2010 Subaru Impreza Service and Repair Manual

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Factory-Grade Data

2010 Subaru Impreza service and repair manual — a detailed, factory-style reference for maintenance, diagnostics, and repair. Use it to confirm correct procedures, specifications, and system coverage before you start work.

Designed for technicians and DIY owners, this manual helps you diagnose issues correctly, follow proven repair steps, and use wiring diagrams and system sections to track faults faster.

What’s included

  • Step-by-step repair procedures and service information
  • Specifications and reference data (where provided)
  • Electrical diagnostics with wiring diagrams
  • Coverage across major systems: engine, transmission/driveline, brakes, steering, suspension, HVAC, and more

Trims covered

  • 2.5i Sedan 4-Door
  • 2.5i Premium Sedan 4-Door
  • WRX Sedan 4-Door
  • 2.5 GT Sedan 4-Door
  • WRX Hatchback 4-Door
  • WRX STI Special Edition Hatchback 4-Door
  • WRX Premium Sedan 4-Door
  • 2.5i Limited Hatchback 4-Door
  • 2.5 GT Hatchback 4-Door
  • R Hatchback 4-Door
  • WRX Limited Sedan 4-Door
  • R Sedan 4-Door
  • WRX GT Sedan 4-Door
  • WRX Premium Hatchback 4-Door
  • WRX SE Sedan 4-Door
  • 2.5i Hatchback 4-Door
  • Outback Sport Hatchback 4-Door
  • WRX STI Hatchback 4-Door
  • 2.5i Limited Sedan 4-Door
  • Sport Hatchback 4-Door
  • 2.5i Premium Hatchback 4-Door
  • WRX Limited Hatchback 4-Door

Engines covered

  • 2.5L 2458CC H4 GAS SOHC Naturally Aspirated
  • 2.5L 2458CC H4 GAS DOHC Turbocharged
  • 2.0L 1994CC 122Cu. In. H4 GAS DOHC Naturally Aspirated

Index / Table of contents

  • Body
  • Brakes
  • Chassis Electrical
  • Driveline
  • Engine Cooling
  • Engine Electrical
  • Engine Mechanical
  • Engine Performance & Emission Controls
  • Fuel System
  • General Information & Identification
  • Heating, Ventilation, & Air Conditioning
  • Hybrid & Electric Vehicle Systems
  • Steering
  • Suspension
  • Transmission, Clutch, & Transfer Case
  • Wiring Diagrams

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Vehicle Safety Data

2010 Subaru Impreza Recalls & Complaints

NHTSA #16V35800025/05/2016Component: AIR BAGS:FRONTAL:PASSENGER SIDE:INFLATOR MODULE

Subaru of America, Inc. (Subaru) is recalling certain model year 2003-2004 Legacy, Outback, 2009-2011 Legacy, Outback, Forester, 2006-2011 Impreza, Tribeca, 2003-2006 Baja, and 2006 Saab 9-2x vehicles

Consequence

An inflator rupture may result in metal fragments striking the vehicle occupants resulting in seriou

Remedy

Subaru will notify their owners. General Motors will notify Saab owners. Dealers will replace the

NHTSA #16V73800013/10/2016Component: ELECTRICAL SYSTEM

Subaru of America, Inc. (Subaru) is recalling certain model year 2007-2009 model year Legacy and Outback vehicles, 2008-2014 Impreza vehicles and 2009-2013 Forester vehicles, all equipped with turbo-c

Consequence

If the air injection pump overheats, it may melt and increase the risk of a fire.

Remedy

Subaru will notify owners, and dealers will replace the secondary air injection pump relay, free of

NHTSA #19V29700011/04/2019Component: ELECTRICAL SYSTEM:IGNITION:SWITCH

Subaru of America, Inc. (Subaru) is recalling certain 2009-2013 Forester vehicles, 2008-2011 Impreza vehicles, 2008-2014 WRX vehicles, 2005-2014 Legacy vehicles, 2005-2014 Outback vehicles and 2006-20

Consequence

The engine turning off unexpectedly can increase the risk of a crash. If a crash occurs under this

Remedy

Subaru will notify owners, and dealers will inspect the ignition switch, replacing the ignition swit

NHTSA #17V01400010/01/2017Component: AIR BAGS:FRONTAL:PASSENGER SIDE:INFLATOR MODULE

Subaru of America, Inc. (Subaru) is recalling certain 2005-2006 Subaru Baja, 2006-2011 Impreza (including WRX and STI models), 2006-2012 Tribeca, 2009-2012 Forester, Legacy, Outback, and 2012 WRX vehi

Consequence

An inflator rupture may result in metal fragments striking the vehicle occupants resulting in seriou

Remedy

Subaru will notify owners, and dealers will replace the front passenger air bag inflator, free of ch

NHTSA #20V00200002/01/2020Component: AIR BAGS:FRONTAL:PASSENGER SIDE:INFLATOR MODULE

Subaru of America, Inc. (Subaru) is recalling certain 2009-2013 Forester, 2003-2006 Baja, 2004-2011 Impreza, 2004-2014 WRX (including STI), 2003-2014 Legacy and Outback, and 2006 Saab 9-2X vehicles or

Consequence

An inflator explosion may result in sharp metal fragments striking the driver or other occupants res

Remedy

Subaru will notify their owners. General Motors will notify Saab owners. Dealers will replace the

NHTSA #20V00100002/01/2020Component: AIR BAGS:FRONTAL:PASSENGER SIDE:INFLATOR MODULE

Subaru of America, Inc. (Subaru) is recalling certain 2009-2013 Forester, 2003-2006 Baja, 2004-2011 Impreza, 2004-2014 WRX (STI included), 2003-2014 Legacy and Outback, and 2005-2006 Saab 9-2X vehicle

Consequence

An inflator explosion may result in sharp metal fragments striking the driver or other occupants res

Remedy

Subaru will notify their owners. General Motors will notify Saab owners. Dealers will replace the

NHTSA #20V00300002/01/2020Component: AIR BAGS:FRONTAL:PASSENGER SIDE:INFLATOR MODULE

Subaru of America, Inc. (Subaru) is recalling certain 2009-2013 Forester, 2003-2006 Baja, 2004-2011 Impreza, 2004-2014 WRX (including STI), 2003-2014 Legacy and Outback, and 2005-2006 Saab 9-2X vehicl

Consequence

An inflator explosion may result in sharp metal fragments striking the driver or other occupants res

Remedy

Subaru will notify their owners. General Motors will notify Saab owners. Dealers will replace the

TSB #11032040

This bulletin announces the service manual correction regarding clutch master cylinder reservoir service procedures.

TSB #11032039

This bulletin contains additional information for recommended materials listed in the Service Manuals for individual models.

TSB #11032035

This Bulletin provides the diagnostic procedures to be followed when addressing customer concerns of steering wheel/vehicle body vibration when driving at highway speeds when tire/wheel balance is suspected.

TSB #11032034

This Service Information Bulletin was developed to provide interim guidance for vehicles exhibiting DTC B2A20.

TSB #11030567

This bulletin contains information to help when attempting to complete the STARLINK Telematics subscription process, an Error Code 202 and / or 204 may occur preventing the process from completing successfully

TSB #11030561

This announcement provides information on the use of aftermarket services or tools for programming immobilizer keys/fobs.

TSB #11030560

This bulletin announces the new procedure and Warranty Fail Code for FirstTime air conditioning (A/C) performance concerns possibly resulting from an undetected A/C refrigerant leak.

TSB #11030557

This bulletin contains additional information for recommended materials listed in the Service Manuals for individual models.

Showing the 8 most recent of 218 technical service bulletins on file with NHTSA.

20140318Component: VEHICLE SPEED CONTROLCrash reported1 injured

TL* THE CONTACT OWNS A 2010 SUBARU IMPREZA. THE CONTACT STATED THAT WHILE DRIVING APPROXIMATELY 40 MPH, A LOUD EXPLOSION WAS HEARD FROM THE REAR PASSENGER'S SIDE OF THE VEHICLE. THE VEHICLE THEN SUDDE

20131025Component: AIR BAGSCrash reported

I WAS GOING ON 60 AND CRASHED ON MEDIAN BY FRONT PART, AND FLIPPED OVER BY SIDE FROM REACTION OF CRASH. I WEIGHT 115 POUND AND 5'4''. I BROKE MY BONE EVEN THOUGH I WAS WEARING SEAT BELT. I HAD TO BE

20120313Component: SERVICE BRAKES, HYDRAULICCrash reported

SUBARU HAS AN INHERENT BRAKE DEFECT IN THEIR 2010-2011 SUBARU WRX AND WRX STI MODEL CARS. THE BRAKE SENSOR IN NEW CARS IS FAULTY CAUSING SYSTEM FAILURE WITH REGARDS TO ANTI-LOCK BRAKES. WHEN BRAKES

20220803Component: ENGINEFire reported

The contact owned a 2010 Subaru Impreza. The contact stated while her son was driving approximately 60 MPH, he stated that he heard a loud bang from the engine compartment and saw smoke coming from un

20230817Component: ELECTRICAL SYSTEM

The contact owns a 2010 Subaru Impreza. The contact stated while attempting to start the vehicle, the vehicle would not start. The contact was able to jumpstart the vehicle and the vehicle was able to

Showing the 5 most serious of 61 complaints filed with NHTSA.

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