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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

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

Bulletins, newest first
WRA-24R2025-04-01. 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. Updates to the bulletin are to the power seat service procedure.
09-120-24R2025-04-01. Service bulletin. ENGINE; ELECTRICAL SYSTEM. "This bulletin announces availability of new reprograming files for the Engine Control Module (ECM) developed to remedy the following DTCs: • P0016: Crankshaft Position - Camshaft Position Correlation Bank 1 Sensor A • P0017: Crankshaft Position - Camshaft Position Correlation Bank 1 Sensor B • P0018: Crankshaft Position - Camshaft Position Correlation Bank 2 Sensor A • P0019: Crankshaft Position - Camshaft Position Correlation Bank 2 Sensor B • P0087: Fuel Rail/System Pressure – Too Low Bank 1 These files contain enhanced logic for the self-diagnosis program of the ECM and to optimize stabilization of fuel pressure. "
15-322-25R2025-03-04. 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.
07-189-21R2025-03-04. Service bulletin. ELECTRICAL SYSTEM; VISIBILITY/WIPER. 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.
09-125-24R2025-03-04. Service bulletin. ELECTRICAL SYSTEM; ENGINE. This bulletin announces the availability of new reprogramming files for the Engine Control Module (ECM), to address concerns of the starter motor not operating.
15-251-19R2025-03-04. Service bulletin. ELECTRICAL SYSTEM. "This Service Bulletin provides additional diagnostics to follow when addressing a Telematics-related DTC B2A16."
WRA-242025-03-04. Service bulletin. SEATS; ELECTRICAL SYSTEM; 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.
Subaru Announcement (WRA-2025-03-04. Other. ELECTRICAL SYSTEM; SEATS; AIR BAGS. This announcment is an update on safety recall WRA-24 ODS sensor replacement. Used vehicle inventory & CPO updates.
Subarunet Announcement (W2025-03-04. Other. SEATS; ELECTRICAL SYSTEM; AIR BAGS. This announcement is an update on safety recall WRA-24 ODS sensor replacement.
Subarunet Announcement2025-02-04. Other. ELECTRICAL SYSTEM. As part of Subaru's dedication to customer satisfaction, Subaru of America, Inc. (SOA) is announcing a Warranty Extension of the New Vehicle Limited Warranty coverage for the CP1 & Gen 3.1 Infotainment head units for the models listed.
15-322-252025-02-04. Service bulletin. ELECTRICAL SYSTEM. This bulletin gives information on extended New Car Limited Warranty for CP1 and Gen 3.1 Head Units.
RC5 Head Unit OTA2025-02-04. Other. ELECTRICAL SYSTEM. A head unit OTA will be available via cellular network for Mid and High Grade CP1.5 head units.
Subaru Announcement (WRA-2025-02-04. Other. SEATS; ELECTRICAL SYSTEM; AIR BAGS. This announcement is in regard to special service tool shipment for completion of the upcoming ERA-24 ODS sensor replacement safety recall.
15-321-24R2025-02-04. Service bulletin. ELECTRICAL SYSTEM. "This bulletin announces the design change made to the Center Information Display (CID) assemblies developed to address the following symptoms. 1. Illumination malfunction of the adjustment knobs and/or buttons (no illumination or flash/ flicker). 2. False response when adjusting the blower speed (touch sensing alignment). "
16-149-252025-02-04. Service bulletin. POWER TRAIN; ELECTRICAL SYSTEM. "This bulletin announces availability of the new TR580 control valve and connector cover developed to address cases of the following DTCs detected by the Transmission Control Module (TCM): • P2721: Pressure Control Solenoid “D” Control Circuit High • P2763: Torque Converter Clutch Pressure Control Solenoid Control Circuit High • P0974: Shift Solenoid “A” Control Circuit High • P0977: Shift Solenoid “”B”” Control Circuit High"
09-122-24R2025-02-03. Service bulletin. FUEL/PROPULSION SYSTEM; ELECTRICAL SYSTEM. This bulletin the announces diagnostic procedures and availability of new Engine Control Module (ECM) reprogramming files to address DTC P2404 (Evap System Leak Detection Pump Sense Circuit Range/Performance) detection.
15-246-19R2025-01-03. Service bulletin. ENGINE; ELECTRICAL SYSTEM. This Bulletin outlines a new required procedure to follow when performing immobilizer-related repairs on the models listed.
09-122-24R2025-01-03. Service bulletin. ELECTRICAL SYSTEM; ENGINE. This bulletin the announces diagnostic procedures and availability of new Engine Control Module (ECM) reprogramming files to address DTC P2404 (Evap System Leak Detection Pump Sense Circuit Range/Performance) detection.
07-59-07R2025-01-03. Service bulletin. EXTERIOR LIGHTING; ELECTRICAL SYSTEM. This bulletin is for information purposes only.The bulletin adresses design changes of the headlamps and rear combination lamps, where moisture and or condensation may develop on the inside of the lamp lenses.
16-150-24R2025-01-03. Service bulletin. ELECTRICAL SYSTEM; ENGINE. "This bulletin announces availability of new reprogramming files developed to address the two symptoms described below: SYMPTOM 1: A jerk or judder sensation felt from the powertrain during braking with the air conditioning on. SYPMTOM 2: A shudder is felt from the powertrain along with a screeching type of sound. NOTE: Both of these symptoms are not related with a fault code. The new files contain enhanced software optimizing input clutch application along with enhanced hydraulic pressure control during braking/deceleration."
16-150-24R2024-12-03. Service bulletin. ELECTRICAL SYSTEM; POWER TRAIN. "This bulletin announces availability of new reprogramming files developed to address the two symptoms described below: SYMPTOM 1: A jerk or judder sensation felt from the powertrain during braking with the air conditioning on. SYPMTOM 2: A shudder is felt from the powertrain along with a screeching type of sound. NOTE: Both of these symptoms are not related with a fault code."
SubaruNet Announcement2024-12-03. Other. ELECTRICAL SYSTEM. This annocement is to inform dealers to the Gen 3.1 Head Unit OTA will be available via Wi-Fi. The update will take place in multiple batches with the first beginneing November 15th and the last being Decemeber 3rd. This update is for approximatelt 714,000 VINs.
15-270-20R2024-12-02. Service bulletin. ELECTRICAL 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.
16-150-24R2024-11-04. Service bulletin. POWER TRAIN; ELECTRICAL SYSTEM; ENGINE. This bulletin announces availability of new reprogramming files developed to address symptoms which a jerk or judder sensation can be felt from the powertrain during braking with air conditioning on, or a shudder felt from the powertrain along with a screeching type of sound.
16-151-242024-11-04. Service bulletin. ELECTRICAL SYSTEM; POWER TRAIN. This bulletin provides guidance when diagnosing chain slip, judder, shudder, and hesitation concerns on the TR690 model CVT transmissions used in the models listed.

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