🏷️ Basic Information

Make:

Subaru

Model:

Forester

Year:

2004

Chassis Code:

SG series

Generation Code:

Second Generation (SG)

Generation Years:

2002-2008

👋 Introduction

Segment:

Compact Crossover SUV, known for its AWD capability and practicality.

Usp:

Subaru's Symmetrical All-Wheel Drive system, robust build, and wagon-like utility.

Key Competitors 2003 2004:

Honda CR-V, Toyota RAV4, Ford Escape, Mazda Tribute, Nissan Xterra.

AWD Standard:

Standard Symmetrical All-Wheel Drive across all trims, a significant differentiator.

Engine Orientation:

Horizontally-opposed ('boxer') engine, contributing to a lower center of gravity.

Completeness:

Comprehensive A-Z coverage of all mechanical and electrical repairs, making it a vital resource for any owner or technician.

Visuals:

Extensive use of detailed pictures and diagrams, significantly aiding in understanding complex procedures.

📋 Manual Details

Models Covered:

All Forester models for 2003 and 2004, including various trim levels.

Estimated Page Count:

Likely extensive, typically 1000+ pages for a comprehensive workshop manual.

Type:

Workshop Service Repair Manual

Language:

English

Format:

Printable (digital format assumed, e.g., PDF)

📖 Manual Coverage

Engine Mechanical:

Engine assembly, disassembly, cylinder head, block, pistons, crankshaft, camshafts, timing system, lubrication, cooling system.

Engine Performance:

Engine tuning, fuel injection, ignition system, emissions control.

Transmission Manual:

Manual transmission removal, disassembly, assembly, repair, clutch system.

Transmission Automatic:

Automatic transmission removal, disassembly, assembly, repair, torque converter.

Drivetrain:

All-Wheel Drive (AWD) system, front and rear differentials, drive shafts, CV joints, hubs.

Suspension:

Front and rear suspension components, struts, springs, control arms, anti-roll bars, alignment.

Steering:

Power steering system, steering gear, column, tie rods, power steering pump and lines.

Brakes:

Brake system components (discs, pads, calipers, hoses), ABS system, parking brake.

Electrical System:

Battery, charging system, starting system, lighting, fuses, relays, wiring diagrams.

Body Interior:

Interior trim, seats, dashboard, door panels, headliner, body panels, glass, weatherstripping.

Body Exterior:

Bumpers, fenders, hood, trunk, doors, body shell, rust prevention, paint repair (basic guidelines).

HVAC:

Heating, ventilation, and air conditioning (HVAC) system components, refrigerant, diagnosis.

Safety Systems:

Airbag system, seat belts, SRS diagnostics.

Maintenance:

Regular maintenance tasks, fluid changes, filter replacements, tune-ups.

Troubleshooting:

Diagnostic procedures for common and uncommon faults, fault codes.

Repair Rebuild:

Detailed step-by-step instructions for component removal, disassembly, repair, and reassembly.

Diagnostics:

Electrical system diagnostics, engine diagnostics, transmission diagnostics.

Adjustment Calibration:

Wheel alignment, brake adjustment, clutch adjustment.

Depth:

Comprehensive, covering everything from basic fluid checks to full engine and transmission rebuilds.

Detail Level:

Extremely detailed, with specific torque values, clearances, and procedures.

Diagnostic Tools:

Information on necessary special tools and diagnostic equipment.

📊 Manual Specifications

Digital Format:

Likely PDF, optimized for readability and searchability.

Image Quality:

High-quality images and diagrams, crucial for repair accuracy.

Text Clarity:

Clear, concise text for easy understanding.

Physical Format:

If printed, typically coil-bound or comb-bound for lay-flat use.

Physical Format:

If printed, often on durable, coated paper to withstand workshop environments.

⚙️ Engine Specifications

Engine Code Usdm:

EJ253

Engine Type:

2.5L SOHC EJ253 Flat-4 (Boxer) Engine

Horsepower 2003 2004:

Approximately 165 hp @ 5600 rpm (USDM models)

Torque 2003 2004:

Approximately 170 lb-ft @ 3600 rpm (USDM models)

Fuel Delivery:

Electronic Fuel Injection (EFI) with sequential port injection

Fuel Type:

Unleaded gasoline

Bore X Stroke:

99.5 mm x 79.0 mm

Compression Ratio:

9.7:1

Valve Train:

SOHC (Single Overhead Camshaft) with 16 valves

Timing Belt Interval:

Recommended replacement every 105,000 miles or 7 years, whichever comes first (critical maintenance item).

🔧 Transmission

Transmission Type Base:

5-speed Manual Transmission

Transmission Type Optional:

4-speed Automatic Transmission (4EAT)

AWD System:

Symmetrical All-Wheel Drive with viscous coupling center differential (manual) or electronically controlled clutch pack (automatic).

Automatic Transmission Fluid:

Subaru ATF-HP (High Performance) or equivalent DEXRON-III/MERCON compatible fluid.

Manual Transmission Fluid:

API GL-5, SAE 75W-90 gear oil.

📐 Dimensions

Length:

Approx. 177.0 inches (4495 mm)

Width:

Approx. 69.7 inches (1770 mm)

Height:

Approx. 63.0 inches (1600 mm)

Wheelbase:

Approx. 103.0 inches (2615 mm)

Ground Clearance:

Approx. 7.9 inches (200 mm)

Curb Weight Approx:

3,200 - 3,400 lbs (1450 - 1540 kg), depending on transmission and trim.

🛡️ Safety Features

NHTSA Front Impact Driver:

5-Star (for 2003 models)

NHTSA Front Impact Passenger:

5-Star (for 2003 models)

NHTSA Side Impact Front Driver:

5-Star (for 2003 models)

NHTSA Side Impact Front Passenger:

5-Star (for 2003 models)

IIHS Frontal Offset:

Good (for 2003 models)

ABS:

Standard Anti-lock Braking System (ABS)

AWD:

Symmetrical All-Wheel Drive (Standard)

Airbags:

Driver and front passenger airbags, available side-impact airbags.

Seatbelts:

Three-point seatbelts with pretensioners for front occupants.

💡 Technology Features

Audio System:

Standard AM/FM/CD player, optional premium audio systems with more speakers.

Display:

Basic dashboard display for audio, climate, and warning lights. No integrated navigation or touchscreens typically.

Cruise Control:

Standard cruise control on most trims.

ABS:

Standard ABS system.

Auxiliary Input:

Generally not available on factory head units; aftermarket solutions might be required.

🔧 Maintenance

Engine Oil Change:

Every 3,750 miles or 3.75 months for severe driving conditions; 7,500 miles or 7.5 months for normal driving conditions (refer to owner's manual for exact definition of conditions).

Oil Filter Replacement:

Replace with every oil change.

Engine Air Filter Replacement:

Inspect every 15,000 miles, replace as needed or every 30,000 miles.

Cabin Air Filter Replacement:

Inspect every 15,000 miles, replace as needed or every 30,000 miles.

Timing Belt Replacement:

105,000 miles or 7 years (critical item to prevent catastrophic engine damage).

Engine Oil Type:

SAE 5W-30 synthetic or synthetic blend oil meeting API SJ or higher classification.

Coolant Type:

Subaru Super Coolant (Blue) or equivalent ethylene glycol-based antifreeze with Subaru's specific additive package.

Brake Fluid Type:

DOT 3 or DOT 4 brake fluid.

Head Gasket Leaks:

While less prevalent on the SOHC EJ253 compared to some earlier DOHC EJ25 engines, it's still a potential concern that requires careful inspection and documentation of symptoms like coolant loss or external leaks.

Suspension Wear:

Struts and bushings can wear over time, leading to a less composed ride and potential for clunks or rattles.

Catalytic Converter Failure:

Can occur due to engine misfires or rich fuel conditions, leading to reduced performance and check engine lights.

📚 Vehicle History

Subaru Heritage:

Subaru, a division of Subaru Corporation (formerly Fuji Heavy Industries), has a long history of engineering distinctive vehicles, particularly known for its horizontally-opposed engines and all-wheel-drive systems.

Forester Genesis:

The Forester debuted in 1997 as a 'sport utility wagon,' blending the ride height and capability of an SUV with the driving characteristics of a car.

Sg Generation Introduction:

The second generation (SG) was introduced for the 2003 model year, featuring a significant styling update, a more refined interior, and improved safety features over its predecessor.

Manufacturing Location:

Primarily manufactured in Japan (Gunma Prefecture) and also in Taiwan and Malaysia for specific markets.

🏆 Awards & Recognition

IIHS Top Safety Pick:

The 2003 Forester was recognized as an IIHS Top Safety Pick.

Kbb Best Resale Value:

Subaru vehicles, including the Forester, often receive accolades for strong resale value.