Segment:
Compact Crossover SUV
Target Audience:
Individuals seeking to maintain, repair, or understand their 2004 Subaru Forester.
Competitors:
Honda CR-V, Toyota RAV4, Ford Escape, Mazda Tribute.
Unique Selling Points:
Subaru's signature Symmetrical All-Wheel Drive, Boxer engine, and a reputation for durability and capability in various conditions.
Powertrain:
Engine (EJ253, EJ255, EJ257), Transmission (Manual & Automatic), Drivetrain (AWD, Differentials, Driveshafts).
Chassis:
Suspension (Front & Rear), Steering, Brakes (including ABS), Wheels & Tires.
Body And Interior:
Body Panels, Doors, Windows, Seats, Trim, HVAC (including Automatic Climate Control).
Electrical:
Wiring Diagrams, Lighting, Ignition System, SRS (Supplemental Restraint System), ECU, Sensors, Audio System.
Emissions Control:
Information on the emissions control system, including EVAP and EGR components.
Maintenance:
Routine maintenance, fluid changes, filter replacements, tune-ups.
Repair Rebuild:
Engine removal/installation, cylinder head overhaul, transmission repair, brake system overhaul, steering component replacement.
Diagnostics:
Troubleshooting common issues, diagnostic procedures for various systems.
Special Tools:
Identification and use of specialized tools required for specific repairs.
Tightening Torques:
Precise torque specifications for critical fasteners throughout the vehicle.
Timing Marks:
Detailed information on setting and verifying valve timing.
Engine Repair Details:
In-depth guides on piston ring replacement, bearing replacement, valve seat work, etc.
Electrical System Diagnostics:
Troubleshooting steps for various electrical circuits, including wiring harness repair and component testing.
HVAC Repair:
Refrigerant handling (with safety precautions), component replacement (compressor, evaporator, condenser), and system diagnostics.
ABS Diagnostics:
Troubleshooting ABS warning lights, sensor testing, and hydraulic unit diagnostics.
Depth:
Detailed instructions for DIY enthusiasts and professional mechanics, including component-level repair and specifications.
Diagnostic Codes:
Coverage of OBD-II diagnostic trouble codes (DTCs) and their interpretation.
Engine Code Na:
EJ253 (2.5L Naturally Aspirated)
Engine Code Turbo:
EJ255 (2.5L Turbocharged) / EJ257 (2.5L Turbocharged STi variant, less common in standard Forester)
Horsepower Na:
Approx. 165 hp @ 5600 rpm
Torque Na:
Approx. 166 lb-ft @ 3600 rpm
Horsepower Turbo:
Approx. 210-225 hp @ 5600 rpm
Torque Turbo:
Approx. 235-250 lb-ft @ 3000-3500 rpm
Injection:
Multi-Point Fuel Injection (MPI)
Configuration:
Horizontally-Opposed (Boxer)
Drive Type:
Timing Belt (EJ253) / Timing Chain (EJ255/EJ257)
Type:
5-Speed Manual Transmission
Type:
4-Speed Automatic Transmission with Sportshift
AWD System:
Symmetrical All-Wheel Drive (AWD) standard on all models.
Automatic Transmission Fluid:
Subaru ATF-HP or equivalent meeting Subaru specification.
Manual Transmission Fluid:
Subaru Extra-S Gear Oil or equivalent meeting Subaru specification.
NHTSA Front Impact:
5-Star Driver and Passenger (2004 Model Year)
IIHS Frontal Offset:
Good (2004 Model Year)
ABS:
Standard Anti-lock Braking System (ABS)
Traction Control:
Available Traction Control System (TCS)
Airbags:
Frontal Airbags, Side Curtain Airbags (optional on some trims).
Srs:
Supplemental Restraint System (SRS) detailed in manual.
Engine Oil Change:
Every 3,750 miles or 3.75 months (severe conditions) / 7,500 miles or 7.5 months (normal conditions).
Timing Belt Replacement:
Every 105,000 miles or 7 years (for EJ253 models).
Engine Oil:
SAE 5W-30 (API SG or higher).
Coolant:
Subaru Super Coolant (Blue) or equivalent P-OAT type.
Brake Fluid:
DOT 3 or DOT 4.
Head Gaskets:
While less prone than older Subaru models, head gasket leaks can still occur, especially on turbocharged engines.
Catalytic Converter:
Can fail due to age or internal engine issues, affecting emissions and performance.
O2 Sensors:
Can degrade over time, leading to check engine lights and poor fuel economy.
Manufacturer Focus:
Specialty vehicle manufacturer with a focus on AWD, rally-derived technology, and durable Boxer engines.
Generation:
Second Generation (SG) Forester (2003-2008).
Key Updates For 2004:
Minor styling updates, potential for turbocharged models (XT).
Manufacturing Location:
Gunma Plant, Japan
