🏷️ Basic Information Identification Make: Audi Model: A6 Year: 2004 Codes Chassis Code: C5 👋 Introduction Market Position Value Proposition: Cost savings through DIY maintenance and informed repair discussions, equivalent to dealer resources. Competitive Analysis Differentiation: Vehicle-specific, not generic, providing exact dealer-level procedures and specifications. Key Features Accuracy And Clarity: Accurate, clear, and concise text combined with illustrations for ease of use. Manufacturer Origin: Written by the manufacturers (Audi), ensuring authenticity and accuracy. 📋 Manual Details Coverage Areas Manual Type: Service Repair Workshop Manual Language: English Format: PDF Digital Format Compatibility: PC, Mac, various phones and ebook readers (e.g., Kindle) Print Capability: Yes, all pages printable Delivery Method: Speed Download 📖 Manual Coverage Systems Covered General Information: Included Engine Mechanical: Detailed coverage for all engine variants. Engine Electrical: Includes wiring schematics and diagnostic procedures. Emission Control: Covers emission systems and troubleshooting. Fuel System: Comprehensive details on fuel delivery and injection. Clutch System: Included for manual transmission vehicles. Manual Transaxle: Detailed repair and maintenance procedures. Automatic Transaxle: Covers repair, maintenance, and diagnostics. Driveshaft Axle: Service and repair instructions. Suspension System: Detailed diagrams and repair steps. Steering System: Includes troubleshooting and repair procedures. Restraint System: Focus on airbags and seatbelt systems. Brake System: Detailed specifications and repair guidance. Body Interior Exterior: Covers bodywork, trim, and interior components. Body Electrical: Includes lighting, power accessories, and body control modules. HVAC: Heating, Ventilation, and Air Conditioning system service. Procedures Included Maintenance: Step-by-step instructions for routine maintenance. Troubleshooting: Diagnostic procedures for common and complex issues. Repair: Detailed repair instructions for all major components. Diagnostics: Procedures to identify and resolve faults. Wiring Schematics: Complete electrical diagrams. Illustrations Diagrams: Abundant visual aids for clarity. Technical Depth Depth Of Coverage: Comprehensive, covering procedures used by authorized technicians. Target Audience: Professional mechanics, independent service technicians, and knowledgeable DIY owners. 📊 Manual Specifications File Format File Type: PDF Searchability: Likely searchable within PDF reader, depending on source quality. Print Quality Print Readability: High, designed for clarity of text and diagrams. Binding Type Binding: Not applicable (digital format), but printable pages allow for local binding. Paper Type Paper Recommendation: Standard printer paper, 8.5x11 inch for North America, A4 for Europe, recommended for printing. ⚙️ Engine Specifications Primary Engine Engine Variants Covered: Likely covers multiple engine options available in the 2004 A6 C5. Common engines include 2.8L V6 (ALT), 3.0L V6 (ASN), 4.2L V8 (ASG), and potentially turbocharged 1.8T (AEB/APU/ARK) and 2.7T (AGB/APG). Specific engine codes should be detailed within the manual. Performance Horsepower And Torque: Detailed specifications for each engine variant will be present in the manual, crucial for diagnostic and repair accuracy. Fuel System Fuel Type: Petrol (Gasoline). Specific octane requirements and fuel system types (e.g., Multi-Point Fuel Injection - MPI) will be detailed. Injection System: Electronic Fuel Injection (EFI) with details on injectors, fuel pump, and pressure regulation. 🔧 Transmission Standard Transmission Types: The manual covers both Manual Transaxle System and Automatic Transaxle System, indicating availability of both for the A6 C5. Optional Drivetrain: Likely covers Front-Wheel Drive (FWD) and Audi's quattro All-Wheel Drive (AWD) systems. Features Automatic Transmission Features: Information on Tiptronic (sequential shifting) functionality may be included. 📐 Dimensions Exterior Body Styles: The C5 generation was available primarily as a sedan and an avant (wagon). Specific dimensions will be in the manual. Weights Curb Weight: Weight specifications will vary by engine and drivetrain, detailed in the manual. 🛡️ Safety Features Passive Features Airbag Systems: Coverage of front, side, and potentially curtain airbags. Seatbelts: Pretensioners and load limiters details. Active Features Braking Systems: ABS (Anti-lock Braking System) and EBD (Electronic Brake-force Distribution) are standard features. 💡 Technology Features Infotainment Audi Mmi: The 2004 model year may feature the early generation of Audi's Multi Media Interface (MMI) system, offering navigation, radio, and climate control management. Manual will detail operation and troubleshooting. Driver Assistance Parking Assistance: Optional parking sensors (front and rear) may be available, with diagnostic and repair procedures included. Connectivity Telephone Integration: Provisions for factory-installed or dealer-installed mobile phone systems may be present, with wiring and function details. 🔧 Maintenance Service Intervals Oil Change Interval: Typically 7,500 to 10,000 miles or 12 months, depending on driving conditions and oil specification. Manual will specify. Timing Belt Replacement: For V6 and V8 engines, a timing belt replacement is critical, often around 60,000-90,000 miles. This manual will provide the exact interval and procedure. Fluid Specifications Engine Oil: Specific viscosity grade (e.g., 5W-40, 0W-40) and API/ACEA specifications will be listed (e.g., VW 502 00 / 505 00, or newer standards like VW 504 00 / 507 00 for LongLife service). Coolant: Audi G12 or G12+ coolant (pink or purple colored) is typically specified, mixed with distilled water. Transmission Fluid Manual: Specific manual transmission fluid (MTF) viscosity and API rating, e.g., G 005 100 (for earlier models) or G 052 171 (for later models)....