🏷️ Basic Information Identification Make: Audi Model: S6 Generation: C5 (Type 4B) Model Years Covered: 1999, 2000, 2001, 2002, 2003 👋 Introduction Market Position Segment: Executive Sport Sedan Key Differentiator: Performance-oriented luxury sedan, blending Audi's renowned quattro all-wheel-drive system with potent V8 power. Competitive Analysis Direct Competitors: BMW 540i (E39), Mercedes-Benz E55 AMG (W210), Lexus GS430. Key Features Performance Focus: Designed for spirited driving with a powerful engine and sophisticated chassis. Luxury Appointments: High-quality interior materials, advanced features for its era, and a comfortable ride. Manual Purpose Aim: To provide technicians and owners with comprehensive information for accurate diagnostics, maintenance, and repair, ensuring optimal performance and longevity. 📋 Manual Details Coverage Areas Primary Coverage: Workshop Repair and Service for Audi S6 (C5) models from 1999-2003 Specific Systems: Engine, Transmission, Fuel System, Ignition, Lubrication System, Exhaust System, Electrical System, Bodywork Page Count Estimated Page Count: Detailed, extensive content exceeding typical manual limitations, likely hundreds of pages in print equivalent. Manual Type Type: Workshop Service Manual / Repair Manual Language Language: English Format Format: PDF 📖 Manual Coverage Systems Covered Engine Mechanical: Engine removal/installation, disassembly/assembly, cylinder head, engine block, crankshaft, camshaft, pistons, valves, timing system. Engine Management: Fuel injection system, ignition system, emissions control, cooling system, lubrication system, intake system. Transmission Drivetrain: Manual and Automatic transmission repair, clutch, driveshafts, differential, axle components. Suspension Steering: Front and rear suspension systems, steering components, power steering system, wheel alignment. Brakes: Brake system components (discs, pads, calipers), hydraulic system, ABS, parking brake. Electrical: Wiring diagrams, lighting system, charging system, starting system, battery, fuses, relays, interior and exterior electrical components, control modules. Body Chassis: Body panels, doors, windows, sunroof, bumpers, interior trim, chassis components, corrosion protection. Climate Control: HVAC system, air conditioning, heating, ventilation. Safety Restraints: Airbag system, seat belt mechanisms. Procedures Included Maintenance: Routine maintenance, tune-ups, oil changes, filter replacements, fluid checks and changes. Troubleshooting: Diagnostic procedures for common and complex issues, fault code interpretation. Repair Overhaul: Detailed step-by-step repair and overhaul procedures for all major vehicle systems. Component Replacement: Instructions for replacing individual components and sub-assemblies. Special Tools: Identification and usage instructions for specialized Audi tools required for specific repairs. Technical Depth Depth: Comprehensive, covering everything from basic routine maintenance to complete engine and transmission rebuilds. Target Audience: Professional automotive technicians and knowledgeable DIY enthusiasts. 📊 Manual Specifications File Format Format: PDF Searchability: Likely searchable text content within the PDF for quick information retrieval. Print Quality Printability: Yes, printable to facilitate on-site workshop use. Binding Type Binding: N/A (Digital PDF) Paper Type Paper Type: N/A (Digital PDF) ⚙️ Engine Specifications Primary Engine Engine Code: APB (for 2000-2003 MY, 4.2L V8); AKB/AJK/ARY (for 2.7L V6 Twin-Turbo in early models, though S6 typically denotes V8). Engine Type: 4.2L V8 (Naturally Aspirated, DOHC, 40 valves) Performance Horsepower: Approximately 340 hp @ 6600 rpm (for 4.2L V8) Torque: Approximately 317 lb-ft @ 3400 rpm (for 4.2L V8) Fuel System Injection Type: Multi-point Fuel Injection (MPI) Cooling System Coolant Type: G12 (or equivalent G12+ Purple coolant) Lubrication System Oil Type: SAE 0W-40 or 5W-40, API SJ/SL or ACEA A3/B3/B4 certified. Oil Capacity: Approximately 7.7 liters (8.1 US quarts) with filter change. Engine Management ECU Type: Bosch Motronic or similar advanced electronic engine control unit. 🔧 Transmission Standard Transmission Type: Tiptronic 5-speed automatic transmission. Optional Manual Option: While not explicitly stated for the S6 for these years, some Audi models had manual options. The manual indicates coverage for various transmissions. Features Drivetrain: quattro Permanent All-Wheel Drive Fluid Specifications Automatic Transmission Fluid: Audi/VW G 052 162 A2 (or equivalent Dexron III/Mercon) 📐 Dimensions Exterior Length: Approx. 4816 mm (189.6 in) Width: Approx. 1792 mm (70.6 in) Height: Approx. 1431 mm (56.3 in) Weights Curb Weight: Approx. 1770 kg (3902 lbs) Wheels Tires Wheel Bolt Pattern: 5x112 Standard Tire Size: 245/40 R18 🛡️ Safety Features Ratings Crash Test Information: Specific ratings for this era are less standardized than modern tests; refer to period Euro NCAP or NHTSA data if available. Known for robust build quality. Active Features Traction Control: ASR (Anti-Slip Regulation), integrated with ABS. Stability Control: ESP (Electronic Stability Program) Passive Features Airbags: Frontal airbags for driver and passenger, side airbags. Seat Belts: Pretensioning front seat belts, three-point rear seat belts. 💡 Technology Features Infotainment Audio System: Premium sound systems (e.g., Bose) were often optional or standard on S models. Navigation: Optional factory navigation system available. Driver Assistance Cruise Control: Standard cruise control functionality. Connectivity Phone Integration: Early Bluetooth or cellular phone preparation kits were available. 🔧 Maintenance Service Intervals Oil Change Interval: Typically every 7,500 to 10,000 miles (12,000 to 16,000 km) or annually, depending on driving conditions and oil used. Timing Belt Replacement: For models with a timing belt (check specific engine: APB is chain-driven, early models might have belt), interval typically around 60,000 - 100,000 miles. Spark Plug Replacement:...