🏷️ Basic Information Identification Make: BMW Model: 3-Series Generation Chassis Code: F30 (Sedan), F31 (Touring/Wagon), F34 (Gran Turismo), F35 (Long Wheelbase Sedan) Codes Model Year: 2012 👋 Introduction Market Position Segment: Compact Executive Sedan/Wagon/Gran Turismo Competitors: Audi A4, Mercedes-Benz C-Class, Lexus IS, Cadillac ATS, Infiniti Q50. Key Features Driving Dynamics: Renowned for its balanced chassis, rear-wheel-drive bias (with xDrive AWD available), and engaging driving experience. Powertrain Options: Wide range of efficient yet powerful 4-cylinder and 6-cylinder TwinPower Turbo petrol and diesel engines. Technology: Introduction of advanced iDrive infotainment, driver assistance systems, and connectivity features. 📋 Manual Details Coverage Areas Full Coverage: Yes, A-Z repairs Vehicle Specificity: Vehicle specific, not generic Page Count Estimated Pages: Over 3000 (typical for comprehensive BMW service manuals) Manual Type Type: Service and Repair Manual Language Language: English Format Format: Digital (likely PDF), searchable 📖 Manual Coverage Systems Covered Powertrain: Engine mechanicals, fuel system, ignition, emissions control, cooling, lubrication, exhaust systems for all F30/F31/F34/F35 variants. Drivetrain: Manual and automatic transmissions, transfer cases (if applicable), differentials, drive shafts, CV joints, axles. Chassis: Suspension (front and rear), steering systems (power steering, electric power steering), braking systems (ABS, DSC, parking brake), wheel and tire specifications. Electrical: Full electrical diagrams, battery, charging system, starter, lighting, instrument cluster, comfort electronics, infotainment systems, onboard computers (ECUs). Body: Body panels, doors, windows, locks, exterior trim, interior trim, climate control, HVAC, safety restraints (airbags, seatbelts). Procedures Included Maintenance: Scheduled maintenance intervals, oil changes, filter replacements, fluid checks and top-offs, brake pad/rotor replacement, spark plug replacement, belt replacement. Diagnostics: Troubleshooting guides, symptom-based diagnostics, diagnostic trouble codes (DTCs), testing procedures for components. Repair: Detailed step-by-step repair instructions for virtually all mechanical and electrical components, including engine rebuilds, transmission overhaul, suspension component replacement. Installation: Component removal and installation procedures, timing belt/chain alignment, brake bleeding procedures, diagnostic tool usage (e.g., ISTA/D). Technical Depth Depth: Comprehensive, suitable for professional technicians and advanced DIYers. Includes detailed specifications, torque values, diagnostic procedures, and wiring diagrams. 📊 Manual Specifications File Format File Type: PDF Searchability: Text-searchable Print Quality Quality: High-resolution, suitable for printing individual pages or sections. Binding Type Binding: N/A (Digital Format) Paper Type Paper: N/A (Digital Format) ⚙️ Engine Specifications Primary Engine Engine Code Examples: N20 (2.0L I4 Turbo Petrol), N55 (3.0L I6 Turbo Petrol), N47 (2.0L I4 Turbo Diesel), B47 (2.0L I4 Turbo Diesel - later models, but may be referenced). Performance Horsepower Range: Approximately 180 hp to 300+ hp (depending on specific engine variant). Torque Range: Approximately 200 lb-ft to 300 lb-ft (depending on specific engine variant). Fuel System Injection Type: Direct injection (High-Pressure Fuel Injection - HPFI) Turbocharging: TwinPower Turbo (single twin-scroll turbocharger for most engines). 🔧 Transmission Standard Transmission Type Standard: 6-speed manual (e.g., GS6-37BG for petrol, GS6-45DZ for diesel) Optional Transmission Type Optional: 8-speed Steptronic automatic (e.g., ZF 8HP45, ZF 8HP70) Features Driving Modes: Sport, Comfort, Eco Pro modes affecting transmission shift points and throttle response. AWD Availability: xDrive all-wheel-drive system available on most models. 📐 Dimensions Exterior F30 Sedan Length: Approx. 181.4 - 182.2 inches (4608 - 4628 mm) F31 Touring Length: Approx. 181.4 inches (4608 mm) F34 Gt Length: Approx. 190.2 inches (4830 mm) Weights Curb Weight Range: Approx. 3300 - 3800 lbs (1497 - 1724 kg) Gross Vehicle Weight Rating: Varies by model and configuration, typically 4500-5000 lbs. 🛡️ Safety Features Ratings NHTSA Rating: Generally received high ratings, often 5-star overall safety rating in relevant markets for the F30 generation. IIHS Rating: Top Safety Pick or Top Safety Pick+ designation for the F30 generation. Active Features Stability Control: Dynamic Stability Control (DSC) including Automatic Stability Control (ASC), Traction Control (ASC+T), Cornering Brake Control (CBC). Braking Assist: Anti-lock Braking System (ABS), Brake Assist (BA), Dynamic Traction Control (DTC). Passive Features Airbags: Front airbags, side airbags, knee airbags (driver), head curtain airbags (front and rear passengers). Seatbelts: Three-point inertia-reel seatbelts with pretensioners and force limiters. 💡 Technology Features Infotainment System Name: iDrive (e.g., CIC or NBT Professional Navigation systems) Features: Navigation, Bluetooth connectivity, USB audio interface, SiriusXM Satellite Radio, optional Harman Kardon surround sound. Driver Assistance Systems Available: Optional features include Adaptive Cruise Control (ACC), Lane Departure Warning (LDW), Blind Spot Detection, Parking Assistant, Surround View cameras. Connectivity Connectivity Suite: BMW ConnectedDrive services, offering remote access via smartphone app, internet access, and real-time traffic information. 🔧 Maintenance Service Intervals Oil Service: Condition Based Service (CBS) typically indicates oil changes around every 10,000 - 15,000 miles or 12-24 months, depending on driving conditions. Brake Fluid: Every 2 years, regardless of mileage. Spark Plugs: Around 60,000 miles for petrol engines (e.g., N20, N55), though CBS may adjust this. Cabin Air Filter: Typically every 12,000 - 15,000 miles or annually. Fluid Specifications Engine Oil: BMW Longlife-01 (LL-01) or BMW Longlife-04 (LL-04) for diesel engines, typically SAE 0W-30 or 5W-30 synthetic. Specific viscosity depends on engine and climate....