2020 Subaru Impreza Technical Service Bulletins

407 technical service bulletins (TSBs) are on record for the 2020 Subaru Impreza. TSBs are notes manufacturers send to dealers about repair procedures for issues seen in the field. They are not recalls and do not by themselves mean a vehicle has a fault.

• 10205913Dec 6, 2021Electrical system. The following information addresses reprogramming file availability and a software update installation procedure to provide optimization to the new Harman Gen 3.1 Audio and Navigation head units.
• 10203897Nov 10, 2021Fuel system. Subaru of America, Inc. (Subaru) is initiating a new safety recall for certain 2019-2020 MY Ascent, 2018-2019 MY BRZ, 2018 MY Forester (Turbo), 2018-2020 MY Impreza, 2018-2020 MY Legacy, 2018-2020 MY Outback, and 2018-2019 MY WRX vehicles in which the fuel pump may become inoperative.
• 10203864Nov 2, 2021Electrical system, Equipment. This bulletin provides insight in response to both customer and retailer feedback resulting from the use of OBD-II port connected devices.
• 10202841Oct 28, 2021Electrical system. This bulletin provides additional diagnostics to follow when addressing a Telematics-related DTC B2A16.
• 10202835Oct 19, 2021Fuel system. Subaru of America, Inc. (Subaru) is initiating a new safety recall for certain 2019-2020 MY Ascent, 2018-2019 MY BRZ, 2018 MY Forester (Turbo), 2018-2020 MY Impreza, 2018-2020 MY Legacy, 2018-2020 MY Outback, and 2018-2019 MY WRX vehicles in which the fuel pump may become inoperative.
• 10202829Oct 18, 2021Fuel system. WRG-21 Fuel Pump Impeller Failure Safety Recall – Owner Notification.
• 10202811Oct 8, 2021Electrical system. This bulletin announces the availability of diagnostic information regarding accessory remote engine start systems.
• 10202810Oct 7, 2021Engine cooling, Equipment. This bulletin announces an additional service procedure for timing chain and / or cam sprocket replacement on FA and FB type engines.
• 10202808Oct 4, 2021Equipment, Fuel system. WRG-21 Fuel Pump Parts Scrapping.
• 10201811Sep 24, 2021Electrical system, Fuel system. This bulletin announces design changes made to the fuel injector assembly in response to misfire DTC P030x, engine knocking, and/or DTCs P219C-D-E-F.
• 10201810Sep 24, 2021Equipment, Fuel system, Engine cooling. This bulletin provides updated parts information and a service procedure to follow for removing accumulated carbon deposits from fuel injectors and internal engine components (e.g. intake valves and / or manifold, and combustion chambers).
• 10201799Sep 23, 2021Fuel system, Equipment. Subaru of America, Inc. (Subaru) is initiating a new safety recall for certain 2019-2020 MY Ascent, 2018-2019 MY BRZ, 2018 MY Forester (Turbo), 2018-2020 MY Impreza, 2018-2020 MY Legacy, 2018-2020 MY Outback, and 2018-2019 MY WRX vehicles in which the fuel pump may become inoperative.
• 10201806Sep 22, 2021Equipment, Electrical system. This bulletin provides important information regarding diagnosis and replacement (when applicable) of the STARLINK Telematics Data Communication Module (DCM) along with a new claim submission requirement.
• 10201804Sep 20, 2021Electrical system, Equipment. The following information addresses reprogramming file availability and a software update installation procedure to provide optimization to the new Harman Gen 3.1 Audio and Navigation head units.
• 10201802Sep 20, 2021Electrical system, Equipment. This bulletin announces availability of new Harman audio unit amplifier units with revised internal logic designed to optimize efficiency while addressing customer concerns.
• 10201059Aug 30, 2021Fuel system. This bulletin provides updated parts information and a service procedure to follow for removing accumulated carbon deposits from fuel injectors and internal engine components (e.g. intake valves and / or manifold, and combustion chambers).
• 10201057Aug 25, 2021Electrical system, Engine cooling. This bulletin announces availability of new starter motors and ECM reprogramming files created to address some reports of excessive noise while cranking the engine.
• 10201029Aug 25, 2021Fuel system. Subaru of America, Inc. (Subaru) is initiating a new safety recall in which the fuel pump may become inoperative.
• 10201055Aug 24, 2021Fuel system. Subaru of America, Inc. (Subaru) is initiating a new safety recall for certain 2019-2020 MY Ascent, 2018-2019 MY BRZ, 2018 MY Forester (Turbo), 2018-2020 MY Impreza, 2018-2020 MY Legacy, 2018-2020 MY Outback, and 2018-2019 MY WRX vehicles in which the fuel pump may become inoperative.
• 10201030Aug 19, 2021Engine cooling, Electrical system. This bulletin announces the availability of ECM reprograming files to correct a possible limited power and/or hesitation during acceleration at engine speeds of 1500-3500 rpm.
• 10201035Aug 11, 2021Equipment. This bulletin provides a description of current changes to Service Manuals available via the Subaru Technical Information System (STIS) web site.
• 10199966Jul 28, 2021Electrical system. The following information addresses reprogramming file availability and a software update installation procedure to provide optimization to the new Harman Gen 3.1 Audio and Navigation head units.
• 10199964Jul 28, 2021Engine cooling, Electrical system. This bulletin announces the availability of ECM reprograming files to correct a possible lack of power and/or hesitation during acceleration at engine speeds of 1500-3500 rpm.
• 10199954Jul 22, 2021Transmission and drivetrain. Diagnostic Information for Alleged Chain Slip Condition on TR580 / TR690 Transmissions.
• 10198768Jun 28, 2021Engine cooling. This bulletin provides updated parts information and a service procedure to follow for removing accumulated carbon deposits from fuel injectors and internal engine components (e.g. intake valves and / or manifold, and combustion chambers).
• 10198765Jun 23, 2021Transmission and drivetrain. This bulletin provides corrected diagnostics containing a revised flow for certain CVT solenoid related DTCs.
• 10198758Jun 17, 2021Equipment, Electrical system. This bulletin contains additional information for recommended materials listed in the Service Manuals for individual models
• 10198755Jun 9, 2021Engine cooling, Air bags, Electrical system, Equipment. Subaru Service and technical support line newletter QMR of the Month.
• 10198774Jun 8, 2021Electrical system. The following information addresses reprogramming file availability and a software update installation procedure to provide optimization to the new Harman Gen 3.1 Audio and Navigation head units utilized in the models as listed.
• 10198749Jun 7, 2021Engine cooling, Equipment. This bulletin is to advise of SOA’s revised catalytic converter recycling program shipping procedure.
• 10198748Jun 7, 2021Equipment. Coverage for this Continental tire recall is now expired.
• 10198747Jun 7, 2021Equipment. Continental Tire the Americas, LLC (CTA) has issued a safety recall for multiple tire lines, within the filing of NHTSA safety recall ID 21T-001.
• 10198741Jun 1, 2021Engine cooling. This bulletin outlines changes in the service procedure for engine oil pressure inspection.
• 10194830May 21, 2021Engine cooling. This bulletin provides updated parts information and a service procedure to follow for removing accumulated carbon deposits from fuel injectors and internal engine components.
• 10194838May 12, 2021Equipment. Description of current changes to Service Manuals available via the Subaru Technical Information System (STIS) web site.
• 10191666Apr 30, 2021Body and structure. This bulletin announces design changes made to the front and rear door glass run channels.
• 10191664Apr 27, 2021Electrical system, Wheels. This bulletin announces a design change made to the TPMS valve assemblies.
• 10191576Apr 23, 2021Tires. Continental Tire the Americas, LLC (CTA) has issued a safety recall for multiple tire lines, within the filing of NHTSA safety recall ID 21T-001. This additional CTA recall includes 93,959 potentially defective tires sold as original equipment (OE) tires and replacement tires, for various vehicle makes and models.
• 10191591Apr 21, 2021Electrical system. This bulletin provides additional procedures and a detailed flow chart to use when diagnosing customer concerns regarding operation of the STARLINK RES feature.
• 10191586Apr 9, 2021Equipment. This bulletin announces availability of new audio unit amplifier units with revised internal logic designed to optimize efficiency.
• 10191578Apr 5, 2021Tires. Please be advised that Continental Tire the Americas, LLC (CTA) has issued a safety recall for multiple tire lines, within the filing of NHTSA safety recall ID 21T-001.
• 10189674Mar 26, 2021Electrical system. In January 2021, the replacement battery application for all Ascent and 2017- 2021 Impreza models were changed from part number SOA821B200 to part number SOA821B600.
• 10189672Mar 16, 2021Suspension. This bulletin provides a service procedure to address a squeaking-type sound from the rear suspension area customers may hear when going over bumps.
• 10188160Feb 23, 2021Equipment, Transmission and drivetrain. This Service Information Bulletin provides updated diagnostic procedures to follow and a brief questionnaire to complete when diagnosing an alleged Chain Slip condition on the TR580 and TR690 model CVT transmissions.
• 10188191Feb 22, 2021Electrical system. SOA821B600 Battery Supersession
• 10188190Feb 19, 2021Equipment, Body and structure. This bulletin announces availability of new center console armrest covers to address the a wrinkling condition.
• 10188185Feb 17, 2021Equipment, Electrical system. This bulletin announces a change made to the MFD software to keep the affected units listed below compliant with Apple® CarPlay® certification.
• 10188183Feb 17, 2021Engine, Equipment. This bulletin announces the upcoming issuance to all retailers of an essential tool update kit for the Engine Support Assembly Kit #J-50135-A.
• 10188175Feb 15, 2021Equipment, Suspension. This bulletin announces a design change made to the front strut dust cover to address a rubbing-type sound.
• 10188173Feb 12, 2021Equipment, Electrical system. This bulletin provides helpful information about operating conditions observed in the field for Technicians to use when diagnosing customer concerns which may arise while operating Harman Gen 3 Navigation and Display Audio systems.

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