🏷️ Basic Information Identification Make: BMW Model: 3 Series Model Variant: 325i Year: 2003 Codes Chassis Code: E46 👋 Introduction Market Position Market Segment: Entry-luxury compact executive sedan and coupe Competitive Analysis Key Competitors: Mercedes-Benz C-Class, Audi A4, Lexus IS, Acura TL, Infiniti G35 Key Features Driving Dynamics: Renowned for balanced handling, RWD platform, and responsive steering Engine Performance: Smooth and powerful inline-six engines Interior Quality: Premium materials and driver-focused cockpit design 📋 Manual Details Coverage Areas Coverage Scope: Complete factory service and repair Page Count Estimated Page Count: 1500+ Manual Type Manual Type: Factory Service Repair Manual Language Language: English Format Format: Downloadable PDF 📖 Manual Coverage Systems Covered Engine: M54B30 (3.0L Inline-6) diagnosis, repair, overhaul, timing, cooling, lubrication, fuel injection, ignition Transmission Manual: Getrag 420G (5-speed) repair, clutch system, linkages, fluid specifications Transmission Automatic: GM 5L40-E (5-speed) repair, valve body, torque converter, electronic control, fluid specifications Drivetrain: Rear-wheel drive, driveshaft, differential, half-shafts, universal joints Suspension: Front MacPherson struts, rear multi-link, springs, dampers, control arms, bushings, alignment specifications Brakes: Front and rear discs, ABS, DSC (Dynamic Stability Control), hydraulic system, caliper overhaul, rotor replacement, fluid specifications Steering: Hydraulic power steering, steering rack, pump, fluid specifications Electrical System: 12V system, battery, alternator, starter, wiring diagrams, fuse locations, relays, lighting (headlights, taillights, interior), horn Body: Exterior panels, doors, hood, trunk, bumpers, glass, seals, interior trim, seats, headliner, sound deadening HVAC: Climate control system, A/C compressor, refrigerant, blower motor, evaporator, heater core, ducting, diagnostic procedures Safety Systems: Airbags (SRS), seatbelt pre-tensioners, crash sensors, diagnostic and reset procedures Infotainment: Radio, CD player, amplifier, speaker system, navigation system (if equipped), antenna system Procedures Included Maintenance: Oil changes, filter replacements, fluid checks and top-offs, spark plug replacement, belt inspection/replacement, brake pad/rotor replacement, tire rotation Diagnostics: Troubleshooting guides for common issues, OBD-II code interpretation, component testing, diagnostic tool usage Repair: Engine component replacement, transmission overhaul, brake caliper rebuilding, suspension arm replacement, electrical component repair, body panel repair Rebuilds: Engine internal component rebuilding, transmission rebuilding, differential overhaul Assembly Disassembly: Step-by-step guides for component removal and installation Special Tools: Identification and usage of BMW-specific tools required for various procedures Technical Depth Depth Level: Comprehensive factory-level detail, suitable for professional technicians and advanced DIYers 📊 Manual Specifications File Format File Format: PDF (Portable Document Format) Print Quality Print Quality: High-resolution, suitable for printing all pages or selected sections Binding Type Binding Type: N/A (Digital Download) Paper Type Paper Type: N/A (Digital Download) Searchability Searchable Text: Yes, text is searchable within the PDF document ⚙️ Engine Specifications Primary Engine Engine Code: M54B30 Engine Type: Naturally Aspirated Inline-6 (I6) Displacement: 2979 cc (3.0 Liters) Bore X Stroke: 84.0 mm x 89.6 mm Compression Ratio: 10.2:1 Valvetrain: Double VANOS (Variable Valve Timing), DOHC (Dual Overhead Camshafts), 24 valves Performance Horsepower: 225 hp @ 5900 rpm Torque: 214 lb-ft (290 Nm) @ 3500 rpm Fuel System Fuel Type: Premium Unleaded Gasoline (91+ Octane Recommended) Fuel Delivery: Sequential Electronic Fuel Injection (SEFI), Bosch Motronic ECU 🔧 Transmission Standard Transmission Type: 5-speed Manual (Getrag 420G) Optional Transmission Type: 5-speed Automatic (GM 5L40-E) with Steptronic Features Clutch: Hydraulically actuated single dry plate clutch Differential: Limited Slip Differential (LSD) optional on some models 📐 Dimensions Exterior Length: 177.4 inches (4506 mm) Width: 68.7 inches (1745 mm) Height: 55.7 inches (1415 mm) Wheelbase: 107.4 inches (2728 mm) Front Track: 57.7 inches (1466 mm) Rear Track: 58.6 inches (1488 mm) Weights Curb Weight: 3417 lbs (1550 kg) approx (manual transmission) Gross Vehicle Weight Rating: 4564 lbs (2070 kg) Towing Capacity: Not Recommended Cargo Trunk Volume: 11.1 cu ft (314 Liters) 🛡️ Safety Features Ratings NHTSA Front Crash Rating: 4 Stars (Driver), 4 Stars (Passenger) IIHS Side Impact Rating: Good (for models equipped with side airbags) Active Features ABS: Standard (Anti-lock Braking System) Dsc: Standard (Dynamic Stability Control) / Traction Control Brake Assist: Standard (Hydraulic Brake Booster) Passive Features Airbags: Frontal airbags (driver/passenger), Optional front side-impact airbags, Optional head protection system (HPS) Seatbelts: 3-point inertia-reel seatbelts with front pretensioners and force limiters Child Safety: LATCH (Lower Anchors and Tethers for Children) system, Rear child safety door locks 💡 Technology Features Infotainment Audio System: Standard AM/FM/CD player with 6-speaker system. Optional premium Hi-Fi system with amplifier and more speakers. Optional Harman Kardon system. Navigation: Optional factory navigation system (MKIII or MKIV professional navigation system). Driver Assistance Parking Sensors: Optional rear Park Distance Control (PDC). Connectivity Bluetooth: Optional BMW Assist with Bluetooth integration (often requires cradle). Other Technology Cruise Control: Standard electronic cruise control. Rain Sensing Wipers: Optional automatic rain-sensing windshield wipers. Xenon Headlights: Optional Xenon headlights with automatic leveling. 🔧 Maintenance Service Intervals Oil Change Interval: BMW Condition Based Service (CBS) system typically recommends oil changes every 10,000-15,000 miles or 12-24 months, depending on driving conditions. Refer to manual for specific CBS reset procedures. Spark Plug Replacement: Approximately 100,000 miles (refer...