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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: Equipment and accessories are shown. Show all

Bulletins, newest first
14-27-212021-03-04. Service bulletin. ENGINE; 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.
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.
15-240-19R2021-03-04. Service bulletin. ELECTRICAL SYSTEM; EQUIPMENT. This bulletin announces availability of new Harman audio unit amplifier units with revised internal logic designed to optimize efficiency.
16-132-20R2021-03-04. Service bulletin. POWER TRAIN; EQUIPMENT ADAPTIVE/MOBILITY; EQUIPMENT. 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.
14-22-16R2021-02-18. Service bulletin. EQUIPMENT. To help reduce confusion and increase technician efficiency, Subaru of America, Inc. (SOA) has developed the following cross reference list to help locate the appropriate Special Service Tool.
15-265-20R2021-02-01. Service bulletin. ELECTRICAL SYSTEM; EQUIPMENT. This bulletin provides an overview and basic instructions for use of the “Destination to Vehicle” feature of the Gen 2 Telematics system.
15-267-20R2021-02-01. Service bulletin. EQUIPMENT; ELECTRICAL SYSTEM. This bulletin provides information related to the telematics system's Automatic Collision Notification (ACN) and Advanced Automatic Collision Notification (AACN) feature operation, diagnostic tips, and best practices.
12-307-212021-02-01. Service bulletin. VISIBILITY; EQUIPMENT ADAPTIVE/MOBILITY; EQUIPMENT. This bulletin announces changes to the configuration of the windshield washer hose and nozzle assemblies.
01-168-09R2021-02-01. Service bulletin. ELECTRICAL SYSTEM; EQUIPMENT. The purpose of this bulletin is to provide replacement key and immobilizer information.
Subarunet Announ2021-02-01. Service bulletin. EQUIPMENT; ELECTRICAL SYSTEM. Campaigns WRH-20 and WRI-20 related to a Denso Gen 4 CP1 software update. Critical points to avoiding unnecessary hardware replacement.
WRH-20R2021-02-01. Service bulletin. ELECTRICAL SYSTEM; EQUIPMENT. Subaru of America, Inc. is recalling certain 2020 model year Legacy and Outback vehicles in which a firmware-over-the-air (FOTA) update to the Cockpit Control Module (CCM) software may have timed out during the update.
16-132-20R2021-01-05. Service bulletin. POWER TRAIN; EQUIPMENT. This Service Information Bulletin provides updated diagnostic procedures to follow when diagnosing an alleged Chain Slip condition on the TR580 and TR690 model CVT transmissions.
Subaru Retailers2021-01-05. Service bulletin. EQUIPMENT; EQUIPMENT ADAPTIVE/MOBILITY; ELECTRICAL SYSTEM. The number of files required to complete the update for 20MY and 21MY is not the same. This detail is outlined in the WRI-20 Service Program bulletin as it applies to both 2020 and 2021 MY Legacy and Outback.
12-203-16R2021-01-05. Service bulletin. SEAT BELTS; EQUIPMENT ADAPTIVE/MOBILITY; EQUIPMENT. 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.
12-203-16R2021-01-05. Service bulletin. SEAT BELTS; SEATS; EQUIPMENT ADAPTIVE/MOBILITY; EQUIPMENT. 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.
15-246-19R2021-01-05. Service bulletin. ELECTRICAL SYSTEM; EQUIPMENT. This bulletin outlines a new required procedure to follow when performing immobilizer-related repairs on the all-new 2020 Legacy and Outback.
15-219-18R2021-01-05. Service bulletin. ELECTRICAL SYSTEM; EQUIPMENT. This bulletin provides information related to error code(s) 202 and/or 204 generated during the Gen 2 telematics subscription process.
15-261-20R2021-01-05. Service bulletin. ELECTRICAL SYSTEM; EQUIPMENT:ELECTRICAL:NAVIGATIONAL SYSTEM(GLOBAL POSITIONING 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 utilized in the models listed.
Subarunet Announ2021-01-05. Service bulletin. EQUIPMENT; ELECTRICAL SYSTEM. Subaru of America, Inc. (Subaru) is recalling certain 2020 model year Legacy and Outback vehicles in which a firmware-over-the-air (FOTA) update to the Cockpit Control Module (CCM) software may have timed out during the update.
Subarunet Announ2021-01-05. Service bulletin. ELECTRICAL SYSTEM; EQUIPMENT. In the interest of customer satisfaction, Subaru of America, Inc. (Subaru) is initiating a service campaign for certain 2020-2021 model year Legacy and Outback vehicles to update the Cockpit Control Module (CCM) software to the latest version.
Subarunet Announ2021-01-05. Service bulletin. ELECTRICAL SYSTEM; EQUIPMENT. Subaru of America, Inc. (Subaru) is recalling certain 2020 model year Legacy and Outback vehicles in which a firmware-over-the-air (FOTA) update to the Cockpit Control Module (CCM) software may have timed out during the update.
15-259-20R2021-01-05. Service bulletin. EQUIPMENT:ELECTRICAL:NAVIGATIONAL SYSTEM(GLOBAL POSITIONING SYSTEM); 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.
18-203-202020-12-05. Service bulletin. EQUIPMENT. 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.
15-275-202020-12-05. Service bulletin. ELECTRICAL SYSTEM; EQUIPMENT. This Service Information Bulletin provides a testing procedure for the microphone used in Denso CP1 infotainment systems.
2163162020-11-16. Service bulletin. EQUIPMENT ADAPTIVE/MOBILITY; ENGINE; EQUIPMENT. This Service Information bulletin provides new inspection and repair procedures for AVCS (Active Valve Control System) -related DTCs on the FA and FB engine equipped models listed above. The applicable Service Manuals will be revised with this new information in the near future.

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