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
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
An inflator rupture may result in metal fragments striking the vehicle occupants resulting in seriou
Subaru will notify their owners. General Motors will notify Saab owners. Dealers will replace the
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
If the air injection pump overheats, it may melt and increase the risk of a fire.
Subaru will notify owners, and dealers will replace the secondary air injection pump relay, free of
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
The engine turning off unexpectedly can increase the risk of a crash. If a crash occurs under this
Subaru will notify owners, and dealers will inspect the ignition switch, replacing the ignition swit
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
An inflator rupture may result in metal fragments striking the vehicle occupants resulting in seriou
Subaru will notify owners, and dealers will replace the front passenger air bag inflator, free of ch
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
An inflator explosion may result in sharp metal fragments striking the driver or other occupants res
Subaru will notify their owners. General Motors will notify Saab owners. Dealers will replace the
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
An inflator explosion may result in sharp metal fragments striking the driver or other occupants res
Subaru will notify their owners. General Motors will notify Saab owners. Dealers will replace the
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
An inflator explosion may result in sharp metal fragments striking the driver or other occupants res
Subaru will notify their owners. General Motors will notify Saab owners. Dealers will replace the
This bulletin contains additional information for recommended materials listed in the Service Manuals for individual models.
This announcement provides information on the remanufactured CVT transmission program.
This bulletin announces the service manual correction regarding clutch master cylinder reservoir service procedures.
This bulletin contains additional information for recommended materials listed in the Service Manuals for individual models.
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.
This Service Information Bulletin was developed to provide interim guidance for vehicles exhibiting DTC B2A20.
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
This announcement provides information on the use of aftermarket services or tools for programming immobilizer keys/fobs.
Showing the 8 most recent of 182 technical service bulletins on file with NHTSA.
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
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
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
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
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.
