🏷️ Basic Information

Make:

Subaru

Model:

Outback

Model Variant:

Legacy (Outback designation applied to wagon variants)

Year:

2010

Chassis Code:

BP (Wagon), BL (Sedan - Legacy, though this manual specifically targets Outback)

Engine Code Primary:

EZ30D (3.0L H6)

Engine Code Secondary:

EJ253 (2.5L Flat-4)

👋 Introduction

Vehicle Segment:

Mid-size Crossover SUV / Station Wagon.

Key Selling Points:

Symmetrical All-Wheel Drive, Boxer engine, practicality, safety, wagon-like utility with SUV ground clearance.

Key Competitors:

Toyota RAV4, Honda CR-V, Ford Edge, Nissan Murano, Mazda CX-7.

Drivetrain:

Standard Symmetrical All-Wheel Drive (AWD).

Engine Layout:

Horizontally-opposed (Boxer) engine.

Body Style:

Two-box wagon/crossover.

📋 Manual Details

Regions Covered:

Global (primarily North American specifications where applicable, but wiring diagrams are universal)

Trim Levels Covered:

All trims equipped with specified engine options (e.g., 2.5i, 3.0R)

Approximate Page Count:

500-700+ pages (typical for full wiring manuals)

Manual Classification:

Wiring Electrical Manual / Service Manual Supplement

Language:

English

Digital Format:

PDF

📖 Manual Coverage

Powertrain Electrical:

Engine Control Module (ECM), ignition system, fuel system, emissions control, sensors (oxygen, knock, camshaft/crankshaft position), actuators (injectors, ignition coils), transmission control module (TCM - for automatic).

Chassis Electrical:

Braking system (ABS, VDC), steering system (power steering control), suspension (active damping if equipped).

Body Electrical:

Lighting (headlights, taillights, interior, fog lights), power windows, power locks, power mirrors, sunroof, windshield wipers, horn, door latches, seat controls (power/heated).

Comfort And Convenience:

HVAC system controls, audio system, navigation system (if equipped), keyless entry and immobilizer, remote start system (if equipped), cruise control, interior climate controls.

Safety Systems:

Airbag system (SRS), seatbelt pretensioners, active safety systems (VDC/Traction Control wiring), tire pressure monitoring system (TPMS).

Instrumentation And Gauges:

Instrument cluster wiring, warning lights, speedometer, tachometer, fuel gauge, temperature gauge.

Communications And Data:

CAN bus communication lines, diagnostic connectors (OBD-II), radio antenna, satellite radio wiring.

Wiring Diagrams:

Detailed circuit diagrams for all major systems, including component locations, wire colors, connector pinouts, and wire gauges.

Troubleshooting Guides:

Diagnostic flowcharts and procedures for common electrical faults, symptom-based troubleshooting.

Component Locations:

Diagrams illustrating the physical location of electrical components, relays, fuses, and modules.

Fuse And Relay Information:

Identification and function of all fuses and relays, including amperage ratings and their associated circuits.

Connector Pinouts:

Detailed pin assignments for all electrical connectors within the vehicle's wiring harness.

Ground Points:

Identification and location of all chassis and body ground points.

Wiring Harness Information:

Layout and routing of main wiring harnesses, identification of junction points and splice locations.

Diagnostic Level:

Advanced diagnostics, circuit tracing, voltage drop testing, continuity testing, signal integrity analysis.

Repair Scope:

Component replacement, harness repair (splicing, connector replacement), module diagnosis and potential replacement.

Installation Procedures:

Wiring requirements for aftermarket accessories (may be limited, but base system wiring is covered).

📊 Manual Specifications

PDF Features:

Searchable text, bookmarked chapters, high-resolution diagrams.

Diagram Clarity:

High resolution, clear line work, color-coded wires (if original)

Digital Format Notes:

Downloadable PDF, accessible on multiple devices.

Digital Paper Simulation:

Simulates high-quality paper stock for ease of reading.

⚙️ Engine Specifications

Engine Code:

EZ30D

Engine Type:

3.0L Naturally Aspirated Flat-6 (Boxer)

Bore X Stroke:

89.2 mm x 79.0 mm

Displacement:

2999 cc (3.0 Liters)

Compression Ratio:

10.0:1

Horsepower:

243 hp @ 6600 rpm

Torque:

217 lb-ft @ 4200 rpm

Valvetrain:

DOHC, 24 valves (4 per cylinder)

Fuel System:

Electronic Multi-Port Fuel Injection (MPI)

Fuel Requirement:

Premium Unleaded Gasoline (91 octane or higher recommended for 3.0L)

Cooling System:

Pressurized liquid cooling system

Emission Control:

Catalytic converter, secondary air injection system (depending on market).

Engine Code:

EJ253

Engine Type:

2.5L Naturally Aspirated Flat-4 (Boxer)

Displacement:

2457 cc (2.5 Liters)

Horsepower:

170 hp @ 5800 rpm

Torque:

170 lb-ft @ 4400 rpm

Fuel Requirement:

Regular Unleaded Gasoline (87 octane)

🔧 Transmission

Transmission Type 3.0L:

5-speed automatic (5EAT)

Transmission Type 2.5L:

4-speed automatic (430LE)

Manual Transmission Availability:

5-speed manual (available on some 2.5L models in specific markets).

AWD System:

Symmetrical All-Wheel Drive (Active Torque Split for 5EAT, Variable Transfer Clutch AWD for 4-speed AT and Manual).

Electronic Transmission Control:

Adaptive shift control, manual mode (Sportshift/Snow-Ice modes on 5EAT).

Automatic Transmission Fluid Type 5Eat:

Subaru ATF HP

Automatic Transmission Fluid Type 4At:

Subaru ATF-HP or DEXRON III/MERCON equivalent (check specific model year).

📐 Dimensions

Length:

4790 mm (188.6 in)

Width:

1770 mm (69.7 in)

Height:

1670 mm (65.7 in)

Wheelbase:

2745 mm (108.1 in)

Ground Clearance:

213 mm (8.4 in)

Wheel Bolt Pattern:

5x100

Wheel Size:

17-inch or 18-inch alloy wheels

Passenger Volume:

Approx. 106.5 cu ft

Cargo Volume Behind Rear Seats:

Approx. 34.4 cu ft

Cargo Volume With Rear Seats Folded:

Approx. 70.1 cu ft

Curb Weight 2.5L:

Approx. 3400-3500 lbs

Curb Weight 3.0L:

Approx. 3550-3650 lbs

Towing Capacity:

2,700 lbs (when properly equipped with trailer hitch)

🛡️ Safety Features

NHTSA Front Crash Test Rating:

5-Star (2010 Model Year)

NHTSA Side Crash Test Rating:

5-Star (2010 Model Year)

IIHS Top Safety Pick:

Yes (for 2010 Model Year)

Traction Control System:

Standard

Vehicle Dynamics Control:

Standard (integrated with ABS and Traction Control)

Anti-Lock Braking System:

Standard (ABS)

Electronic Brakeforce Distribution:

Standard (EBD)

Brake Assist:

Standard (BA)

Airbag System:

Front, front side-impact, side-curtain airbags (standard across all trims).

Seatbelt Pretensioners:

Standard front seatbelts with pretensioners and load limiters.

Child Seat Anchors:

LATCH (Lower Anchors and Tethers for CHildren) system.

Tire Pressure Monitoring System:

Standard (TPMS)

💡 Technology Features

Audio System Standard:

6-speaker AM/FM/CD stereo with auxiliary input.

Audio System Optional:

Upgraded audio systems with subwoofer, Bluetooth connectivity, and available navigation system.

Navigation:

Optional factory-installed touch-screen navigation system.

Cruise Control:

Standard electronic cruise control.

Rear Vision Camera:

Available on some trim levels, often integrated with navigation system.

Bluetooth Hands-Free:

Available on higher trims, allowing for phone calls and sometimes audio streaming.

Usb Port:

Available on some models for audio device connectivity.

Engine Management System:

Denso Engine Control Module (ECM) controlling fuel, ignition, and emissions.

🔧 Maintenance

Oil Change Interval:

Every 3,750 miles (severe) or 7,500 miles (normal) using synthetic oil. Refer to manual for specific driving conditions.

Engine Air Filter:

Replace every 15,000 miles (severe) or 30,000 miles (normal).

Cabin Air Filter:

Replace every 15,000 miles or annually.

Spark Plugs 2.5L:

Replace at 105,000 miles (Iridium type).

Spark Plugs 3.0L:

Replace at 60,000 miles (Iridium type).

Transmission Fluid Change Automatic:

Inspect every 30,000 miles. Replace if towing or under severe conditions, typically around 45,000-60,000 miles. Consult manual for specific ATF-HP recommendation.

Coolant Flush:

Replace every 30,000 miles or 2 years (Super Coolant - Subaru's long-life coolant).

Brake Fluid Flush:

Replace every 30,000 miles or 2 years.

Timing Belt Or Chain:

Boxer engines in this era use timing chains, which are generally maintenance-free for the life of the engine. However, tensioners and guides can wear over time.

Engine Oil Type 2.5L:

SAE 0W-20 Synthetic (preferred); SAE 5W-30 acceptable.

Engine Oil Type 3.0L:

SAE 0W-30 or 5W-30 Synthetic (preferred for 3.0L H6).

Engine Oil Capacity 2.5L:

4.8 US quarts (4.5 L)

Engine Oil Capacity 3.0L:

5.7 US quarts (5.4 L)

Coolant Type:

Subaru Super Coolant (Blue)

Brake Fluid Type:

DOT 3 or DOT 4.

Head Gaskets Legacy Engines:

While less common on H6 engines, EJ25 (2.5L) engines from earlier Subaru generations were known for head gasket failures. The EJ253 used in this model is generally considered more robust, but vigilance is still recommended, especially in higher mileage vehicles.

Catalytic Converter Failure:

Can occur due to exhaust leaks or engine misfires, leading to poor performance and check engine lights.

Wheel Bearing Wear:

A common wear item on many AWD vehicles, particularly with higher mileage and exposure to road salt/conditions.

Ac Compressor Issues:

Some reports of AC compressor failures over time.

Cv Axle Boots:

Torn CV boots can lead to damage to the Constant Velocity joints, especially in vehicles used on rough terrain or off-road.

📚 Vehicle History

Subaru Philosophy:

Emphasis on safety, reliability, AWD, and driver engagement through unique engineering.

Outback Genesis:

Originally a trim level of the Subaru Legacy, the Outback became a distinct model in 1996, emphasizing increased ground clearance and rugged styling for light off-road capability.

Fourth Generation Debut:

The 2010 model year marked the debut of the fourth generation (chassis code BR/BM) for the Outback, moving it onto a dedicated platform separate from the Legacy sedan for the first time.

Design Changes 2010:

Increased wheelbase, wider track, more upright cabin for improved interior space, and a higher ride height compared to previous generations.

Assembly Location:

Lafayette, Indiana, USA (Subaru of Indiana Automotive, Inc. - SIA)

Production Years Fourth Gen:

2010-2014 model years.

🏆 Awards & Recognition

IIHS Award:

IIHS Top Safety Pick for 2010, reflecting strong performance in crash tests.

Consumer Reports Ratings:

Generally received good ratings for predicted reliability and owner satisfaction in its class, though some specific components may vary.

Emission Certification:

Meets EPA and CARB emissions standards for its model year.