🏷️ Basic Information Identification Make: BMW Model: 325i Year: 2003 Codes Chassis Code: E46 Engine Code Series: M54 👋 Introduction Market Position Target Audience: BMW owners seeking to perform DIY maintenance and repairs, independent repair shops, enthusiasts. Competitive Analysis Advantage: Official licensing ensures the highest level of accuracy and completeness compared to aftermarket manuals. Key Features Accessibility: Instant download provides immediate access to critical repair information. Searchability: Software format typically offers powerful search capabilities for quick information retrieval. 📋 Manual Details Coverage Areas Primary Coverage: North America Secondary Coverage: Global BMW Service Standards (applicable) Page Count Estimated Pages: 1500+ Manual Type Type: Official Service & Repair Manual Software Language Language: English Format Format: Software (likely PDF or proprietary executable) 📖 Manual Coverage Systems Covered Powertrain: Engine Mechanical, Engine Management, Fuel System, Ignition System, Exhaust System, Cooling System, Lubrication System Drivetrain: Manual Transmission, Automatic Transmission, Driveline Components (Driveshafts, Differentials) Chassis: Suspension (Front & Rear), Steering System, Brake System (ABS, DSC), Wheels & Tires Electrical: Body Electrical, Engine Electrical, Lighting, Instrument Cluster, HVAC Controls, Infotainment Systems, DME (Digital Motor Electronics) and EWS (Electronic Immobilizer) Systems Body: Body Panels, Doors, Windows, Seats, Interior Trim, Exterior Trim, Convertible Top (if applicable) Procedures Included Maintenance: Scheduled Maintenance, Oil Changes, Filter Replacements, Fluid Checks & Top-offs, Belt & Hose Inspections Diagnostics: Troubleshooting Flowcharts, Fault Code Interpretation (OBD-II), Component Testing Procedures Repair: Component Removal & Installation, Reassembly Procedures, Torque Specifications, Adjustment Procedures Special Tools: Identification of BMW-specific tools required for various procedures Technical Depth Depth: Comprehensive: Covers routine maintenance to major overhauls and diagnostic troubleshooting. Accuracy: Official BMW data ensures factory accuracy. 📊 Manual Specifications File Format Software Type: Digital software, potentially interactive with search functionality. Print Quality Print Capability: Likely printable pages for specific sections. Binding Type Binding: N/A (Software) Paper Type Paper Type: N/A (Software) ⚙️ Engine Specifications Primary Engine Engine Type: Inline 6-cylinder, Naturally Aspirated Displacement: 2.5 Liters (2494 cc) Bore X Stroke: 81.0 mm x 80.9 mm Compression Ratio: 10.2:1 Valve Train: Double Overhead Camshafts (DOHC), 4 valves per cylinder, VANOS (Variable Valve Timing) Performance Horsepower Output: 184 hp @ 6000 rpm Torque Output: 175 lb-ft @ 3500 rpm Fuel System Fuel Delivery: Sequential Multi-Port Fuel Injection (SMI) Fuel Type: Premium Unleaded Gasoline (91 octane or higher recommended) Ignition System: Distributorless Electronic Ignition (DIS) with coil-on-plug design 🔧 Transmission Standard Transmission Type: 5-speed Manual Transmission Optional Transmission Type: 5-speed STEPTRONIC Automatic Transmission Features Automatic Features: Driver-selectable modes (Sport/Comfort), Manual shift mode (STEPTRONIC) Fluid Specification Manual Transmission Fluid: BMW MTF-LT-1 or equivalent (refer to manual for exact specs) Automatic Transmission Fluid: BMW ATF LT-3 or equivalent (refer to manual for exact specs) 📐 Dimensions Exterior Length: approx. 177.5 inches (4509 mm) Width: approx. 68.5 inches (1740 mm) Height: approx. 55.7 inches (1415 mm) Wheelbase: approx. 107.4 inches (2728 mm) Weights Curb Weight: approx. 3350 lbs (1520 kg) Gross Vehicle Weight Rating: Refer to VIN sticker or manual 🛡️ Safety Features Ratings NHTSA Front Impact: 5-Star (for driver and passenger) NHTSA Side Impact: 4-Star (front and rear passengers) Active Features Traction Control: Automatic Stability Control (ASC) Stability Control: Dynamic Stability Control (DSC) Braking System: Anti-lock Braking System (ABS), Electronic Brake-force Distribution (EBD), Brake Assist Passive Features Airbags: Frontal airbags (driver & passenger), Side-impact airbags (front seats), Optional Head Protection System (HPS) Seatbelts: 3-point inertia-reel seat belts with pre-tensioners and force limiters 💡 Technology Features Infotainment Head Unit: BMW Business CD or Professional CD/RDS radio, with optional CD changer and navigation system. Audio System: Standard 6-speaker system, optional Harman Kardon premium audio. Driver Assistance Cruise Control: Standard on most models. Parking Sensors: Optional rear Park Distance Control (PDC). Connectivity Telematics: Optional BMW Assist with telematics and emergency services. 🔧 Maintenance Service Intervals Oil Change Interval: Typically every 10,000-15,000 miles or 12-24 months, based on BMW's Condition Based Service (CBS) system or indicated by the vehicle's service reminder. Spark Plug Replacement: Approximately every 60,000-100,000 miles (depending on plug type, e.g., Long-Life Iridium) Brake Fluid Flush: Every 2 years, regardless of mileage. Fluid Specifications Engine Oil Type: BMW Longlife-01 (LL-01) approved synthetic oil, typically SAE 5W-30 or 0W-30. Consult manual for specific viscosity recommendations. Coolant Type: BMW Antifreeze/Coolant, blue color, ethylene glycol-based (G48 specification) Power Steering Fluid: BMW Power Steering Fluid (G002000 or similar) Known Issues Cooling System: Plastic cooling system components (expansion tank, water pump, thermostat housing) can become brittle and leak. Oil Leaks: Valve cover gasket, oil pan gasket, and CCV (Crankcase Ventilation) system are common leak points. Suspension: Worn control arm bushings, sway bar links, and front strut mounts can lead to noise and poor handling. Ignition System: Ignition coils and spark plugs can fail prematurely, causing misfires. 📚 Vehicle History Brand Heritage Brand Philosophy: BMW (Bayerische Motoren Werke AG) is renowned for its focus on 'The Ultimate Driving Machine', emphasizing performance, luxury, and engineering...