2024 Subaru Legacy Technical Service Bulletins

237 technical service bulletins (TSBs) are on record for the 2024 Subaru Legacy. TSBs are notes manufacturers send to dealers about repair procedures for issues seen in the field. They are not recalls and do not by themselves mean a vehicle has a fault.

• 11029333Feb 10, 2026Electrical system. This announcement provides information for the WRB-26 DCM replacement and CCU initialization.
• 11029329Feb 6, 2026Electrical 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.
• 11027996Jan 20, 2026Electrical system. The following information announces reprogramming file availability and provides a software update installation procedure to optimize the new Gen 4.5 Denso CP1.5 Audio and Navigation head units utilized in the models listed.
• 11027986Jan 15, 2026Electrical system. This Subaru service and technical support line newsletter provides information on the next phase of TechShare.
• 11027984Jan 12, 2026Suspension. This bulletin announces design changes to the front stabilizer link to address concerns about boot cracking, which can allow grease to escape.
• 11027983Jan 12, 2026Electrical system. This Bulletin provides information on the availability of a new auxiliary USB terminal designed to resolve intermittent connectivity issues when connected via the USB port.
• 11027982Jan 12, 2026Electrical system, Engine. This Bulletin provides the diagnostic procedure for the STARLINK® Remote Engine Start (RES).
• 11027981Jan 12, 2026Other or unknown. This announcement has been created to address difficulties with software updates on Subaru Select Monitors with DST-010 interface firmware has been updated.
• 11027978Jan 8, 2026Engine, Fuel system. This bulletin announces the design change made to the high-pressure fuel pump developed to prevent DTC P0087 (Fuel Rail/System Pressure – Too Low Bank 1).
• 11027977Jan 8, 2026Electrical system. This Service Information Bulletin outlines a new required procedure to follow when performing immobilizer-related repairs on the vehicles listed.
• 11027103Dec 23, 2025Electrical system, Engine. This Service Information Bulletin outlines a new required procedure to follow when performing immobilizer-related repairs on models listed.
• 11027090Dec 12, 2025Fuel 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).
• 11027083Dec 8, 2025Engine, Electrical system. This Service Information Bulletin provides the Service Manual Correction to the diagnostic procedure for DTC B2A16 (Immobilizer Key Collation Diagnosis).
• 11027081Dec 8, 2025Electrical system, Fuel system, Engine. This bulletin announces the diagnostic procedures to be used when DTCs P2096 (POST CATALYST FUEL TRIM SYSTEM TOO LEAN BANK 1) and P2097 (POST CATALYST FUEL TRIM SYSTEM TOO RICH BANK 1) are detected by the Engine Control Module (ECM).
• 11027073Dec 2, 2025Electrical system. This bulletin contains illustrations of exchange components and their manufacturer as well as a description of the proper exchange procedure.
• 11025796Nov 20, 2025Other or unknown. Subaru service article locator.
• 11025791Nov 20, 2025Body and structure. This Bulletin announces a new diagnostic procedure for addressing NVH (Noise, Vibration, and Harshness) originating from the roof area.
• 11025790Nov 20, 2025Electrical system, Engine. This bulletin announces the diagnostic procedures to be used when DTCs P2096 (POST CATALYST FUEL TRIM SYSTEM TOO LEAN BANK 1) and P2097 (POST CATALYST FUEL TRIM SYSTEM TOO RICH BANK 1) are detected by the Engine Control Module (ECM).
• 11025789Nov 20, 2025Other or unknown. Subaru service article locator.
• 11025788Nov 18, 2025Seats. This bulletin announces a design change to the driver front lower seat cushion cover, addressing cases of tearing at the bottom corner of the cushion in vehicles equipped with a thigh extension.
• 11025785Nov 14, 2025Electrical system. This bulletin announces reprogramming file that provides a software update installation procedure to optimize the new Gen 4.5 Denso CP1.5 Audio and Navigation head units utilized in the models listed.
• 11025781Nov 4, 2025Electrical system. This bulletin announces a new Genuine Subaru Replacement battery for use in applications where the current SOA821B700 battery is specified.
• 11024867Oct 29, 2025Other or unknown. This bulletin provides information on the load carrying capacity reduced label when a port-installed or retailer-installed accessory exeeds 1.5 percent of the GVWR or 100 pounds, which ever is lower.
• 11024869Oct 28, 2025Electrical system. This Service Information Bulletin outlines a systematic procedure for diagnosing parasitic draw (dark/standby current) in vehicles experiencing battery drain when the ignition is off, leading to no-start conditions or frequent jump-starts.
• 11024866Oct 28, 2025Electrical system. This Service Bulletin is to inform you of a procedure to restore CP1.5’s normal operation by initializing the head unit.
• 11024865Oct 28, 2025Electrical system, Transmission and drivetrain. This bulletin provides guidance when diagnosing chain slip, judder, shudder, and hesitation concerns on the TR690 model CVT transmissions used in the models listed.
• 11024864Oct 28, 2025Engine, Electrical system. This bulletin announces the diagnostic procedures to be followed when encountering cases of the Remote Engine Start (RES) system being the only non-functioning feature with telematics.
• 11024863Oct 28, 2025Other or unknown. Subaru tech tips newsletter article locator.
• 11024859Oct 28, 2025Other or unknown. Subaru tech tips newsletter article locator.
• 11024858Oct 23, 2025Electrical system. This Bulletin outlines a comprehensive update to the dark current/parasitic draw diagnosis & testing procedures.
• 11024857Oct 23, 2025Electrical system. This Bulletin provides details on a new formal testing, charging, and tracking procedure for all 12-volt batteries in new vehicle inventory.
• 11024856Oct 23, 2025Electrical system, Seats. This bulletin announces the availability of new seat ventilation blower units which have been redesigned to address some cases of a vibration-type sound emitting from the blower unit during seat ventilation operation.
• 11024855Oct 22, 2025Electrical system. This announcement notifies Subaru retailers that certain 23MY and 24MY Legacy and Outback customers are receiving a pop-up message whenever they start their vehicle making them aware that their connected vehicle services are not currently functioning.
• 11024853Oct 16, 2025Electrical system. This bulletin announces reprogramming file availability and provides a software update installation procedure to optimize the new Gen 4.5 Denso CP1.5 Audio and Navigation head units utilized in the models listed.
• 11024847Oct 9, 2025Electrical system. This bulletin provides instruction for use of a new reprogramming procedure to optimize the Denso Gen 4.5 Audio and Navigation system utilized in the models listed.
• 11023524Sep 30, 2025Electrical system. This bulletin addresses cases when attempting to complete the STARLINK Telematics subscription process, an Error Code 202 and / or 204 may occur preventing the process from completing successfully.
• 11023508Sep 30, 2025Seats, Electrical system. This bulletin announces the availability of new seat ventilation blower units. This update is set to address some cases of a vibration-type sound emitting from the blower unit during seat ventilation operation.
• 11023518Sep 29, 2025Electrical system. This OTA is an software update to provide audio improvements for the models listed.
• 11023507Sep 18, 2025Electrical system. The following information announces reprogramming file availability and provides a software update installation procedure to optimize the new Gen 4.5 Denso CP1.5 Audio and Navigation head units utilized in the models listed.
• 11023505Sep 5, 2025Electrical 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.
• 11023500Sep 3, 2025Electrical system. This Bulletin provides details on a new formal testing, charging, and tracking procedure for all 12-volt batteries in new vehicle inventory wjhich must be tested and reported every 30 days.
• 11023498Sep 2, 2025Transmission and drivetrain. This Bulletin announces the release of a new diagnostic assistance application for TR690 CVT-equipped vehicles.
• 11022331Aug 26, 2025Electrical system. This 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.
• 11022319Aug 21, 2025Electrical system. This bulletin contains illustrations of exchange components and their manufacturer as well as a description of the proper exchange procedure.
• 11022313Aug 14, 2025Engine. 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).
• 11022309Aug 13, 2025Electrical system. Subaru of America, Inc. will release an OTA to perform a software update to the DCM. This is a preventive OTA.
• 11022305Aug 11, 2025Transmission and drivetrain, Engine, Electrical system. Subaru Service Technical Support Newsletter special edition.
• 11022304Aug 11, 2025Body and structure. This bulletin provides information on paint codes for vehicles in the 2026 line up.
• 11022303Aug 11, 2025Brakes, Electrical system. This bulletin announces the availability of reprogramming files for the HYDRAULIC UNIT ASSEMBLY(VDC). This logic was developed to address the following Diagnostic Trouble Code (DTC): C1411 ELECTRICAL CONTROL MODULE. If DTC C1411 is detected with a 30A2 failure detail code by the VDC perform the reprogramming procedure outlined.
• 11022302Aug 11, 2025Electrical system. This bulletin announces the availability of reprogramming files designed to improve the functionality of the Keyless Access Control Unit.

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