🏷️ Basic Information

Make:

Subaru

Model:

Forester

Year:

2004

Market Segment:

Compact Crossover SUV

Generation Code:

SG

Generation Years:

2003-2008

👋 Introduction

Market Positioning:

The 2004 Subaru Forester is positioned as a practical, all-wheel-drive (AWD) compact SUV known for its versatility, safety, and go-anywhere capability, appealing to individuals and families seeking a reliable vehicle for diverse weather conditions and light off-road use.

Key Competitors:

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

Subaru Advantage:

Standard Symmetrical All-Wheel Drive (AWD) system, horizontally opposed 'Boxer' engine for lower center of gravity, excellent visibility, robust build quality.

📋 Manual Details

Manual Type:

Factory Service Repair Manual

Language:

English

Format:

Print

Estimated Page Count:

Approximately 1500-2000 pages (typical for factory service manuals of this era)

📖 Manual Coverage

Powertrain:

Engine, transmission, driveline (AWD system), exhaust

Chassis:

Suspension (front and rear), steering, brakes (front disc, rear disc), wheels, tires

Electrical:

Battery, charging system, starting system, lighting, ignition system, fuses and relays, dashboard instruments, audio system, power accessories (windows, locks, mirrors), security system

Body:

Exterior body panels, interior trim, doors, windows, seats, HVAC system, body control modules

Maintenance:

Scheduled maintenance, fluid changes, filter replacements, inspections

Diagnostics:

Troubleshooting charts, symptom-based diagnostics, OBD-II diagnostic trouble codes (DTCs)

Repair:

Component removal and installation, adjustments, rebuilding procedures

Technical Specifications:

Torque specifications, clearances, measurements, wiring diagrams, exploded views

Depth Level:

Comprehensive: Covers basic maintenance, routine service, complex diagnostics, and major component repairs/rebuilds.

📊 Manual Specifications

Digital Format Options:

Typically available as PDF for digital download or as a physical printed book.

Print Quality Description:

High-quality printing with clear diagrams, schematics, and text.

Binding Type Description:

Durable binding suitable for shop use (e.g., spiral-bound, stitched, or perfect bound).

Paper Type Description:

Durable, often glossy or semi-gloss paper to withstand shop environment and repeated use.

⚙️ Engine Specifications

Engine Code:

EJ253

Engine Type:

2.5L Naturally Aspirated Flat-4 (Boxer) SOHC

Horsepower:

165 hp @ 5,600 rpm (approximate)

Torque:

166 lb-ft @ 3,600 rpm (approximate)

Fuel System Type:

Electronic Port Fuel Injection (PFI)

Fuel Type:

Unleaded Gasoline (87 octane minimum)

Engine Control Unit:

ECU/ECM (Engine Control Module)

Coolant Capacity:

6.8 US Quarts (6.4 Liters) - check manual for exact capacity

Oil Capacity:

4.8 US Quarts (4.5 Liters) with filter change - check manual for exact capacity

Recommended Oil Viscosity:

SAE 5W-30 (check manual for temperature-dependent recommendations)

🔧 Transmission

Transmission Type Standard:

5-Speed Manual Transmission

Transmission Type Optional:

4-Speed Automatic Transmission

AWD System:

Symmetrical All-Wheel Drive (AWD) - full-time system with viscous coupling limited-slip center differential for manual transmission; active AWD for automatic transmission.

Manual Transmission Fluid Type:

API GL-5 SAE 75W-90 (Subaru Genuine Gear Oil recommended)

Automatic Transmission Fluid Type:

Subaru ATF-HP (High Performance) or equivalent.

📐 Dimensions

Length:

177.0 inches (4496 mm)

Width:

69.7 inches (1770 mm)

Height:

63.0 inches (1600 mm)

Wheelbase:

103.0 inches (2616 mm)

Ground Clearance:

7.7 inches (196 mm)

Passenger Volume:

Approximately 97.1 cubic feet (2749 Liters)

Cargo Volume Rear Seats Up:

Approximately 31.1 cubic feet (881 Liters)

Cargo Volume Rear Seats Down:

Approximately 64.6 cubic feet (1829 Liters)

Curb Weight:

3,250 - 3,390 lbs (1474 - 1538 kg), varies by transmission and trim.

Towing Capacity:

2,400 lbs (1089 kg) - check owner's manual for specific towing requirements and limitations.

🛡️ Safety Features

NHTSA Front Crash Test:

5-Star rating (driver and passenger)

IIHS Front Offset Crash Test:

Good rating

Active Safety Features:

Four-wheel disc brakes, ABS (Anti-lock Braking System), EBD (Electronic Brake-force Distribution).

Passive Safety Features:

Front airbags, front side-impact airbags, front and rear head curtain airbags (on some trims), LATCH (Lower Anchors and Tethers for Children) system, seatbelt pretensioners.

💡 Technology Features

Infotainment System:

Basic audio system with AM/FM radio, CD player, and optional premium audio. May include auxiliary input on some later models or aftermarket upgrades.

Speaker Configuration:

Standard 4-speaker or optional 6-speaker system.

Driver Assistance Features:

Limited by modern standards. Primarily relies on ABS and AWD for stability. No advanced driver-assistance systems (ADAS) like adaptive cruise control or lane keeping assist were standard.

Connectivity Options:

Basic, typically no Bluetooth or USB connectivity from the factory. Often relies on aftermarket installations for these features.

🔧 Maintenance

Oil And Filter Change:

Every 3,750 miles (6,000 km) or 3.75 months (severe driving conditions), or 7,500 miles (12,000 km) or 7.5 months (normal driving conditions). Always consult the owner's manual for specific recommendations.

Air Filter Replacement:

Every 15,000 miles (24,000 km) or 15 months, or as needed based on driving conditions.

Cabin Air Filter Replacement:

Every 15,000 miles (24,000 km) or 15 months, or as needed.

Spark Plug Replacement:

Every 60,000 miles (96,000 km) for iridium-tipped spark plugs. (Consult manual for exact type and interval).

Timing Belt Replacement:

For earlier Subaru models, timing belt replacement was critical (e.g., 105,000 miles). However, the 2004 Forester EJ253 engine *may* be a Non-Interference engine or have a timing chain depending on specific sub-variants; verification via the manual is essential. Assuming it's belt-driven, typically around 105,000 miles / 7 years.

Brake Fluid Type:

DOT 3 or DOT 4 (check manual for specific designation).

Power Steering Fluid Type:

Subaru Automatic Transmission Fluid (ATF) or a compatible Dexron III/Mercon type fluid.

Head Gasket Leaks:

While less prevalent than in some earlier Subaru generations, head gasket leaks can still occur on EJ25 engines. Early detection and repair are crucial to prevent engine damage.

Catalytic Converter:

Some models may experience premature catalytic converter failure, often indicated by a check engine light and P0420 code. This can be due to age, fuel issues, or internal engine problems.

Oil Consumption:

Some EJ25 engines can be prone to higher oil consumption. Regular oil level checks are recommended.

📚 Vehicle History

Subaru Heritage:

Subaru, a division of Subaru Corporation (formerly Fuji Heavy Industries), has a long history dating back to the 1910s. It is renowned for its engineering prowess, particularly its horizontally opposed 'Boxer' engines and its pioneering adoption of all-wheel-drive technology in passenger vehicles.

Forester Introduction:

The Subaru Forester was first introduced for the 1998 model year as a compact crossover SUV, bridging the gap between a station wagon and an SUV. It quickly gained popularity for its unique blend of car-like handling and SUV utility, coupled with standard AWD.

Sg Generation Overview:

The SG generation (2003-2008) saw a significant redesign over the previous SF generation. It adopted a more conventional SUV-like styling with a higher roofline and a bolder grille. This generation also introduced a longer wheelbase and wider track for improved stability and interior space.

Production Locations:

Primarily manufactured in Gunma, Japan.

🏆 Awards & Recognition

IIHS Top Safety Pick:

The 2004 Subaru Forester received 'Good' ratings in IIHS front-offset crash tests, contributing to its reputation for safety. While not explicitly labeled 'Top Safety Pick' for this specific year in the same way modern awards are, its performance was commendable.

Consumer Reports Reliability:

Reliability ratings can vary by model year and specific components. Consult historical Consumer Reports data for detailed insights, but generally Subaru vehicles are considered reliable with a focus on powertrain durability.