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Service bulletins for the 2021 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.

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

By type

By component

By trouble code

Bulletins, newest first
SubaruNet Announcement2025-08-04. Other. ELECTRICAL SYSTEM. This OTA is released to address Telematic functions that may stop working after a certain amount of time from the vehicle's production.
10-105-25R2025-08-04. Service bulletin. ELECTRICAL SYSTEM. "This bulletin announces the new procedure and Warranty Fail Code for FirstTime air conditioning (A/C) performance concerns possibly resulting from an undetected A/C refrigerant leak. To improve Fixed Right First-Time (FRFT) and customer satisfaction, SOA is introducing a new procedure and fail code for first-time suspected A/C refrigerant leaks for cases when a Technician is unable to find the source of the leak or believes there was a potential factory under charge of the A/C system refrigerant."
SubaruNet Announcement (W2025-08-04. Other. SEATS; AIR BAGS; ELECTRICAL SYSTEM. This announcement is to inform subscribed customers of a software update for in-vehicle multimedia system.
15-246-19R2025-08-04. Service bulletin. ENGINE; ELECTRICAL SYSTEM. This Bulletin outlines a new required procedure to follow when performing immobilizer-related repairs.
SubaruNet Annoucement2025-07-01. Other. UNKNOWN OR OTHER. This announcment provides information on the release of the latest software updates to the Subaru Midtronics DSS-5000 Battery Diagnostic tool.
15-246-19R2025-07-01. Service bulletin. ELECTRICAL SYSTEM; ENGINE. This Service Information Bulletin outlines a new required procedure to follow when performing immobilizer-related repairs on the models listed.
12-248-23R2025-07-01. Service bulletin. UNKNOWN OR OTHER. This Bulletin announces the repair procedure developed to address rattle-type sounds heard from the left and/or right B-Pillar area.
SubaruNet Announcement (S2025-07-01. Other. UNKNOWN OR OTHER. This announcement is to bring attention to the OTA for In-vehicle service appointment scheduler and In-vehicle message center.
10-105-25R2025-07-01. Service bulletin. ELECTRICAL SYSTEM. This Service Information bulletin announces the new procedure and Warranty Fail Code for FirstTime air conditioning (A/C) performance concerns possibly resulting from an undetected A/C refrigerant leak.
15-251-19R2025-07-01. Service bulletin. ELECTRICAL SYSTEM. This Bulletin provides additional diagnostics to follow when addressing a Telematics-related DTC B2A16.
WRA-24R2025-07-01. Service bulletin. ELECTRICAL SYSTEM; SEATS; AIR BAGS. Subaru of America, Inc. (Subaru) has initiated a safety recall for certain 2020-2022 model year Legacy and Outback vehicles to replace all (four) of the Occupant Detection System (ODS) sensors on the front passenger seat.
02-193-24R2025-06-03. Service bulletin. FUEL/PROPULSION SYSTEM; ENGINE. 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).
15-322-25R2025-06-03. Service bulletin. ELECTRICAL SYSTEM. In the interest of customer satisfaction, Subaru of America, Inc. (SOA) is extending the New Car Limited Warranty coverage for the CP1 & Gen 3.1 Head Unit used in the listed models and model years to (8) eight years / 150,000 miles to cover certain qualifying repairs to the infotainment audio system.
01-168-09R2025-06-03. Service bulletin. UNKNOWN OR OTHER. The purpose of this bulletin is to provide replacement key and immobilizer information along with an overview of the Subaru Lock Information web-site.
12-266-252025-06-03. Service bulletin. VISIBILITY/WIPER. This bulletin announces the design change made to the Washer Tank.
10-105-25R2025-06-03. Service bulletin. ELECTRICAL SYSTEM. This bulletin announces the new procedure and Warranty Fail Code for FirstTime air conditioning (A/C) performance concerns possibly resulting from an undetected A/C refrigerant leak. To improve Fixed Right First-Time (FRFT) and customer satisfaction, SOA is introducing a new procedure and fail code for first-time suspected A/C refrigerant leaks for cases when a Technician is unable to find the source of the leak or believes there was a potential factory under charge of the A/C system refrigerant.
15-251-19R2025-05-02. Service bulletin. ELECTRICAL SYSTEM. This Service Bulletin provides additional diagnostics to follow when addressing a Telematics-related DTC B2A16.
07-189-21R2025-05-02. Service bulletin. ELECTRICAL SYSTEM; STRUCTURE:BODY. This bulletin announces availability of new door window regulator assemblies and door glass run channel seals in response to limited concerns of erratic operation of the anti-entrapment feature and / or the door glass either not closing or closing very slowly.
12-267-252025-05-01. Service bulletin. STRUCTURE:BODY. This bulletin announces a design change to the hood lock switch portion of the hood lock assembly.
02-192-24R2025-05-01. Service bulletin. ENGINE. This Bulletin announces the diagnostic procedures to be followed when diagnosing engine oil leakage on FA and FB type engines.
02-193-24R2025-05-01. Service bulletin. ENGINE; FUEL/PROPULSION 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).
09-115-24R2025-05-01. Service bulletin. ENGINE; ELECTRICAL SYSTEM. "This bulletin announces the availability of new oxygen sensors developed to address the following Diagnostic Trouble Codes (DTCs) detected by the Engine Control Module: • P0137: O2 Sensor Circuit Low Voltage Bank 1 Sensor 2 • P0138: O2 Sensor Circuit High Voltage Bank 1 Sensor 2 • P0140: O2 Sensor Circuit No Activity Detected Bank 1 Sensor 2 • P0141: O2 Sensor Heater Circuit Bank 1 Sensor 2"
14-31-252025-04-01. Service bulletin. UNKNOWN OR OTHER. This Bulletin announces availability of a User Guide and an informative video to supplement the recent releases to retailers of the SOA321152 and SOA321153 Terminal Test Kits.
15-322-25R2025-04-01. Service bulletin. ELECTRICAL SYSTEM. In the interest of customer satisfaction, Subaru of America, Inc. (SOA) is extending the New Car Limited Warranty coverage for the CP1 & Gen 3.1 Head Unit used in the above listed models and model years to (8) eight years / 150,000 miles to cover certain qualifying repairs to the infotainment audio system.
SubaruNet Announcement2025-04-01. Service bulletin. VISIBILITY/WIPER. This announcement is in regard to the warranty extension initiated for windshields for the models listed.

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