🏷️ Basic Information Identification Make: BMW Model: M3 Year: 2004 Codes Chassis Code: E46 Engine Code: S54B32 👋 Introduction Market Position Positioning: The BMW M3 (E46) is a revered performance sedan/coupe, positioned as a driver-focused, track-capable, yet daily-drivable sports car. It competed with rivals like the Audi RS4 and Mercedes-Benz C55 AMG. Competitive Analysis Competitors: Key competitors during its production run included the Audi S4 (B6), Mercedes-Benz C55 AMG, and Porsche 911 (996 Carrera). Key Features Performance Focus: Renowned for its naturally aspirated S54 inline-six engine, balanced chassis, and engaging driving dynamics. Manual Value Proposition: Provides professional-grade repair and maintenance information essential for owners and technicians seeking to maintain the peak performance of the E46 M3. 📋 Manual Details Coverage Areas Systems Covered: Engine Mechanical, Engine Management, Fuel System, Cooling System, Lubrication System, Exhaust System, Clutch, Transmission (Manual SMG and Manual), Driveshaft, Differential, Axles, Suspension (Front and Rear), Steering System, Brakes (ABS, DSC), Electrical System (Wiring Diagrams, ECUs, Components), Bodywork, Interior Trim, HVAC, SRS Airbag System, Infotainment System. Page Count Estimated Pages: 1500+ Manual Type Type: Factory Service Manual / Repair Manual Language Language: English Format Format: PDF Download 📖 Manual Coverage Systems Covered Engine Mechanical: Detailed disassembly, inspection, and reassembly of the S54B32 engine, including VANOS, crankshaft, connecting rods, pistons, cylinder head, valves, camshafts, and timing. Engine Management: Engine control unit (DME), sensor diagnostics (e.g., crank position, cam position, MAF, O2), ignition system, fuel injection, idle control, and diagnostic trouble codes (DTCs). Transmission Smg: Operation, diagnostics, and repair of the Sequential Manual Gearbox (SMG), including hydraulic system, clutch actuator, gear selector, and control unit. Suspension Steering: Front and rear suspension components (struts, control arms, bushings), power steering system, steering rack, and alignment procedures. Brakes: Brake system components, hydraulic system, ABS and DSC modules, brake rotor and pad replacement, bleeding procedures. Electrical System: Comprehensive wiring diagrams for all circuits, fuse box locations, component testing, power distribution, lighting, instruments, and comfort electronics. Procedures Included Maintenance: Oil change intervals and specifications, filter replacement, spark plug replacement, coolant flush, brake fluid flush, differential fluid change, transmission fluid change. Troubleshooting: Systematic diagnostic procedures for common and uncommon problems, fault finding flowcharts, symptom-based troubleshooting guides. Repair: Detailed step-by-step repair instructions for virtually all components, including engine rebuild, transmission overhaul, suspension replacement, electrical component repair, and body panel repair. Diagnostics: Procedures for using diagnostic tools (e.g., ISTA/D, DIS), reading live data, performing actuator tests, and interpreting diagnostic trouble codes. Technical Depth Depth: Comprehensive, covering from basic maintenance to complete engine and transmission rebuilds, including detailed technical specifications and torque values. 📊 Manual Specifications File Format File Type: PDF Searchability: Searchable text for quick information retrieval. Print Quality Quality: High-resolution, suitable for printing individual sections or the entire manual. Binding Type Binding: N/A (Digital Download) Paper Type Paper: N/A (Digital Download) ⚙️ Engine Specifications Primary Engine Engine Type: Naturally Aspirated Inline 6-Cylinder Displacement: 3.2 Liters (3246 cc) Engine Code: S54B32 Bore X Stroke: 87.0 mm x 91.0 mm Compression Ratio: 11.5:1 Performance Horsepower: 333 hp @ 7900 rpm Torque: 262 lb-ft (355 Nm) @ 4900 rpm Redline: 8000 rpm Fuel System Fuel Delivery: Multi-point fuel injection (Bosch Motronic ME 7.2) Fuel Type: Premium Unleaded (91+ octane recommended) Valvetrain Type: DOHC, 4 valves per cylinder, Double VANOS 🔧 Transmission Standard Type: 6-speed Manual Optional Type: 6-speed SMG (Sequential Manual Gearbox) Features Clutch: Hydraulic actuation (Single plate dry clutch) Differential: Limited-slip differential (M Variable Lock) 📐 Dimensions Exterior Length: 177.7 inches (4513 mm) Width: 70.1 inches (1781 mm) Height: 54.1 inches (1374 mm) Wheelbase: 107.5 inches (2731 mm) Weights Curb Weight Manual: 3,420 lbs (1551 kg) Curb Weight Smg: 3,461 lbs (1570 kg) 🛡️ Safety Features Ratings NHTSA Front Driver: Good (not explicitly tested for this model year, but based on typical E46 performance) NHTSA Front Passenger: Good (not explicitly tested for this model year, but based on typical E46 performance) Active Features Traction Control: Dynamic Stability Control (DSC) Braking: Anti-lock Braking System (ABS), Electronic Brake-force Distribution (EBD), Brake Assist Passive Features Airbags: Front dual-stage airbags, front side-impact airbags Structure: Reinforced safety cell, crumple zones 💡 Technology Features Infotainment Head Unit: BMW Business CD or Professional CD with optional navigation system. Audio: Optional Harman Kardon sound system. Driver Assistance Cruise Control: Standard cruise control functionality. Connectivity Phone Integration: Optional Bluetooth hands-free system (available with specific Professional radios). 🔧 Maintenance Service Intervals Oil Change Interval: Variable (Condition Based Service - CBS), typically every 7,500-15,000 miles or annually. Air Filter Replacement: Approximately every 30,000 miles or as indicated by CBS. Spark Plug Replacement: Approximately every 60,000 miles (NGK BKR6EQUP recommended). Fluid Specifications Engine Oil Type: BMW Longlife-01 (LL-01) synthetic, 0W-40 or 5W-40 recommended. Capacity: 6.9 US quarts (6.5 liters). Coolant Type: BMW Blue Antifreeze/Coolant (G48 ethylene glycol based). 50/50 mix with distilled water. Brake Fluid Type: DOT 4 LV (Low Viscosity)...