🏷️ Basic Information Identification Make: Porsche Model: 911 Model Generation: 991.1 Model Year: 2012 Codes Chassis Code: 991 Factory Code Identifier: Type 991 👋 Introduction Market Position Segment: Luxury Sports Car Brand Reputation: Renowned for Performance, Engineering, and Driving Dynamics Competitive Analysis Key Competitors: Ferrari 458 Italia, McLaren MP4-12C, Lamborghini Gallardo, Aston Martin DB9 Key Features Platform: Introduction of the all-new 991 platform, a significant redesign from the 997 generation Design Philosophy: Evolutionary design with a longer wheelbase, wider track, and more advanced aerodynamics Technology Integration: Increased use of advanced materials (aluminum, high-strength steel) for weight reduction and improved rigidity 📋 Manual Details Coverage Areas Manual Type: Service and Repair Manual Software Language: English Format: Digital Software Page Count Estimated Page Count: Approximately 10,000+ pages (typical for comprehensive digital Porsche manuals) Content Type: Official Licensed, Dealer-Level Information 📖 Manual Coverage Systems Covered Engine: Complete Engine Overhaul, Diagnostics, Performance Tuning, Cooling System, Lubrication System, Fuel System, Ignition System, Emissions Control, Engine Management Systems (DME) Transmission: Manual Transmission (G9A/G97), PDK (Porsche Doppelkupplung) Automatic Transmission, Clutch System, Gearbox Overhaul, Fluid Changes, Electronic Control Unit (TCU) Diagnostics Drivetrain: All-Wheel Drive (PTM - Porsche Traction Management) System, Rear Differential, Axles, Driveshafts, CV Joints, Wheel Bearings Suspension: Front and Rear Suspension Systems, PASM (Porsche Active Suspension Management), Active Anti-Roll Stabilization, Spring and Damper Replacement, Bushing Replacement, Wheel Alignment Specifications Brakes: Hydraulic Brake System, ABS (Anti-lock Braking System), PSM (Porsche Stability Management), PCCB (Porsche Ceramic Composite Brakes) (where applicable), Brake Pad and Rotor Replacement, Brake Fluid Flush and Bleed, Parking Brake System Steering: Power Steering System, Electric Power Steering (EPS) System, Steering Rack and Column, Power Steering Fluid Specifications Electrical: 12V Electrical System, Battery, Alternator, Starter Motor, Lighting Systems (Headlights, Taillights, Interior), Fuses and Relays, Wiring Diagrams, Control Modules (ECUs), CAN Bus Network Communication Body: Body Panels, Doors, Hood, Trunk, Roof, Bumpers, Body Sealants, Exterior Trim, Chassis Repair, Corrosion Protection Interior: Seats, Dashboard, Center Console, Trim Panels, Seatbelts, Airbag Systems, Climate Control System (HVAC), Interior Lighting Infotainment: PCM (Porsche Communication Management), Audio System, Navigation System, Bluetooth Connectivity, Optional Sound Systems Procedures Included Maintenance: Scheduled Maintenance Intervals, Oil Changes, Filter Replacements (Oil, Air, Cabin, Fuel), Spark Plug Replacement, Fluid Level Checks and Top-Ups, Belt Inspection and Replacement, Brake Service, Tire Rotation and Balancing Repair: Engine Component Replacement (pistons, valves, bearings), Transmission Rebuild, Suspension Component Replacement, Brake Component Replacement, Electrical Component Troubleshooting and Replacement, Body Panel Repair and Replacement Diagnostics: Troubleshooting Guides for All Major Systems, Diagnostic Trouble Codes (DTCs), Sensor Testing, Actuator Testing, Wiring Diagram Interpretation, Use of Porsche Diagnostic Tools (PIWIS) Troubleshooting: Systematic Fault Finding Procedures, Common Problems and Solutions, Symptom-Based Troubleshooting Tables Technical Depth Depth: Comprehensive, Dealer-Level Detail Suitable for Professional Technicians and Advanced DIYers Special Tools: Identification and Usage of Porsche-Specific Special Tools and Equipment 📊 Manual Specifications File Format Compatibility: Compatible with Windows and macOS Operating Systems Accessibility: Searchable Text, Hyperlinked Navigation, Printable Sections Print Quality Resolution: High-Resolution Diagrams and Illustrations Binding Type Binding: N/A (Digital Software) Paper Type Paper: N/A (Digital Software) ⚙️ Engine Specifications Primary Engine Engine Code: MA1.01 (3.4L Carrera), MA1.02 (3.8L Carrera S) Engine Type: Naturally Aspirated Flat-Six (Boxer) Displacement Carrera: 3436 cc (3.4 Liters) Displacement Carrera S: 3800 cc (3.8 Liters) Performance Horsepower Carrera: 350 PS (345 hp) @ 7400 rpm Horsepower Carrera S: 400 PS (394 hp) @ 7400 rpm Torque Carrera: 390 Nm (288 lb-ft) @ 5600 rpm Torque Carrera S: 440 Nm (325 lb-ft) @ 5600 rpm Redline: 7800 rpm Fuel System Fuel Type: Premium Unleaded Gasoline (RON 98 / 91 AKI recommended) Fuel Delivery: Direct Fuel Injection (DFI) Engine Management: Bosch Motronic MED 17.1.1 (or similar) 🔧 Transmission Standard Carrera: 7-Speed Manual Transmission (Type G9A) Optional Carrera: 7-Speed PDK (Porsche Doppelkupplung) Dual-Clutch Automatic Transmission Carrera S: 7-Speed PDK (Porsche Doppelkupplung) Dual-Clutch Automatic Transmission Features Pdk Modes: Normal, Sport, Sport Plus, Manual (Paddle Shifters) Gear Ratios Manual: Detailed ratios available in manual (e.g., 1st: 3.91, 2nd: 2.35, 3rd: 1.67, 4th: 1.34, 5th: 1.12, 6th: 0.96, 7th: 0.82) Transmission Fluid Type: Specific Porsche ATF for PDK, Manual Transmission Fluid (MTF) for manual gearbox (refer to manual for exact specifications and part numbers) 📐 Dimensions Exterior Wheelbase: 2450 mm (96.5 inches) Length: 4491 mm (176.8 inches) Width Excluding Mirrors: 1808 mm (71.2 inches) Height: 1304 mm (51.3 inches) Weights Curb Weight Carrera Manual: Approximately 1395 kg (3075 lbs) Curb Weight Carrera Pdk: Approximately 1410 kg (3109 lbs) Gross Vehicle Weight Rating: Refer to vehicle placard 🛡️ Safety Features Ratings NHTSA Rating: Not officially rated by NHTSA in the same manner as mass-market vehicles, but designed to meet stringent global safety standards. Active Features ABS: Standard Anti-lock Braking System (ABS) Psm: Porsche Stability Management (PSM) - Includes traction control and stability control functions Pba: Porsche Brake Assist Pas: Porsche Active Suspension Management (PASM) Passive Features Airbags: Driver and Passenger...