🏷️ Basic Information Identification Make: BMW Model: 325xi Year: 2005 Codes Chassis Code: E90 (for 325xi sedan), E91 (for 325xi touring) Engine Code: N52B30 👋 Introduction Market Position Segment: Compact Executive Sedan/Wagon Positioning Statement: The BMW 3 Series (E90/E91 generation) represented BMW's core offering in the premium compact executive segment, emphasizing driving dynamics, luxury, and technological advancement. Competitive Analysis Key Competitors: Audi A4 Quattro, Mercedes-Benz C-Class 4MATIC, Lexus IS250 AWD, Acura TL SH-AWD. Key Features Performance Focus: Renowned for balanced chassis, responsive steering, and a refined inline-6 engine. Drivetrain: xDrive all-wheel-drive system provided enhanced traction and stability, particularly in adverse weather conditions. Luxury Appointments: High-quality interior materials, advanced technology features for its time, and a comfortable yet engaging driving experience. 📋 Manual Details Coverage Areas Coverage: Complete service and repair for BMW 325xi (2005 model year). Page Count Page Count: Estimated 2000+ pages (typical for comprehensive workshop manuals) Manual Type Manual Type: Service Repair Workshop Manual Language Language: English Format Format: Digital (PDF) 📖 Manual Coverage Systems Covered Engine: All aspects of the N52B30 inline-6 engine: maintenance, diagnostics, repair, overhaul. Transmission: Manual (6-speed) and Automatic (6-speed Steptronic) transmissions: service, repair, diagnostics, fluid service. Drivetrain: xDrive All-Wheel Drive System: transfer case, differentials, drive shafts, hubs, diagnosis. Suspension: Front and Rear Suspension Systems: struts, shocks, control arms, bushings, subframes, wheel alignment. Steering: Power Steering System: pump, rack and pinion, fluid, troubleshooting. Brakes: Braking System: ABS, DSC, brake fluid service, pads, rotors, calipers, parking brake. Electrical: Complete Electrical System: wiring diagrams, battery, charging system, starter, ignition, lighting, sensors, ECUs. Comfort Systems: HVAC (Heating, Ventilation, Air Conditioning), power windows, locks, mirrors, seats, sunroof. Bodywork: Body Exterior and Interior: panels, doors, trim, bumpers, glass, safety systems (airbags). Diagnostics: On-Board Diagnostics (OBD-II) and BMW-specific diagnostic procedures, fault code interpretation. Procedures Included Maintenance Tasks: Oil changes, filter replacements, spark plug service, coolant flushes, brake fluid changes, belt inspections. Repair Procedures: Component removal and installation, engine teardown and reassembly, transmission repair, suspension component replacement. Troubleshooting Guides: Step-by-step diagnostic flowcharts for common and complex issues across all vehicle systems. Wiring Diagrams: Detailed, system-specific wiring schematics for accurate electrical diagnosis. Special Tools: Identification and usage of specialized tools required for specific BMW repairs. Torque Specifications: Precise torque values for all critical fasteners and components. Technical Depth Depth: Comprehensive, covering routine maintenance to complete engine and transmission rebuilds. Suitable for professional mechanics and advanced DIYers. 📊 Manual Specifications File Format File Format: PDF Searchability: Searchable text for quick information retrieval. Printability: Printable for easy workshop use. Print Quality Image Resolution: High-resolution images and diagrams for clarity. Binding Type Binding: N/A (Digital PDF format) Paper Type Paper Type: N/A (Digital PDF format) ⚙️ Engine Specifications Primary Engine Engine Name: BMW N52B30 Engine Type: 3.0L Naturally Aspirated Inline 6-Cylinder Valve Train: Double Overhead Camshafts (DOHC), 24 Valves, Valvetronic, VANOS Performance Horsepower: 255 hp @ 6600 rpm Torque: 215 lb-ft @ 2750 rpm Bore X Stroke: 85.0 mm x 88.0 mm Compression Ratio: 10.7:1 Fuel System Fuel Delivery: Fuel Injection (Multi-point, Sequential) Fuel Type: Premium Unleaded Gasoline (91 octane or higher recommended) Engine Management ECU: MSV70 / MSV80 Engine Management System 🔧 Transmission Standard Transmission Type: 6-Speed Manual (Getrag GS6-37BZ) Optional Transmission Type: 6-Speed Automatic with Steptronic (GA6HP-19Z) Features Drivetrain Configuration: xDrive All-Wheel Drive Automatic Modes: Sport, Manual selection via Steptronic shifter and/or paddles (if equipped) Fluid Specifications Automatic Transmission Fluid: BMW ATF 6 (Dexron VI equivalent) - 8-Speed Transmission Fluid for GA6HP19Z Manual Transmission Fluid: BMW MTF LT-2 (Manual Transmission Fluid) 📐 Dimensions Exterior Length: Sedan (E90): 181.4 in (4609 mm); Wagon (E91): 180.7 in (4590 mm) Width: Sedan/Wagon: 70.1 in (1781 mm) Height: Sedan (E90): 56.7 in (1440 mm); Wagon (E91): 56.2 in (1428 mm) Wheelbase: Sedan (E90): 108.7 in (2760 mm); Wagon (E91): 107.7 in (2735 mm) Interior Passenger Volume: Approx. 98 cu ft Cargo Cargo Volume Sedan: 12.0 cu ft Cargo Volume Wagon: 17.7 cu ft (rear seats up) / 57.3 cu ft (rear seats down) Weights Curb Weight: Approx. 3500-3650 lbs (depending on body style and transmission) Gross Vehicle Weight Rating: Approx. 4700 lbs Wheels And Tires Standard Wheel Size: 17 inches Standard Tire Size: 225/45R17 Wheel Bolt Pattern: 5x120 mm Center Bore: 72.5 mm 🛡️ Safety Features Ratings NHTSA Front Impact: 5 Stars NHTSA Side Impact: 5 Stars IIHS Front Crash: Good IIHS Side Impact: Good Active Features Traction Control: Dynamic Traction Control (DTC), Automatic Stability Control (ASC) Stability Control: Dynamic Stability Control (DSC) Braking Assist: Anti-lock Braking System (ABS), Electronic Brake Force Distribution (EBD) Passive Features Airbags: Frontal airbags, front side-impact airbags, front and rear head protection system (curtain airbags). Seatbelts: Pretensioning front seat belts, active head restraints. 💡 Technology Features Infotainment Head Unit: BMW Professional Radio or available iDrive system (CCC generation) Navigation: Optional Professional Navigation System (CCC) Audio System: Standard 6-speaker system, optional premium Hi-Fi...
The BMW 3 Series (E90/E91 generation) represented BMW's core offering in the premium compact executive segment, emphasizing driving dynamics, luxury, and technological advancement.
Premium Unleaded Gasoline (91 octane or higher recommended)
Engine Management
ECU:
MSV70 / MSV80 Engine Management System
🔧 Transmission
Standard
Transmission Type:
6-Speed Manual (Getrag GS6-37BZ)
Optional
Transmission Type:
6-Speed Automatic with Steptronic (GA6HP-19Z)
Features
Drivetrain Configuration:
xDrive All-Wheel Drive
Automatic Modes:
Sport, Manual selection via Steptronic shifter and/or paddles (if equipped)
Fluid Specifications
Automatic Transmission Fluid:
BMW ATF 6 (Dexron VI equivalent) - 8-Speed Transmission Fluid for GA6HP19Z
Manual Transmission Fluid:
BMW MTF LT-2 (Manual Transmission Fluid)
📐 Dimensions
Exterior
Length:
Sedan (E90): 181.4 in (4609 mm); Wagon (E91): 180.7 in (4590 mm)
Width:
Sedan/Wagon: 70.1 in (1781 mm)
Height:
Sedan (E90): 56.7 in (1440 mm); Wagon (E91): 56.2 in (1428 mm)
Wheelbase:
Sedan (E90): 108.7 in (2760 mm); Wagon (E91): 107.7 in (2735 mm)
Interior
Passenger Volume:
Approx. 98 cu ft
Cargo
Cargo Volume Sedan:
12.0 cu ft
Cargo Volume Wagon:
17.7 cu ft (rear seats up) / 57.3 cu ft (rear seats down)
Weights
Curb Weight:
Approx. 3500-3650 lbs (depending on body style and transmission)
Gross Vehicle Weight Rating:
Approx. 4700 lbs
Wheels And Tires
Standard Wheel Size:
17 inches
Standard Tire Size:
225/45R17
Wheel Bolt Pattern:
5x120 mm
Center Bore:
72.5 mm
🛡️ Safety Features
Ratings
NHTSA Front Impact:
5 Stars
NHTSA Side Impact:
5 Stars
IIHS Front Crash:
Good
IIHS Side Impact:
Good
Active Features
Traction Control:
Dynamic Traction Control (DTC), Automatic Stability Control (ASC)
Stability Control:
Dynamic Stability Control (DSC)
Braking Assist:
Anti-lock Braking System (ABS), Electronic Brake Force Distribution (EBD)
Passive Features
Airbags:
Frontal airbags, front side-impact airbags, front and rear head protection system (curtain airbags).
Seatbelts:
Pretensioning front seat belts, active head restraints.
💡 Technology Features
Infotainment
Head Unit:
BMW Professional Radio or available iDrive system (CCC generation)
Navigation:
Optional Professional Navigation System (CCC)
Audio System:
Standard 6-speaker system, optional premium Hi-Fi or Harman Kardon systems.
Driver Assistance
Parking Sensors:
Optional Park Distance Control (PDC) front and rear.
Cruise Control:
Standard cruise control, optional Active Cruise Control (ACC) on some models.
Connectivity
Bluetooth:
Optional Bluetooth preparation and hands-free system.
Comfort Features
Climate Control:
Standard manual climate control, optional automatic dual-zone climate control.
🔧 Maintenance
Service Intervals
Oil Change Interval:
Condition-Based Service (CBS) typically recommends every 10,000-15,000 miles or annually, whichever comes first, based on driving conditions.
Engine Oil Type:
BMW Longlife-01 (LL-01) or BMW Longlife-01 FE (LL-01 FE) synthetic oil, typically 5W-30 or 0W-30.
Engine Oil Capacity:
6.5 US quarts (6.2 liters) with filter change for N52B30
Cabin Air Filter:
Replace every 15,000-30,000 miles or annually.
Engine Air Filter:
Inspect every 15,000 miles, replace as needed or every 30,000 miles.
Spark Plugs:
Replace at 60,000-100,000 miles (refer to specific service bulletins, typically Bosch FGR7KQE0U or equivalent).
Brake Fluid:
Flush and replace every 2 years, regardless of mileage.
Coolant:
BMW Blue Coolant (G48), replace at 4 years or 100,000 miles, then every 2 years or 50,000 miles thereafter.
Fluid Specifications
Power Steering Fluid:
BMW Power Steering Fluid (P/N 83 29 0 429 576) or Pentosin CHF 11S
Differential Fluid:
API GL-5, SAE 75W-90 (front and rear)
Known Issues
Oil Leaks:
Common leaks from valve cover gasket, oil pan gasket, and oil filter housing gasket due to aging rubber seals.
Cooling System:
Plastic coolant expansion tanks can become brittle and crack; water pumps (especially electric ones in later N52 variants, though 2005 is likely mechanical) and thermostats can fail.
Valvetronic System:
Eccentric shaft sensor (CAS sensor) failure can lead to rough idling and poor performance. Valvetronic servo motor can also fail.
Pcv System:
Crankcase Ventilation (CCV) system diaphragm can tear, causing oil consumption and potential vacuum leaks.
Ignition Coils And Plugs:
Coil packs can fail, leading to misfires. Spark plugs should be replaced at recommended intervals.
Xdrive System:
Transfer case actuator can fail; fluid in the transfer case and differentials should be changed proactively.
📚 Vehicle History
Brand Heritage
Brand Philosophy:
BMW, founded in 1916, is known for its 'Ultimate Driving Machine' slogan, emphasizing performance, engineering, and luxury.
Model Evolution
E46 Predecessor:
The 325xi (E90/E91) replaced the E46 generation 325xi (2001-2005), introducing a significantly redesigned platform and the new N52 engine.
E90 Generation:
The E90 generation (sedan) debuted in 2005, followed by the E91 touring (wagon) in late 2005 for the 2006 model year. The 325xi model was part of this initial launch phase.
Production
Manufacturing Locations:
Primarily manufactured in Germany (Dingolfing, Munich).
Production Years For E90 325Xi
Production Span:
2005-2006 (as 325xi, replaced by 328xi with the introduction of LCI updates and a new engine nomenclature)
🏆 Awards & Recognition
Recognitions
Car And Driver 10Best:
The BMW 3 Series consistently received Car and Driver's 10Best awards for its generation, including the 325xi variant.
Ward Best Engines:
The N52 engine family, including the 3.0L variant, was recognized by Ward's AutoWorld as one of the best engines.
Ratings
Vehicle Dynamics Reputation:
Consistently praised by automotive media for its superior handling, steering feel, and overall driving dynamics.
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