Subaru Impreza WRX 2011 Workshop Service Repair Manual

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🏷️ Basic Information Identification Make: Subaru Model: Impreza WRX Year: 2011 Codes Chassis Code: GRF/GVF (Narrowbody & Widebody) Engine Code: EJ257 👋 Introduction Market Position Segment: Performance Compact/Sport Sedan/Hatchback Target...

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类型: Car

斯库: 449440

标签: 2011 Car Cars Impreza WRX Misc Subaru

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Description

🏷️ Basic Information

Identification

Make:

Subaru

Model:

Impreza WRX

Year:

Codes

Chassis Code:

GRF/GVF (Narrowbody & Widebody)

Engine Code:

EJ257

👋 Introduction

Market Position

Segment:

Performance Compact/Sport Sedan/Hatchback

Target Audience:

Enthusiasts, performance drivers, tuners, professional mechanics

Competitive Analysis

Key Competitors:

Mitsubishi Lancer Evolution, Volkswagen GTI, Ford Focus RS (region dependent)

Key Features

Performance Focus:

Symmetrical All-Wheel Drive, turbocharged boxer engine, sporty handling

Manual Utility:

Provides in-depth technical guidance for maintenance and repair of a high-performance vehicle

📋 Manual Details

Coverage Areas

Primary Coverage:

Mechanical, Electrical, Body, Diagnostics, Troubleshooting

Secondary Coverage:

Scheduled Maintenance, Specifications, Wiring Diagrams

Page Count

Estimated Pages:

2500+

Manual Type

Type:

Workshop Service Repair Manual

Language

Language:

English

Format

Format:

📖 Manual Coverage

Systems Covered

Engine:

2.5L Turbocharged EJ257 (incl. assembly, disassembly, timing, cooling, lubrication)

Transmission:

6-Speed Manual (TY856WB1CA) - repair, overhaul, clutch system

Drivetrain:

All-Wheel Drive (Symmetrical AWD), differentials (front, rear, center), driveshafts, CV joints

Suspension:

Front struts (inverted), rear multi-link, bushings, alignment specifications

Brakes:

Front: 4-piston Brembo, Rear: 2-piston Brembo, ABS, EBD, brake fluid specifications

Steering:

Power assisted rack and pinion, steering column, alignment

Electrical:

Battery, charging system, ignition system, starter, lighting, audio, power windows/locks, fuses, relays, wiring diagrams

HVAC:

Air conditioning system, heater, climate control

Bodywork:

Body panels, doors, hood, trunk, interior trim, glass, bumpers, chassis structure

Diagnostics:

OBD-II (On-Board Diagnostics), fault codes (DTCs), sensor testing, ECU diagnostics

Procedures Included

Maintenance:

Oil changes, filter replacements, spark plug replacement, fluid checks and changes, belt inspections

Repair:

Engine overhaul, turbocharger replacement, transmission rebuild, suspension component replacement, brake caliper overhaul, electrical component repair

Troubleshooting:

Step-by-step diagnostic procedures for common and uncommon issues, symptoms analysis

Installation:

Component installation and removal procedures (e.g., turbo, injectors, suspension parts)

Specifications:

Torque specifications, clearance measurements, alignment angles, fluid capacities

Technical Depth

Depth:

Comprehensive, suitable for professional technicians and advanced DIY enthusiasts

Detail Level:

Detailed step-by-step instructions with illustrations/diagrams (assumed from typical workshop manuals)

📊 Manual Specifications

File Format

File Type:

Searchability:

Likely text-searchable (standard for professional PDFs)

Print Quality:

High resolution, suitable for printing individual pages or sections

Binding Type

Binding:

N/A (Digital PDF)

Paper Type

Paper:

N/A (Digital PDF)

⚙️ Engine Specifications

Primary Engine

Engine Type:

Horizontally Opposed (Boxer) 4-Cylinder, turbocharged and intercooled

Displacement:

2.5 Liters (2457 cc)

Bore X Stroke:

99.5 mm x 80.0 mm

Compression Ratio:

8.2:1

Valve Train:

DOHC (Dual Overhead Camshafts), 4 valves per cylinder, Subaru 'Variable Valve Lift and Timing' (VVL-i) on exhaust side

Fuel Delivery:

Multi-point Fuel Injection (MPI) with Top Feed Injectors

Ignition System:

Coil-on-plug, Distributorless Ignition System (DIS)

Performance

Horsepower:

305 hp @ 6000 rpm

Torque:

290 lb-ft (393 Nm) @ 4000 rpm

Turbocharger:

Twin-scroll turbocharger (e.g., IHI VF48 or similar, depending on market)

Fuel System

Fuel Type:

Premium Unleaded Gasoline (91 octane or higher recommended)

🔧 Transmission

Standard

Type:

6-Speed Manual (TY856WB1CA)

Drivetrain:

Symmetrical All-Wheel Drive with viscous coupling center differential and Torsen rear differential

Optional

Type:

N/A (WRX models typically only offered manual)

Features

Clutch Type:

Hydraulically operated, single dry plate

📐 Dimensions

Exterior

Length:

179.3 in (4555 mm)

Width:

70.1 in (1780 mm)

Height:

58.1 in (1475 mm)

Wheelbase:

103.1 in (2619 mm)

Weights

Curb Weight:

Approx. 3350-3450 lbs (1520-1565 kg)

🛡️ Safety Features

Ratings

IIHS Front Crash Rating:

Good (for 2011 model year chassis generation)

NHTSA Overall Rating:

4 Stars (for 2011 model year chassis generation)

Active Features

Traction Control:

Yes (Subaru VDC - Vehicle Dynamics Control)

Stability Control:

Yes (Subaru VDC - Vehicle Dynamics Control)

Yes (Anti-lock Braking System)

Yes (Electronic Brake-force Distribution)

Passive Features

Airbags:

Front airbags, front side-impact airbags, front and rear side-curtain airbags

Seatbelts:

3-point height-adjustable front seatbelts with pretensioners and load limiters, rear 3-point seatbelts

💡 Technology Features

Infotainment

Head Unit:

Standard factory AM/FM/CD/MP3 audio system with auxiliary input. Optional navigation system available.

Speakers:

Typically 6-speaker system.

Driver Assistance

Cruise Control:

Standard

Hill Start Assist:

Not typically equipped on this model year WRX.

Connectivity

Bluetooth:

Available on some trim levels/optional upgrades, but not standard across all 2011 WRX models.

🔧 Maintenance

Service Intervals

Oil Change Interval:

Typically 3,750 miles or 6 months (severe duty) or 7,500 miles or 12 months (normal duty) - refer to manual for specifics

Engine Air Filter:

Inspect every 15,000 miles, replace as needed (more frequently in dusty conditions)

Cabin Air Filter:

Replace every 15,000 miles or 12 months

Spark Plugs:

Replace at 60,000 miles (Iridium type recommended)

Timing Belt:

Not applicable; uses a timing chain (check manual for inspection intervals if applicable, typically lifetime but requires inspection)

Fluid Specifications

Engine Oil:

SAE 5W-30 Synthetic (API SN or ILSAC GF-5 compliant), Capacity: 5.8 US quarts (5.5 liters) with filter change

Coolant:

Subaru Super Coolant (Blue) or equivalent, 50/50 mix with distilled water. Capacity: Approx. 7.0 US quarts (6.6 liters)

Transmission Fluid:

Subaru Genuine Gear Oil API GL-5, SAE 75W-90. Capacity: Approx. 3.4 US quarts (3.2 liters)

Differential Fluid Front:

Subaru Genuine Gear Oil API GL-5, SAE 75W-90. Capacity: Approx. 1.1 US quarts (1.0 liters)

Differential Fluid Rear:

Subaru Genuine Gear Oil API GL-5, SAE 75W-90. Capacity: Approx. 1.5 US quarts (1.4 liters)

Brake Fluid:

DOT 3 or DOT 4 (refer to manual for precise specification).

Known Issues

Headgaskets:

While the EJ257 in this generation is generally robust, earlier EJ series engines were known for head gasket failures. Later models like this are improved, but regular inspection and correct coolant are key.

Clutch Wear:

High-performance driving can lead to accelerated clutch wear. Manual indicates inspection and replacement procedures.

Oil Consumption:

Some EJ257 engines may exhibit higher oil consumption than other engines. Regular oil level checks are critical. Manual provides diagnostic steps for excessive consumption.

Suspension Bushings:

Performance-oriented suspension can lead to wear in bushings over time, affecting handling. Manual details replacement and alignment.

📚 Vehicle History

Brand Heritage

Heritage:

Subaru is known for its Symmetrical All-Wheel Drive system and horizontally opposed boxer engines, often associated with rally racing and durable vehicles.

Model Evolution

Generation:

Third Generation (GE/GH/GR/GV) - this model year falls within the later part of this generation, representing a significant update and performance focus for the WRX.

Production

Manufacturing Location:

Ota, Gunma, Japan

Production Years For This Generation:

2008-2014

🏆 Awards & Recognition

Recognitions

Performance Reputation:

Consistently lauded for its performance-driving dynamics, AWD system, and rally-inspired heritage.