🏷️ Basic Information Identification Make: Subaru Model: Legacy Year: 2004 Codes Chassis Code: BP/BL Engine Codes Covered: EJ253, EJ204 👋 Introduction Market Position Vehicle Segment: Mid-size sedan and wagon, known for its standard All-Wheel Drive and Subaru's reputation for reliability and safety. Competitive Analysis Key Competitors: Toyota Camry, Honda Accord, Nissan Altima, Mazda6, Ford Fusion. Key Features Standard AWD: The hallmark of the Subaru Legacy, providing enhanced traction and stability in various driving conditions. Boxer Engine: Subaru's signature horizontally opposed engine design contributes to a lower center of gravity and smoother operation. Practicality: Available as both a sedan and a versatile wagon, offering practicality for families and individuals. 📋 Manual Details Coverage Areas Coverage Scope: Comprehensive service and repair for all major systems and components. Page Count Estimated Page Count: 1500+ Manual Type Manual Type: Service and Repair Manual Language Language: English Format Format: PDF 📖 Manual Coverage Systems Covered Engine: Internal combustion engine (2.5L Naturally Aspirated, 2.0L Naturally Aspirated), including disassembly, assembly, diagnostics, and repair. Fuel System: Fuel delivery, fuel injection system (MPI), fuel pump, fuel filter, evaporative emissions control system. Cooling System: Radiator, thermostat, water pump, coolant hoses, cooling fan, temperature sensors. Ignition System: Spark plugs, ignition coils, ignition control module, timing. Exhaust System: Exhaust manifolds, catalytic converter, mufflers, oxygen sensors. Transmission Automatic: 4-speed automatic transmission (4EAT), torque converter, valve body, transmission control module (TCM), fluid and filter service. Transmission Manual: 5-speed manual transmission, clutch system, flywheel, transmission fluid service. Drivetrain: Symmetrical All-Wheel Drive (AWD) system, front and rear differentials, driveshafts, CV joints, transfer case. Suspension: Front and rear suspension components, struts, shock absorbers, control arms, bushings, coil springs, anti-roll bars. Steering: Power steering system, steering rack, power steering pump, steering column. Brakes: Front and rear disc brakes, brake calipers, brake pads, brake rotors, brake fluid, ABS system, parking brake. Electrical System: 12V battery, alternator, starter motor, wiring diagrams, fuse box, relays, lighting system. Engine Control System: ECU (Engine Control Unit), sensors (MAP, MAF, O2, TPS, ECT, CKP, CMP), actuators, diagnostic trouble codes (DTCs). Body And Interior: Body panels, doors, hood, trunk, bumpers, interior trim, seats, airbags. HVAC: Heating, Ventilation, and Air Conditioning system, A/C compressor, condenser, evaporator, refrigerant, climate control unit. Procedures Included Maintenance: Scheduled maintenance, oil changes, filter replacements, fluid checks and top-offs, tire rotation. Diagnostics: Troubleshooting guides, symptom-based diagnostics, diagnostic trouble code (DTC) interpretation, electrical system diagnostics. Repair: Component removal and installation, rebuild procedures, component adjustment, calibration. Engine Overhaul: Complete engine disassembly, inspection, machining, and reassembly procedures. Transmission Service: Automatic and manual transmission fluid and filter replacement, internal component service, torque converter replacement. Brake Service: Brake pad and rotor replacement, brake caliper service, brake fluid bleeding, ABS component testing. Suspension Repair: Strut and shock absorber replacement, bushing replacement, alignment specifications. Electrical Component Replacement: Alternator, starter, battery, sensors, actuators, ECUs, ECUs. Airbag System Service: Airbag module replacement, SRS system diagnostics. HVAC System Repair: A/C system recharge, component replacement, leak detection. Technical Depth Depth Of Coverage: Expert-level, covering everything from basic maintenance to complete engine and transmission rebuilds. Diagnostic Tools: Includes information on diagnostic codes (DTCs) and procedures for using OBD-II scanners. Technical Data: Provides specific torque specifications, clearances, fluid capacities, and electrical values. Schematics: Includes detailed wiring diagrams for all electrical systems. 📊 Manual Specifications File Format File Type: PDF (Portable Document Format) Searchability: Searchable text for quick information retrieval. Printability: Printable pages for workshop use. Print Quality Image Resolution: High-resolution images and illustrations. Binding Type Binding: N/A (Digital PDF) Paper Type Paper Quality: N/A (Digital PDF) ⚙️ Engine Specifications Primary Engine Engine Name 1: 2.5L Flat-4 Naturally Aspirated Engine Code 1: EJ253 Displacement 1: 2.5 liters (2498 cc) Configuration 1: Horizontally Opposed (Boxer), SOHC, 16 valves Horsepower 1: 165-175 hp @ 5600-6000 rpm (depending on market/tune) Torque 1: 160-166 lb-ft @ 4000 rpm (depending on market/tune) Secondary Engine Engine Name 2: 2.0L Flat-4 Naturally Aspirated Engine Code 2: EJ204 Displacement 2: 2.0 liters (1994 cc) Configuration 2: Horizontally Opposed (Boxer), DOHC, 16 valves Horsepower 2: 137 hp @ 6000 rpm Torque 2: 127 lb-ft @ 4200 rpm Fuel System Fuel Delivery: Multi-Point Fuel Injection (MPI) Fuel Type: Unleaded Gasoline (87 octane recommended, 91+ for optimal performance) 🔧 Transmission Standard Standard Transmission: 5-speed Manual Transmission Optional Optional Transmission: 4-speed Automatic Transmission (4EAT) with Traction Control Features AWD System: Symmetrical All-Wheel Drive (AWD) with viscous center differential (manual) or electronically controlled multi-plate clutch (automatic). 📐 Dimensions Exterior Sedan Length: Approx. 187.4 inches Wagon Length: Approx. 190.2 inches Width: Approx. 68.1 inches Height: Approx. 56.1 inches (Sedan), 57.7 inches (Wagon) Wheelbase: Approx. 104.0 inches Cargo Sedan Trunk Volume: Approx. 14.4 cubic feet Wagon Cargo Volume: Approx. 39.7 cubic feet (seats up), 71.4 cubic feet (seats down) Weights Curb Weight: Approx. 3100-3400 lbs (depending on trim and transmission) Towing Capacity: Not Recommended (typically) 🛡️ Safety Features Ratings NHTSA Front...