🏷️ Basic Information Identification Make: Audi Model: A4 Chassis Code: B5 Model Years Covered: 1997, 1998, 1999, 2000, 2001 👋 Introduction Market Position Segment: Compact Executive Sedan/Wagon Target Audience: Audi owners, independent repair shops, DIY enthusiasts Competitive Analysis Competitors: BMW 3 Series (E36/E46), Mercedes-Benz C-Class (W202), Volvo S70/V70, Lexus ES Key Features Design Philosophy: Audi's 'Vorsprung durch Technik' emphasizing quality, advanced engineering, and refined styling. Quattro: Availability of the legendary quattro all-wheel-drive system, a significant selling point for traction and stability. 📋 Manual Details Coverage Areas Manual Type: Service and Repair Manual Language: English Format: PDF Format Details: Digital PDF, printable, searchable 📖 Manual Coverage Systems Covered Engine: Comprehensive engine repair, diagnosis, and overhaul for all B5 variants Transmission: Manual and Automatic transmission service, repair, and troubleshooting Drivetrain: Front-Wheel Drive (FWD) and Quattro All-Wheel Drive (AWD) systems Suspension: Front and rear suspension component diagnosis, replacement, and alignment procedures Steering: Power steering system service, hydraulic component repair, and steering rack replacement Brakes: Disc brake systems (front and rear), ABS diagnostics, and brake fluid service Electrical System: Complete wiring diagrams, component testing, fuse box layouts, and diagnostic procedures for all electrical systems Fuel System: Fuel pump, injectors, fuel pressure regulator, and fuel tank service Cooling System: Radiator, water pump, thermostat, and coolant hose replacement and service Exhaust System: Exhaust manifold, catalytic converter, mufflers, and pipe replacement HVAC: Heating, Ventilation, and Air Conditioning system components, refrigerant service, and diagnosis Body And Chassis: Body panel repair, door mechanisms, interior trim, and chassis component service Diagnostic Troubleshooting: Extensive diagnostic flowcharts and troubleshooting guides for common and uncommon issues Procedures Included Maintenance: Scheduled maintenance, oil changes, filter replacements, spark plug changes Repair: Detailed step-by-step repair instructions for all major and minor components Rebuild: Engine and transmission rebuild procedures with torque specifications and clearances Adjustment: Wheel alignment, parking brake adjustment, door and hood alignment Replacement: Component replacement for sensors, actuators, belts, hoses, and more Diagnostics: Fault code retrieval, component testing, and troubleshooting of electronic systems Specifications: Torque values, clearances, fluid capacities, and diagnostic specifications Technical Depth Depth: Comprehensive: Covers routine maintenance to complete engine and transmission overhauls, including detailed electrical diagnostics. 📊 Manual Specifications File Format File Type: PDF Searchability: Full text search capability Print Quality: High resolution, suitable for printing individual pages or the entire manual. Accessibility: Viewable on any device with a PDF reader ⚙️ Engine Specifications Primary Engine 1 Engine Code: AEB Engine Type: 1.8L DOHC Inline 4-Cylinder Turbocharged (1.8T) Displacement: 1781 cc Bore X Stroke: 81 mm x 86.4 mm Compression Ratio: 9.5:1 Horsepower: 150 hp @ 5700 rpm Torque: 155 lb-ft @ 1950 rpm Fuel System: Electronic Fuel Injection (EFI), Bosch Motronic ME7.x (or similar) Ignition System: Distributorless Ignition System (DIS) with Coil-on-Plug (COP) Engine Management: Sophisticated ECU control with knock sensing and variable valve timing (VVT) on some later models. Optional Engine 1 Engine Code: AFC (or similar) Engine Type: 2.8L DOHC V6 (VR6 variant) Displacement: 2771 cc Horsepower: 172 hp @ 5500 rpm Torque: 199 lb-ft @ 3200 rpm Fuel System: Electronic Fuel Injection (EFI) 🔧 Transmission Standard Type: 5-Speed Manual Optional Type: Tiptronic 5-Speed Automatic Features Quattro: Available with quattro AWD on most engine variants and both transmission types. Fluid Type Manual: G50 SAE 75W-90 Synthetic Gear Oil (e.g., Audi G 052 171 A2) Automatic: ATF Dexron III/Mercon equivalent (e.g., Audi G 055 025 A2) 📐 Dimensions Exterior Sedan Length: 4516 mm (177.8 in) Width: 1733 mm (68.2 in) Height: 1415 mm (55.7 in) Wheelbase: 2613 mm (102.9 in) Exterior Wagon Length: 4575 mm (180.1 in) Width: 1733 mm (68.2 in) Height: 1444 mm (56.9 in) Wheelbase: 2613 mm (102.9 in) Weights Curb Weight Min: 1420 kg (3131 lbs) - 1.8T FWD Manual Sedan Curb Weight Max: 1640 kg (3616 lbs) - 2.8 quattro Auto Wagon 🛡️ Safety Features Ratings NHTSA Front Impact: Not directly available for this era, but Audi focused on advanced safety structures. IIHS: Generally considered good for its time, often rated 'Good' in frontal offset tests. Active Features ABS: Standard Anti-lock Braking System (ABS) Traction Control: Traction Control System (TCS) available on some models, integrated with ESP on later versions. Esp: Electronic Stability Program (ESP) became available/standard on later models. Passive Features Airbags: Driver and front passenger airbags standard. Side airbags optional/standard on higher trims. Seatbelts: Three-point inertia-reel seatbelts with pretensioners for front seats. Chassis: Advanced safety cage construction with crumple zones. 💡 Technology Features Infotainment Audio System: Audi Symphony or Concert audio systems with CD/cassette players and optional premium sound systems. Navigation: Optional factory navigation system (often monochrome or early color CRT). Driver Assistance Cruise Control: Standard cruise control system. Headlights: Halogen headlights with optional Xenon HID headlights on later models. Connectivity Phone Integration: Optional integrated hands-free phone systems (early cellular technology). 🔧 Maintenance Service Intervals Oil Change Interval: Every 7,500 - 10,000 miles...