🏷️ Basic Information Identification Make: BMW Model: 325xi Generation Chassis Code: E90 (Sedan), E91 (Wagon/Touring) Generation Code: E90/E91/E92/E93 (3 Series 5th Generation) Codes Engine Code: N52B30 👋 Introduction Market Position Segment: Compact Executive Sedan/Wagon Brand Philosophy: Ultimate Driving Machine, focus on performance, handling, and build quality. Competitive Analysis Key Competitors: Audi A4 Quattro, Mercedes-Benz C-Class 4MATIC, Lexus IS250 AWD, Acura TL SH-AWD Key Features Drivetrain: xDrive All-Wheel Drive system provides enhanced traction and stability in various conditions. Engine: Smooth and powerful naturally aspirated inline-six engine (N52). Handling: Renowned BMW handling dynamics, balanced chassis, and precise steering. 📋 Manual Details Coverage Areas Supported Years: 2006, 2007, 2008, 2009, 2010 Body Styles Covered: Sedan (E90), Wagon/Touring (E91) Page Count Estimated Pages: Hundreds (specific count varies by edition, but implies comprehensive coverage) Manual Type Type: Factory Service Repair Manual (FSM) Language Language: English Format Format: Downloadable PDF 📖 Manual Coverage Systems Covered Powertrain: Engine (N52B30), cooling system, fuel system, exhaust system, ignition system, lubrication system, engine management (DME) Drivetrain: xDrive All-Wheel Drive (AWD) system, transfer case, front and rear differentials, drive shafts, CV joints Transmission: Manual (6-speed Getrag) and Automatic (6-speed ZF) transmissions, clutch, torque converter, transmission control unit (TCU) Suspension And Steering: Front and rear suspension components (struts, shocks, control arms, bushings), power steering system, steering rack Brakes: Front and rear disc brakes, ABS, DSC (Dynamic Stability Control), brake hydraulics, parking brake Electrical Systems: 12V battery system, alternator, starter, lighting (headlights, taillights, interior), fuses, relays, wiring diagrams Body And Interior: Body panels, doors, windows, seats, airbags, climate control system (HVAC), interior trim, safety restraints Diagnostics And Troubleshooting: OBD-II diagnostics, fault codes (DTCs), diagnostic procedures, symptom-based troubleshooting Procedures Included Maintenance: Oil changes, filter replacements, fluid checks and changes, spark plug replacement, belt inspection/replacement, brake fluid flush Repair: Engine component replacement (e.g., water pump, thermostat, VANOS solenoids), transmission overhaul, suspension component replacement, brake caliper/rotor replacement, electrical component diagnosis/replacement Disassembly And Assembly: Detailed step-by-step procedures for removing and installing major components and systems Specifications And Tolerances: Torque specifications, clearance measurements, wear limits, electrical resistance values Technical Depth Depth: Comprehensive: Covers routine maintenance to major component overhauls and diagnostics. Diagnostic Capabilities: Advanced diagnostic procedures, including use of BMW-specific diagnostic tools and software information (e.g., ISTA/D concepts). 📊 Manual Specifications File Format File Type: PDF (Portable Document Format) Print Quality Printability: Printable (allows users to print specific sections or the entire manual) Image Resolution: High-resolution images and diagrams for clarity Binding Type Binding: N/A (Digital Download) Paper Type Paper: N/A (Digital Download) Searchability Text Search: Searchable text for quick information retrieval ⚙️ Engine Specifications Primary Engine Engine Name: N52B30 Engine Type: Naturally Aspirated Inline 6-Cylinder Displacement: 2996 cc (3.0 Liters) Bore X Stroke: 85.0 mm x 88.0 mm Compression Ratio: 10.7:1 Valve Train: DOHC, 24 Valves, VALVETRONIC, Double VANOS Performance Horsepower: 255 hp @ 6600 rpm Torque: 220 lb-ft @ 2750 rpm Fuel System Fuel Delivery: Electronic Fuel Injection (EFI), Port Injection Fuel Type: Premium Unleaded Gasoline (91 AKI or higher recommended) 🔧 Transmission Standard Type: 6-speed Manual (Getrag GS6-37BZ) Optional Type: 6-speed Automatic (ZF GA6HP19Z) Features AWD Integration: Integrated with xDrive AWD system, electronically controlled power distribution Fluid Specifications Automatic Transmission Fluid: BMW Part # 83 22 0 026 977 (ETL 7045E or equivalent approved by BMW, e.g., Pentosin ATF1) Manual Transmission Fluid: BMW Part # 83 22 2 339 211 (or equivalent approved synthetic gear oil) 📐 Dimensions Exterior Wheelbase: 108.7 inches (2760 mm) Length: 181.8 inches (4618 mm) (Sedan) Width: 69.4 inches (1763 mm) Height: 56.7 inches (1440 mm) (Sedan) Weights Curb Weight: Approx. 3600 - 3750 lbs (1633 - 1701 kg), varies by transmission and options Cargo Trunk Volume: 12.0 cu ft (340 Liters) (Sedan) 🛡️ Safety Features Ratings NHTSA Frontal Crash Test: 5-Star (Driver), 5-Star (Front Passenger) IIHS Frontal Offset Test: Good Active Features Traction Control: Dynamic Traction Control (DTC), Dynamic Stability Control (DSC) Braking Assist: Anti-lock Braking System (ABS), Brake Assist Passive Features Airbags: Front airbags, side-impact airbags, front and rear head protection system (curtain airbags) Seat Belts: 3-point inertia-reel seat belts with pretensioners and force limiters 💡 Technology Features Infotainment I Drive System: Available iDrive infotainment system with professional navigation and digital display. Audio Options: Premium sound systems from Harman Kardon were optional. Driver Assistance Parking Assistance: Optional rear parking sensors (PDC - Park Distance Control). Connectivity Bluetooth: Optional Bluetooth connectivity for hands-free calling. Comfort Features Climate Control: Automatic climate control with dual-zone temperature settings. 🔧 Maintenance Service Intervals Oil Change Interval: Variable based on oil condition sensor (Condition Based Service - CBS), typically 10,000-15,000 miles or 12-24 months. Brake Fluid Flush: Every 2 years, regardless of mileage (BMW recommendation). Spark Plug Replacement: Around 60,000 miles for the N52 engine. Engine Air Filter: Check at every oil change, replace as needed (typically 15,000-30,000 miles). Cabin Air Filter: Every 15,000-30,000 miles...