🏷️ Basic Information Identification Make: Audi Model: B5 Year: 1999 Codes Platform Code: B5 👋 Introduction Market Position Market Segment: Premium Compact Executive Sedan/Wagon. Competitive Analysis Key Competitors: BMW 3 Series (E46), Mercedes-Benz C-Class (W202), Lexus IS (XE10), Acura TL (UA3). Key Features Design Philosophy: Audi's 'Vorsprung durch Technik' (Advancement through Technology) philosophy, emphasizing sophisticated engineering, refined interiors, and the iconic quattro all-wheel-drive system. Value Proposition: Offers a blend of performance, luxury, all-weather capability, and solid build quality, often at a competitive price point within its segment. 📋 Manual Details Coverage Areas Vehicle Variants Covered: All Audi B5 models produced for the 1999 model year, including A4 (sedan, Avant/wagon) and S4 variants. Page Count Estimated Page Count: Approximately 2000+ pages (typical for comprehensive factory service manuals of this era). Manual Type Manual Type: Factory Service Repair Manual (FSM) Language Language: English Format Format: Digital (PDF) - Likely searchable and printable. 📖 Manual Coverage Systems Covered Engine Systems: Engine mechanical (disassembly, assembly, specifications), engine control systems (ECU, sensors, actuators), fuel system (injection, pumps, injectors), ignition system (coils, plugs), cooling system (radiator, thermostat, fans), lubrication system (oil pump, filter, passages), exhaust system (catalytic converter, mufflers, sensors). Transmission Systems: Manual transmission (MT) service (clutch, gears, synchronizers), automatic transmission (AT) service (valve body, torque converter, solenoids, electronic control), quattro all-wheel-drive system (differentials, driveshafts, transfer case). Brake Systems: Hydraulic brake system (master cylinder, lines, calipers, pads, rotors), Anti-lock Braking System (ABS) components and diagnostics, parking brake system. Suspension Steering Systems: Front suspension (struts, control arms, ball joints, bushings), rear suspension (multi-link, shock absorbers, bushings), steering system (rack and pinion, power steering pump, steering column, tie rods), wheel alignment specifications. Electrical Electronics Systems: 12V electrical system (battery, alternator, starter), lighting systems (headlights, taillights, interior), wiring diagrams, fuse box layouts, instrument cluster, body control modules (BCM), comfort systems (HVAC, power windows, locks), audio systems, immobilizer system. Body Chassis Systems: Body construction (unibody), exterior body panels (doors, fenders, hood, trunk), interior trim, seals, hinges, latches, bumpers, body repair procedures, corrosion protection. Procedures Included Maintenance Procedures: Scheduled maintenance (oil changes, filter replacements, spark plugs, coolant flushes), fluid level checks, belt inspection and replacement, brake pad/rotor replacement, tire rotation. Repair Procedures: Detailed step-by-step instructions for engine disassembly/reassembly, transmission overhaul, suspension component replacement, brake system repairs, electrical component diagnosis and replacement, body panel repair and replacement. Troubleshooting Diagnostics: Diagnostic trouble codes (DTCs) for engine and electronic modules, symptom-based troubleshooting guides, electrical circuit testing procedures, use of diagnostic scan tools. Technical Depth Technical Depth: Comprehensive. Covers everything from routine maintenance to complete engine and transmission rebuilds, advanced electrical diagnostics, and bodywork. 📊 Manual Specifications File Format File Type: PDF Searchable: Yes (typical for professionally converted manuals) Print Quality Print Quality: High-resolution scans with clear text and sharp diagrams. Binding Type Binding Type: N/A (Digital Format) Paper Type Paper Type: N/A (Digital Format) ⚙️ Engine Specifications Primary Engine Engine Code Variants: Common engines include the 1.8T (AEB, APU, etc.), 2.8L V6 (ACK, AHL, etc.), and the 2.7T V6 (ARE, etc.) for the S4. Specific engine codes will be detailed within the manual. Performance 1.8T Horsepower: 150 hp @ 5700 rpm (typical for 1999 models, may vary slightly by region/specific tune). 1.8T Torque: 155 lb-ft @ 1770-4600 rpm (typical). 2.8 V6 Horsepower: 190 hp @ 6000 rpm (typical). 2.8 V6 Torque: 207 lb-ft @ 3200 rpm (typical). 2.7T V6 S4 Horsepower: 250 hp @ 5800-6500 rpm. 2.7T V6 S4 Torque: 258 lb-ft @ 1800-3600 rpm. Fuel System Fuel Delivery: Electronic Fuel Injection (EFI) with multi-point injection (MPI) or direct injection (DI) depending on engine variant. Recommended Fuel: Premium Unleaded Gasoline (91 octane or higher recommended for most variants, especially turbo). 🔧 Transmission Standard Standard Transmission: 5-speed Manual Transmission (e.g., 01A for FWD/quattro, 01E for quattro). Optional Optional Transmission: 5-speed Tiptronic Automatic Transmission (e.g., 01N for 1.8T/2.8L, 01M for 2.8L, 01 V for S4). Features Drivetrain Options: Front-Wheel Drive (FWD) and legendary quattro Permanent All-Wheel Drive (AWD). Quattro System: Torque-sensing Torsen center differential (for most quattro models) distributing power between front and rear axles. 📐 Dimensions Exterior Wheelbase: Approximately 103.3 inches (2624 mm) for A4. Length: Approximately 177.1 inches (4498 mm) for A4 Sedan, 178.3 inches (4529 mm) for Avant. Weights Curb Weight: Ranges from approximately 3100 lbs (1406 kg) for FWD models to over 3700 lbs (1678 kg) for S4 quattro Avant. Gross Vehicle Weight Rating: Details specific to each model variant will be found within the manual. 🛡️ Safety Features Ratings NHTSA Front Crash Test Rating: Likely 4 out of 5 stars (based on contemporary safety standards and testing for premium sedans). IIHS Top Safety Pick: The B5 platform generally performed well in IIHS tests for its era. Active Features ABS: Standard Anti-lock Braking System (ABS) on all models. Traction Control: Traction Control System (ASR - Anti-Slip Regulation) often standard or available, especially...