🏷️ Basic Information Identification Make: BMW Model: 325xi Year: 2006-2010 Generation Chassis Code: E90 (Sedan), E91 (Wagon/Touring), E92 (Coupe), E93 (Convertible) Codes Engine Code Primary: N52B25 👋 Introduction Market Position Market Segment: Compact Executive Sedan/Wagon Target Audience: Enthusiasts and independent repair shops seeking detailed technical information. Competitive Analysis Key Competitors: Audi A4 Quattro, Mercedes-Benz C-Class 4MATIC, Lexus IS250 AWD. Key Features Vehicle Focus: Sporty handling, refined interior, all-wheel-drive capability (xi models). Manual Value: Provides critical factory-level data to maintain and repair the vehicle effectively, reducing reliance on expensive dealership services. 📋 Manual Details Coverage Areas Coverage: Comprehensive mechanical, electrical, and bodywork repairs; routine maintenance; diagnostic procedures; troubleshooting. Page Count Page Count: Estimated 2000+ pages (typical for a full factory service manual set) Manual Type Manual Type: Factory-level Service and Repair Manual Language Language: English Format Format: PDF 📖 Manual Coverage Systems Covered Engine Mechanical: Engine assembly, cylinder head, pistons, crankshaft, camshafts, valve train, timing, cooling system, lubrication system. Engine Management: Fuel injection, ignition system, emissions control (DME - Digital Motor Electronics), sensors and actuators. Transmission Drivetrain: Manual and automatic transmission overhaul, xDrive all-wheel drive system, differentials, driveshafts, axles. Braking System: Hydraulic system, ABS (Anti-lock Braking System), DSC (Dynamic Stability Control), brake pad and rotor replacement, caliper service. Suspension Steering: Front and rear suspension components, shock absorbers, springs, control arms, steering rack, power steering system. Electrical System: Battery, charging system, starter motor, lighting, power windows, mirrors, central locking, fuse box diagrams. Body Chassis: Body panels, doors, hood, trunk, interior trim, structural components, corrosion protection. Climate Control: HVAC system, air conditioning, heater core, climate control unit operation and repair. Safety Systems: Airbag system (SRS), seat belt mechanisms, tire pressure monitoring system (TPMS). Procedures Included Routine Maintenance: Oil change, filter replacements, spark plug service, brake fluid flush, coolant flush, drive belt replacement. Diagnostic Troubleshooting: Fault code interpretation, symptom-based troubleshooting charts, electrical circuit testing. Engine Repair: Head gasket replacement, piston ring replacement, crankshaft seal replacement, timing chain service. Transmission Repair: Clutch replacement (manual), torque converter replacement (automatic), valve body service. Drivetrain Repair: CV joint replacement, differential fluid change, transfer case service (xDrive). Braking Component Replacement: Brake caliper rebuild/replacement, ABS sensor replacement, master cylinder replacement. Suspension Steering Repair: Wheel bearing replacement, strut/shock absorber replacement, tie rod end replacement. Electrical Component Replacement: Alternator replacement, starter motor replacement, fuel pump replacement, ECU (Engine Control Unit) programming. Bodywork Collision Repair: Panel alignment, door mechanism repair, bumper replacement, structural repair guidelines. Climate Control Repair: AC compressor replacement, evaporator core replacement, heater control valve replacement. Technical Depth Depth: Full factory-level detail, including torque specifications, tolerances, diagnostic flowcharts, and wiring diagrams. 📊 Manual Specifications File Format File Type: PDF Searchability: Text-searchable for quick access to specific topics. Print Quality: High-resolution graphics and clear text for easy printing. Binding Type Binding Type: N/A (Digital PDF) Paper Type Paper Type: N/A (Digital PDF) ⚙️ Engine Specifications Primary Engine Engine Type: Naturally Aspirated Inline 6-Cylinder Displacement: 2.5 Liters (2497 cc) Bore X Stroke: 82.0 mm x 78.5 mm Compression Ratio: 10.7:1 Valve Train: Double Overhead Camshafts (DOHC), 24 Valves, VANOS (Variable Valve Timing) Performance Horsepower: 215 hp @ 6500 RPM Torque: 185 lb-ft @ 2750 RPM Fuel System Fuel Delivery: Sequential Electronic Fuel Injection (SEFI) Fuel Type: Premium Unleaded (91 Octane Recommended) Engine Management System: Bosch Motronic (specific variant may vary) 🔧 Transmission Standard Transmission Type: 6-Speed Manual (SMG optional on some models/years) Optional Transmission Type: 6-Speed Steptronic Automatic Features Drivetrain: xDrive All-Wheel Drive (Permanent) Transfer Case: Electronically controlled multi-plate clutch system for torque distribution. 📐 Dimensions Exterior Length: Sedan: 180.6 inches (4587 mm), Wagon: 183.0 inches (4648 mm), Coupe: 181.8 inches (4618 mm) Width: Sedan/Wagon: 70.1 inches (1780 mm), Coupe: 70.5 inches (1791 mm) Height: Sedan: 56.2 inches (1427 mm), Wagon: 57.3 inches (1455 mm), Coupe: 55.1 inches (1400 mm) Wheelbase: Sedan/Wagon: 108.7 inches (2760 mm), Coupe: 107.4 inches (2727 mm) Cargo Cargo Volume Sedan: 12.0 cu ft (340 Liters) Cargo Volume Wagon: 22.9 cu ft (649 Liters) / 58.3 cu ft (1650 Liters) with rear seats folded Weights Curb Weight Sedan: Approx. 3571 lbs (1620 kg) Curb Weight Wagon: Approx. 3770 lbs (1710 kg) Wheel Bolt Pattern: 5x120 Tire Size Standard: 225/45R17 🛡️ Safety Features Ratings NHTSA Frontal Driver: 5-Star NHTSA Frontal Passenger: 5-Star IIHS Side Impact: Good (for models with side airbags) Active Features Stability Control: Dynamic Stability Control (DSC) Traction Control: Automatic Stability Control and Traction (ASC+T) Antilock Brakes: Anti-lock Braking System (ABS) Passive Features Airbags: Frontal, Side-Curtain (optional/standard depending on body style and trim), Knee Airbags (driver). Seat Belts: Pretensioning front seat belts, LATCH child seat anchors. 💡 Technology Features Infotainment I Drive System: Available iDrive infotainment system for navigation, audio, and climate control (CCC or CIC depending on year/options). Audio Options: Standard BMW Professional Radio, optional Harman Kardon surround sound system. Driver Assistance Parking Sensors: Park Distance Control...