2011 SUBARU IMPREZA WRX & WRX STI Service & Repair Manual-PDF

Regular price: $133.00
Sale price: $133.00
Regular price
Unit price: per

🏷️ Basic Information Identification Make: Subaru Model: Impreza WRX & WRX STI Model Generation: Third Generation (GE/GH/GR/GV) Production Year: 2011 Codes Chassis Codes: GR (Hatchback WRX/STI), GV (Sedan WRX/STI) Engine Codes: EJ255 (WRX), EJ257 (STI) 👋 Introduction Market Position Segment: Performance Compact Sedan/Hatchback Rally-Inspired Sedan/Hatchback Target Audience: Enthusiasts, performance drivers, rally sport followers. Competitive Analysis Competitors: Mitsubishi Lancer Evolution, Volkswagen GTI, Ford Focus ST (though typically AWD differentiates Subaru). Key Features All Wheel Drive: Subaru's Symmetrical All-Wheel Drive system is a defining characteristic of both WRX and WRX STI models. Turbocharged Engines: Powerful turbocharged Boxer engines deliver exhilarating performance. Rally Heritage: Direct lineage and technology derived from Subaru's World Rally Championship (WRC) success. Manual Value Proposition Value: Essential resource for maintaining, troubleshooting, and repairing the high-performance Impreza WRX/STI, enabling owners to keep their vehicles in peak condition. 📋 Manual Details Coverage Areas Engine: All aspects of the EJ255 (2.5L Turbocharged) and EJ257 (2.5L Turbocharged) engines, including maintenance, diagnostics, and repair. Transmission: Manual Transmissions (TY757 for WRX, TS-557 for STI), Drivetrain components. Electrical: Full electrical system coverage, including wiring diagrams, component testing, and diagnostic procedures for all modules. Chassis: Suspension (front and rear), steering system, brake system (including ABS and VDC), wheel alignment. Body: Exterior body panels, interior trim, glass, doors, hood, trunk, bumpers, and associated hardware. HVAC: Heating, ventilation, and air conditioning system diagnosis and repair. Diagnostics: OBD-II diagnostics, fault code interpretation, troubleshooting flowcharts for common and rare issues. Maintenance: Scheduled maintenance, fluid changes, filter replacements, belt inspections/replacements. Performance Tuning: Information relevant to performance aspects and potential modifications, though primarily focused on factory specifications. Page Count Estimated Pages: 1000+ Manual Type Type: Official Service and Repair Manual Language Language: English Format Format: PDF 📖 Manual Coverage Systems Covered Powertrain: Engine (EJ255/EJ257), Turbocharging system, Intercooler, Fuel Injection (SFI), Ignition System, Exhaust System, Clutch, Manual Transmission (TY757/TS-557), All-Wheel Drive System (Symmetrical AWD). Suspension Steering: Front MacPherson Struts, Rear Double Wishbone, Power Steering System (Hydraulic), Steering Column, Bushings, Springs, Dampers. Brakes: Front and Rear Disc Brakes, ABS (Anti-lock Braking System), EBD (Electronic Brake-force Distribution), Brake Master Cylinder, Calipers, Rotors, Brake Lines, Parking Brake. Electrical Electronics: ECU (Engine Control Unit), TCU (Transmission Control Unit - if applicable to specific models), Body Control Module (BCM), Instrument Cluster, Lighting System (Headlights, Taillights, Interior), Power Windows/Locks, Audio System, HVAC Controls, Cruise Control, SRS (Supplemental Restraint System - Airbags). Comfort Convenience: Climate Control, Keyless Entry, Power Mirrors, Sunroof (if equipped), Wiper/Washer System. Procedures Included Routine Maintenance: Oil and filter changes, air filter replacement, spark plug replacement, coolant flushes, brake fluid changes, differential fluid changes, transmission fluid changes. Engine Repair: Top-end overhaul (cylinder head removal/installation), bottom-end overhaul (crankshaft, connecting rods, pistons), timing belt/chain (if applicable, though these use timing chains) inspection and replacement, turbocharger removal/installation, injector servicing, fuel pump testing. Transmission Drivetrain: Clutch replacement, transmission removal/installation, differential servicing, driveshaft inspection. Suspension Steering Brakes: Shock absorber/strut replacement, ball joint replacement, tie rod end replacement, brake pad/rotor replacement, caliper servicing, bleeding brake system, wheel bearing replacement. Electrical Diagnostics: Wiring harness troubleshooting, sensor testing (e.g., MAF, O2, Knock), actuator testing, starter/alternator testing, battery testing and replacement, ECU/TCU diagnostics. Body Repair: Door panel removal, window regulator replacement, mirror replacement, bumper cover repair/replacement, panel alignment. HVAC Repair: Refrigerant recharging, compressor replacement, condenser/evaporator servicing, blower motor replacement. Troubleshooting: Detailed diagnostic flowcharts for common drivability issues, starting problems, electrical faults, and performance complaints. Technical Depth Depth: Comprehensive, covering everything from routine maintenance to complete engine and transmission overhauls, electrical system diagnostics, and body repairs. Suitable for professional technicians and advanced DIY enthusiasts. 📊 Manual Specifications File Format Type: Digital (PDF) Searchability: Typically searchable text within the PDF for quick navigation to specific topics. Printability: Printable pages for workshop use. Print Quality Resolution: High resolution, ensuring clarity of diagrams, schematics, and illustrations. Binding Type Binding: Not applicable (digital format) Paper Type Paper Type: Not applicable (digital format) ⚙️ Engine Specifications Primary Engine Wrx Engine Code: EJ255 Wrx Engine Type: 2.5-liter, DOHC, turbocharged, intercooled, horizontally opposed (Boxer) four-cylinder Wrx Displacement: 2457 cc (2.46 L) Wrx Bore X Stroke: 99.5 mm x 79.0 mm Wrx Compression Ratio: 8.4:1 Wrx Horsepower: 265 hp @ 6000 rpm Wrx Torque: 244 lb-ft @ 4000 rpm Sti Engine Code: EJ257 Sti Engine Type: 2.5-liter, DOHC, turbocharged, intercooled, horizontally opposed (Boxer) four-cylinder with stronger internals Sti Displacement: 2457 cc (2.46 L) Sti Bore X Stroke: 99.5 mm x 79.0 mm Sti Compression Ratio: 8.2:1 Sti Horsepower: 305 hp @ 6000 rpm Sti Torque: 290 lb-ft @ 4000 rpm Performance Engine Management: Subaru's Engine Control Module (ECM) with sophisticated fuel and ignition mapping. Turbocharger: IHI VF48 (WRX), IHI VF40/VF48 or similar (STI, depending on specific market/version) with dual-scroll design for improved response. Fuel System Fuel Delivery: Sequential Multi-Port Fuel Injection (MPI) Fuel Type: Premium Unleaded Gasoline (91 octane or higher recommended) Fluid Capacities Engine Oil...

28 people are viewing this right now

Type: Car

Vendor:

Sku: 324796

Collections: ALL Subaru

Availability: In stock

Tags: 2011 Car Cars IMPREZA WRX IMPREZA WRX STI Misc Subaru

Product variants

Description

🏷️ Basic Information

Identification

Make:

Subaru

Model:

Impreza WRX & WRX STI

Model Generation:

Third Generation (GE/GH/GR/GV)

Production Year:

Codes

Chassis Codes:

GR (Hatchback WRX/STI), GV (Sedan WRX/STI)

Engine Codes:

EJ255 (WRX), EJ257 (STI)

👋 Introduction

Market Position

Segment:

Performance Compact Sedan/Hatchback Rally-Inspired Sedan/Hatchback

Target Audience:

Enthusiasts, performance drivers, rally sport followers.

Competitive Analysis

Competitors:

Mitsubishi Lancer Evolution, Volkswagen GTI, Ford Focus ST (though typically AWD differentiates Subaru).

Key Features

All Wheel Drive:

Subaru's Symmetrical All-Wheel Drive system is a defining characteristic of both WRX and WRX STI models.

Turbocharged Engines:

Powerful turbocharged Boxer engines deliver exhilarating performance.

Rally Heritage:

Direct lineage and technology derived from Subaru's World Rally Championship (WRC) success.

Manual Value Proposition

Value:

Essential resource for maintaining, troubleshooting, and repairing the high-performance Impreza WRX/STI, enabling owners to keep their vehicles in peak condition.

📋 Manual Details

Coverage Areas

Engine:

All aspects of the EJ255 (2.5L Turbocharged) and EJ257 (2.5L Turbocharged) engines, including maintenance, diagnostics, and repair.

Transmission:

Manual Transmissions (TY757 for WRX, TS-557 for STI), Drivetrain components.

Electrical:

Full electrical system coverage, including wiring diagrams, component testing, and diagnostic procedures for all modules.

Chassis:

Suspension (front and rear), steering system, brake system (including ABS and VDC), wheel alignment.

Body:

Exterior body panels, interior trim, glass, doors, hood, trunk, bumpers, and associated hardware.

HVAC:

Heating, ventilation, and air conditioning system diagnosis and repair.

Diagnostics:

OBD-II diagnostics, fault code interpretation, troubleshooting flowcharts for common and rare issues.

Maintenance:

Scheduled maintenance, fluid changes, filter replacements, belt inspections/replacements.

Performance Tuning:

Information relevant to performance aspects and potential modifications, though primarily focused on factory specifications.

Page Count

Estimated Pages:

1000+

Manual Type

Type:

Official Service and Repair Manual

Language

Language:

English

Format

Format:

📖 Manual Coverage

Systems Covered

Powertrain:

Engine (EJ255/EJ257), Turbocharging system, Intercooler, Fuel Injection (SFI), Ignition System, Exhaust System, Clutch, Manual Transmission (TY757/TS-557), All-Wheel Drive System (Symmetrical AWD).

Suspension Steering:

Front MacPherson Struts, Rear Double Wishbone, Power Steering System (Hydraulic), Steering Column, Bushings, Springs, Dampers.

Brakes:

Front and Rear Disc Brakes, ABS (Anti-lock Braking System), EBD (Electronic Brake-force Distribution), Brake Master Cylinder, Calipers, Rotors, Brake Lines, Parking Brake.

Electrical Electronics:

ECU (Engine Control Unit), TCU (Transmission Control Unit - if applicable to specific models), Body Control Module (BCM), Instrument Cluster, Lighting System (Headlights, Taillights, Interior), Power Windows/Locks, Audio System, HVAC Controls, Cruise Control, SRS (Supplemental Restraint System - Airbags).

Comfort Convenience:

Climate Control, Keyless Entry, Power Mirrors, Sunroof (if equipped), Wiper/Washer System.

Procedures Included

Routine Maintenance:

Oil and filter changes, air filter replacement, spark plug replacement, coolant flushes, brake fluid changes, differential fluid changes, transmission fluid changes.

Engine Repair:

Top-end overhaul (cylinder head removal/installation), bottom-end overhaul (crankshaft, connecting rods, pistons), timing belt/chain (if applicable, though these use timing chains) inspection and replacement, turbocharger removal/installation, injector servicing, fuel pump testing.

Transmission Drivetrain:

Clutch replacement, transmission removal/installation, differential servicing, driveshaft inspection.

Suspension Steering Brakes:

Shock absorber/strut replacement, ball joint replacement, tie rod end replacement, brake pad/rotor replacement, caliper servicing, bleeding brake system, wheel bearing replacement.

Electrical Diagnostics:

Wiring harness troubleshooting, sensor testing (e.g., MAF, O2, Knock), actuator testing, starter/alternator testing, battery testing and replacement, ECU/TCU diagnostics.

Body Repair:

Door panel removal, window regulator replacement, mirror replacement, bumper cover repair/replacement, panel alignment.

HVAC Repair:

Refrigerant recharging, compressor replacement, condenser/evaporator servicing, blower motor replacement.

Troubleshooting:

Detailed diagnostic flowcharts for common drivability issues, starting problems, electrical faults, and performance complaints.

Technical Depth

Depth:

Comprehensive, covering everything from routine maintenance to complete engine and transmission overhauls, electrical system diagnostics, and body repairs. Suitable for professional technicians and advanced DIY enthusiasts.

📊 Manual Specifications

File Format

Type:

Digital (PDF)

Searchability:

Typically searchable text within the PDF for quick navigation to specific topics.

Printability:

Printable pages for workshop use.

Print Quality

Resolution:

High resolution, ensuring clarity of diagrams, schematics, and illustrations.

Binding Type

Binding:

Not applicable (digital format)

Paper Type

Paper Type:

Not applicable (digital format)

⚙️ Engine Specifications

Primary Engine

Wrx Engine Code:

EJ255

Wrx Engine Type:

2.5-liter, DOHC, turbocharged, intercooled, horizontally opposed (Boxer) four-cylinder

Wrx Displacement:

2457 cc (2.46 L)

Wrx Bore X Stroke:

99.5 mm x 79.0 mm

Wrx Compression Ratio:

8.4:1

Wrx Horsepower:

265 hp @ 6000 rpm

Wrx Torque:

244 lb-ft @ 4000 rpm

Sti Engine Code:

EJ257

Sti Engine Type:

2.5-liter, DOHC, turbocharged, intercooled, horizontally opposed (Boxer) four-cylinder with stronger internals

Sti Displacement:

2457 cc (2.46 L)

Sti Bore X Stroke:

99.5 mm x 79.0 mm

Sti Compression Ratio:

8.2:1

Sti Horsepower:

305 hp @ 6000 rpm

Sti Torque:

290 lb-ft @ 4000 rpm

Performance

Engine Management:

Subaru's Engine Control Module (ECM) with sophisticated fuel and ignition mapping.

Turbocharger:

IHI VF48 (WRX), IHI VF40/VF48 or similar (STI, depending on specific market/version) with dual-scroll design for improved response.

Fuel System

Fuel Delivery:

Sequential Multi-Port Fuel Injection (MPI)

Fuel Type:

Premium Unleaded Gasoline (91 octane or higher recommended)

Fluid Capacities

Engine Oil Capacity With Filter:

5.7 US quarts (5.4 Liters)

Fluid Specifications

Engine Oil Type:

SAE 5W-30 Synthetic (API SM or SN, ILSAC GF-4 or GF-5)

🔧 Transmission

Standard

Wrx Transmission:

5-speed manual (TY757)

Sti Transmission:

6-speed manual (TS-557)

Optional

Transmission Options:

None for 2011 WRX/STI models; manual transmission was standard.

Features

AWD System:

Subaru's Symmetrical All-Wheel Drive with Driver Controlled Center Differential (DCCD) on STI models.

Differentials:

Front Helical Limited-Slip Differential (LSD), Rear Viscous Limited-Slip Differential (LSD) for WRX. Front Helical LSD, Rear Mechanical LSD with DCCD for STI.

Fluid Specifications

Manual Transmission Fluid Type:

Subaru Extra-S GL-5 75W-90 or equivalent synthetic gear oil.

Fluid Capacities

Manual Transmission Fluid Capacity:

Approx. 2.1 US quarts (2.0 Liters) for 5-speed, 2.4 US quarts (2.3 Liters) for 6-speed.

📐 Dimensions

Exterior

Wheelbase:

103.3 inches (2624 mm)

Length:

173.8 inches (4415 mm) - Hatchback WRX/STI, 179.5 inches (4560 mm) - Sedan WRX/STI

Width:

70.7 inches (1796 mm)

Height:

57.9 inches (1471 mm) - Hatchback WRX/STI, 58.1 inches (1476 mm) - Sedan WRX/STI

Ground Clearance:

Approximately 5.0 inches (127 mm)

Wheel Bolt Pattern:

5x100

Wheel Size:

17x8.0 (WRX), 18x8.5 (STI)

Tire Size:

225/45R17 (WRX), 245/40R18 (STI)

Weights

Curb Weight:

Approx. 3241 lbs (1470 kg) WRX, Approx. 3373 lbs (1530 kg) STI

🛡️ Safety Features

Ratings

NHTSA Front Crash Test:

5-Star (for specific trims/configurations)

IIHS Moderate Overlap Front:

Good (for specific trims/configurations)

Active Features

Traction Control:

Yes, with multiple modes on STI (Vehicle Dynamics Control - VDC).

Standard Anti-lock Braking System (ABS).

Standard Electronic Brake-force Distribution (EBD).

Passive Features

Airbags:

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

Seatbelts:

3-point height-adjustable front seatbelts with pre-tensioners and load limiters, rear 3-point seatbelts.

Child Seat Anchors:

LATCH (Lower Anchors and Tethers for Children) system.

💡 Technology Features

Infotainment

Audio System:

Standard CD player with MP3 capability, auxiliary input, and potentially SiriusXM satellite radio. Higher trims might offer premium audio systems.

Navigation:

Optional factory-installed navigation system available on some trims.

Driver Assistance

Cruise Control:

Standard electronic cruise control.

Vsc Dccd:

Vehicle Dynamics Control (VDC) standard on all models; Driver Controlled Center Differential (DCCD) with manual/auto modes on STI for torque distribution adjustment.

Connectivity

Usb Aux Ports:

Auxiliary audio input jack is standard. USB port may be an option or part of an upgraded audio package.

🔧 Maintenance

Service Intervals

Oil Change Interval:

Every 3,750 miles (6,000 km) or 3.75 months, or every 7,500 miles (12,000 km) with synthetic oil and severe duty driving conditions, consult manual for specifics.

Engine Air Filter Replacement:

Inspect every 7,500 miles (12,000 km), replace as needed.

Cabin Air Filter Replacement:

Inspect every 7,500 miles (12,000 km), replace annually or as needed.

Spark Plug Replacement:

Every 30,000 miles (48,000 km) with iridium spark plugs.

Coolant Replacement:

Initial change at 30,000 miles (48,000 km), then every 30,000 miles (48,000 km) thereafter (Subaru Super Coolant).

Brake Fluid Replacement:

Every 15,000 miles (24,000 km) or 15 months.

Transmission Fluid Replacement:

Every 30,000 miles (48,000 km) for manual transmission.

Differential Fluid Replacement:

Front and Rear differentials: Every 30,000 miles (48,000 km).

Fluid Specifications

Brake Fluid Type:

DOT 3 or DOT 4.

Coolant Type:

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

Power Steering Fluid Type:

Subaru Genuine ATF-HP or Dexron III/VI compatible fluid.

Known Issues

Engine Reliability:

While generally robust, EJ25 engines, especially under high-performance use, can be susceptible to ringland failure, head gasket issues, and oil consumption if not meticulously maintained and driven appropriately. Regular oil checks are crucial.

Turbocharger Longevity:

Turbocharger health is dependent on proper warm-up and cool-down procedures. Inspecting turbo oil feed and return lines for blockages or leaks is recommended.

Clutch Wear:

Aggressive driving can lead to accelerated clutch wear, especially in performance models like the WRX/STI.

Suspension Components:

Bushings and shock absorbers may require replacement over time due to the performance nature of the vehicle.

Intercooler Hose Leaks:

Some owners have reported potential for intercooler hose leaks, which can affect boost pressure and performance.

📚 Vehicle History

Brand Heritage

Subaru Philosophy:

Long-standing reputation for All-Wheel Drive technology and engineering, originating from its aircraft manufacturing roots. Strong association with rally sport and driver engagement.

Model Evolution

Impreza Introduction:

The Impreza line was introduced in 1992 as a compact car to complement Subaru's lineup, quickly spawning performance variants like the WRX (World Rally eXperimental) in 1992 in Japan, and the STI (Subaru Tecnica International) in 1994.

Third Generation Impreza:

The third generation (GE/GH/GR/GV) marked a significant styling shift, notably introducing the hatchback body style for WRX and STI models alongside the sedan. This generation continued the tradition of turbocharged Boxer engines and Symmetrical AWD.

Production

Manufacturing Location:

Gunma Plant, Japan

Model Years Covered By Manual:

2011 Subaru Impreza WRX and WRX STI (specifically targeting this model year's configurations).

🏆 Awards & Recognition

Recognitions

Automotive Journal Ratings:

The WRX and WRX STI consistently receive high marks from automotive publications for their handling, performance, and rally-inspired driving dynamics.

Performance Car Awards:

Often cited in 'best of' lists for affordable sports sedans and rally-bred performance cars.

Ratings

Enthusiast Following:

Strong and dedicated owner community and enthusiast following.