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Service bulletins for the 2020 Subaru Legacy

A bulletin is a manufacturer's communication to its dealers, as NHTSA indexes it. The summary is NHTSA's. The document is the manufacturer's: read it at NHTSA. A bulletin is not a recall, and listing a model year does not mean every vehicle of it is concerned.

595 on file from NHTSA, as of 2026-10-19.

By type

By component

By trouble code

Only bulletins with component: Electrical system are shown. Show all

Bulletins, newest first
15-240-19R2022-01-04. Service bulletin. ELECTRICAL SYSTEM; EQUIPMENT:ELECTRICAL:RADIO/TAPE DECK/CD ETC.. This bulletin announces availability of new Harman audio unit amplifier units with revised internal logic designed to optimize efficiency.
15-257-19R2021-12-03. Service bulletin. ELECTRICAL SYSTEM; EQUIPMENT. This bulletin provides insight in response to both customer and retailer feedback resulting from the use of OBD-II port connected devices.
15-251-19R2021-11-02. Service bulletin. ELECTRICAL SYSTEM. This bulletin provides additional diagnostics to follow when addressing a Telematics-related DTC B2A16.
15-270-20R2021-11-02. Service bulletin. ELECTRICAL 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 Until FOTA update is resumed, this bulletin has been replaced by TSB 15-261-20R revised in October 2021 and entitled “Reprogramming File Availability for Optimization of Gen 4 Denso CP1 Infotainment Systems”.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.
15-270-20R2021-11-02. Service bulletin. ELECTRICAL SYSTEM; EQUIPMENT. This bulletin provides instruction for use of a new reprogramming procedure to optimize the Denso Gen 4 Audio and Navigation system.
15-287-212021-11-02. Service bulletin. ELECTRICAL SYSTEM. This bulletin announces the availability of diagnostic information regarding accessory remote engine start systems.
15-258-19R2021-11-02. Service bulletin. ELECTRICAL 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.
15-195-16R2021-10-04. Service bulletin. EQUIPMENT; 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.
12-299-20R2021-10-04. Service bulletin. SEATS; ELECTRICAL SYSTEM. This bulletin announces a design change made to the outer hinge cover on the driver’s 10-way adjustable power seats.
15-240-19R2021-10-04. Service bulletin. ELECTRICAL 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.
15-273-202021-10-04. Service bulletin. ELECTRICAL SYSTEM; EQUIPMENT. 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.
09-76-212021-08-05. Service bulletin. ENGINE AND ENGINE COOLING; ELECTRICAL SYSTEM. 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.
15-261-20R2021-08-04. Service bulletin. ELECTRICAL 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.
15-246-19R2021-07-03. Service bulletin. ELECTRICAL SYSTEM. This bulletin outlines a new required procedure to follow when performing immobilizer-related repairs on the 2020-22 Legacy and Outback
01-167-08R2021-07-03. Service bulletin. ELECTRICAL SYSTEM; EQUIPMENT. This bulletin contains additional information for recommended materials listed in the Service Manuals for individual models
15-259-20R2021-07-03. Service bulletin. ELECTRICAL 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.
07-176-20R2021-06-02. Service bulletin. ELECTRICAL 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.
15-246-19R2021-06-02. Service bulletin. ELECTRICAL SYSTEM. This bulletin outlines a new required procedure to follow when performing immobilizer-related repairs.
05-85-21R2021-05-05. Service bulletin. ELECTRICAL SYSTEM; WHEELS. This bulletin announces a design change made to the TPMS valve assemblies.
15-282-21R2021-05-04. Service bulletin. ELECTRICAL SYSTEM. This bulletin provides additional procedures and a detailed flow chart to use when diagnosing customer concerns regarding operation of the STARLINK RES feature.
WRI-20R2021-05-04. Service bulletin. ELECTRICAL SYSTEM. In the interest of customer satisfaction, Subaru of America, Inc. (Subaru) is initiating a Service Program for certain 2020-2021 model year Legacy and Outback vehicles to update the Cockpit Control Module (CCM) software to the latest version.
15-259-20R2021-04-02. Service bulletin. ELECTRICAL 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.
11-200-20R2021-03-05. Service bulletin. ELECTRICAL SYSTEM; ENGINE AND ENGINE COOLING. This bulletin announces the availability of reprogramming files to optimize the Engine Control Module (ECM).
15-277-212021-03-04. Service bulletin. EQUIPMENT; EQUIPMENT:RECREATIONAL VEHICLE/TRAILER:120/240 VAC ELECTRICAL SYSTEM:GFCI/AFCI; ELECTRICAL SYSTEM. This bulletin provides the procedure which must be followed to properly register the Map Update Request Code assigned to the exchange CCU with the Subaru Map Update web portal.
07-184-20R2021-03-04. Service bulletin. ELECTRICAL SYSTEM; EQUIPMENT; VISIBILITY:POWER WINDOW DEVICES AND CONTROLS. This bulletin announces a design change made to the power window main switches.

The summaries are NHTSA's. Each bulletin's page links NHTSA's copy of the manufacturer's document.