🏷️ Basic Information Identification Make: BMW Model: 3 Series Model Variant: 325xi Generation Chassis Code: E46 Generation Years: 1998-2006 (North American models 1999-2006) Codes Engine Code: M54B25 👋 Introduction Market Position Positioning: The E46 3 Series, particularly the 325xi, represented BMW's entry into a more performance-oriented, yet practical, compact luxury sedan and wagon segment. It competed with models like the Mercedes-Benz C-Class, Audi A4, and Lexus IS. Competitive Analysis Strengths: Renowned for its balanced handling, rear-wheel-drive bias (even in xDrive form), refined inline-six engines, and premium interior. The 325xi offered all-weather capability without significantly compromising the driving dynamics. Key Features Powertrain: The M54B25 engine was a highlight, known for its smooth power delivery and linearity. The xDrive system provided enhanced traction and stability. Design: Chris Bangle's controversial but influential design language marked the E46 generation, emphasizing flowing lines and a more aggressive stance. Manual Purpose Intended Audience: Primarily mechanical technicians, but also invaluable for advanced DIY enthusiasts and shop owners. 📋 Manual Details Coverage Areas Covered Years: 1999, 2000, 2001, 2002, 2003, 2004, 2005 Covered Models: BMW 325xi (all-wheel drive variants) Page Count Estimated Page Count: Over 1500 pages (typical for comprehensive workshop manuals) Manual Type Type: Workshop Service Repair Manual Language Language: English Format Format: PDF 📖 Manual Coverage Systems Covered Engine: M54B25 inline-six, diagnostics, repair, overhaul, timing, lubrication, cooling, fuel injection, emissions. Transmission: GM A5S360R (5-speed automatic), Getrag 420G (6-speed manual), diagnostics, fluid changes, internal components, torque converter, clutch assembly. Drivetrain: xDrive all-wheel drive system, transfer case, front and rear differentials, driveshafts, CV joints, hub assemblies. Suspension: Front McPherson strut, rear multi-link suspension, springs, shock absorbers, control arms, bushings, sway bars, steering linkage. Brakes: Front and rear disc brakes (vented front), ABS, DSC (Dynamic Stability Control), brake fluid flush, caliper repair, rotor replacement, brake pad replacement. Electrical System: 12V battery, charging system (alternator), starting system (starter), lighting, fuses, relays, ignition system, sensors (crankshaft, camshaft, O2), ECU (DME) diagnostics. Body And Chassis: Body panel removal/installation, door mechanisms, interior trim, bumpers, glass, structural components, corrosion protection. HVAC: Heating, ventilation, air conditioning system, refrigerant handling, blower motor, climate control unit, cabin filter replacement. Fuel System: Fuel tank, fuel pump, fuel filter, fuel lines, fuel injectors, fuel pressure regulator, EVAP system. Exhaust System: Exhaust manifolds, catalytic converters, mufflers, oxygen sensors, exhaust hangers. Procedures Included Maintenance: Oil change, filter replacement, spark plug replacement, coolant flush, brake fluid change, cabin air filter replacement, drive belt inspection/replacement. Troubleshooting: Diagnostic trouble codes (DTCs), common drivability issues, electrical system faults, component failure analysis. Repair: Engine component replacement (e.g., water pump, thermostat, alternator), transmission service, suspension component replacement, brake system repair, electrical component diagnosis and replacement. Overhaul: Detailed engine and transmission overhaul procedures, including disassembly, inspection, and reassembly. Installation: Component installation and alignment procedures, torque specifications for critical fasteners. Specifications And Data: Torque values, fluid capacities, electrical schematics, diagnostic data, component tolerances. Technical Depth Depth: Comprehensive, from basic maintenance to complete engine and transmission rebuilds and advanced diagnostics. Diagnostic Tools: Information on using BMW-specific diagnostic tools (e.g., DIS, ISTA) or equivalent OBD-II scanners. Wiring Diagrams: Detailed electrical schematics for all vehicle systems. 📊 Manual Specifications File Format Format: PDF Searchability: Typically text-searchable PDF for efficient information retrieval. Print Quality Quality: High-resolution for clear diagrams, schematics, and text. Binding Type Binding: N/A (Digital PDF format) Paper Type Paper Type: N/A (Digital PDF format) ⚙️ Engine Specifications Primary Engine Engine Type: Inline 6-cylinder, naturally aspirated Engine Code: M54B25 Displacement: 2.5 Liters (2494 cc) Performance Horsepower: 184 hp @ 6000 rpm Torque: 232 Nm (171 lb-ft) @ 3500 rpm Fuel System Fuel Delivery: Multi-point fuel injection (Bosch Motronic ME 7.2) Fuel Type: Premium Unleaded Gasoline (91 octane or higher recommended) Engine Management ECU: Bosch Motronic ME 7.2 🔧 Transmission Standard Transmission Type: GM A5S360R 5-speed automatic (xDrive models) Optional Transmission Type: Getrag 420G 6-speed manual (less common on xi models, but was available in some markets or as a conversion) Features AWD System: xDrive intelligent all-wheel drive system with variable torque distribution. Fluid Specifications Automatic Transmission Fluid: BMW ATF LT-3 (P/N 83 22 0 024 359) or equivalent Dexron III/VI (check specific service bulletin). Manual Transmission Fluid: BMW MTF LT-2 (P/N 83 22 0 394 244) or equivalent synthetic GL-4 rated gear oil. 📐 Dimensions Exterior Length: 4471 mm (176.0 in) Width: 1739 mm (68.5 in) Height: 1414 mm (55.7 in) Wheelbase: 2760 mm (108.7 in) Weights Curb Weight Automatic: Approx. 1550 kg (3417 lbs) Curb Weight Manual: Approx. 1510 kg (3330 lbs) 🛡️ Safety Features Ratings NHTSA Front Impact: 4-star (driver), 4-star (passenger) IIHS Side Impact: Good (for models equipped with side airbags) Active Features Stability Control: Standard DSC (Dynamic Stability Control) Traction Control: Standard ASC+T (Automatic Stability Control + Traction) ABS: Standard Anti-lock Braking System Passive Features Airbags: Front airbags, optional front side-impact airbags, optional curtain airbags (later models)....