🏷️ Basic Information

Make:

Subaru

Model:

Impreza

Year:

2009

Product Name:

Subaru Impreza 2009 Workshop Service Repair Manual PDF

👋 Introduction

Segment:

Compact car, often positioned in rally-inspired performance variants.

Key Competitors:

Honda Civic, Toyota Corolla, Mazda3, Volkswagen Golf, Ford Focus

Vehicle Selling Points:

Symmetrical All-Wheel Drive (standard on most trims), boxer engine, robust build quality, practical interior, sporty handling (especially WRX and STI variants).

Value Proposition:

Essential tool for owners and technicians to maintain, diagnose, and repair the 2009 Subaru Impreza, ensuring optimal performance and longevity. Facilitates DIY repairs and accurate professional servicing.

📋 Manual Details

Primary Coverage:

Repair and overhaul of Subaru Impreza 2009 vehicles

Assumed User Knowledge:

Fully conversant with general automobile practices

Regions Covered:

Global markets, with specifics for North American models likely emphasized due to typical manual distribution.

Type:

Workshop Service Repair Manual

Language:

English

Format:

PDF

📖 Manual Coverage

Engine Systems:

Engine mechanical, lubrication, cooling, fuel, ignition, emissions control, engine management (ECU)

Transmission Systems:

Manual transmission, automatic transmission, clutch, drivetrain (driveshafts, differentials)

Chassis Systems:

Suspension (front and rear), steering, brakes (hydraulic, ABS, EBD), wheels, tires

Electrical Systems:

Battery, charging system, starting system, lighting, instrumentation, power windows, mirrors, door locks, wipers, horn, body control modules, multiplex integrated control system

Body And Interior:

Body construction, panels, doors, hood, trunk, interior trim, seats, airbags, climate control system (HVAC)

Maintenance Procedures:

Scheduled maintenance, oil changes, filter replacements, fluid checks and changes, spark plug replacement, brake pad replacement, tire rotation

Repair Procedures:

Engine component replacement (pistons, rings, valves, bearings), cylinder head overhaul, transmission overhaul, brake system repair, suspension component replacement, steering rack replacement, electrical component diagnosis and repair

Troubleshooting:

Diagnostic charts, fault code interpretation, symptom-based troubleshooting guides

Specifications And Data:

Torque specifications, clearances, fluid capacities, electrical component specifications, diagnostic parameters

Electrical Diagnostics:

Wiring diagrams, component locations, diagnostic trouble codes (DTCs) and their meanings, troubleshooting flowcharts for electrical circuits.

Body Repair:

Body panel replacement procedures, structural repair guidelines, door mechanism adjustments, glass replacement, and underbody corrosion protection.

Climate Control Repair:

HVAC system diagnosis, refrigerant handling and charging, component replacement (compressor, condenser, evaporator, blower motor), heater core replacement, control panel troubleshooting.

Engine Rebuilding:

Detailed procedures for engine disassembly, component inspection, cleaning, measurement, and reassembly, including crankshaft, connecting rods, pistons, and cylinder head.

Depth Of Information:

Comprehensive, suitable for professional technicians and advanced DIY mechanics. Covers detailed disassembly, assembly, diagnosis, and repair procedures.

Diagnostic Tools:

References to using Subaru Select Monitor (SSM) or equivalent OBD-II scanners for advanced diagnostics and data logging.

📊 Manual Specifications

File Type:

PDF (Portable Document Format)

Searchability:

Likely text-searchable for keywords and component names.

Quality:

Dependent on original source; typically high-resolution for clarity of diagrams and text.

Binding:

N/A (Digital format)

Paper:

N/A (Digital format)

⚙️ Engine Specifications

Engine Type:

Horizontally-opposed (Boxer) 4-cylinder

Displacement Na:

2.5 Liters (2457 cc)

Engine Codes Common:

EJ25 (various sub-variants like EJ253, EJ255, EJ257 for NA, Turbo, STI respectively)

Horsepower Na:

Approx. 170 hp (NA models), 265 hp (WRX), 305 hp (STI)

Torque Na:

Approx. 170 lb-ft (NA models), 244 lb-ft (WRX), 290 lb-ft (STI)

Fuel Delivery:

Electronic Fuel Injection (EFI)

Fuel Type:

Unleaded gasoline (91 octane or higher recommended for turbo models)

ECU Type:

Engine Control Unit (ECU) with OBD-II diagnostics

Ej253:

Naturally aspirated 2.5L SOHC (used in Impreza 2.5i)

Ej255:

Turbocharged 2.5L DOHC (used in Impreza WRX)

Ej257:

Turbocharged 2.5L DOHC (used in Impreza WRX STI, higher output)

🔧 Transmission

Standard Transmission:

5-speed manual transmission

Optional Transmission:

4-speed automatic transmission (with optional Sportshift paddle shifters on some trims)

Drivetrain Layout:

Symmetrical All-Wheel Drive (AWD) standard on most trims, RWD only on certain earlier generations/specific trims globally, but AWD is characteristic of 2009 Impreza.

Manual Transmission Fluid Spec:

Subaru Extra-S Gear Oil (or equivalent API GL-5, 75W-90 viscosity)

Automatic Transmission Fluid Spec:

Subaru ATF-HP (or equivalent DEXRON III/MERCON compatible fluid, check specific manual for exact compatibility)

📐 Dimensions

Body Styles:

4-door sedan, 5-door hatchback

Wheelbase Inches:

Approx. 103.2 inches

Length Sedan Inches:

Approx. 179.9 inches

Length Hatchback Inches:

Approx. 173.4 inches

Curb Weight Lbs Approx:

3100 - 3400 lbs (depending on trim and drivetrain)

🛡️ Safety Features

NHTSA Rating Sedan 2009:

Frontal Crash: 5 Stars, Side Crash: 5 Stars, Rollover: 4 Stars

IIHS Rating 2009:

Top Safety Pick

Active Safety Systems:

Anti-lock Braking System (ABS), Electronic Brake-force Distribution (EBD), Brake Assist, Traction Control System (TCS), Vehicle Dynamics Control (VDC)

Passive Safety Features:

Driver and front passenger airbags, front side-impact airbags, side curtain airbags (all rows), active head restraints, front seatbelt pretensioners

💡 Technology Features

Infotainment System:

Base models featured a standard CD player with auxiliary input. Higher trims offered optional AM/FM/CD/MP3 stereo with subwoofer and Bluetooth connectivity (often a dealer-installed accessory or part of option packages).

Driver Assistance Features:

ABS, EBD, VDC, TCS were standard or widely available. Cruise control was common. Advanced driver-assistance systems (ADAS) like adaptive cruise control or lane keeping assist were not standard in this era.

Connectivity Options:

Auxiliary audio input jack, optional Bluetooth hands-free calling and audio streaming on higher trims or via aftermarket integration.

🔧 Maintenance

Oil Change Interval Miles:

Every 3,750 miles or 6 months (severe service) or 7,500 miles or 12 months (normal service), depending on driving conditions and oil type used. Consult manual for specifics.

Air Filter Replacement Miles:

Every 15,000 - 30,000 miles, or as needed based on conditions.

Spark Plug Replacement Miles:

Approximately 60,000 - 100,000 miles for iridium-tipped plugs.

Timing Belt Replacement Miles:

Approximately 105,000 miles or 105 months. Crucial for interference engines like the EJ series.

Engine Oil Spec:

SAE 0W-20 (synthetic) for most naturally aspirated models, SAE 5W-30 (synthetic) for WRX/STI models. Always verify with owner's manual or oil cap.

Coolant Spec:

Subaru Super Coolant (Blue) or equivalent P-HOAT ethylene glycol based coolant.

Brake Fluid Spec:

DOT 3 or DOT 4 brake fluid.

Power Steering Fluid Spec:

Subaru All-Wheel Drive Power Steering Fluid (or DEXRON III compatible)

Differential Fluid Spec Front:

API GL-5, SAE 75W-90

Differential Fluid Spec Rear:

API GL-5, SAE 75W-90 (for manual transmission AWD), specific LSD fluid for STI models (check manual).

Common Issues Engine:

Head gasket leaks (especially on earlier EJ25 engines, though less prevalent on 2009 models compared to older ones), oil consumption, turbocharger wear (on WRX/STI).

Common Issues Suspension:

Worn sway bar links, front strut mounts, and rear trailing arm bushings can lead to noise and handling degradation.

Common Issues Electrical:

Intermittent issues with power windows, door lock actuators, and sometimes alternator failure.

Common Issues Transmission:

Clutch wear (manual), torque converter issues (automatic), differential whine.

📚 Vehicle History

Subaru Heritage Points:

Founded in 1953, Subaru is known for its commitment to engineering, particularly its horizontally-opposed boxer engines and its pioneering use of Symmetrical All-Wheel Drive in passenger cars.

Impreza Generations:

The 2009 model represents the third generation (GE/GH/GR/GV) of the Subaru Impreza, which debuted for the 2008 model year. This generation introduced a more conventional hatchback design alongside the sedan, and the WRX/STI models received significant chassis and powertrain updates.

Manufacturing Location:

Mainly manufactured in Gunma, Japan.

🏆 Awards & Recognition

IIHS Award:

Insurance Institute for Highway Safety (IIHS) Top Safety Pick for 2009, indicating excellent performance in crash tests.

Consumer Reports Ratings:

Varies by model year and specific variant, but generally the Impreza is recognized for its AWD capability and performance variants. Reliability ratings often average to above average.