🏷️ Basic Information Identification Make: Audi Model: S6 Generation: C5 Year: 1999 Model Code: C5 Production Years C5 S6: 1999-2001 👋 Introduction Market Position Target Audience: Audi S6 C5 owners seeking to perform their own maintenance and repairs, independent repair shops, automotive technicians. Competitive Analysis Value Proposition: Provides factory-level repair information at a fraction of the cost of dealership services, empowering owners with knowledge and capability. Key Features Content Format: Step-by-step instructions, diagrams, illustrations, wiring schematics, specifications. Accuracy: Vehicle-specific information, not generic, mirroring dealership technician resources. Accessibility: Digital format for easy viewing and printing on multiple devices. 📋 Manual Details Coverage Areas Primary Coverage: Comprehensive Service, Repair, and Workshop Procedures Secondary Coverage: Troubleshooting, Diagnostics, Maintenance, Specifications Page Count Estimated Page Count: Varies by specific edition, but typically comprehensive for workshop manuals (often 1000+ pages for complete sets) Manual Type Type: Service and Repair Workshop Manual Language Language: English Format Format: PDF 📖 Manual Coverage Systems Covered Engine Mechanical: Complete overhaul, timing belt/chain, cylinder head, block, pistons, crankshaft, lubrication system, cooling system Engine Electrical: Ignition system, starting and charging system, ECU, sensors, wiring diagrams Emission Control: Catalytic converter, EGR system, evaporative emission control (EVAP) Fuel System: Fuel injection, fuel pump, injectors, fuel filter, fuel pressure regulator Clutch: Clutch operation, hydraulic system, clutch disc, pressure plate, release bearing Manual Transaxle: Gearbox removal and installation, internal components, lubrication Automatic Transaxle: Transmission identification, removal and installation, internal components, torque converter, electronic control unit (TCU), fluid service Driveshaft And Axles: CV joints, drive shafts, differential service Suspension System: Front and rear suspension components, springs, shock absorbers, control arms, alignment specifications Steering System: Power steering system, steering rack, tie rods, steering column Restraint System: Airbag system, seat belts, SRS module Brake System: Brake hydraulics, ABS system, brake pads, rotors, calipers, bleeding procedures Body Interior Exterior: Body panel removal and installation, doors, windows, trim, seats, interior components Body Electrical System: Lighting, power windows, central locking, alarm system, dashboard instruments, audio system, wiring diagrams HVAC System: Air conditioning, heating, ventilation, climate control unit, blower motor, refrigerant service Procedures Included Maintenance: Oil changes, filter replacements, spark plug replacement, fluid checks and top-offs, belt inspection Troubleshooting: Diagnostic charts, symptom-based troubleshooting guides, fault code interpretation Repair: Step-by-step repair procedures for all major systems, component replacement, rebuilds Diagnostics: Detailed diagnostic procedures for electronic control units (ECUs), sensors, and actuators Installation: Procedures for installing new or replacement parts Technical Depth Depth: Comprehensive: Covers everything from basic preventative maintenance to complex engine and transmission rebuilds, including detailed electrical diagnostics. User Level: Suitable for professional mechanics and technically inclined DIY owners. 📊 Manual Specifications File Format Compatibility: All versions of Windows and macOS Print Quality Printability: Yes, all pages are printable Binding Type Binding: N/A (Digital PDF format) Paper Type Paper Type: N/A (Digital PDF format) Software Requirements Reader: Adobe PDF Reader ⚙️ Engine Specifications Primary Engine Engine Code: AGN (most common for 1999 S6) Engine Type: Naturally Aspirated V8 Displacement: 4.2 Liters (4172 cc) Bore X Stroke: 84.5 mm x 93.0 mm Compression Ratio: 10.1:1 Performance Horsepower: 340 PS (335 bhp / 250 kW) @ 6600 rpm Torque: 420 Nm (310 lb-ft) @ 3200 rpm Fuel System Fuel Delivery: Multi-point Fuel Injection (MPI) Fuel Type: Premium Unleaded Gasoline (91 octane or higher) Engine Mechanical Valvetrain: DOHC (Dual Overhead Camshafts), 5 Valves per Cylinder Engine Management: Bosch Motronic ME 7.1 or similar 🔧 Transmission Standard Type: 5-speed Manual Transaxle Optional Type: 5-speed Tiptronic Automatic Transaxle (with Steptronic manual shifting mode) Features Drivetrain: Quattro All-Wheel Drive (Permanent) 📐 Dimensions Exterior Length: 4877 mm (192.0 in) Width: 1810 mm (71.3 in) Height: 1428 mm (56.2 in) Wheelbase: 2760 mm (108.7 in) Weights Curb Weight: Approx. 1750 kg (3858 lbs) 🛡️ Safety Features Ratings NHTSA Ratings: Not specifically rated by NHTSA for this model year in all categories, but generally reflects contemporary Audi safety standards. Active Features ABS: Yes, Anti-lock Braking System Esp: Yes, Electronic Stability Program (later models may refer to ESP, earlier may be called ABS Plus or similar) Passive Features Airbags: Front airbags for driver and passenger, side airbags (optional/standard depending on trim) Seatbelts: Three-point seatbelts with pretensioners, rear center seatbelt 💡 Technology Features Infotainment Audio System: Factory Audi Symphony or Concert audio systems, often with CD player and premium speaker options. Navigation: Optional Audi Navigation System (often RNS-D or similar). Driver Assistance Cruise Control: Standard cruise control system. Parking Sensors: Optional rear parking sensors may be fitted. Connectivity Phone Integration: Optional hands-free phone preparation, often with a cradle. 🔧 Maintenance Service Intervals Oil Change Interval: Typically 15,000 km (9,300 miles) or 1 year, whichever comes first (refer to manual for exact specifications based on oil type). Timing Belt Replacement: Around 90,000 - 120,000 km (56,000 - 75,000 miles). This is a critical maintenance item for the V8 engine and should be performed strictly according...