🏷️ Basic Information Identification Make: BMW Model: 3 Series Trim Levels: M3, 323i, 325i, 328i, 330i Year: 2004 Codes Chassis Codes: E46 (for 323i, 325i, 328i, 330i), E46 M3 👋 Introduction Market Position Market Position: The BMW 3 Series, particularly the E46 generation, was a benchmark in the compact executive sedan and coupe segment, renowned for its driving dynamics, sophisticated engineering, and premium appeal. The M3 variant represented the pinnacle of performance for the series. Competitive Analysis Competitive Analysis: Competed directly with rivals such as the Mercedes-Benz C-Class, Audi A4, Lexus IS, and Infiniti G35, often lauded for its superior handling and driver engagement. Key Features Key Features: Exceptional handling, balanced chassis, powerful and responsive engines, premium interior appointments, and advanced technology for its era. 📋 Manual Details Coverage Areas Coverage Areas: Engine, Transmission, Brakes, Suspension, Steering, Electrical System, Body, Interior, Cooling, Fuel, Exhaust, Emissions, Driveline Page Count Page Count: Estimated 2000-3000+ pages (typical for comprehensive factory service manuals) Manual Type Manual Type: Factory Service Repair Manual Language Language: English Format Format: PDF 📖 Manual Coverage Systems Covered Systems Covered: Engine Mechanical, Engine Management/Driveability, Fuel System, Cooling System, Exhaust System and Emission Controls, Ignition System, Manual Transmission, Automatic Transmission, Driveshaft and Final Drive, Brakes, Suspension, Steering, Electrical System, Body and Interior Procedures Included Procedures Included: Scheduled Maintenance, Routine Maintenance, Diagnostic Procedures, Repair Procedures, Component Removal and Installation, Overhaul Procedures, Wiring Diagrams, Troubleshooting Guides, Specifications and Tolerances Technical Depth Technical Depth: Comprehensive, covering everything from basic fluid changes and filter replacements to complete engine rebuilds, transmission overhauls, and complex electrical system diagnostics. 📊 Manual Specifications File Format File Format: PDF Print Quality Print Quality: High-resolution, suitable for clear printing of diagrams and text. Binding Type Binding Type: N/A (Digital Download) Paper Type Paper Type: N/A (Digital Download) Compatibility Compatibility: WINDOWS and MAC Requirements Requirements: Adobe PDF Reader Searchability Searchability: Likely text-searchable PDF for efficient information retrieval. ⚙️ Engine Specifications Primary Engine Engine 2004 323I: 2.5L Inline-6 (M52TU/M54B25) Engine 2004 325I: 2.5L Inline-6 (M54B25) Engine 2004 328I: 2.8L Inline-6 (M52TU) Engine 2004 330I: 3.0L Inline-6 (M54B30) Engine 2004 M3: 3.2L Inline-6 (S54) Performance Horsepower 323I: Approx. 170 hp Horsepower 325I: Approx. 184 hp Horsepower 328I: Approx. 193 hp Horsepower 330I: Approx. 225 hp Horsepower M3: Approx. 333 hp Torque 330I: Approx. 214 lb-ft Torque M3: Approx. 262 lb-ft Fuel System Fuel System: Sequential Multi-Point Fuel Injection (S<bos>MFI) Engine Control: Bosch Motronic Engine Management System 🔧 Transmission Standard Standard Transmission: 5-speed Manual (Getrag GS5-39DZ for most models, ZF S5-D320Z for M3) Optional Optional Transmission: 5-speed Steptronic Automatic Transmission (GM A5S320R for most models, SMG for M3) Features Transmission Features: Rear-wheel drive bias, close-ratio gearing on M3, driver-selectable modes on Steptronic and SMG 📐 Dimensions Exterior Wheelbase: Approx. 107.4 inches (2728 mm) Length Sedan: Approx. 177.4 inches (4505 mm) Length Coupe: Approx. 177.4 inches (4505 mm) Length M3: Approx. 180.0 inches (4572 mm) Weights Curb Weight Typical: Approx. 3200-3500 lbs (1450-1590 kg), M3 higher 🛡️ Safety Features Ratings NHTSA Front Impact Rating: Likely 4-star (based on contemporary testing for similar models) IIHS Front Offset Rating: Likely 'Good' (based on contemporary testing for similar models) Active Features Active Features: Anti-lock Braking System (ABS), Dynamic Stability Control (DSC), Traction Control System (ASR/ASC+T) Passive Features Passive Features: Front airbags, Side-impact airbags, Seatbelt pretensioners, Crumple zones 💡 Technology Features Infotainment Infotainment System: Optional Professional Navigation system with CD player, standard Hi-Fi audio system. Available satellite radio and CD changer. Driver Assistance Driver Assistance: Park Distance Control (PDC) optional, Cruise Control standard Connectivity Connectivity: Onboard computer for vehicle status and diagnostics, available Bluetooth integration for hands-free calling (with compatible phone modules). 🔧 Maintenance Service Intervals Oil Change Interval: BMW Condition Based Service (CBS) system, typically every 10,000-15,000 miles or as indicated by the vehicle's computer. Refer to manual for specifics. Brake Fluid Change Interval: Every 2 years, regardless of mileage. Coolant Change Interval: BMW advises lifetime coolant, but periodic checks and top-offs are recommended. A full flush/change might be considered around 100,000 miles or if issues arise. Fluid Specifications Engine Oil Specification: BMW Longlife-01 (LL-01) approved synthetic oil, typically SAE 0W-40 or 5W-40. Always verify with manual or oil cap. Transmission Fluid Manual: MTF LT-2 (Manual Transmission Fluid Longlife-01) Transmission Fluid Automatic: ETL-7045E or LT 71141 (Dexron III variants for earlier models, consult manual for precise spec). Coolant Specification: BMW Blue Antifreeze/Coolant (G48 specification) Known Issues Known Issues Cooling System: Plastic expansion tank cracking, water pump failure (especially the electric water pump on later M3s), thermostat housing leaks. Known Issues Engine: VANOS (Variable Valve Timing) system issues (rattling noise), oil consumption on high-mileage M54 engines, PCV system failure leading to rough idle. Known Issues Suspension: Front control arm bushings (tCABS) wear, rear subframe bushings separation, strut mount failure. Known Issues Electrical: Heater blower motor resistor failure (misfire codes), ABS/DSC...