2023 Subaru WRX Technical Service Bulletins

212 technical service bulletins (TSBs) are on record for the 2023 Subaru WRX. 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.

• 11006931Aug 5, 2024Electrical system. This Bulletin provides additional diagnostics to follow when addressing a Telematics-related DTC B2A16.
• 11005624Jul 24, 2024Transmission and drivetrain. This annoucement provides parts personnel information about remanufactured transmissions that will no longer be available.
• 11005617Jul 18, 2024Fuel 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).
• 11005615Jul 18, 2024Electrical system. This announcement provides information for retailers to install the latest infotainment system software for Denso CP 1.5.
• 11005614Jul 17, 2024Electrical system. This bulletin announces important diagnostic information to utilize when testing the Data Communication Module (DCM) as a dark current/standby current source. All models equipped with Telematics except Solterra.
• 11005609Jul 15, 2024Electrical system, Air bags. This announcement provides information on Takata Recall Escalated Towing Program.
• 11005608Jul 11, 2024Engine. This thermo control valve video contains information on the replacement of thermo control valve.
• 11005599Jul 9, 2024Other or unknown. This Bulletin provides SOA paint codes to help eliminate possible confusion for 2025 MY vehicles.
• 11005595Jul 8, 2024Other or unknown. This bulletin contains additional information for recommended materials listed in the Service Manuals for individual models.
• 11005593Jul 8, 2024Suspension. This Bulletin provides guidance for diagnosing a leaking front or rear suspension strut.
• 11005589Jul 1, 2024Engine, Electrical system. This bulletin announces availability of reprogramming files to optimize the Engine Control Module (ECM).
• 11002728Jul 1, 2024Electrical system, Engine. This Bulletin outlines a new required procedure to follow when performing immobilizer-related repairs.
• 11002730Jun 28, 2024Electrical system. This information announces reprograming file availability for Gen 4.5 Denso CP1.5 Audio and Navigation systems. Inprovement for CarPlay concerns with hands-free calls when the receiving party is not able to hear the caller.
• 11002725Jun 25, 2024Brakes. This bulletin provides diagnosis and procedure information to be applied when diagnosing potential fluid leaks on front and rear brake calipers. This information has been developed to reduce unnecessary brake caliper replacement.
• 11000830May 14, 2024Engine, 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.
• 10254003Apr 30, 2024Equipment, 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.
• 10252494Mar 25, 2024Electrical system, Equipment. This bulletin provides information for all Gen 3 Telematics and Cp 1.5 infotainment equipped vehicles, starting with 2023MY, allowing access to valet mode through the head unit.
• 10252492Mar 19, 2024Equipment. This bulletin has been developed for use as a quick reference tool to aid in diagnosing operational concerns of the Gen 2 Telematics system’s remote access features.
• 10252491Mar 19, 2024Electrical system, Equipment. This bulletin addresses an error code 202 and or 204 when attempting to complete the STARLINK telematics subsription process.
• 10252460Mar 18, 2024Engine cooling, Equipment. This bulletin announces the availability of reprogramming files for the Engine Control Module (ECM). This will address cases of DTC P04AE for the EVAP purge control valve stuck open.
• 10252459Mar 15, 2024Equipment, Electrical system. This bulletin announces reprograming files for the optimization of Gen 4 Denso CP1 audio and navigation head units.
• 10249591Jan 2, 2024Equipment, Electrical system. This Service Information Bulletin outlines a new required procedure to follow when performing immobilizer-related repairs.
• 10248201Dec 19, 2023Equipment, Transmission and drivetrain. Subaru of America, Inc. (Subaru) has initiated a safety recall for certain 2023 model year WRX vehicles, certain 2024 model year Crosstrek and Impreza vehicles, and certain 2023-2024 model year Forester vehicles.
• 10248194Dec 14, 2023Transmission and drivetrain, Equipment. Subaru of America, Inc. (Subaru) has initiated a safety recall for certain 2023 model year WRX vehicles, certain 2024 model year Crosstrek and Impreza vehicles, and certain 2023-2024 model year Forester vehicles.
• 10248191Dec 7, 2023Equipment, Electrical system. OTA version of RC 2304 Announcement
• 10246138Nov 27, 2023Engine cooling. This bulletin announces design changes made to the Exhaust Pipe Front (EPF) to address concerns of rattle-type or fluttering sounds coming from the undercarriage during acceleration caused by cracking in the EPF.
• 10246135Nov 27, 2023Engine cooling. This bulletin the announces availability of new reprogramming files for the Engine Control Module (ECM) developed to address cases of DTC P04AE (EVAP System Purge Control Valve “B” Performance / Stuck Open).
• 10246112Nov 16, 2023Transmission and drivetrain. Subaru of America, Inc. (Subaru) has initiated a safety recall for certain 2023 model year WRX vehicles, certain 2024 model year Crosstrek and Impreza vehicles, and certain 2023-2024 model year Forester vehicles.
• 10246091Nov 10, 2023Transmission and drivetrain, Equipment. Subaru of America, Inc. (Subaru) has initiated a safety recall for certain 2023 model year WRX vehicles, certain 2024 model year Crosstrek and Impreza vehicles, and certain 2023-2024 model year Forester vehicles.
• 10246083Nov 7, 2023Engine cooling, Equipment. This Service Information Bulletin announces diagnostic service procedures to be followed when DTC P0420 (Catalyst System Efficiency Below Threshold Bank 1) is detected by the Engine Control Module (ECM).
• 10244903Oct 26, 2023Electrical system, Equipment, Other or unknown. 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.
• 10244908Oct 12, 2023Equipment, Electrical system. This Service Information Bulletin is to inform you of the diagnosis procedure of the CP1/ CP1.5 Infotainment System when DTC B2256 is detected.
• 10243401Sep 28, 2023Electrical system, Seats. This bulletin announces a design change made to the outer hinge cover on the driver’s 10-way adjustable power seats.
• 10241846Aug 31, 2023Equipment, Electrical system, Engine cooling. This Service Information 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.
• 10241830Aug 15, 2023Seats. "This bulletin announces a design change made to the outer hinge cover on the driver’s 10-way adjustable power seats."
• 10241801Aug 1, 2023Electrical system, Equipment, Latches, locks and linkages. The purpose of this bulletin is to provide replacement key and immobilizer information along with an overview of the Subaru Lock Information web-site.
• 10240123Jul 31, 2023Equipment, Electrical system. This Service Information Bulletin has been developed to outline the steps for gathering basic but essential information during diagnosis of Infotainment concerns.
• 10240113Jul 13, 2023Equipment, Electrical system. This Bulletin provides reference tables and photos to use for determining the infotainment head unit supplier and generation.
• 10240110Jul 11, 2023Equipment. This bulletin announces the recommended cleaning procedures to followed when encountering vehicles with long time exposure to pollen on painted surfaces on vehicles imported from Japan. This bulletin does not apply to SIA built vehicles.
• 10238472Jun 30, 2023Electrical system, Equipment. This Service Information Bulletin outlines a new required procedure to follow when performing immobilizer-related repairs.
• 10238440Jun 13, 2023Transmission and drivetrain, Engine cooling. This service bulletin provides a temporary repair procedure to address vibrations and/or judder concerns experienced on turns during acceleration.
• 10238438Jun 5, 2023Electrical system, Other or unknown, Engine cooling, Equipment. This Service Information Bulletin provides the diagnostic procedure for the STARLINK® Remote Engine Start (RES). All Gen2 and Gen3 Telematics Equipped Models.
• 10237288May 22, 2023Electrical system, Equipment. 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.
• 10237272May 11, 2023Equipment, Electrical system. This bulletin contains illustrations of exchange components and their manufacturer as well as a description of the proper exchange procedure.
• 10235287Apr 11, 2023Equipment, Electrical system. This bulletin contains illustrations of exchange components and their manufacturer as well as a description of the proper exchange procedure.
• 10235285Apr 5, 2023Equipment, 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.
• 10233907Mar 23, 2023Equipment, Electrical system. This Bulletin provides reference tables and photos to use for determining the infotainment head unit supplier and generation.
• 10233917Mar 15, 2023Equipment, Electrical system. 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.
• 10233899Mar 15, 2023Equipment, Electrical system. USB Map Data Update Procedure for Denso Gen 4 Navigation Equipped System.
• 10233892Mar 15, 2023Electrical system, Equipment. 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.

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