2020 Subaru Legacy Technical Service Bulletins

595 technical service bulletins (TSBs) are on record for the 2020 Subaru Legacy. 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.

• 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.
• 10205931Dec 29, 2021Electrical system. This bulletin outlines a new required procedure to follow when performing immobilizer-related repairs on the 2020-22 Legacy and Outback.
• 10205930Dec 29, 2021Electrical system. This bulletin provides additional diagnostics to follow when addressing a Telematics-related DTC B2A16.
• 10205929Dec 28, 2021Electrical system. This bulletin announces additional information for the Subaru STARLINK® Owner’s Manual for models equipped with Denso CP1 Gen 4 systems.
• 10205924Dec 15, 2021Electrical system, Equipment. This bulletin announces availability of new Harman audio unit amplifier units with revised internal logic designed to optimize efficiency.
• 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.
• 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.
• 10202822Oct 15, 2021Electrical system. FOTA update operation has been suspended. Until FOTA update is resumed, this bulletin has been replaced by TSB 15-261-20R revised in October 2021 and entitled “Reprogramming File Availability for Optimization of Gen 4 Denso CP1 Infotainment Systems”. Please refer to this bulletin for the latest information regarding this condition.
• 10202814Oct 13, 2021Latches, locks and linkages, Body and structure. This bulletin announces changes made to the rear doors and weatherstrips to optimize their water sealing performance.
• 10202812Oct 11, 2021Equipment, Electrical system. This bulletin provides instruction for use of a new reprogramming procedure to optimize the Denso Gen 4 Audio and Navigation system.
• 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.
• 10202804Oct 1, 2021Electrical system. This Service Information Bulletin involves DTC U0254 “Lost Communication with Remote Control Module”. The DTC will be stored in memory when performing an all systems DTC check on vehicles equipped with the Genuine Subaru accessory Remote Engine Starter (RES) p.n. H001SAN000 or H001SAN100.
• 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).
• 10201807Sep 23, 2021Fuel system. UPDATE: WRG-21 Fuel Pump Impeller Failure Safety Recall – Owner Notification. (2020 MY Legacy and Outback Turbo models).
• 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.
• 10201805Sep 20, 2021Seats, Electrical system. This bulletin announces a design change made to the outer hinge cover on the driver’s 10-way adjustable power seats.
• 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.
• 10201794Sep 8, 2021Equipment, Electrical system. This bulletin addresses isolated customer concerns regarding the pictured CP1 BASE Model Center Information Display (CID) LOWER 7-inch display screen flashing, not responding to touch inputs and / or shutting off intermittently.
• 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).
• 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.
• 10201032Aug 9, 2021Equipment. This bulletin provides a description of current changes to Service Manuals available via the Subaru Technical Information System (STIS) web site.
• 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.
• 10199962Jul 28, 2021Electrical system, Engine cooling. This bulletin announces the availability of NEW reprogramming files to correct a starting condition which may occur during ambient temperatures (10 degrees Fahrenheit and lower) or in high altitude conditions.
• 10199954Jul 22, 2021Transmission and drivetrain. Diagnostic Information for Alleged Chain Slip Condition on TR580 / TR690 Transmissions.
• 10199951Jul 19, 2021Electrical system. The following information announces reprogramming file availability and provides a software update installation procedure to optimize the new Gen 4 Denso CP1 Audio and Navigation head units.
• 10198775Jun 30, 2021Electrical system. This bulletin outlines a new required procedure to follow when performing immobilizer-related repairs on the 2020-22 Legacy and Outback
• 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).
• 10198681Jun 28, 2021Electrical system. This bulletin provides helpful tips to use when diagnosing customer concerns which may arise when operating the new-generation Denso CP1 Multimedia Navigation (AVN) & Display Audio (DA) systems.
• 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
• 10198749Jun 7, 2021Engine cooling, Equipment. This bulletin is to advise of SOA’s revised catalytic converter recycling program shipping procedure.
• 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.
• 10194847May 18, 2021Engine cooling. This bulletin outlines changes in the service procedure for scavenge pump assembly installation.
• 10194832May 13, 2021Electrical system, Equipment. This bulletin announces availability of DMS reprogramming files to address the following DTCs: B118B, B11E5, B11E6 when they appear in memory all at the same time as a group.
• 10194824May 4, 2021Electrical system. This bulletin outlines a new required procedure to follow when performing immobilizer-related repairs.
• 10194823May 3, 2021Equipment. Description of current changes to Service Manuals available via the Subaru Technical Information System (STIS) web site.
• 10191664Apr 27, 2021Electrical system, Wheels. This bulletin announces a design change made to the TPMS valve assemblies.
• 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.

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