🏷️ Basic Information Identification Make: BMW Model: 135i Year: 2011 Codes Chassis Code: E82 (Coupe), E88 (Convertible) Engine Code: N54B30 👋 Introduction Market Position Positioning: The 2011 BMW 135i was positioned as a compact, rear-wheel-drive performance coupe and convertible, offering a potent turbocharged engine and BMW's renowned driving dynamics in a smaller, more accessible package than the 3-series. Competitive Analysis Competitors: Primary competitors included the Audi A3, Infiniti G37 Coupe/Convertible, and Cadillac CTS Coupe. It competed by offering a more driver-focused experience and a significantly more powerful engine for its segment. Key Features Performance Focus: The hallmark of the 135i is its N54 twin-turbocharged 3.0L inline-six engine, delivering strong acceleration and a wide powerband. Handling: Renowned for its balanced chassis, RWD layout, and engaging handling characteristics, providing a classic BMW driving feel. Design: Offered in coupe (E82) and convertible (E88) body styles, featuring BMW's distinctive styling cues of the era. 📋 Manual Details Coverage Areas Coverage Scope: Comprehensive repair and service for the 2011 BMW 135i Page Count Estimated Pages: Extensive (Software-based, providing access to thousands of pages of technical data) Manual Type Type: Official Service and Repair Manual Software Language Language: English Format Format: Digital Software (likely PDF or proprietary executable) 📖 Manual Coverage Systems Covered Engine: 3.0L Twin-Turbo Inline-6 (N54B30): Engine mechanical, cooling, lubrication, fuel injection, ignition, emissions, turbocharger system, ECU diagnostics. Transmission: 6-speed Manual (GS6-37BZ) and 6-speed Automatic (GA6HP19Z): Clutch, gearbox, torque converter, transmission control, fluid specifications. Drivetrain: Rear-wheel drive (RWD): Driveshaft, differential, axles, CV joints. Brakes: Front and Rear Disc Brakes: Hydraulic system, ABS, DSC (Dynamic Stability Control), brake pad/rotor replacement, bleeding procedures. Suspension: Front MacPherson struts, Rear multi-link: Springs, shock absorbers, control arms, bushings, wheel alignment specifications. Steering: Hydraulic power steering: Steering rack, pump, hoses, troubleshooting. Electrical System: 12V system, alternator, battery, starter, lighting, wiring diagrams, fuses, relays, modules (CAS, DME, FRM, JBE). Body And Interior: Body panels, doors, hood, trunk, seats, airbags, climate control system (HVAC), interior trim, sound system. Diagnostic Systems: On-Board Diagnostics (OBD-II), fault codes (DTCs), diagnostic procedures, reset procedures. Procedures Included Routine Maintenance: Oil and filter changes, air filter replacement, spark plug replacement, cabin filter replacement, brake fluid flush. Major Repairs: Engine overhaul, transmission rebuild, turbocharger replacement, clutch replacement, suspension component replacement. Troubleshooting: Step-by-step diagnostic guides for common and uncommon issues, electrical fault finding, engine performance problems. Component Replacement: Detailed instructions for replacing virtually all mechanical and electrical components. Technical Specifications: Torque specifications, fluid capacities, clearances, wear limits. Technical Depth Depth: Extremely high: Covers everything from basic fluid checks to complete engine and transmission overhauls, including detailed diagnostic trees and wiring diagrams. 📊 Manual Specifications File Format Format Details: Searchable digital format for quick access to information, potentially with interactive diagrams and troubleshooting flowcharts. Print Quality Print Quality: N/A (Digital software, however, diagrams and text are designed for clarity and accuracy) Binding Type Binding: N/A (Digital software) Paper Type Paper Type: N/A (Digital software) ⚙️ Engine Specifications Primary Engine Engine Type: 3.0L Twin-Turbocharged Inline-6 Engine Code: N54B30 Bore X Stroke: 84.0 mm x 89.6 mm Displacement: 2979 cc (3.0 Liters) Compression Ratio: 10.2:1 Valve Train: DOHC, 24 valves, VANOS (Variable Valve Timing) Performance Horsepower: 300 hp @ 5800 rpm Torque: 300 lb-ft @ 1300-5000 rpm (with overboost) Redline: 7000 rpm Fuel System Fuel Delivery: Direct Injection (High-Pressure Fuel Pump, Injectors) Fuel Type: Premium Unleaded Gasoline (91+ Octane Recommended) Turbocharger Type: Parallel Twin-Turbochargers Boost Pressure: Approximately 10-12 psi (stock) 🔧 Transmission Standard Type: 6-speed Manual Transmission (GS6-37BZ) Optional Type: 6-speed Steptronic Automatic Transmission (GA6HP19Z) Features Manual Gear Ratios: 1st: 4.11, 2nd: 2.32, 3rd: 1.54, 4th: 1.18, 5th: 1.00, 6th: 0.85, Reverse: 3.55 Automatic Features: Steptronic manual shifting mode, Adaptive Transmission Control (ATC), electronic shift lock. Fluid Manual Fluid Spec: BMW MTF LT-3 (or equivalent GL-4 SAE 75W-80 synthetic) Automatic Fluid Spec: ATF LT-5 (or equivalent Esso/Exxon JWS 3309 / Toyota Type T-IV) 📐 Dimensions Exterior Wheelbase: 104.7 inches (2659 mm) Length: Coupe: 168.7 inches (4285 mm); Convertible: 169.0 inches (4293 mm) Width: Coupe: 69.5 inches (1765 mm); Convertible: 69.5 inches (1765 mm) Height: Coupe: 54.6 inches (1387 mm); Convertible: 54.7 inches (1390 mm) Ground Clearance: Approximately 4.7 inches (119 mm) Cargo Trunk Volume: Coupe: 11.1 cu ft (314 L); Convertible: 8.5 cu ft (240 L) (with top up) Weights Curb Weight: Coupe: ~3400-3500 lbs (1542-1588 kg); Convertible: ~3700-3900 lbs (1678-1769 kg) (varies by options) Gross Vehicle Weight Rating Gvwr: Approximately 4450-4650 lbs (2018-2109 kg) 🛡️ Safety Features Ratings NHTSA Ratings: Likely received 4 or 5-star ratings in various categories from NHTSA for its model year (specific year data may vary, but generally strong for BMW). Active Features Stability Control: Dynamic Stability Control (DSC) with integrated ABS, Traction Control (ASC+T), Cornering Brake Control (CBC). Braking Assist: Brake Assist (BA), Dynamic Brake Control (DBC). Tire Pressure Monitoring: Yes (RPA - Reifen Pannen Anzeige) Passive...