2020 Subaru Ascent Technical Service Bulletins

530 technical service bulletins (TSBs) are on record for the 2020 Subaru Ascent. 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.

• 10208678Feb 7, 2022Suspension, Steering. Subaru Safety Recall: WRL-21 – Front Axle Housing
• 10208516Feb 7, 2022Transmission and drivetrain. Subaru Safety & Emissions Recall: WRK-21 – CVT Chain Guide Breakage
• 10207216Jan 21, 2022Transmission and drivetrain. This service bulletin provides a temporary repair procedure to address vibrations and/or judder concerns experienced on turns during acceleration.
• 10207185Jan 13, 2022Equipment, Electrical system. This bulletin announces availability of new Harman audio unit amplifier units with revised internal logic designed to optimize efficiency.
• 10207174Jan 10, 2022Equipment, Transmission and drivetrain. This 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.
• 10207167Jan 3, 2022Electrical system, Equipment. This bulletin contains illustrations of exchange components and their manufacturer as well as a description of the proper exchange procedure.
• 10207172Jan 2, 2022Equipment, Engine cooling. This Bulletin announces design changes to the engine oil and CVT fluid drain plugs.
• 10205930Dec 29, 2021Electrical system. This bulletin provides additional diagnostics to follow when addressing a Telematics-related DTC B2A16.
• 10205924Dec 15, 2021Electrical system, Equipment. This bulletin announces availability of new Harman audio unit amplifier units with revised internal logic designed to optimize efficiency.
• 10205921Dec 10, 2021Suspension, Steering. Subaru of America, Inc. (Subaru) is initiating a new safety recall for certain 2020 model year Ascent vehicles in which the tie rod end mounting holes in the front axle housings may have an incorrect taper angle.
• 10205920Dec 10, 2021Transmission and drivetrain. Subaru of America, Inc. (Subaru) is initiating a new safety and emissions recall for certain 2019 - 2020 model year Ascent vehicles, 2020 model year turbo Legacy vehicles, and 2020 model year turbo Outback vehicles in which the Continuously Variable Transmission (CVT) chain may slip and/or break.
• 10205906Dec 9, 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.
• 10205915Dec 8, 2021Electrical system. Map Data Update Procedure for Harman Gen 3.1 Navigation Equipped Head Units.
• 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.
• 10203889Nov 5, 2021Suspension. This bulletin provides an inspection procedure to follow when addressing customer concerns of a rattling, knocking or klunk type sound when going over slight bumps and / or uneven road surfaces.
• 10202841Oct 28, 2021Electrical system. This bulletin provides additional diagnostics to follow when addressing a Telematics-related DTC B2A16.
• 10202815Oct 27, 2021Electrical system, Transmission and drivetrain. This bulletin has been developed in response to a small number of customer concerns regarding fluid seepage found coming from the CVT assembly.
• 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.
• 10202806Oct 1, 2021Electrical system. Effective today (October 1, 2021), the recommended replacement battery for the 19-21 MY Ascent models is changing from the SOA821B200 Flooded Battery to the SOA821B600 Enhanced Flooded Battery (EFB).
• 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.
• 10201793Sep 8, 2021Electrical system. This bulletin provides additional information for the diagnostic procedures concerning measurement of dark current (a.k.a. standby current).
• 10201789Sep 2, 2021Equipment, Brakes. This Bulletin announces availability of new front brake pad kit established to address concerns of a squeaking sound heard when coming to a stop and / or a pulsation (judder) heard and felt during braking.
• 10201052Aug 31, 2021Electrical system, Equipment. This bulletin provides additional information for the diagnostic procedures concerning measurement of dark current (standby current).
• 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.
• 10201039Aug 18, 2021Brakes. This bulletin announces availability of new front brake pad kit established to address concerns of a squeaking sound heard when coming to a stop and / or a pulsation (judder) heard/felt during braking.
• 10201027Aug 4, 2021Seat belts, Seats. This bulletin provides a procedure to address customer concerns of a squeaking sound originating from where the front seat belt buckle assembly attaches to the seat frame.
• 10201021Aug 2, 2021Latches, locks and linkages, Equipment. This bulletin announces the service procedure for addressing possible water entry into the interior from the door(s) area.
• 10199935Jul 30, 2021Electrical system. This bulletin provides additional information for the diagnostic procedures concerning measurement of Dark Current (a.k.a. Standby Current).
• 10199932Jul 29, 2021Equipment. The purpose of this bulletin is to provide 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.
• 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
• 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.
• 10198744Jun 7, 2021Electrical system, Latches, locks and linkages. This bulletin outlines changes in the service procedure for replacement of the Power Rear Gate control module.
• 10198741Jun 1, 2021Engine cooling. This bulletin outlines changes in the service procedure for engine oil pressure inspection.

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