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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

Bulletins, newest first
16-136-22R2023-07-03. Service bulletin. POWER TRAIN:AUTOMATIC TRANSMISSION:TORQUE CONVERTER; POWER TRAIN; ENGINE AND ENGINE COOLING; POWER TRAIN:AUTOMATIC TRANSMISSION:INTERNAL:CVT; POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE (TCM/PCM/TECM). This service bulletin provides a temporary repair procedure to address vibrations and/or judder concerns experienced on turns during acceleration.
15-300-22R2023-07-03. Service bulletin. ENGINE AND ENGINE COOLING; ELECTRICAL SYSTEM; EQUIPMENT; COMMUNICATION:MANUFACTURER TELEMATICS. This Service Information Bulletin provides the diagnostic procedure for the STARLINK® Remote Engine Start (RES). All Gen2 and Gen3 Telematics Equipped Models.
05-62-18R2023-06-05. Service bulletin. SUSPENSION. This bulletin provides a procedure to address customer concerns of surface rust accumulating in the top center retaining nut area of the front strut mounts.
12-248-232023-06-05. Service bulletin. STRUCTURE. This Bulletin announces the repair procedure developed to address rattle-type sounds heard from the left and/or right B-Pillar area.
07-213-22R2023-06-05. Service bulletin. ELECTRICAL SYSTEM; EQUIPMENT. This bulletin announces a new Genuine Subaru Replacement battery for use in applications where the current SOA821B700 battery is specified.
09-80-21R2023-06-05. Service bulletin. ENGINE AND ENGINE COOLING; EQUIPMENT. This bulletin announces availability of a new thermo control valve assembly.
17-18-232023-06-05. Service bulletin. AIR BAGS; EQUIPMENT. This bulletin announces availability of the one-time use mounting clip and spacer clip for the air bag curtain module.
15-282-21R2023-06-05. Service bulletin. ENGINE AND ENGINE COOLING; ELECTRICAL SYSTEM; EQUIPMENT. This Bulletin announces additional diagnostic procedures and a detailed flow chart to be used when diagnosing customer concerns regarding the operation of the STARLINK Remote Engine Start (RES) feature.
11-204-232023-05-02. Service bulletin. ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:EMISSION CONTROL:CRANKCASE (PCV); ENGINE AND ENGINE COOLING. This Service Information Bulletin announces a design change made to the Positive Crankcase Ventilation (PCV) hose assembly.
07-217-232023-05-02. Service bulletin. EQUIPMENT; LATCHES/LOCKS/LINKAGES:DOORS:LOCK. This Bulletin announces additional cautions being added to the Owner’s Manual and Service Manual regarding the operation of door locks.
16-132-20R2023-05-02. Service bulletin. POWER TRAIN. 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 used in the models listed.
15-266-20R2023-05-02. Service bulletin. EQUIPMENT; ELECTRICAL SYSTEM. This Service Information Bulletin provides helpful procedures and best practices to utilize when customers present with concerns relating to the operation of their Gen 2/Gen 3 Telematics system equipped Subaru.
07-189-21R2023-05-02. Service bulletin. STRUCTURE; VISIBILITY:GLASS, SIDE/REAR; EQUIPMENT; ELECTRICAL SYSTEM. This bulletin announces availability of new front door window regulator assemblies 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.
1212711R2023-04-24. Service bulletin. VISIBILITY:GLASS, SIDE/REAR. If you encounter a customer complaint of a white residue build up on the rear door partition glass or interior molding, it may be crystallized salt.
171713R2023-04-24. Service bulletin. UNKNOWN OR OTHER; AIR BAGS; EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL. Event Data Recorder (EDR) Function of Airbag Module
036912R2023-04-17. Service bulletin. EQUIPMENT:MECHANICAL:INTEGRATED JACK/LEVELER/STABILIZER:HOSES/CABLES/RODS/GEARS/STRUT/CYLINDER. 6MT Transfer Driven Gear Bearing
15-273-202023-04-06. Service bulletin. ELECTRICAL SYSTEM; EQUIPMENT. This Service Information 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.
15-285-21R2023-04-06. Service bulletin. EQUIPMENT; EQUIPMENT:ELECTRICAL:INFOTAINMENT; ELECTRICAL SYSTEM. This Bulletin provides reference tables and photos to use for determining the infotainment head unit supplier and generation.
15-268-20R2023-04-06. Service bulletin. EQUIPMENT:ELECTRICAL:NAVIGATIONAL SYSTEM(GLOBAL POSITIONING SYSTEM); ELECTRICAL SYSTEM. USB Map Data Update Procedure for Denso Gen 4 Navigation Equipped System.
16-128-20R2023-04-06. Service bulletin. ELECTRICAL SYSTEM; POWER TRAIN. This bulletin announces availability of a new transmission harness for use when diagnosis of DTC P0842 -TRANSMISSION FLUID PRESSURE SENSOR / SWITCH “A” CIRCUIT LOW determines the sensor itself is OK but the transmission wiring harness is NG.
15-270-20R2023-04-06. Service bulletin. ELECTRICAL SYSTEM; EQUIPMENT:ELECTRICAL:NAVIGATIONAL SYSTEM(GLOBAL POSITIONING SYSTEM). This bulletin provides instruction for use of a new reprogramming procedure to optimize the Denso Gen 4 Audio and Navigation system utilized in the models listed.
15-240-19R2023-04-06. 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 while addressing customer concerns.
WRK-21/22R2023-04-06. Service bulletin. POWER TRAIN. Subaru of America, Inc. (Subaru) has initiated this safety and emissions Recall for certain 2019 -2020 model year Ascent vehicles, 2020-2021 model year turbo Legacy vehicles, and 2020-2021 model year turbo Outback vehicles in which the Continuously Variable Transmission (CVT) chain may slip and/or break.
15-261-20R2023-04-06. Service bulletin. EQUIPMENT:ELECTRICAL:NAVIGATIONAL SYSTEM(GLOBAL POSITIONING SYSTEM); 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 utilized in the models listed.
WRH-202023-04-06. 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.

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