Subaru Forester 2012 Workshop Repair Service Manual

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🏷️ Basic Information Identification Make: Subaru Model: Forester Year: 2012 Body Style: Compact SUV / Crossover Codes Chassis Code: SJ Series 👋 Introduction Market Position Segment: Compact Crossover SUV Usp:...

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Description

🏷️ Basic Information

Identification

Make:

Subaru

Model:

Forester

Year:

Body Style:

Compact SUV / Crossover

Codes

Chassis Code:

SJ Series

👋 Introduction

Market Position

Segment:

Compact Crossover SUV

Standard Symmetrical All-Wheel Drive, strong safety record, practical cargo space, boxer engine.

Competitive Analysis

Key Competitors:

Honda CR-V, Toyota RAV4, Mazda CX-5, Nissan Rogue, Ford Escape.

Key Features

Platform:

Subaru SG chassis evolution.

Design Philosophy:

Functional, utilitarian, with emphasis on all-weather capability and driver confidence.

📋 Manual Details

Coverage Areas

Coverage Scope:

All Models, All Engines, All Trim Levels, All Transmissions

Page Count

Estimated Pages:

2000+

Manual Type

Type:

Workshop Repair Service Manual

Language

Language:

English

Format

Format:

PDF Download

📖 Manual Coverage

Systems Covered

Engine:

2.5L naturally aspirated (EJ253), 2.5L turbocharged (EJ255) - including diagnosis, repair, overhaul, specifications

Transmission:

5-speed manual, 4-speed automatic (4EAT), Lineartronic CVT - including overhaul, diagnostics, fluid specifications

Drivetrain:

Symmetrical All-Wheel Drive (AWD) system, differentials (front, center, rear), driveshafts, axle shafts, hubs, wheel bearings

Suspension:

Front MacPherson struts, rear multi-link suspension, springs, shock absorbers, control arms, bushings, alignment specifications

Brakes:

Front ventilated discs, rear solid discs, ABS system, VDC (Vehicle Dynamics Control), brake pad replacement, rotor resurfacing/replacement, hydraulic system bleed

Steering:

Power assisted rack and pinion, steering column, tie rods, alignment, power steering fluid specifications

Electrical:

Battery, charging system, starter motor, ignition system, lighting (headlights, taillights, interior), fuses, relays, wiring diagrams, OBD-II diagnostics

Body And Chassis:

Frame construction, body panels, doors, hood, tailgate, glass, interior trim, sound deadening, rust proofing

HVAC:

Air conditioning system, heater core, blower motor, evaporator, condenser, refrigerant types and recharge, climate control diagnostics

Fuel System:

Fuel tank, fuel pump, fuel filter, fuel injectors, fuel pressure regulator, evaporative emissions control (EVAP)

Exhaust System:

Exhaust manifold, catalytic converter, muffler, pipes, oxygen sensors

Cooling System:

Radiator, thermostat, water pump, coolant types and capacity, fan operation, hoses, expansion tank

Safety Systems:

Airbag system (SRS), seatbelt pre-tensioners, child seat anchor points (LATCH/ISOFIX)

Procedures Included

Maintenance:

Oil changes, filter replacements (oil, air, cabin), spark plug replacement, fluid checks and top-ups, tire rotation and pressure, brake inspection

Diagnostics:

Troubleshooting charts, symptom-based diagnostics, fault code interpretation (DTCs), component testing procedures

Repair Overhaul:

Engine rebuild procedures, transmission overhaul, suspension component replacement, brake caliper replacement, fuel injector cleaning and replacement

Installation:

Accessory installation guidelines, component replacement steps, torque specifications for all fasteners

Adjustment:

Wheel alignment procedures, parking brake adjustment, belt tension adjustments

Troubleshooting Guides:

Specific guides for common issues such as starting problems, overheating, rough idle, transmission slippage, electrical gremlins

Technical Depth

Depth:

Comprehensive - from basic scheduled maintenance to complete engine and transmission rebuilds, including detailed electrical schematics and diagnostic strategies.

📊 Manual Specifications

File Format

File Type:

Searchable PDF

Print Quality:

High-resolution, suitable for printing individual pages or sections.

Binding Type

Binding:

N/A (Digital Download)

Paper Type

Paper Quality:

N/A (Digital Download)

⚙️ Engine Specifications

Primary Engine

Engine Code Na:

EJ253

Engine Type Na:

2.5-liter SOHC naturally aspirated flat-four (Boxer)

Engine Code Turbo:

EJ255 (Optional on specific trims)

Engine Type Turbo:

2.5-liter DOHC turbocharged flat-four (Boxer)

Performance

Horsepower Na:

170 hp @ 5,800 rpm

Torque Na:

174 lb-ft @ 4,100 rpm

Horsepower Turbo:

265 hp @ 5,200 rpm (for turbo models, e.g., Forester XT)

Torque Turbo:

247 lb-ft @ 2,800 rpm (for turbo models)

Fuel System

Fuel Delivery:

Multi-point Fuel Injection (MPI)

Recommended Fuel:

87 Octane Regular Unleaded (NA), 91 Octane Premium Unleaded (Turbo)

🔧 Transmission

Standard

Transmission Type:

5-speed Manual Transmission (Part-time AWD engagement on some early manual models, full-time on later ones)

Optional

Transmission Type Auto:

4-speed Automatic Transmission (4EAT) with electronically controlled AWD

Transmission Type Cvt:

Subaru Lineartronic Continuously Variable Transmission (CVT) with electronically controlled AWD (market dependent availability)

Features

AWD System Manual:

Typically viscous coupling limited-slip center differential with mechanical front and rear differentials (check specific model variant).

AWD System Auto Cvt:

Active AWD (electronically controlled, variable torque split based on driving conditions).

📐 Dimensions

Exterior

Length:

Approximately 181.3 inches (4,605 mm)

Width:

Approximately 70.1 inches (1,780 mm)

Height:

Approximately 65.4 inches (1,660 mm)

Wheelbase:

Approximately 103.2 inches (2,620 mm)

Ground Clearance:

Approximately 8.7 inches (220 mm)

Cargo

Cargo Volume Behind Rear Seats:

Approximately 34.4 cubic feet (974 liters)

Cargo Volume With Rear Seats Folded:

Approximately 70.7 cubic feet (2,002 liters)

Weights

Curb Weight:

Approximately 3,300 - 3,600 lbs (1,500 - 1,630 kg), varies by trim and drivetrain.

Towing Capacity:

Up to 2,400 lbs (1,090 kg) with optional towing package.

🛡️ Safety Features

Ratings

NHTSA Overall Rating:

5-Star (for models equipped with specific safety features).

IIHS Top Safety Pick:

Yes (for most models in this year).

Active Features

Vehicle Stability Control (VSC)

Anti-lock Braking System (ABS)

Traction Control:

Traction Control System (TCS)

Passive Features

Airbags:

Front airbags, front side-impact airbags, curtain airbags (front and rear).

Seatbelts:

3-point seatbelts with pretensioners and load limiters for all seating positions.

Child Anchors:

Lower Anchors and Tethers for Children (LATCH) system.

💡 Technology Features

Infotainment

Head Unit:

Standard AM/FM/CD/MP3 audio system with auxiliary input. Optional touch-screen navigation systems were available.

Bluetooth:

Optional Bluetooth hands-free connectivity available on higher trim levels.

Driver Assistance

Cruise Control:

Standard cruise control.

Rearview Camera:

Optional rearview camera integrated with navigation or audio display.

Connectivity

Auxiliary Input:

Standard 3.5mm auxiliary audio input jack.

🔧 Maintenance

Service Intervals

Oil Change Interval:

Every 3,750 miles or 3 months (severe conditions) or 7,500 miles or 6 months (normal conditions) - consult manual for exact schedule.

Air Filter Replacement:

Every 15,000 miles or 12 months (inspect more frequently).

Cabin Filter Replacement:

Every 15,000 miles or 12 months.

Spark Plug Replacement:

Iridium spark plugs: 60,000 miles for NA models. Consult manual for turbocharged models and specific recommendations.

Transmission Fluid Change Auto:

Every 30,000 - 60,000 miles depending on driving conditions (consult manual for specific fluid and interval).

Transmission Fluid Change Cvt:

Every 30,000 - 45,000 miles for CVT fluid (critical for longevity). Check manual for specific fluid and interval.

Fluid Specifications

Engine Oil Type:

SAE 0W-20 Synthetic (API SN or ILSAC GF-5 compliant)

Engine Oil Capacity:

Approximately 4.8 US quarts (4.5 liters) with filter for 2.5L NA; slightly more for turbo models. Refer to manual.

Coolant Type:

Subaru Super Coolant (Blue) or equivalent silicate-free long-life coolant.

Coolant Capacity:

Approximately 7.0 US quarts (6.6 liters). Refer to manual.

Brake Fluid Type:

DOT 3 or DOT 4.

Power Steering Fluid Type:

Genuine Subaru Power Steering Fluid or equivalent Dexron III ATF.

Differential Fluid Type Front Rear:

SAE 75W-90 Gear Oil (API GL-5).

Transmission Fluid Type Auto:

Subaru ATF HP or equivalent.

Transmission Fluid Type Cvt:

Subaru CVT Fluid (NS-2 or NS-3 depending on specific CVT model). Critically important to use the correct fluid.

Known Issues

Head Gaskets:

While less prevalent than in earlier Subaru models, head gasket leaks can still occur, particularly with age and mileage. The EJ253 engine is generally more robust than its predecessors.

Catalytic Converter:

Potential for premature failure or clogging due to carbon buildup or oil consumption, especially in turbo models.

Cv Axle Boots:

Cracked or torn CV axle boots can lead to joint failure if not addressed promptly.

Wheel Bearings:

Can develop noise (humming/grinding) with age and mileage, often requiring replacement.

Cv Transmission Longevity:

CVT fluid changes are critical. Neglecting them can lead to premature transmission failure. Proper maintenance is key.

📚 Vehicle History

Brand Heritage

Brand Focus:

Subaru is renowned for its Symmetrical All-Wheel Drive system and horizontally-opposed Boxer engines, often associated with adventure and rugged capability.

Model Evolution

Generation:

Third Generation (2008-2013) - This 2012 model falls within this generation, representing a refinement of the previous design with updated styling and technology.

Previous Generation:

Second Generation (2003-2008)

Next Generation:

Fourth Generation (2014-2018) - Introduced a significantly redesigned chassis and updated powertrains.

Production

Manufacturing Location:

Ota City, Gunma Prefecture, Japan.

🏆 Awards & Recognition

Recognitions

IIHS Awards:

Consistently awarded IIHS 'Top Safety Pick' for its class, highlighting its structural integrity and safety features.

Consumer Reports Ratings:

Often receives above-average predicted reliability ratings from publications like Consumer Reports, though specific model years can vary.