2012 SUBARU LEGACY Service Repair Manual

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🏷️ Basic Information Identification Make: Subaru Model: Legacy Year: 2012 Codes Chassis Code: BM/BR 👋 Introduction Market Position Segment: Mid-size sedan, known for AWD and wagon variants. Target Audience: Individuals...

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Description

🏷️ Basic Information

Identification

Make:

Subaru

Model:

Legacy

Year:

Codes

Chassis Code:

BM/BR

👋 Introduction

Market Position

Segment:

Mid-size sedan, known for AWD and wagon variants.

Target Audience:

Individuals seeking reliable, all-weather capable transportation with a focus on practicality and safety.

Competitive Analysis

Key Competitors:

Toyota Camry, Honda Accord, Mazda6, Ford Fusion, Nissan Altima.

Key Features

Differentiators:

Standard Symmetrical All-Wheel Drive (except some base models in certain markets), Boxer engine layout, strong safety ratings.

Manual Value Proposition:

Provides dealership-level diagnostic and repair information for maintaining optimal vehicle performance and longevity.

📋 Manual Details

Coverage Areas

Primary Coverage:

North America

Secondary Coverage:

Global (excluding region-specific variations)

Page Count

Estimated Pages:

2000+

Manual Type

Type:

Factory Service Manual (FSM)

Distinction:

Distinguished from Owner's Manual; focuses on repair and diagnostics

Language

Primary Language:

English

Format

File Format:

📖 Manual Coverage

Systems Covered

Engine:

Comprehensive coverage for 2.5L Naturally Aspirated, 2.5L Turbocharged (EJ255), and 3.6L Naturally Aspirated engines.

Transmission:

Manual (MT) and Automatic (CVT/AT) transmissions, including AWD system integration.

Brakes:

Front and rear brake systems, ABS, EBD, and stability control (VDC).

Suspension:

Front MacPherson strut and rear double wishbone suspension, alignment procedures.

Electrical:

Full electrical schematics, wiring diagrams, ECU functions, sensor diagnostics, lighting, power accessories.

Body:

Body panels, chassis, doors, windows, interior trim, HVAC, restraints systems.

Diagnostics:

OBD-II system, diagnostic trouble codes (DTCs), troubleshooting flowcharts.

Procedures Included

Maintenance:

Routine scheduled maintenance, fluid changes, filter replacements, inspections.

Repair:

Engine overhaul, transmission repair, brake component replacement, suspension rebuilds, electrical component repair.

Troubleshooting:

Systematic diagnostic procedures for common and uncommon issues.

Installation:

Component replacement and installation instructions.

Specifications:

Torque specifications, clearances, measurements, and alignment data.

Technical Depth

Depth:

In-depth technical detail, suitable for professional technicians and advanced DIYers.

Diagnostics Level:

Advanced diagnostics, including circuit testing and signal analysis.

📊 Manual Specifications

File Format

File Type:

Searchable PDF

Printability:

Printable pages

Print Quality

Image Resolution:

High-resolution images and diagrams

Binding Type

Binding:

N/A (Digital PDF)

Paper Type

Paper Quality:

N/A (Digital PDF)

⚙️ Engine Specifications

Primary Engine

Engine Code 1:

Engine Type 1:

2.5L DOHC Flat-4 (Boxer) Naturally Aspirated

Engine Code 2:

EJ255

Engine Type 2:

2.5L DOHC Turbocharged Flat-4 (Boxer)

Engine Code 3:

EZ36D

Engine Type 3:

3.6L DOHC Flat-6 (Boxer) Naturally Aspirated

Performance

Horsepower 2.5L Na:

170 hp @ 5600 rpm

Torque 2.5L Na:

170 lb-ft @ 4100 rpm

Horsepower 2.5L Turbo:

265 hp @ 5200 rpm

Torque 2.5L Turbo:

277 lb-ft @ 2000 rpm

Horsepower 3.6L Na:

256 hp @ 6000 rpm

Torque 3.6L Na:

247 lb-ft @ 4400 rpm

Fuel System

Fuel Delivery 2.5L Na:

Sequential multi-port fuel injection (SFI)

Fuel Delivery 2.5L Turbo:

Sequential multi-port fuel injection (SFI)

Fuel Delivery 3.6L Na:

Sequential multi-port fuel injection (SFI)

Recommended Fuel:

87 Octane (89 recommended for Turbocharged models for optimal performance)

🔧 Transmission

Standard

Standard Transmission:

6-speed manual (MT) on select models

Optional

Optional Transmission 1:

CVT (Lineartronic) - standard on most 2.5i models

Optional Transmission 2:

5-speed automatic (AT) - standard on 3.6R models

Features

Drive System:

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

AWD Type:

Variable torque distribution AWD (with multi-plate clutch center differential for MT, electronically controlled hydraulic transfer clutch for CVT/AT)

📐 Dimensions

Exterior

Length:

189.4 inches (4810 mm)

Width:

71.7 inches (1820 mm)

Height:

57.5 inches (1460 mm)

Wheelbase:

109.4 inches (2780 mm)

Cargo

Trunk Volume Sedan:

14.7 cubic feet (416 liters)

Weights

Curb Weight Min:

3310 lbs (1501 kg) - 2.5i CVT

Curb Weight Max:

3650 lbs (1656 kg) - 3.6R AT

🛡️ Safety Features

Ratings

NHTSA Overall Rating:

5-Star (2012 Model Year)

IIHS Top Safety Pick:

Active Features

Vehicle Dynamics Control:

Standard (VDC)

Traction Control:

Standard

Brake Assist:

Standard

Passive Features

Airbags:

Front, front side-impact, side-curtain airbags.

Seatbelts:

Pretensioner and force-limiter front seatbelts, LATCH system.

💡 Technology Features

Infotainment

Head Unit Options:

Standard AM/FM/CD with auxiliary input, optional Rockford Fosgate audio system, optional navigation system.

Connectivity Options:

Bluetooth hands-free calling and audio streaming available on select trims/options.

Driver Assistance

Available Features:

Rearview camera (on some trims), EyeSight driver assistance system (introduced later in the generation, not typically on 2012).

Instrumentation:

Analog gauges with multi-function display, trip computer.

🔧 Maintenance

Service Intervals

Oil Change Interval:

Every 6,000 miles or 6 months (whichever comes first), or 3,750 miles if operating under severe conditions (refer to manual for specifics).

Air Filter Replacement:

Every 30,000 miles

Cabin Air Filter Replacement:

Every 15,000 miles or 12 months

Spark Plug Replacement 2.5L Na:

Iridium spark plugs: 105,000 miles

Spark Plug Replacement 3.6L Na:

Iridium spark plugs: 105,000 miles

Timing Belt Or Chain:

Timing chain on 2.5L & 3.6L engines (no scheduled replacement); Timing belt on some older EJ25 variants (not primary for 2012 NA, but check manual for specific turbo variant if applicable).

Fluid Specifications

Engine Oil Type:

SAE 0W-20 Synthetic (API SN or higher)

Engine Oil Capacity 2.5L:

4.8 US quarts (4.5 liters) with filter change

Engine Oil Capacity 3.6L:

5.8 US quarts (5.5 liters) with filter change

Coolant Type:

Subaru Super Coolant (Blue) or equivalent (Ethylene Glycol based with Subaru chemistry)

Transmission Fluid Atf Cvt:

Subaru CVT Fluid (K0421Y0000 or equivalent)

Transmission Fluid Mtf:

Subaru Manual Transmission Fluid (75W-90 GL-5 or equivalent)

Differential Fluid:

Subaru Differential Gear Oil (75W-90 GL-5 or equivalent)

Known Issues

Common Problems 1:

Oil consumption (particularly on earlier FB25 engines), potential for head gasket issues (though less prevalent than on older EJ engines), CVT fluid degradation.

Common Problems 2:

Wheel bearing wear, brake pad and rotor wear due to AWD system load.

📚 Vehicle History

Brand Heritage

Company Origin:

Japan, founded in 1917.

Key Technologies:

Pioneered AWD and boxer engines in mass production.

Model Evolution

Legacy Introduction:

First generation introduced in 1989.

Fifth Generation Launch:

Fifth generation (BM/BR) launched for the 2010 model year.

2012 Model Year Updates:

Minor styling revisions and potential feature package updates over the previous year.

Production

Assembly Location:

Lafayette, Indiana, USA and Gunma, Japan

🏆 Awards & Recognition

Recognitions

IIHS Awards:

Consistently received good or acceptable ratings in IIHS crash tests, earning Top Safety Pick status.

Ratings

Consumers Reports Reliability:

Generally rated average to above average for reliability, with some model year and engine-specific variations.

Certifications

Emissions Compliance:

Meets EPA and CARB emissions standards for the model year.