🏷️ Basic Information Identification Make: BMW Model: 335i Model Generation: E90/E91/E92/E93 Model Years Covered: 2006, 2007, 2008, 2009, 2010 Codes Chassis Codes: E90 (Sedan), E91 (Wagon/Touring), E92 (Coupe), E93 (Convertible) 👋 Introduction Market Position Segment: Sport Sedan/Coupe/Convertible, Premium Performance Target Audience: Enthusiast drivers, performance-oriented buyers, luxury segment Competitive Analysis Key Competitors: Audi A4, Mercedes-Benz C-Class, Lexus IS, Infiniti G37 Key Features Model Defining Features: Twin-turbocharged inline-six engine (N54), rear-wheel-drive bias, sophisticated chassis dynamics, premium interior appointments Manual Value Proposition: Provides in-depth technical knowledge essential for maintaining and repairing BMW's complex N54 engine and advanced electronic systems. 📋 Manual Details Coverage Areas Primary Coverage: Service, Repair, Workshop Scope: Comprehensive, including diagnostics, maintenance, repair, and overhaul Page Count Estimated Page Count: 1500+ Manual Type Type: Service and Repair Workshop Manual Language Language: English Format Format: Digital (PDF) 📖 Manual Coverage Systems Covered Powertrain: Engine (N54), Fuel System, Exhaust System, Cooling System, Lubrication System Drivetrain: Transmission (Manual & Automatic), Driveline, Differentials, Axles Chassis: Suspension (Front & Rear), Steering System, Brakes (ABS, DSC), Wheels & Tires Electrical: Engine Control Unit (ECU), Body Control Module (BCM), Lighting, Power Accessories, Infotainment, Diagnostic Systems Body: Exterior Body Panels, Interior Trim, Doors, Windows, Convertible Top (where applicable) Procedures Included Maintenance: Scheduled maintenance, oil changes, filter replacements, spark plug replacement, fluid checks and changes Repair: Engine repair and overhaul, transmission service, brake system repairs, suspension component replacement, electrical diagnostics and repair Diagnostics: Troubleshooting guides, diagnostic trouble codes (DTCs), component testing, wiring diagrams Special Procedures: Turbocharger diagnosis and repair, fuel injection system servicing, electronic component calibration, convertible top operation troubleshooting Technical Depth Depth: Expert Level - suitable for professional mechanics and advanced DIYers Detail Level: Detailed step-by-step instructions, torque specifications, special tool requirements, exploded views, schematics 📊 Manual Specifications File Format File Type: PDF Searchability: Fully searchable text for quick information retrieval Print Quality Quality: High-resolution, clear diagrams and text, suitable for printing Binding Type Binding Type: N/A (Digital Format) Paper Type Paper Type: N/A (Digital Format) ⚙️ Engine Specifications Primary Engine Engine Code: N54B30 Configuration: 3.0L (2979cc) Twin-Turbocharged Inline-6 Bore X Stroke: 84.0 mm x 89.6 mm Compression Ratio: 10.2:1 Valvetrain: Double Overhead Camshafts (DOHC), 24 Valves, VANOS (Variable Valve Timing) Performance Horsepower Est: 300 hp @ 5800 rpm Torque Est: 300 lb-ft @ 1400-5000 rpm Redline Est: 7000 rpm Fuel System Fuel Delivery: High-Pressure Direct Injection (Bosch HPI) Fuel Type: Premium Unleaded Gasoline (91+ Octane Recommended) Turbochargers: Two Siemens VDO (later BorgWarner) turbochargers with intercoolers 🔧 Transmission Standard Transmission Type Std: 6-Speed Manual (Getrag GS6-37BZ) Optional Transmission Type Opt: 6-Speed ZF 6HP19TU (Automatic with Steptronic) Features Clutch Type: Dual-Mass Flywheel Automatic Features: Adaptive shift logic, manual shifting mode (Steptronic), sport mode Fluid Specs Manual Transmission Fluid: BMW MTF LT-2 or equivalent (e.g., Pentosin FFL-3) Automatic Transmission Fluid: ZF Lifeguardfluid 6 (LF-6) or equivalent (e.g., Pentosin ATF1) 📐 Dimensions Exterior Length E90: 181.8 inches (4619 mm) Width E90: 71.5 inches (1815 mm) Height E90: 56.7 inches (1441 mm) Wheelbase E90: 108.7 inches (2760 mm) Wheelbase E92: 108.7 inches (2760 mm) Cargo Trunk Capacity E90: 15.0 cubic feet (425 liters) Weights Curb Weight Est Manual: 3600 - 3800 lbs (1633 - 1724 kg) Curb Weight Est Auto: 3700 - 3900 lbs (1678 - 1769 kg) 🛡️ Safety Features Ratings NHTSA Front Impact Driver: 5-Star (for applicable models) NHTSA Front Impact Passenger: 5-Star (for applicable models) IIHS Top Safety Pick: Yes (for various model years and configurations) Active Features Standard Safety Features: Dynamic Stability Control (DSC), Anti-lock Braking System (ABS), Cornering Brake Control (CBC), Brake Assist, Traction Control Optional Safety Features: Active Head Restraints, Tire Pressure Monitoring System (TPMS) Passive Features Airbags: Front dual-stage airbags, front side-impact airbags, head protection system (curtain airbags for sedans/wagons) 💡 Technology Features Infotainment Available Systems: iDrive infotainment system (CCC or CIC depending on year/options), Professional Navigation, CD Changer, Logic7 Audio System Connectivity Options: Bluetooth (hands-free calling, audio streaming), USB/Auxiliary inputs (depending on options) Driver Assistance Available Features: Adaptive Xenon Headlights, Park Distance Control (PDC), Cruise Control Advanced Tech: Complex electronic control units managing engine, transmission, braking, and chassis dynamics. 🔧 Maintenance Service Intervals Oil Change Interval: Condition Based Service (CBS) system, typically 10,000-15,000 miles or 12-24 months Spark Plug Replacement: Approx. 60,000 miles (N54 specific recommendation varies by update) Brake Fluid Flush: Every 2 years (regardless of mileage) Fluid Specifications Engine Oil Type: BMW Longlife-01 (LL-01) or BMW Longlife-01 FE (LL-01 FE) compliant synthetic oil, typically 5W-30 or 0W-30 Engine Oil Capacity: Approx. 6.5 liters (6.9 US quarts) Coolant Type: BMW Blue Antifreeze/Coolant (G48 ethylene glycol based) Known Issues N54 Common Issues: High-pressure fuel pump (HPFP) failure, carbon buildup on intake valves, turbocharger wastegate rattle/failure, ignition coil and injector issues, oil cooler gasket leaks. E90 Chassis Common Issues: Water pump and thermostat failure, serpentine belt tensioner and pulleys, vacuum line leaks, power steering hose leaks....