Subaru Forester 2012 OEM Service Repair Manual download

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🏷️ Basic Information Identification Make: Subaru Model: Forester Year: 2012 Trim Levels Covered: 2.5X, 2.5XT Limited, 2.5XT Touring Generation Fourth Generation Code: SJ (Production 2013-2018, but 2012 is often considered the end of the 3rd gen or transition year depending on market release dates. This manual is for the 2012 model year, which is the final year of the SH generation.) Codes Chassis Code: SH 👋 Introduction Market Position Vehicle Segment: Compact Crossover SUV Key Selling Points: Standard Symmetrical All-Wheel Drive, excellent visibility, practical cargo space, horizontally-opposed 'Boxer' engines. Competitive Analysis Competitors: Honda CR-V, Toyota RAV4, Ford Escape, Nissan Rogue, Mazda CX-5 Subaru Advantage: Standard AWD system provides superior traction and handling in various weather conditions compared to many front-wheel-drive based competitors. Key Features Powertrain Philosophy: Emphasis on Subaru's Boxer engine and Symmetrical AWD for balanced weight distribution and all-weather capability. Utility: Designed for active lifestyles, offering good ground clearance and cargo versatility. 📋 Manual Details Coverage Areas Primary Markets: North America, Global (Specifications may vary by region) Manual Type: OEM Service and Repair Manual Language: English Format: PDF Download Content Source: Original Equipment Manufacturer (OEM) - Technician Level Page Count Estimated Page Count: Over 2500 pages (typical for comprehensive OEM service manuals) Compatibility Operating Systems: Windows (95-98-ME-XP-7), macOS, Linux 📖 Manual Coverage Systems Covered Engine: 2.5L Naturally Aspirated (EJ253), 2.5L Turbocharged (EJ255) Engine Management: ECU diagnostics, sensors, actuators, emission controls (Evap, EGR) Fuel System: Fuel pump, injectors, lines, pressure regulation, tank service Ignition System: Spark plugs, coils, wiring, ignition timing Cooling System: Radiator, thermostat, water pump, hoses, fans, coolant specifications Exhaust System: Manifolds, catalytic converter, mufflers, sensors (O2) Transmission Automatic: 4-speed Automatic (4EAT/4AT) - disassembly, assembly, valve body, torque converter, fluid specifications Transmission Manual: 5-speed Manual (TY754) - disassembly, assembly, clutch, flywheel, fluid specifications Drivetrain: All-Wheel Drive (AWD) system, center differential, rear differential, driveshafts, CV joints Suspension Front: MacPherson struts, control arms, anti-roll bar, bushings, alignment specifications Suspension Rear: Multi-link independent, control arms, coil springs, dampers, alignment specifications Steering System: Power steering pump, rack and pinion, column, tie rods, fluid specifications Brakes Front: Ventilated disc, calipers, pads, rotors, ABS integration Brakes Rear: Solid disc (or ventilated on XT), calipers, pads, rotors, ABS integration Parking Brake: Rear caliper integrated or drum-in-hat, cable adjustment Body Exterior: Body panels, doors, fenders, hood, liftgate, bumpers, trim, glass replacement Body Interior: Dashboard, seats, carpets, headliner, door panels, trim removal HVAC: Air conditioning system, heater core, blower motor, controls, refrigerant R134a Electrical System: Battery, charging system (alternator), starter motor, wiring diagrams Lighting: Headlights, taillights, interior lights, fog lights, bulb replacement Instruments Gauges: Instrument cluster, tachometer, speedometer, warning lights, fuel gauge Infotainment Audio: Radio, speakers, antenna, display unit (basic functionality, not deep electronics repair) Safety Systems: Airbags (SRS), seatbelts, ABS, VDC (Vehicle Dynamics Control) system operation Driver Assistance: Cruise control, traction control (part of VDC) Procedures Included Maintenance: Oil changes, filter replacements, spark plug replacement, fluid flushes, tire rotation, brake pad/rotor replacement Diagnostics: Troubleshooting flowcharts, OBD-II diagnostic codes (DTCs), symptom-based diagnosis Repair: Component removal and installation, assembly and disassembly procedures for all major systems Rebuilds: Engine, transmission, differential rebuild procedures (detailed internal component specifications) Specifications Data: Torque values, clearances, measurements, diagnostic parameters Wiring Diagrams: Comprehensive electrical schematics for all circuits Special Tools: Identification and usage of Subaru-specific or recommended tools Technical Depth Depth: Comprehensive: From routine maintenance to complete engine and transmission overhauls, including diagnostics and component-level repair. Diagnostic Capability: Advanced diagnostic procedures, including sensor data interpretation and actuator testing. 📊 Manual Specifications File Format Format: PDF Searchability: Searchable text-based PDF for quick information retrieval. Print Quality Image Resolution: High-resolution images and diagrams suitable for printing. Binding Type Digital Format: Downloadable Digital File Paper Type Digital Medium: N/A (Digital Delivery) ⚙️ Engine Specifications Primary Engine Engine Code Na: EJ253 Engine Type Na: 2.5L SOHC Naturally Aspirated Flat-4 (Boxer) Horsepower Na: 170 hp @ 5800 rpm (approx.) Torque Na: 174 lb-ft @ 4400 rpm (approx.) Fuel System Na: Electronic Port Fuel Injection (PFI) Turbo Engine Engine Code Turbo: EJ255 Engine Type Turbo: 2.5L DOHC Turbocharged Flat-4 (Boxer) Horsepower Turbo: 224 hp @ 5200 rpm (approx.) Torque Turbo: 226 lb-ft @ 2800 rpm (approx.) Fuel System Turbo: Electronic Sequential Multi-Port Fuel Injection (MPFI) Performance Compression Ratio Na: 10.2:1 Compression Ratio Turbo: 8.4:1 Bore X Stroke Na: 99.5 mm x 79.0 mm Bore X Stroke Turbo: 99.5 mm x 79.0 mm Firing Order: 1-3-2-4 Fuel System Recommended Fuel Na: 87 Octane (Regular Unleaded) Recommended Fuel Turbo: 91 Octane (Premium Unleaded) 🔧 Transmission Standard Automatic Transmission: 4-speed Automatic (4EAT/4AT) with SI-DRIVE (Subaru Intelligent Drive) system on some trims. Optional Manual Transmission: 5-speed Manual Transmission (TY754) Features AWD System: Symmetrical All-Wheel Drive (AWD) standard on all models. Transfer Case: Integrated with transmission, viscous coupling center differential. Automatic Transmission Fluid Type: Subaru Genuine ATF-HP (High Performance) or equivalent Manual Transmission Fluid Type:...

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Description

🏷️ Basic Information

Identification

Make:

Subaru

Model:

Forester

Year:

Trim Levels Covered:

2.5X, 2.5XT Limited, 2.5XT Touring

Generation

Fourth Generation Code:

SJ (Production 2013-2018, but 2012 is often considered the end of the 3rd gen or transition year depending on market release dates. This manual is for the 2012 model year, which is the final year of the SH generation.)

Codes

Chassis Code:

👋 Introduction

Market Position

Vehicle Segment:

Compact Crossover SUV

Key Selling Points:

Standard Symmetrical All-Wheel Drive, excellent visibility, practical cargo space, horizontally-opposed 'Boxer' engines.

Competitive Analysis

Competitors:

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

Subaru Advantage:

Standard AWD system provides superior traction and handling in various weather conditions compared to many front-wheel-drive based competitors.

Key Features

Powertrain Philosophy:

Emphasis on Subaru's Boxer engine and Symmetrical AWD for balanced weight distribution and all-weather capability.

Utility:

Designed for active lifestyles, offering good ground clearance and cargo versatility.

📋 Manual Details

Coverage Areas

Primary Markets:

North America, Global (Specifications may vary by region)

Manual Type:

OEM Service and Repair Manual

Language:

English

Format:

PDF Download

Content Source:

Original Equipment Manufacturer (OEM) - Technician Level

Page Count

Estimated Page Count:

Over 2500 pages (typical for comprehensive OEM service manuals)

Compatibility

Operating Systems:

Windows (95-98-ME-XP-7), macOS, Linux

📖 Manual Coverage

Systems Covered

Engine:

2.5L Naturally Aspirated (EJ253), 2.5L Turbocharged (EJ255)

Engine Management:

ECU diagnostics, sensors, actuators, emission controls (Evap, EGR)

Fuel System:

Fuel pump, injectors, lines, pressure regulation, tank service

Ignition System:

Spark plugs, coils, wiring, ignition timing

Cooling System:

Radiator, thermostat, water pump, hoses, fans, coolant specifications

Exhaust System:

Manifolds, catalytic converter, mufflers, sensors (O2)

Transmission Automatic:

4-speed Automatic (4EAT/4AT) - disassembly, assembly, valve body, torque converter, fluid specifications

Transmission Manual:

5-speed Manual (TY754) - disassembly, assembly, clutch, flywheel, fluid specifications

Drivetrain:

All-Wheel Drive (AWD) system, center differential, rear differential, driveshafts, CV joints

Suspension Front:

MacPherson struts, control arms, anti-roll bar, bushings, alignment specifications

Suspension Rear:

Multi-link independent, control arms, coil springs, dampers, alignment specifications

Steering System:

Power steering pump, rack and pinion, column, tie rods, fluid specifications

Brakes Front:

Ventilated disc, calipers, pads, rotors, ABS integration

Brakes Rear:

Solid disc (or ventilated on XT), calipers, pads, rotors, ABS integration

Parking Brake:

Rear caliper integrated or drum-in-hat, cable adjustment

Body Exterior:

Body panels, doors, fenders, hood, liftgate, bumpers, trim, glass replacement

Body Interior:

Dashboard, seats, carpets, headliner, door panels, trim removal

HVAC:

Air conditioning system, heater core, blower motor, controls, refrigerant R134a

Electrical System:

Battery, charging system (alternator), starter motor, wiring diagrams

Lighting:

Headlights, taillights, interior lights, fog lights, bulb replacement

Instruments Gauges:

Instrument cluster, tachometer, speedometer, warning lights, fuel gauge

Infotainment Audio:

Radio, speakers, antenna, display unit (basic functionality, not deep electronics repair)

Safety Systems:

Airbags (SRS), seatbelts, ABS, VDC (Vehicle Dynamics Control) system operation

Driver Assistance:

Cruise control, traction control (part of VDC)

Procedures Included

Maintenance:

Oil changes, filter replacements, spark plug replacement, fluid flushes, tire rotation, brake pad/rotor replacement

Diagnostics:

Troubleshooting flowcharts, OBD-II diagnostic codes (DTCs), symptom-based diagnosis

Repair:

Component removal and installation, assembly and disassembly procedures for all major systems

Rebuilds:

Engine, transmission, differential rebuild procedures (detailed internal component specifications)

Specifications Data:

Torque values, clearances, measurements, diagnostic parameters

Wiring Diagrams:

Comprehensive electrical schematics for all circuits

Special Tools:

Identification and usage of Subaru-specific or recommended tools

Technical Depth

Depth:

Comprehensive: From routine maintenance to complete engine and transmission overhauls, including diagnostics and component-level repair.

Diagnostic Capability:

Advanced diagnostic procedures, including sensor data interpretation and actuator testing.

📊 Manual Specifications

File Format

Format:

Searchability:

Searchable text-based PDF for quick information retrieval.

Print Quality

Image Resolution:

High-resolution images and diagrams suitable for printing.

Binding Type

Digital Format:

Downloadable Digital File

Paper Type

Digital Medium:

N/A (Digital Delivery)

⚙️ Engine Specifications

Primary Engine

Engine Code Na:

EJ253

Engine Type Na:

2.5L SOHC Naturally Aspirated Flat-4 (Boxer)

Horsepower Na:

170 hp @ 5800 rpm (approx.)

Torque Na:

174 lb-ft @ 4400 rpm (approx.)

Fuel System Na:

Electronic Port Fuel Injection (PFI)

Turbo Engine

Engine Code Turbo:

EJ255

Engine Type Turbo:

2.5L DOHC Turbocharged Flat-4 (Boxer)

Horsepower Turbo:

224 hp @ 5200 rpm (approx.)

Torque Turbo:

226 lb-ft @ 2800 rpm (approx.)

Fuel System Turbo:

Electronic Sequential Multi-Port Fuel Injection (MPFI)

Performance

Compression Ratio Na:

10.2:1

Compression Ratio Turbo:

8.4:1

Bore X Stroke Na:

99.5 mm x 79.0 mm

Bore X Stroke Turbo:

99.5 mm x 79.0 mm

Firing Order:

1-3-2-4

Fuel System

Recommended Fuel Na:

87 Octane (Regular Unleaded)

Recommended Fuel Turbo:

91 Octane (Premium Unleaded)

🔧 Transmission

Standard

Automatic Transmission:

4-speed Automatic (4EAT/4AT) with SI-DRIVE (Subaru Intelligent Drive) system on some trims.

Optional

Manual Transmission:

5-speed Manual Transmission (TY754)

Features

AWD System:

Symmetrical All-Wheel Drive (AWD) standard on all models.

Transfer Case:

Integrated with transmission, viscous coupling center differential.

Automatic Transmission Fluid Type:

Subaru Genuine ATF-HP (High Performance) or equivalent

Manual Transmission Fluid Type:

Subaru Genuine Gear Oil API GL-5 75W-90

📐 Dimensions

Exterior

Length:

4520 mm (178.0 inches)

Width:

1780 mm (70.1 inches)

Height:

1675 mm (66.0 inches)

Wheelbase:

2630 mm (103.5 inches)

Ground Clearance:

8.9 inches (226 mm)

Interior

Passenger Volume:

Approx. 101.7 cu ft

Cargo

Cargo Volume Seats Up:

Approx. 34.4 cu ft

Cargo Volume Seats Down:

Approx. 70.7 cu ft

Weights

Curb Weight Na:

Approx. 3330 - 3500 lbs (1510 - 1590 kg)

Curb Weight Turbo:

Approx. 3570 - 3750 lbs (1620 - 1700 kg)

Gross Vehicle Weight Rating Gvwr:

Approx. 4600 - 4800 lbs

🛡️ Safety Features

Ratings

NHTSA Front Crash Test:

5 Stars (for 2012 model year)

NHTSA Side Crash Test:

5 Stars (for 2012 model year)

NHTSA Rollover Resistance:

4 Stars (Risk of Rollover)

IIHS Top Safety Pick:

Yes (for 2012 model year)

Active Features

Vehicle Dynamics Control:

Standard (VDC includes Traction Control and Electronic Stability Control)

Antilock Braking System:

Standard (ABS)

Electronic Brake-Force Distribution:

Standard (EBD)

Brake Assist:

Standard (BA)

Passive Features

Airbags:

Front, side-curtain, front-seat side airbags

Seatbelts:

3-point ELR front and rear seatbelts with pretensioners and load limiters

Child Seat Anchors:

LATCH (Lower Anchors and Tethers for Children) system

💡 Technology Features

Infotainment

Head Unit Options:

Base CD/MP3 player with auxiliary input, optional Rockford Fosgate audio system, optional navigation system with touch screen.

Connectivity:

Auxiliary audio input jack. Bluetooth connectivity was optional or part of higher trims, often with a hands-free system.

Driver Assistance

Cruise Control:

Standard on most trims.

Rearview Camera:

Optional on certain trims, often integrated with the navigation system.

Key Technologies

Si Drive:

Subaru Intelligent Drive (SI-DRIVE) featured on some models, allowing the driver to select between 'Intelligent', 'Sport', and 'Sport Sharp' modes (Sport Sharp likely exclusive to XT models) to alter engine response and transmission shift patterns.

🔧 Maintenance

Service Intervals

Oil Change Interval:

Every 3,750 miles or 6 months (severe driving conditions) or 7,500 miles or 12 months (normal driving conditions) - Refer to manual for exact conditions and oil type.

Engine Air Filter Replacement:

Every 15,000 - 30,000 miles or 1-2 years (check for debris/clogging)

Cabin Air Filter Replacement:

Every 15,000 - 30,000 miles or 1-2 years (check for debris/odor)

Spark Plug Replacement Na:

Every 105,000 miles (Iridium Type)

Spark Plug Replacement Turbo:

Every 30,000 miles (Platinum Type - consult manual for exact spec)

Transmission Fluid Change Automatic:

Every 30,000 miles (severe) or 60,000 miles (normal) - consult manual

Transmission Fluid Change Manual:

Every 30,000 - 60,000 miles

Coolant Flush Replacement:

Every 30,000 miles or 2 years

Brake Fluid Replacement:

Every 30,000 miles or 2 years

Fluid Specifications

Engine Oil Type Na:

SAE 0W-20 (preferred), SAE 5W-30 also acceptable (API SN or ILSAC GF-5 certified)

Engine Oil Type Turbo:

SAE 5W-30 (API SN or ILSAC GF-5 certified)

Engine Oil Capacity Na:

4.8 US quarts (4.5 L)

Engine Oil Capacity Turbo:

4.8 US quarts (4.5 L)

Coolant Type:

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

Coolant Capacity:

Approx. 7.4 US quarts (7.0 L)

Known Issues

Head Gaskets:

While less prevalent in the EJ253 and EJ255 compared to earlier Subaru engines, some cases of blown head gaskets can still occur, particularly with overheating or severe use. Early detection and proper repair are crucial.

Rear Differential Whine:

Some owners report rear differential whine, which may require fluid change or differential inspection.

Oil Consumption:

Some EJ series engines, especially the EJ255, can exhibit higher oil consumption. Regular checks and topping up are advised.

Catalytic Converter Issues:

Can be susceptible to failure if misfires or unburnt fuel occur, especially in turbocharged models.

📚 Vehicle History

Brand Heritage

Subaru Identity:

Subaru is known for its durable vehicles, Boxer engines, and pioneering the use of Symmetrical All-Wheel Drive as standard equipment.

Model Evolution

Forester Introduction:

The Subaru Forester was first introduced in 1997 as a compact crossover SUV. It bridged the gap between traditional station wagons and SUVs.

Third Generation Sh:

The 2012 model year represents the final year of the third generation (SH chassis, 2009-2013). This generation saw an increase in size, a more conventional SUV-like profile, and improved ride comfort over previous generations.

Production

Manufacturing Location:

Ota, Gunma, Japan (Primary)

🏆 Awards & Recognition

Recognitions

IIHS Award:

Insurance Institute for Highway Safety (IIHS) Top Safety Pick for 2012, indicating good performance in crash tests.

Ratings

Kbb Consumer Ratings:

Generally well-regarded by consumers for its practicality and AWD capability, though specific ratings vary by reviewer and model year.

Certifications

Emissions Certification:

Meets relevant EPA and CARB emissions standards for its model year.