🏷️ Basic Information Identification Make: BMW Model: 325i Model Variant: 325 Codes Chassis Code: E46 Engine Code: M54B25 👋 Introduction Market Position Segment: Compact Executive Sedan/Coupe Competitive Analysis Key Competitors: Mercedes-Benz C-Class, Audi A4, Lexus IS300, Acura TL Key Features Driving Dynamics: Renowned for balanced chassis, rear-wheel drive dynamics, and engaging driving experience. Engine Type: Inline-six cylinder engine, a hallmark of BMW's engineering. Build Quality: High-quality materials and robust construction characteristic of BMW vehicles. 📋 Manual Details Coverage Areas Model Years Covered: 1999, 2000, 2001, 2002, 2003, 2004, 2005 Page Count Page Count: 1258 Manual Type Manual Type: Workshop Service Manual / Repair Manual Language Language: English Format Format: PDF 📖 Manual Coverage Systems Covered Engine Mechanical: Full disassembly, inspection, repair, and reassembly procedures for the M54B25 inline-six engine. Engine Management: Diagnosis and repair of DME (Digital Motor Electronics), fuel injection, ignition system, emissions control systems (SAE J1850 PWM, ISO 9141-2). Transmission Manual: Repair and overhaul of manual gearboxes (e.g., Getrag S5D 250G). Transmission Automatic: Repair and overhaul of automatic transmissions (e.g., GM 5L40-E). Drivetrain: Front suspension, rear axle, driveshafts, CV joints, differentials, wheel bearings. Braking System: Front and rear disc brakes, ABS (Anti-lock Braking System) diagnosis and repair, brake fluid specifications. Steering System: Power steering system diagnosis, repair, and fluid specifications; steering rack and linkage. Suspension System: Front and rear suspension components, shock absorbers, springs, control arms, bushings, alignment specifications. Electrical System: Wiring diagrams, starter motor, alternator, battery, fuses, relays, lighting systems, body control module (BCM). Climate Control: HVAC system diagnosis, refrigerant, compressor, blower motor, control panel repair. Body And Chassis: Body panel repair, doors, windows, locks, exterior trim, chassis component tightening torque specifications. Interior Systems: Seats, airbags, dashboard, instrument cluster, interior trim removal and installation. Procedures Included Routine Maintenance: Oil changes, filter replacements, spark plug replacement, coolant flushes, brake pad/rotor service. Troubleshooting: Diagnostic flowcharts, symptom-based troubleshooting for common issues. Repair Procedures: Step-by-step guides for component removal, installation, and adjustment for all major systems. Overhaul Procedures: Detailed instructions for complete engine and transmission rebuilds. Electrical Diagnostics: Component testing, circuit continuity checks, ECU troubleshooting. Bodywork Repair: Panel alignment, dent removal, rust repair, glass replacement. Technical Depth Depth: Comprehensive, covering basic maintenance to complete engine and transmission overhauls, including advanced diagnostics. 📊 Manual Specifications File Format File Type: PDF Searchability: Searchable text content for quick information retrieval. Print Quality Print Readability: High-resolution scans suitable for printing individual pages or the entire manual. Binding Type Binding: N/A (Digital PDF) Paper Type Paper: N/A (Digital PDF) ⚙️ Engine Specifications Primary Engine Engine Code: M54B25 Engine Type: Naturally Aspirated Inline-6 Displacement: 2.5 Liters (2494 cc) Performance Horsepower: 189 hp @ 6000 rpm Torque: 245 Nm (181 lb-ft) @ 3500 rpm Fuel System Fuel Delivery: Sequential Multi-Point Fuel Injection (MPI) Fuel Type: Premium Unleaded Gasoline (91 octane or higher recommended) Engine Features Valve Train: Double Overhead Camshafts (DOHC), 24 Valves, VANOS (Variable Valve Timing) 🔧 Transmission Standard Transmission Type Std: 5-Speed Manual (e.g., Getrag S5D 250G) Optional Transmission Type Opt: 5-Speed Automatic (e.g., GM 5L40-E) Features Transmission Fluid Manual: BMW MTF LT-2 or equivalent Transmission Fluid Automatic: Dexron III or equivalent (check specific model) 📐 Dimensions Exterior Length: 4471 mm (176.0 in) for Sedan Width: 1739 mm (68.5 in) Height: 1415 mm (55.7 in) for Sedan Wheelbase: 2760 mm (108.7 in) Weights Curb Weight: Approx. 1500 kg (3307 lbs) Wheel Bolt Pattern: 5x120 mm 🛡️ Safety Features Ratings NHTSA Front Impact: 5-Star (for applicable models/years) IIHS Side Impact: Good (for applicable models/years) Active Features ABS: Standard Anti-lock Braking System Asc: Optional Automatic Stability Control (ASC) Dsc: Optional Dynamic Stability Control (DSC) Passive Features Airbags: Frontal airbags, optional side airbags Seatbelts: Three-point inertia-reel seatbelts with front pre-tensioners 💡 Technology Features Infotainment Radio Options: Standard BMW Business CD radio, optional BMW Professional CD/DSP (Digital Signal Processor) system. Navigation: Optional factory navigation system (MKIII or MKIV based). Driver Assistance Parking Sensors: Optional Park Distance Control (PDC). Connectivity Phone Integration: Optional Bluetooth preparation or BMW Assist telematics. 🔧 Maintenance Service Intervals Oil Change Interval: Typically every 7,500-15,000 miles or as indicated by the Condition Based Service (CBS) system. Major Service: Around 60,000 miles, including spark plugs, coolant, and comprehensive inspection. Fluid Specifications Engine Oil Type: BMW Longlife-01 (LL-01) synthetic oil, 5W-30 or 0W-30 recommended. Coolant Type: BMW Blue Antifreeze/Coolant (G48 ethylene glycol based) or equivalent. Brake Fluid Type: DOT 4 (BMW Premium Brake Fluid recommended) Known Issues Cooling System: Plastic expansion tank failures, coolant hose leaks, water pump issues. Oil Leaks: VPC (Valve Cover Gasket) leaks, oil pan gasket leaks, O-ring seals on VANOS and oil filter housing. Suspension: Front control arm bushings ('bushings'), sway bar links, rear subframe bushings. Electrical: ABS/ASC sensor failures, VANOS solenoid issues, CCV (Crankcase Ventilation) system failure leading to oil consumption. Interior: Pixelation on instrument cluster displays, sagging headliner. 📚 Vehicle History Brand Heritage...