The 2015 Kia Optima Hybrid is a mid-size sedan built on the Hyundai YF platform, offering a compelling blend of stylish design and efficient hybrid powertrain technology. This model year is part of the second generation (TF) of the Optima, known for its refined engineering and advanced features. The Optima Hybrid is powered by a 2.4L Theta II GDI engine paired with a parallel hybrid system, including a synchronous electric motor and a Lithium Polymer battery, delivering approximately 199 combined horsepower. Its design emphasizes aerodynamic efficiency and modern aesthetics, making it a competitive choice in the hybrid sedan segment. This comprehensive Workshop Repair Service Manual in English covers all trim levels and hybrid powertrain configurations for the 2015 Kia Optima. With over 2000 pages, it provides detailed information on all major systems, including the 2.4L Theta II GDI Hybrid engine, the hybrid system components, and the 6-speed automatic hybrid transmission. The manual includes in-depth maintenance procedures, diagnostic troubleshooting flowcharts, repair instructions for component removal and installation, technical specifications, and complete electrical schematics. This resource is designed to assist owners, mechanics, and technicians in maintaining and repairing the vehicle effectively, ensuring optimal performance and longevity. 🏷️ Basic Information Identification Make: Kia Model: Optima Year: 2015 Powertrain Type: Hybrid Body Style: Sedan Generation Generation Code: JF Codes Platform: Hyundai YF Platform 👋 Introduction Market Position Segment: Mid-size Sedan, Hybrid Segment Competitors: Toyota Camry Hybrid, Ford Fusion Hybrid, Honda Accord Hybrid Key Features Powertrain Efficiency: Combines a gasoline engine with an electric motor for improved fuel economy Design: Stylish exterior and interior design, a hallmark of the Optima line Technology: Integration of advanced hybrid technology and standard automotive features 📋 Manual Details Coverage Areas Engine Variants: All Hybrid powertrain configurations Trim Levels: All trim levels Transmission Types: All transmission variants (Hybrid specific) Page Count Estimated Pages: 2000+ Manual Type Type: Workshop Repair Service Manual Language Language: English Format Format: PDF Download 📖 Manual Coverage Systems Covered Engine: 2.4L Theta II GDI Hybrid (G4KC) Hybrid System: Hybrid System Components (Motor, Battery, Power Control Unit) Transmission: 6-Speed Automatic Hybrid Transmission (6F35 Hybrid variant) Drivetrain: Front-Wheel Drive (FWD) Suspension: Front: MacPherson Strut; Rear: Multi-link Brakes: Front: Ventilated Discs; Rear: Solid Discs; Regenerative Braking System Steering: Electric Power Steering (EPS) Electrical: 12V Battery System, High Voltage Battery System, Charging System, Lighting, Fuses, Relays Body And Frame: Body Panel Removal/Installation, Frame Repair (limited) HVAC: Climate Control System, Hybrid HVAC Integration Infotainment: Audio System, Navigation, Display Unit Safety Systems: Airbags, Seatbelts, ABS, ESC, TPMS Procedures Included Maintenance: Scheduled Maintenance, Fluid Changes, Filter Replacements, Inspections Diagnostics: Troubleshooting Flowcharts, DTC Interpretation, System Testing Repair: Component Removal and Installation, Sub-assembly Overhauls, Component Replacement Adjustments: Wheel Alignment, Brake Adjustment (where applicable), Clutch Adjustment (if applicable) Wiring Diagrams: Complete Electrical Schematics for all systems Specifications: Torque Specifications, Tolerances, Component Dimensions Technical Depth Depth: Comprehensive (from basic maintenance to major component overhaul) Diagnostic Capability: Advanced (including hybrid system fault analysis) Repair Detail: Detailed step-by-step procedures with illustrations/diagrams 📊 Manual Specifications File Format Format: PDF Searchability: Searchable Text Content Print Quality Resolution: High Resolution (suitable for printing) Binding Type Binding: N/A (Digital PDF) Paper Type Paper: N/A (Digital PDF) Features Illustrations: Includes diagrams, schematics, and photographic illustrations ⚙️ Engine Specifications Primary Engine Engine Code: G4KC (Theta II GDI) Engine Type: Inline 4-cylinder, Atkinson Cycle, Gasoline Direct Injection (GDI) Displacement: 2.4 Liters (2359 cc) Performance Combined Horsepower: Approx. 199 hp (system total, engine + electric motor) Engine Horsepower: 157 hp @ 5500 RPM Engine Torque: 151 lb-ft @ 4250 RPM Electric Motor Torque: 151 lb-ft (approx.) Fuel System Fuel Type: Unleaded Gasoline Fuel Delivery: Gasoline Direct Injection (GDI) Hybrid Components Hybrid System Type: Parallel Hybrid System Electric Motor Type: Permanent Magnet Synchronous Motor High Voltage Battery Type: Lithium Polymer (Li-Poly) Battery Voltage: Approx. 349V Power Control Unit: Integrated Power Control Unit (IPCU) 🔧 Transmission Standard Type: 6-Speed Automatic Hybrid Transmission Drivetrain: Front-Wheel Drive (FWD) Optional Optional Transmissions: N/A (Hybrid model is specific to the automatic hybrid transmission) Features Hybrid Integration: Seamless integration with electric motor for optimal efficiency and performance Modes: EV Mode, Hybrid Drive, Engine Drive Fluid Specifications Fluid Type: Kia ATF SP-IV RR or equivalent (refer to manual for exact part number and specification) Fluid Capacity Capacity: Approx. 7.4 Liters (Refer to manual for precise capacity) 📐 Dimensions Exterior Length: 191.7 inches (4869 mm) Width: 73.5 inches (1868 mm) Height: 57.9 inches (1470 mm) Wheelbase: 110.0 inches (2794 mm) Interior Front Headroom: 40.7 inches (1034 mm) Rear Headroom: 37.9 inches (963 mm) Front Legroom: 45.5 inches (1156 mm) Rear Legroom: 37.4 inches (950 mm) Cargo Trunk Volume: 15.4 cubic feet (436 Liters) Weights Curb Weight: Approx. 3549 lbs (1610 kg) - Varies by trim Gross Vehicle Weight Rating: Refer to vehicle VIN plate 🛡️ Safety Features Ratings NHTSA Overall Rating: 5-Star (for 2015 Optima, refer...