🏷️ Basic Information Identification Make: BMW Model: 325xi Model Generation: E90/E91 Model Years Covered: 2006, 2007, 2008, 2009, 2010 Codes Chassis Code: E90 (Sedan), E91 (Wagon/Touring) Engine Code Family: N52 👋 Introduction Market Position Vehicle Segment: Compact Executive Sedan/Wagon. Brand Philosophy: BMW's 'Ultimate Driving Machine' ethos, focusing on performance, handling, and driver engagement. Competitive Analysis Key Competitors: Audi A4 Quattro, Mercedes-Benz C-Class 4MATIC, Infiniti G35x, Lexus IS250 AWD. Key Features Performance Orientation: The 325xi offers a balance of performance, luxury, and all-weather capability. All Wheel Drive: xDrive system provides enhanced traction and stability. 📋 Manual Details Coverage Areas Coverage Scope: Comprehensive service, repair, and maintenance for the BMW 325xi (E90/E91) from 2006-2010. Specific Models Covered: 325xi Sedan (E90), 325xi Wagon/Touring (E91) Page Count Estimated Pages: Over 2000 pages (typical for comprehensive workshop manuals of this era). Manual Type Type: Factory-authorized Service and Repair Workshop Manual. Language Language: English Format Format: Digital (PDF) 📖 Manual Coverage Systems Covered Engine: Engine mechanical, lubrication, cooling, fuel, ignition, emissions, exhaust, engine management (DME). Transmission: Manual and Automatic transmission systems, including removal, installation, overhaul, and fluid specifications. Drivetrain: xDrive All-Wheel Drive system, transfer case, differentials (front and rear), drive shafts, axles, CV joints. Suspension: Front and rear suspension components, steering system, wheel alignment specifications. Brakes: Brake system hydraulics, anti-lock braking system (ABS), dynamic stability control (DSC), brake pad/rotor replacement, bleeding procedures. Electrical: Complete electrical system, including battery, charging system, starter, lighting, power accessories, fuses, relays, wiring diagrams. Body: Body panels, doors, windows, locks, interior trim, exterior trim, chassis and frame specifications. HVAC: Heating, Ventilation, and Air Conditioning (HVAC) system, refrigerant handling, component testing. Safety Systems: Airbag system, seatbelt pre-tensioners, SRS module diagnosis. Procedures Included Maintenance: Scheduled maintenance intervals, oil changes, filter replacements, spark plug replacement, brake fluid flush, coolant flush. Diagnostics: Troubleshooting guides for common symptoms, diagnostic trouble codes (DTCs), component testing procedures. Repair: Detailed step-by-step repair procedures for all major components and systems, including torque specifications and special tool requirements. Overhaul: Engine and transmission overhaul procedures. Installation: Component replacement and installation, including body panels, interior components, and accessories. Wiring: Detailed electrical wiring diagrams for all vehicle systems. Technical Depth Depth: Expert level. Covers everything from basic fluid checks and filter changes to complete engine and transmission rebuilds, complex electrical diagnostics, and driveline component overhauls. Diagnostic Tools Mention: References BMW's proprietary diagnostic tools (e.g., ISTA/D, DIS) and procedures for advanced diagnosis. 📊 Manual Specifications File Format File Type: PDF Searchability: Searchable text for quick information retrieval. Print Quality Quality: High-resolution graphics, diagrams, and schematics for clarity. Binding Type Binding: N/A (Digital PDF) Paper Type Paper: N/A (Digital PDF) ⚙️ Engine Specifications Primary Engine Engine Code: N52B25 Engine Type: Naturally Aspirated Inline-6 (Straight-6) Displacement: 2.5 Liters (2497 cc) Bore X Stroke: 82.0 mm x 79.5 mm Compression Ratio: 10.7:1 Valve Train: DOHC, 24 Valves, Valvetronic, Double VANOS Performance Horsepower: 215 hp @ 6500 rpm Torque: 185 lb-ft @ 2750 rpm Fuel System Fuel Delivery: Electronic Fuel Injection (EFI) with Port Injection. Recommended Fuel: Premium Unleaded (91 Octane or higher). 🔧 Transmission Standard Transmission Type: 6-Speed Manual Transmission (Getrag GS6-37BZ). Optional Transmission Type: 6-Speed Steptronic Automatic Transmission (ZF 6HP19). Features X Drive Integration: Integral xDrive all-wheel-drive system with electronically controlled clutch pack. Manual Fluid Type: MTF LT-2 Automatic Fluid Type: Shell M-1375.4 (BMW Part Number 83 22 0 026 553) 📐 Dimensions Exterior Length Sedan: 180.6 inches (4587 mm) Length Wagon: 181.1 inches (4599 mm) Width: 69.9 inches (1777 mm) Height Sedan: 56.1 inches (1425 mm) Height Wagon: 57.1 inches (1450 mm) Wheelbase: 108.7 inches (2760 mm) Interior Seating Capacity: 5 Passengers Cargo Cargo Volume Sedan: 12.0 cu ft (340 L) Cargo Volume Wagon: 17.7 cu ft (500 L) / 58.3 cu ft (1650 L) with rear seats folded. Weights Curb Weight Manual Sedan: 3571 lbs (1620 kg) Curb Weight Automatic Wagon: 3825 lbs (1735 kg) Wheel Bolt Pattern: 5x120 Wheel Size Standard: 17 x 8.0 inches Tire Size Standard: 225/45R17 🛡️ Safety Features Ratings NHTSA Front Crash Test: 5-Star (Sedan) IIHS Top Safety Pick: Yes (for applicable years) Active Features Dynamic Stability Control: Standard DSC with DTC (Dynamic Traction Control). Anti Lock Brakes: Standard ABS. All Wheel Drive: Standard xDrive All-Wheel Drive system. Passive Features Airbags: Front airbags, front side-impact airbags, and head protection system (curtain airbags). Seatbelts: 3-point inertia-reel seatbelts with front belt pretensioners and force limiters. 💡 Technology Features Infotainment System Name: iDrive (First Generation). Features: Central control knob, optional navigation system, radio, CD player, optional Logic 7 audio system. Driver Assistance Standard Features: ABS, DSC, Traction Control. Optional Features: Park Distance Control (PDC), Xenon Adaptive Headlights. Connectivity Bluetooth: Optional Bluetooth connectivity for hands-free calling. Auxiliary Input: Standard auxiliary audio input jack. 🔧 Maintenance Service Intervals Oil Change Interval: Variable, indicated by Condition Based Service (CBS) system, typically around 10,000-15,000 miles or annually. Engine...