🏷️ Basic Information Identification Make: BMW Model: 330i Year: 2004 Codes Chassis Code: E46 Engine Code: M54B30 👋 Introduction Market Position Segment: Compact Executive Sedan Brand Perception: Sporty, luxurious, driver-focused, reliable performance Competitive Analysis Key Competitors: Audi A4, Mercedes-Benz C-Class, Lexus IS, Infiniti G35 Key Features Driving Dynamics: Renowned for balanced chassis, rear-wheel-drive dynamics, and engaging handling Engine Performance: Smooth and powerful inline-six engine Build Quality: High-quality interior materials and solid construction 📋 Manual Details Coverage Areas Primary Coverage: Full Service and Repair Secondary Coverage: Maintenance, Diagnostics, Rebuilding, Refurbishing, Restoration Page Count Estimated Pages: 1500+ Manual Type Type: Factory Service Manual / Workshop Manual Language Language: English Format Format: Digital (PDF) 📖 Manual Coverage Systems Covered Engine: Engine mechanical, engine management, fuel system, ignition system, cooling system, lubrication system, emissions control Transmission: Manual and Automatic transmission repair, overhaul, and service Drivetrain: Clutch, driveshafts, differential, axles Suspension: Front and rear suspension systems, steering components, wheel alignment Brakes: Brake system hydraulics, ABS, DSC, brake pad/rotor replacement, caliper service Electrical: Battery, charging system, starter, lighting, power windows, locks, mirrors, instrumentation, EWS (Immobilizer), DME (Engine Control Unit) Body: Body panels, doors, hood, trunk, interior trim, glass, seals HVAC: Heating, Ventilation, and Air Conditioning (HVAC) system service and repair Diagnostics: Diagnostic trouble codes (DTCs), testing procedures, troubleshooting charts, wiring diagrams Procedures Included Maintenance: Scheduled maintenance, fluid changes, filter replacements, inspections Repair: Component replacement, engine overhaul, transmission rebuild, brake system repair, electrical troubleshooting Troubleshooting: Step-by-step diagnostic procedures for common and uncommon issues Rebuilding: Detailed instructions for engine, transmission, and differential rebuilds Refurbishing: Guidelines for restoring worn or damaged components Restoration: Guidance for bringing a vehicle back to its original condition Technical Depth Depth: Comprehensive from basic maintenance to full engine and transmission rebuilds, including electrical schematics and diagnostic procedures 📊 Manual Specifications File Format Searchability: Searchable text for quick information retrieval Printability: Printable pages for on-the-go reference Print Quality Image Resolution: High-resolution diagrams and images Binding Type Binding: N/A (Digital Format) Paper Type Paper Quality: N/A (Digital Format) ⚙️ Engine Specifications Primary Engine Engine Type: Naturally Aspirated Inline 6-Cylinder (I6) Displacement: 3.0 Liters (2979 cc) Bore X Stroke: 84.0 mm x 89.6 mm Compression Ratio: 10.2:1 Valvetrain: Double Overhead Camshafts (DOHC), 24 valves, VANOS (Variable Valve Timing) Performance Horsepower: 225 hp @ 6100 rpm Torque: 214 lb-ft @ 3500 rpm Fuel System Fuel Delivery: Sequential Multi-Port Fuel Injection (SMPI) Fuel Type: Premium Unleaded Gasoline (91 octane or higher recommended) 🔧 Transmission Standard Type: 6-speed Manual (Getrag GS6-37BZ) Optional Type: 5-speed Automatic (Steptronic - GM 5L40-E) Features Manual Gear Ratios: 1st: 4.059, 2nd: 2.397, 3rd: 1.593, 4th: 1.208, 5th: 1.000, 6th: 0.854, Reverse: 3.456 Automatic Features: Driver-selectable modes (Sport, Manual) Fluid Specifications Manual Fluid: MTF LT-1 or LT-2 (BMW Genuine) Automatic Fluid: Dexron III or Dexron VI (GM) 📐 Dimensions Exterior Length: 177.4 inches (4506 mm) Width: 68.7 inches (1745 mm) Height: 55.5 inches (1410 mm) Wheelbase: 107.4 inches (2728 mm) Weights Curb Weight: 3351 lbs (1520 kg) (Manual), 3461 lbs (1570 kg) (Automatic) Gross Vehicle Weight Rating: 4553 lbs (2065 kg) Cargo Trunk Capacity: 11.7 cu ft (331 Liters) 🛡️ Safety Features Ratings NHTSA Front Driver: Good (5-star) NHTSA Front Passenger: Good (5-star) IIHS Moderate Overlap Front: Good Active Features ABS: Standard Anti-lock Braking System Dsc: Standard Dynamic Stability Control Traction Control: Standard Traction Control Passive Features Airbags: Front dual-stage airbags, front side-impact airbags, available front and rear head protection system (Air Curtain) Seatbelts: Three-point inertia-reel seatbelts with pretensioners and force limiters 💡 Technology Features Infotainment Head Unit: BMW Professional Radio, optional CD player, optional Navigation System (MKIV) Audio System: Standard 6-speaker system, optional Harman Kardon premium audio Driver Assistance Parking Sensors: Optional Park Distance Control (PDC) Connectivity Auxiliary Input: Not standard, aftermarket solutions may be available Bluetooth: Optional Bluetooth mobile phone integration 🔧 Maintenance Service Intervals Oil Change: BMW Condition Based Service (CBS) system, typically 10,000-15,000 miles or annually Spark Plugs: Every 60,000-100,000 miles (depending on plug type and condition) Coolant Flush: Every 2-4 years or 30,000-50,000 miles Brake Fluid Flush: Every 2 years Fluid Specifications Engine Oil: SAE 5W-30 Synthetic (BMW LL-01 approved) Coolant: BMW Blue Coolant (G48 Ethylene Glycol based) - 50/50 mix with distilled water Power Steering Fluid: Pentosin CHF 11S or equivalent Brake Fluid: DOT 4 (SAE J1703 or ISO 4925) Known Issues Vibration Misfire: Common on M54 engines due to VANOS solenoid, vacuum leaks, or ignition coil issues. Cooling System Failures: Plastic expansion tank cracking, water pump failure (especially plastic impeller), thermostat housing leaks. Oil Leaks: Valve cover gasket, oil pan gasket, oil filter housing gasket (O-ring). Suspension Wear: Control arm bushings, ball joints, rear shock mounts, subframe bushings. ABS Dsc Module: Failure of the ABS/DSC control module due to heat and vibration. Window Regulators: Motor failure or cable breakage in power window regulators. Clutch Release Bearing: Common wear item...