🏷️ Basic Information Identification Make: BMW Model: 325xi Year: 2003 Codes Chassis Code: E46 Engine Code Prefix: M54 👋 Introduction Market Position Segment: Compact Executive Sedan/Wagon Usp: Sporty handling, luxury features, rear-wheel-drive bias (with xDrive all-wheel-drive variant) Competitive Analysis Key Competitors: Audi A4, Mercedes-Benz C-Class, Lexus IS, Infiniti G35 Key Features Powertrain: Renowned BMW inline-six engines, optional xDrive all-wheel-drive system Driving Dynamics: Balanced chassis, precise steering, engaging driving experience Interior Appointments: Driver-focused cockpit, premium materials, ergonomic design 📋 Manual Details Coverage Areas Comprehensive Coverage: Full service and repair instructions Page Count Estimated Page Count: Approx. 1500-2500 pages (typical for comprehensive BMW workshop manuals of this era) Manual Type Type: Service Repair Workshop Manual Language Language: English Format Format: Likely PDF (digital format) or Printed Book 📖 Manual Coverage Systems Covered Engine Mechanical: Engine assembly, disassembly, cylinder head, crankshaft, pistons, connecting rods, lubrication system, cooling system Engine Management: Fuel injection, ignition system, emission control systems, engine control unit (ECU) diagnosis Transmission: Manual transmission (SMG optional), automatic transmission (Steptronic), clutch, torque converter, transmission control Drivetrain: All-wheel drive (xDrive) system, front and rear differentials, drive shafts, CV joints Suspension: Front suspension (MacPherson strut, multi-link), rear suspension (multi-link), shock absorbers, springs, control arms, subframes Brakes: Hydraulic brake system, ABS (Anti-lock Braking System), DSC (Dynamic Stability Control), brake discs, pads, calipers, brake lines, parking brake Steering: Power steering system, steering rack, steering column, wheel alignment Electrical System: Battery, charging system (alternator), starter motor, lighting system, power windows, locks, mirrors, wipers, horn Body And Interior: Body panels, doors, hoods, trunk, bumpers, interior trim, seats, airbags, climate control system (HVAC) Body Electronics: Central body electronics module (ZKE), remote control, alarm system, immobilizer Infotainment: Radio, CD player, navigation system (optional), speaker system Procedures Included Routine Maintenance: Oil changes, filter replacements, spark plug replacement, fluid checks and top-offs, brake inspections Troubleshooting: Diagnostic procedures for common and complex issues, symptom-based troubleshooting guides Repair Procedures: Step-by-step instructions for component removal, repair, and reinstallation Diagnostic Trouble Codes: Explanation and interpretation of OBD-II diagnostic trouble codes (DTCs) Wiring Diagrams: Detailed electrical wiring diagrams for all vehicle systems Specifications And Tolerances: Torque specifications, clearances, fluid capacities, and other critical measurements Technical Depth Depth Of Information: Comprehensive, covering everything from basic maintenance to complete engine and transmission rebuilds Diagnostic Capabilities: Advanced diagnostic procedures, including the use of BMW-specific diagnostic tools (e.g., DIS, ISTA/E) Repair Complexity: Suitable for both DIY enthusiasts and professional mechanics 📊 Manual Specifications File Format Digital Format Details: Searchable text, hyperlinked chapters, bookmark functionality (typical for high-quality PDFs) Print Quality Print Quality Description: High-resolution diagrams and clear text, suitable for printing Binding Type Binding Description: Professional binding (e.g., perfect bound, spiral bound) for durability if printed Paper Type Paper Type Description: Durable, high-quality paper stock resistant to workshop conditions if printed ⚙️ Engine Specifications Primary Engine Engine Code: M54B30 Engine Type: Naturally Aspirated Inline 6-Cylinder Displacement: 2979 cc (3.0 Liters) Bore X Stroke: 84.0 mm x 89.6 mm Compression Ratio: 10.2:1 Valve Train: DOHC, 24 Valves, Double VANOS (Variable Valve Timing) Performance Horsepower: 225 hp @ 6000 rpm Torque: 214 lb-ft (290 Nm) @ 3500 rpm Fuel System Fuel Delivery: Sequential Multi-Point Fuel Injection (MPI) Fuel Type: Premium Unleaded Gasoline (91 Octane or higher recommended) Ignition System: Distributorless Electronic Ignition (DIS) with Coil-on-Plug (COP) ignition coils 🔧 Transmission Standard Type: 5-Speed Manual Transmission (Getrag Type G) Optional Type: 5-Speed Steptronic Automatic Transmission (GM 5L40-E) Type Sport: 5-Speed SMG (Sequential Manual Gearbox) - less common for 325xi Features All Wheel Drive: xDrive permanent all-wheel-drive system with viscous coupling and planetary gear center differential Automatic Features: Steptronic manual shifting mode 📐 Dimensions Exterior Length: 177.4 inches (4506 mm) Width: 68.7 inches (1745 mm) Height: 55.5 inches (1410 mm) Wheelbase: 107.0 inches (2718 mm) Front Track: 58.7 inches (1491 mm) Rear Track: 59.2 inches (1504 mm) Cargo Trunk Volume Sedan: 11.7 cubic feet (331 Liters) Weights Curb Weight Manual: 3516 lbs (1595 kg) Curb Weight Automatic: 3571 lbs (1620 kg) Gross Vehicle Weight Rating: 4519 lbs (2050 kg) 🛡️ Safety Features Ratings NHTSA Frontal Crash Test: 5-Star (Driver), 4-Star (Passenger) IIHS Frontal Offset: Good Active Features Traction Control: ASC+T (Automatic Stability Control + Traction) standard Stability Control: DSC (Dynamic Stability Control) standard Antilock Brakes: ABS (Anti-lock Braking System) standard All Wheel Drive Benefit: Enhanced traction and stability, especially in adverse weather conditions Passive Features Airbags: Frontal airbags (driver and passenger), front side-impact airbags, front and rear head protection system (optional/standard based on market) Seatbelts: Pretensioning front seatbelts with force limiters Chassis Design: High-strength steel passenger cell, crumple zones 💡 Technology Features Infotainment Head Unit: BMW Business CD/RDS or Professional CD/RDS radio/cassette, optional CD changer Navigation: Optional MKIV (Mk4) navigation system with DVD-ROM maps Driver Assistance Cruise Control: Standard cruise control system Connectivity Audio Inputs: Typically auxiliary inputs are not standard on this model year, though...