🏷️ Basic Information Identification Make: BMW Model: Coupe Year: 2004 Codes Chassis Code: E46 (for applicable coupe models) 👋 Introduction Market Position Market Position: The 2004 BMW Coupe (part of the E46 generation) was positioned as a premium sporty coupe, competing with vehicles like the Mercedes-Benz CLK, Audi A4 Cabriolet (though primarily a coupe), and Lexus SC. Competitive Analysis Competitive Analysis: Known for its engaging driving dynamics, refined interior, and powerful inline-six engines, the E46 Coupe offered a blend of performance and luxury. Key Features Key Features: Excellent handling, powerful engine options, premium build quality, driver-focused cockpit. 📋 Manual Details Coverage Areas Manual Type: Full Service Repair Manual Language: English Format: Digital (likely PDF, implied by 'diagno...') Page Count Page Count: Estimated 1000+ pages (typical for full service manuals) 📖 Manual Coverage Systems Covered Engine: Detailed diagnosis, repair, rebuilding, performance tuning for all gasoline engine variants Transmission: Service and repair procedures for automatic and manual transmissions Brakes: ABS, DSC, brake system components, fluid changes, pad/rotor replacement Electrical: Wiring diagrams, component testing, module diagnosis, lighting, power accessories Suspension: Front and rear suspension, steering system, alignment specifications Body: Body panels, doors, windows, interior trim, convertible top mechanisms (if applicable) Climate Control: HVAC system diagnosis and repair, refrigerant service Fuel System: Fuel pump, injectors, fuel lines, evaporative emission control Exhaust System: Catalytic converter, mufflers, exhaust manifold, O2 sensors Cooling System: Radiator, water pump, thermostat, hoses, coolant specifications Diagnostic Troubleshooting: Extensive troubleshooting guides, symptom-based diagnostics, fault code explanations Procedures Included Maintenance: Scheduled maintenance, oil changes, filter replacements, inspections Repair: Step-by-step repair instructions for all major components and systems Rebuilding: Complete engine and transmission rebuilding procedures Refurbishment: Procedures for restoring worn or damaged components Restoration: Guidance for vintage restoration projects of the 2004 Coupe Diagnostics: Advanced diagnostic techniques and troubleshooting flowcharts Wiring Diagrams: Detailed electrical system wiring schematics Torque Specifications: Precise torque values for all fasteners Special Tools: Identification and usage of specialized BMW tools Technical Depth Depth: Comprehensive, covering basic maintenance to complete engine/transmission rebuilds 📊 Manual Specifications File Format File Format: Likely PDF (Portable Document Format) Print Quality Print Quality: High resolution, suitable for printing individual pages or the entire manual Binding Type Binding Type: N/A (Digital format) Paper Type Paper Type: N/A (Digital format) Searchability Searchability: Likely text-searchable PDF, enabling quick information retrieval ⚙️ Engine Specifications Primary Engine Engine Options: 3.0L Inline-6 Cylinder (N52 precursor, typically M54B30) Engine Displacement: 2979 cc (for 3.0L models) Engine Code: M54B30 Performance Horsepower: Approximately 225 hp @ 5900 rpm (for 3.0L M54B30) Torque: Approximately 214 lb-ft @ 3500 rpm (for 3.0L M54B30) Fuel System Fuel Delivery: Electronic Fuel Injection (EFI), Bosch Motronic ME 9.0 DME Fuel Type: Premium Unleaded Gasoline (91+ Octane) Engine Features Valve Train: Double Overhead Camshafts (DOHC), 24 valves, VANOS (Variable Valve Timing) 🔧 Transmission Standard Standard Transmission: 6-speed manual transmission (Getrag GS6-37BZ) Optional Optional Transmission: 5-speed Steptronic automatic transmission (GM A5S360R) Features Transmission Features: Rear-wheel drive (RWD), limited-slip differential available on some models. 📐 Dimensions Exterior Length: Approx. 177.1 inches (4498 mm) Width: Approx. 68.5 inches (1740 mm) Height: Approx. 53.5 inches (1359 mm) Weights Curb Weight: Approx. 3200 - 3400 lbs (depending on configuration) Wheelbase: Approx. 107.4 inches (2728 mm) 🛡️ Safety Features Ratings NHTSA Front Impact: 5-Star (for driver and front passenger in similar E46 models) IIHS Side Impact: Good (for comparable E46 models) Active Features Active Safety Features: Dynamic Stability Control (DSC), Anti-lock Braking System (ABS), Traction Control Passive Features Passive Safety Features: Front airbags, side-impact airbags, front seatbelt pretensioners, reinforced safety cell 💡 Technology Features Infotainment Infotainment System: Optional BMW Professional Radio with CD player, optional navigation system (MK4 unit), optional Harman Kardon audio system. Driver Assistance Driver Assistance Features: Park Distance Control (PDC) - optional. Connectivity Connectivity Options: Optional Bluetooth hands-free system. 🔧 Maintenance Service Intervals Oil Change Interval: BMW Condition Based Service (CBS) system dictates intervals, typically around 7,500-15,000 miles or annually, depending on driving conditions. Brake Fluid Flush: Every 2 years, regardless of mileage. Coolant Flush: Every 2-4 years or 30,000-50,000 miles (BMW Blue Coolant). Fluid Specifications Engine Oil Type: BMW Longlife-01 (LL-01) approved synthetic oil, SAE 0W-40 or 5W-30. Engine Oil Capacity: Approx. 6.5 quarts (6.0 liters) for 3.0L engines. Transmission Fluid Manual: BMW MTF LT-2 or equivalent (e.g., Red Line D4 ATF for some applications). Transmission Fluid Automatic: BMW ATF LT-3 or equivalent. Coolant Type: BMW Blue Antifreeze/Coolant (G48 specification). Known Issues Known Issues: Oil leaks from valve cover gasket and oil pan, VANOS solenoid issues, cooling system component failure (water pump, thermostat), CCV (Crankcase Ventilation) system clogging, subframe cracking (less common on coupes than sedans but possible), ABS/DSC sensor failures, power steering leaks. Part Numbers Oil Filter Part Number Example: Mann-Filter HU 925/4 X or Mahle OX 354/1 De Cabin Air Filter Part Number Example: Mann-Filter CU 2557 or Bosch 6041 📚...