise control. Manual covers cruise control module and switch diagnostics. Diagnostics OBD Ii: On-Board Diagnostics II (OBD-II) compliant. Manual provides location of the diagnostic port and interpretation of common fault codes (DTCs). 🔧 Maintenance Service Intervals Oil Change Interval: Typically every 10,000 miles or 1 year, using synthetic oil. Specific interval may vary by engine and driving conditions (refer to manual for exact recommendations). Timing Belt Chain: Engines with timing chains (e.g., 3.0L V6, 4.2L V8) are designed to last the life of the engine. Engines with timing belts (e.g., 1.8T, 2.0 FSI) require replacement at specific intervals (e.g., 70,000-100,000 miles), a critical procedure covered in detail. Fluid Specifications Engine Oil Type: Synthetic SAE 0W-30 or 5W-30 meeting VW 502 00 specification. Coolant Type: G 12 Plus (Pink) or G 12++, a silicate-free, long-life antifreeze. Check...