🏷️ Basic Information Identification Make: Audi Model: S4 Chassis Code: B5 Generation: B5 (Second Generation) Applicable Years Range: 1999-2001 Engine Variant: 2.7L Biturbo V6 (APB, AGB) 👋 Introduction Market Position Positioning: Performance sedan in the luxury compact executive car segment. Competitive Analysis Key Competitors: BMW 3 Series (E46), Mercedes-Benz C-Class (W202/W203), Alfa Romeo 156. Key Features Performance Focus: The B5 S4 is renowned for its powerful twin-turbocharged V6 engine, quattro all-wheel-drive system, and sport-tuned suspension, making it a driver-focused performance machine. Diy Appeal: Designed to empower owners with the knowledge and procedures to perform maintenance and repairs themselves, saving costs and enhancing vehicle understanding. 📋 Manual Details Coverage Areas Primary Focus: Engine Service and Repair Included Systems: Engine, Transmission, Brakes, Electrical, Suspension, Steering, Cooling, Fuel Injection, Emission Control, HVAC, Engine Control Systems, Chassis, Body, Differential, Axles Page Count Estimated Page Count: Comprehensive (Exact count not provided, but implies extensive detail for all workshop procedures) Manual Type Type: Service Workshop Manual / Repair Manual Language Language: English Format File Format: PDF 📖 Manual Coverage Systems Covered Engine: Detailed procedures for engine disassembly, assembly, diagnostics, repair, and overhaul. Covers all internal and external engine components. Transmission: Service and repair procedures for the transmission, including removal, installation, internal components, and troubleshooting. Brakes: Diagnosis, repair, and maintenance of the braking system, including hydraulic components and ABS. Electrical: Comprehensive coverage of the electrical system, including wiring diagrams, component testing, and troubleshooting. Suspension Steering: Service and repair procedures for suspension and steering components, including alignment specifications. Cooling Fuel: Detailed information on the cooling system and fuel injection/fuel system components and operation. Emission HVAC: Procedures for the emission control system and the heater/air conditioning system. Engine Control: Diagnosis and repair of the engine control system (ECU), sensors, and actuators. Chassis Body: Information on chassis components and bodywork repair procedures. Restraint Interior: Service for restraint systems (airbags) and interior components. Differential Axle: Service and repair for differential and axle components. Procedures Included Diagnostic Procedures: Step-by-step troubleshooting guides for common and complex issues. Maintenance Tasks: Covers general maintenance, periodic lubrication, and fluid changes. Repair Instructions: Detailed instructions for component removal, installation, and repair. Rebuild Procedures: Comprehensive procedures for engine and transmission rebuilds. Technical Depth Depth: Workshop level. Suitable for DIY enthusiasts and professional mechanics. Includes detailed diagrams and specifications for all workshop procedures. 📊 Manual Specifications File Format Compatibility: All Versions of Windows & Mac Reader Requirement: Adobe PDF Reader Print Quality Printability: Printable (PDF format allows for printing of individual pages or the entire manual). Binding Type Binding: N/A (Digital Download - PDF) Paper Type Paper Type: N/A (Digital Download - PDF) ⚙️ Engine Specifications Primary Engine Engine Code Variants: APB (US Market), AGB (European Market) Engine Displacement Displacement: 2.7 liters (2671 cc) Engine Configuration Configuration: 2.7L 90-degree V6 Engine Aspiration Aspiration: Twin-Turbocharged Performance Horsepower: 250 hp @ 5800-6300 rpm Torque: 258 lb-ft (350 Nm) @ 1800-3500 rpm Fuel System Fuel Delivery: Multi-point Fuel Injection (MPI) with Bosch Motronic engine management. Engine Internals Cylinder Head: DOHC (Dual Overhead Camshafts) per bank, 5 valves per cylinder. Bore X Stroke: 81.0 mm x 86.4 mm Compression Ratio: 9.0:1 Cooling System Cooling Type: Liquid-cooled 🔧 Transmission Standard Type: 6-speed Manual Transmission (01E) Optional Type: 5-speed Tiptronic Automatic Transmission (01V) Features Drivetrain: quattro permanent all-wheel-drive system with Torsen center differential. 📐 Dimensions Exterior Length: 4576 mm (180.2 in) Width: 1794 mm (70.6 in) Height: 1403 mm (55.2 in) Wheelbase Wheelbase: 2609 mm (102.7 in) Weights Curb Weight Manual: Approx. 1620 kg (3571 lbs) Curb Weight Automatic: Approx. 1670 kg (3682 lbs) 🛡️ Safety Features Passive Features Airbags: Front dual-stage airbags, front side-impact airbags. Seatbelts: Three-point inertia-reel seatbelts with front belt tensioners. Active Features ABS: Anti-lock Braking System (ABS). Esp: Electronic Stability Program (ESP). Ratings NHTSA Front Impact: 4/5 stars (Driver/Passenger) - 2000 model year. 💡 Technology Features Infotainment Audio System: Audi Chorus or Concert CD/RDS audio systems, with optional Bose sound system. Navigation: Optional Audi Navigation System Plus (RNS-D) with integrated screen and CD-ROM based maps. Driver Assistance Parking Sensors: Optional rear parking sensors (Audi Parking System). Connectivity Phone Integration: Optional factory-installed Bluetooth or cellular phone preparation. 🔧 Maintenance Service Intervals Oil Change Interval: Typically every 5,000-7,500 miles (8,000-12,000 km) or 12 months, depending on driving conditions. Consult manual for specific recommendations. Timing Belt Replacement: Crucial: 60,000 - 90,000 miles (96,000 - 144,000 km) or 5-7 years. Failure can cause catastrophic engine damage. Fluid Specifications Engine Oil Type: SAE 0W-40 or 5W-40 Synthetic, API SN/CF or ACEA A3/B4 compliant. Check manual for exact specification. Coolant Type: G12 or G12+ antifreeze concentrate (pink/red color), mixed 50/50 with distilled water. Transmission Fluid Manual: API GL-4 or GL-5 synthetic gear oil (e.g., 75W-90). Consult manual for specific PN. Transmission Fluid Automatic: Audi G 052 162 A1/A2 or equivalent ATF. Consult manual for specific PN. Brake...