Basic Information Identification Make: BMW Model: 3 Series Model Variant: 323i Chassis Code: E46 Generation Generation: Fifth Generation Codes Production Years: 1999-2005 Introduction Market Position Target Audience: DIY enthusiasts, independent repair shops, and professional BMW technicians Competitive Analysis Value Proposition: Provides dealership-level repair information at a fraction of the cost, empowering owners to perform maintenance and repairs themselves. Key Features Diagram Quality: Top-quality diagrams, exploded views, and illustrations for clarity and precision in repair procedures. Instruction Style: Step-by-step instructions, written clearly for both novice and experienced users. Delivery Method Delivery: Instant Download Manual Details Coverage Areas Body Styles Covered: Sedan, Coupe, Convertible, Sport Wagon Page Count Estimated Page Count: Varies by specific edition, but typically 1000+ pages for comprehensive coverage Manual Type Manual Classification: Full Service & Repair Manual Language Language: English Format Digital Format: PDF Manual Coverage Systems Covered Powertrain: Engine (M52TU B25), Cooling System, Fuel System, Exhaust System, Ignition System Drivetrain: Transmission (Manual & Automatic), Clutch, Driveshafts, Differentials, Axles Chassis: Suspension (Front & Rear), Steering System, Braking System (including ABS) Electrical: Battery, Charging System, Starting System, Lighting System, Instrumentation, Body Electronics (incl. DME, EWS, LCM), HVAC Control Body And Trim: Exterior Body Panels, Interior Trim, Doors, Windows, Seats, Roof Systems (incl. Convertibles) Procedures Included Maintenance: Routine inspections, fluid changes, filter replacements, belt replacements, spark plug replacement Troubleshooting: Diagnostic procedures for common and uncommon issues, fault code interpretation, symptom-based troubleshooting charts Repair: Step-by-step repair instructions for all major mechanical and electrical components, including component removal, installation, and adjustment Diagnostics: Detailed diagnostic procedures utilizing BMW's diagnostic tools (e.g., DIS, ISTA) and wiring diagrams Technical Depth Level Of Detail: Comprehensive, from basic maintenance to complete engine and transmission rebuilds, including component-level diagnostics and repair Manual Specifications File Format Digital File Format: PDF Print Quality Printability: Full Printable, allowing users to print specific sections or the entire manual Binding Type Binding Type Digital: N/A (Digital PDF) Paper Type Paper Type Digital: N/A (Digital PDF) Features Searchability: Searchable text within the PDF for quick access to specific information Zoom Capability: YES, allows for detailed viewing of diagrams and text Engine Specifications Primary Engine Engine Code: M52TU B25 Engine Type: Inline 6-cylinder, DOHC, 24 valves Displacement: 2494 cc (2.5 Liters) Bore X Stroke: 84.0 mm x 75.0 mm Compression Ratio: 10.2:1 Performance Horsepower Peak: 189 hp @ 5500-6000 rpm Torque Peak: 236 Nm (174 lb-ft) @ 3500 rpm Fuel System Fuel Injection: Sequential Multi-Point Fuel Injection (SFI) Fuel Type: Premium Unleaded Gasoline (91 Octane Recommended) Engine Management Engine Control Unit: Bosch Motronic ME 7.2 Transmission Standard Standard Transmission: 5-Speed Manual Optional Optional Transmission: 5-Speed Automatic (Steptronic) Features Transmission Fluid Type Auto: BMW ATF LT-71141 (or equivalent) Dimensions Exterior Wheelbase: 2760 mm (108.7 inches) Length: 4471 mm (176.0 inches) - Sedan Width: 1739 mm (68.5 inches) Height: 1415 mm (55.7 inches) - Sedan Weights Curb Weight Approx: 1500-1580 kg (3300-3480 lbs) Safety Features Ratings NHTSA Front Impact Driver: 5-Star (for models tested) NHTSA Front Impact Passenger: 5-Star (for models tested) Active Features Traction Control: Asc (Automatic Stability Control) Electronic Stability: DSC (Dynamic Stability Control) ABS: Standard Anti-lock Braking System Passive Features Airbags: Frontal airbags, side airbags, optional head airbags Technology Features Infotainment Infotainment System: BMW Business CD, BMW Professional CD, optional navigation system (MKIV) Driver Assistance Cruise Control: Standard cruise control Parking Sensors: Optional rear parking sensors (Park Distance Control - PDC) Connectivity Phone Integration: Optional Bluetooth preparation and cradles for mobile phones Maintenance Service Intervals Oil Change Interval Typical: Every 10,000-15,000 miles or annually, as indicated by the Condition Based Service (CBS) system. Brake Fluid Flush: Every 2 years Coolant Flush: Every 3-4 years or as per CBS Fluid Specifications Engine Oil Type: BMW Longlife-01 (LL-01) synthetic oil, e.g., 5W-30 or 0W-30 Engine Oil Capacity: 6.5 Liters (6.9 US Quarts) Coolant Type: BMW Blue Antifreeze/Coolant (G48 ethylene glycol based) Known Issues Cooling System: Plastic expansion tank leaks, water pump failure, thermostat housing leaks, radiator leaks (common E46 issues) Suspension: Control arm bushings, ball joints, sway bar links wear Electrical: ABS/ASC module failure, VANOS solenoid issues, ignition coil failures Oil Leaks: Valve cover gasket, oil filter housing gasket, oil pan gasket Vehicle History Brand Heritage Brand Philosophy: BMW's reputation for 'Ultimate Driving Machine' and sporty luxury sedans. Model Evolution E46 Introduction: The E46 generation replaced the E36, featuring a more refined chassis, advanced technology, and improved aerodynamics. E46 Facelift: Models from 2002 onwards received a facelift (LCI) with revised bumpers, headlights, taillights, and interior trim. Production Manufacturing Locations: Primarily Germany (Dingolfing, Regensburg) Awards & Recognition Recognitions Car And Driver 10Best: E46 3 Series models frequently appeared on Car and Driver's 10Best lists during its production run.