🏷️ Basic Information Identification Make: Audi Model: A6 Year: 1999 Generation Chassis Code: C5 (4B) 👋 Introduction Market Position Segment: Executive Sedan / Mid-size Luxury Target Audience: Affluent professionals and families seeking comfort, performance, and advanced technology. Competitive Analysis Competitors: BMW 5 Series, Mercedes-Benz E-Class, Lexus GS, Volvo S80 Key Features Design Philosophy: Understated elegance, build quality, quattro all-wheel-drive system. Platform: Volkswagen Group PL45 platform (shared with VW Passat B5) 📋 Manual Details Coverage Areas Coverage Scope: All models and all repairs A-Z Specificity: Vehicle specific, not generic User Base: Dealership technicians Page Count Estimated Page Count: High (typical for comprehensive factory manuals, often exceeding 1000 pages) Manual Type Type: Service and Repair Manual Language Language: English Format Format: Likely digital (PDF) or professionally printed 📖 Manual Coverage Systems Covered Powertrain: Engine, Fuel System, Ignition System, Exhaust System, Cooling System, Lubrication System Drivetrain: Transmission (Automatic & Manual), Drive Axles, Differentials, AWD System (Quattro) Chassis: Suspension (Front & Rear), Steering System, Brakes (Hydraulic & ABS), Wheels & Tires Electrical: Battery, Charging System, Starting System, Lighting, Instrumentation, Wiper/Washer Systems, Audio System, Power Accessories Body: Exterior Body Panels, Interior Trim, Doors, Windows, Seats, HVAC System, Body Control Modules Electronics: Engine Control Module (ECM), Transmission Control Module (TCM), ABS Control Module, Airbag System (SRS), Body Control Module (BCM) Procedures Included Maintenance: Scheduled maintenance, fluid changes, filter replacements, lubrication Diagnostics: Troubleshooting charts, diagnostic trouble codes (DTCs), symptom analysis, wiring diagrams Repair: Component removal and installation, adjustments, overhaul procedures, component testing Calibration: Sensor calibration, control module programming (where applicable) Technical Specifications: Torque values, clearances, tolerances, resistance values, voltage specifications Technical Depth Depth: Comprehensive, covering from basic fluid checks to full engine and transmission rebuilds Diagnostic Tools: References to diagnostic scan tools and procedures specific to Audi VAG-COM (VCDS) 📊 Manual Specifications File Format Digital Format: PDF (Searchable Text, Bookmarked Sections, Printable) Print Quality Print Quality: High resolution, clear diagrams and text Binding Type Binding Type: Perfect bound or spiral bound (for printed versions) Paper Type Paper Type: Durable, gloss or semi-gloss paper (for printed versions) ⚙️ Engine Specifications Primary Engine Engine Code Options: AEB (1.8T), AHA (2.8 V6), APB (2.7T V6 Bi-turbo), ATQ (2.8 V6) Performance 1.8T Displacement: 1.8 Liters Configuration: Inline 4-cylinder, turbocharged Horsepower: 150 hp @ 5700 rpm Torque: 155 lb-ft @ 1950 rpm Performance 2.8 V6 Displacement: 2.8 Liters Configuration: V6, naturally aspirated Horsepower: 190 hp @ 6000 rpm Torque: 206 lb-ft @ 3200 rpm Performance 2.7T V6 Displacement: 2.7 Liters Configuration: V6, twin-turbocharged Horsepower: 250 hp @ 5800 rpm Torque: 258 lb-ft @ 1800 rpm Fuel System Injection Type: Multi-point Fuel Injection (MPI) / Sequential Fuel Injection (SFI) Fuel Type: Premium Unleaded Gasoline (91+ Octane Recommended) 🔧 Transmission Standard Transmission Type 1.8T: 5-Speed Manual Transmission Type V6: 5-Speed Tiptronic Automatic Optional Transmission Type 1.8T Optional: 5-Speed Tiptronic Automatic Features Drive System Availability: Front-Wheel Drive (FWD) or quattro All-Wheel Drive (AWD) Tiptronic Functionality: Allows manual gear selection via shifter or steering wheel buttons (depending on model/option). 📐 Dimensions Exterior Length: Approx. 191.0 inches (4851 mm) Width: Approx. 70.5 inches (1791 mm) Height: Approx. 56.7 inches (1440 mm) Wheelbase: Approx. 109.1 inches (2771 mm) Weights Curb Weight 1.8T: Approx. 3373 lbs (1530 kg) Curb Weight 2.8 V6: Approx. 3571 lbs (1620 kg) Curb Weight 2.7T V6: Approx. 3770 lbs (1710 kg) 🛡️ Safety Features Ratings NHTSA Front Impact: 4/5 Stars (Driver/Passenger - specific data for 1999 varies) IIHS Side Impact: Acceptable (typically for the era, check specific reports) Active Features ABS: Standard Anti-lock Braking System (ABS) Traction Control: Optional Electronic Stability Program (ESP) on some models Passive Features Airbags: Frontal airbags (driver & passenger), optional side airbags Seatbelts: 3-point height-adjustable front seatbelts with pretensioners, rear seatbelts Rollover Protection: Reinforced body structure 💡 Technology Features Infotainment Audio System: Audi Symphony or Concert premium sound systems with CD player, optional cassette player, optional Bose sound system. Navigation: Optional factory navigation system with CD-ROM maps. Driver Assistance Cruise Control: Standard electronic cruise control. Parking Sensors: Optional rear parking sensors. Connectivity Phone Integration: Optional factory hands-free mobile phone preparation (often via cradle). 🔧 Maintenance Service Intervals Oil Engine Oil Change Interval: Typically 5,000-7,500 miles or 6-12 months, depending on driving conditions and oil type used (refer to manual for exact 'LongLife' or standard intervals). Service Intervals Filters Oil Filter Replacement: Replace with every oil change. Air Filter Replacement: Inspect every 15,000 miles, replace as needed (typically every 30,000 miles). Cabin Filter Replacement: Inspect every 15,000 miles, replace as needed (typically every 15,000-30,000 miles). Service Intervals Fluids Coolant Change Interval: Every 30,000 miles or 2 years. Brake Fluid Change Interval: Every 2 years, regardless of mileage. Transmission Fluid Change Interval Auto: Refer to manual; often 'lifetime' but recommended change every 60,000 miles for longevity. Specific G055005 or G052162 may be specified. Transmission Fluid Change Interval Manual: Refer to manual;...