🏷️ Basic Information Identification Make: Audi Model: A8 / S8 Year: 1999 Model Code: D2 Codes Engine Codes Typical: AEB, AWM (2.8L V6); ACK, ALG, AML, APB, ART, ASG (2.8L V6, 30v); AWE, AWD, AXB, AXC (4.2L V8, 32v); AHE, AQD, ARS, ASG (4.2L V8, 32v); AUW, AVN, AYS, BBD (4.2L V8, 40v); AZB, AZC (4.2L V8, 40v); BCY, BGH, BGM (4.2L V8, 40v); AQH, AQJ (4.0L V8 Bi-Turbo S8) Chassis Codes Typical: 4D2 (A8), 4D8 (S8) 👋 Introduction Market Position Market Position: High-end luxury sedan and performance sedan, targeting affluent consumers and performance enthusiasts. Competitive Analysis Competitive Analysis: Competed directly with other flagship luxury sedans from Mercedes-Benz (S-Class), BMW (7 Series), Lexus (LS), and Jaguar (XJ). Key Features Key Features: Advanced all-wheel drive (quattro), sophisticated suspension systems (Torsen differential, adaptive air suspension), powerful V8 engines, luxurious interiors, cutting-edge technology for its era. Key Features Additional: Audi Space Frame (ASF) aluminum chassis construction for enhanced rigidity and weight reduction, dual-pane acoustic glass for improved cabin quietness. 📋 Manual Details Coverage Areas Coverage Areas: Full Service, Repair, Troubleshooting, Diagnostics, Maintenance, Wiring Schematics, Specifications, Diagrams, Illustrations Page Count Page Count: Not specified, but implied to be comprehensive Manual Type Manual Type: Service Repair Workshop Manual Language Language: English Format Format: PDF Compatibility Compatibility: All Versions of Windows AND Mac Printability Printability: Yes, all pages are printable Requirements Requirements: Adobe PDF Reader Source Type Source Type: Manufacturer-produced service manual 📖 Manual Coverage Systems Covered Systems Covered: General Information, Engine Mechanical, Engine Electrical, Emission Control, Fuel System, Clutch System, Manual Transaxle, Automatic Transaxle, Driveshaft and Axle, Suspension System, Steering System, Restraint System, Brake System, Body (Interior and Exterior), Body Electrical System, Heating, Ventilation, Air Conditioning (HVAC) Systems Covered Additional: Air suspension system (optional on A8), hydraulic systems, chassis components, interior trim and upholstery, exterior body panels and trim. Procedures Included Procedures Included: Step-by-step repair instructions, diagnostic procedures, maintenance schedules, troubleshooting guides, component replacement, adjustments, system checks, wiring repairs, fluid changes Procedures Included Additional: Troubleshooting electrical circuits, diagnosing drivability issues, wheel alignment specifications, tire pressure recommendations, torque specifications for critical fasteners. Technical Depth Technical Depth: Detailed diagnostic procedures, complete overhaul instructions, component-level repair, electrical system tracing, technical specifications for all major systems Technical Depth Additional: Diagnostic trouble codes (DTCs) and their interpretations, electrical system schematics for all major circuits, component testing procedures. 📊 Manual Specifications File Format File Format: PDF Print Quality Print Quality: Printable from PDF, allowing for high-quality reproduction of diagrams and text Binding Type Binding Type: Digital (PDF), printable Paper Type Paper Type: N/A (digital format), but printable on standard paper ⚙️ Engine Specifications Primary Engine Primary Engine: 4.2L V8 (32-valve DOHC) and 4.0L V8 Bi-Turbo (S8) Performance Horsepower 4.2L V8 32V: Approx. 300-310 hp (depending on specific variant) Torque 4.2L V8 32V: Approx. 290-300 lb-ft Horsepower 4.0L V8 Bi-Turbo S8: Approx. 360 hp Torque 4.0L V8 Bi-Turbo S8: Approx. 400-420 lb-ft Fuel System Fuel System: Multi-point fuel injection (MPI), Electronic Engine Control (ECU) Engine Management Engine Management: Bosch Motronic (specific variant dependent) Emission Control Emission Control Systems: Catalytic converters, secondary air injection, EVAP system, EGR (depending on market/engine) Engine Configuration Engine Configuration: V6 and V8 engines, naturally aspirated and twin-turbocharged (S8) Valve Train Valve Train: DOHC (Dual Overhead Camshafts) with 4 valves per cylinder (32v for 4.2L V8, 40v for later 4.2L V8 and S8). 🔧 Transmission Standard Standard Transmission: 5-speed Tiptronic automatic transmission (often standard on A8, optional on S8 depending on market/spec) Optional Optional Transmission: 6-speed manual transmission (less common, often on S8 in some markets) Features Features: Torsen center differential (quattro AWD), electronic stability program (ESP), adaptive shift logic Fluid Type Automatic Fluid Type Automatic: G 052 162 A2 (or equivalent Dexron III/Mercon compatible ATF) Fluid Capacity Automatic Fluid Capacity Automatic: Approx. 8-10 liters (check manual for exact fill level) Fluid Type Manual Fluid Type Manual: G 052 171 A2 (or equivalent GL-4 SAE 75W-90 synthetic) Drivetrain Drivetrain: quattro permanent all-wheel drive 📐 Dimensions Exterior Length Exterior Length: Approx. 5034 mm (A8), 5072 mm (S8) Exterior Width Exterior Width: Approx. 1880 mm Exterior Height Exterior Height: Approx. 1420 mm Wheelbase Wheelbase: Approx. 2944 mm Weights Curb Weight: Approx. 1800-2000 kg (depending on engine and options) Gross Vehicle Weight: Not specified, but typically around 2500 kg Wheel Base Options Wheel Base Options: Standard wheelbase for A8, often longer wheelbase available on A8 (A8 L), S8 typically standard wheelbase. 🛡️ Safety Features Ratings Ratings: No standardized crash test ratings readily available from NHTSA/IIHS for this specific model year and region, but known for robust construction. Active Features Active Features: Anti-lock Braking System (ABS), Electronic Brake-force Distribution (EBD), Electronic Stability Program (ESP), Traction Control (ASR) Passive Features Passive Features: Front airbags, side airbags, optional front and rear head curtain airbags, seatbelt pre-tensioners, impact-absorbing body structure 💡 Technology Features Infotainment Infotainment: Audi...