2021 Subaru WRX STI

Service bulletins

Technical service bulletins and other communications the manufacturer sent dealers about this vehicle. Ask a dealer for the full document by its number.

• 11010925This 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.
• 11010919The following information addresses reprogramming file availability and a software update installation procedure to provide optimization to the new Harman Gen 3.1 Audio and Navigation head units utilized in the models as listed.
• 11009701This bulletin details an important regulation issued by the National Highway Traffic Safety Administration (NHTSA) which impacts the way some vehicles with accessories are sold. This regulation applies to any automobile retailer installing accessories on a vehicle prior to its first sale.
• 11009685This bulletin contains additional information for recommended materials listed in the Service Manuals for individual models.
• 11008283This Service Information Bulletin announces the preferred practices to be used when handling vehicles equipped with Gen2 Telematics which are enrolled in the Subaru STARLINK Security Plus Service featuring Stolen Vehicle Recovery Plus with Immobilizer.
• 11008282This bulletin contains additional information for recommended materials listed in the Service Manuals for individual models.
• 11008281This Service Information Bulletin announces the diagnostic procedures to be followed when diagnosing engine oil leakage on FA and FB type engines.
• 11008280This Service Information bulletin is being released as guidance for proper testing and charging of vehicle batteries.
• 11008279This bulletin contains illustrations of exchange components and their manufacturer as well as a description of the proper exchange procedure.
• 11008276The CP1.5 RCs OTA is available for all mid and high grade CP1.5 head units.
• 11008267This bulletin announces availability of the NEW genuine Subaru engine oil filter.
• 11008259This bulletin outlines the judgment criteria to be used when inspecting front transverse link bushings to reduce unnecessary bushing replacement.
• 11006935This bulletin contains illustrations of exchange components and their manufacturer as well as a description of the proper exchange procedure for 2025MY vehicles.
• 11006934The purpose of this bulletin is to provide replacement key and immobilizer information along with an overview of the Subaru Lock Information web-site.
• 11006932This Service Information Bulletin announces important diagnostic information to utilize when the Data Communication Module (DCM) is being tested as a dark current/standby current source.
• 11006931This Bulletin provides additional diagnostics to follow when addressing a Telematics-related DTC B2A16.
• 11005624This annoucement provides parts personnel information about remanufactured transmissions that will no longer be available.
• 11005615This announcement provides information for retailers to install the latest infotainment system software for Denso CP 1.5.
• 11005614This 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.
• 11005609This announcement provides information on Takata Recall Escalated Towing Program.
• 11005608This thermo control valve video contains information on the replacement of thermo control valve.
• 11005605This bulletin addresses reprogramming file availability and a software update installation procedure to provide optimization to the new Harman Gen 3.1 Audio and Navigation head units utilized in the models as listed.
• 11005599This Bulletin provides SOA paint codes to help eliminate possible confusion for 2025 MY vehicles.
• 11005595This bulletin contains additional information for recommended materials listed in the Service Manuals for individual models.
• 11005593This Bulletin provides guidance for diagnosing a leaking front or rear suspension strut.
• 11002730This 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.
• 11002725This 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.
• 10253981T16 VoLTE Warranty Extension (15-318-24R) Frequently Asked Questions.
• 10253955This bulletin announces the availability of the DCM Bypass Box designed to be used as an alternative replacement part for Data Communication Module (DCM) in vehicles with no active STARLINK subscription. There will be a warranty extension for the DCM up to 8 years (96 months) or 150,000 miles.
• 10252541This bulletin addresses the reprogramming file availability and a software update installation procedure to provide optimization to the new Harman Gen 3.1 Audio and Navigation head units utilized in the models as listed.
• 10252492This bulletin has been developed for use as a quick reference tool to aid in diagnosing operational concerns of the Gen 2 Telematics systems remote access features.
• 10252491This bulletin addresses an error code 202 and or 204 when attempting to complete the STARLINK telematics subsription process.
• 10249598Subaru of America, Inc. (Subaru) is initiating a new safety recall for certain 2015-2021 model year WRX STI vehicles, which may contain a defective back-up lamp switch.
• 10249593Subaru of America, Inc. (Subaru) is initiating a new safety recall for certain 2015-2021 model year WRX STI vehicles, which may contain a defective backup lamp switch.
• 10248193The following information addresses reprogramming file availability and a software update installation procedure to provide optimization to the new Harman Gen 3.1 Audio and Navigation head units utilized in the models as listed.
• 10246098Subaru of America, Inc. (Subaru) is initiating a new safety recall for certain 2015-2021 model year WRX STI vehicles, which may contain a defective back-up lamp switch.
• 10244903This 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.
• 10244889The following information addresses reprogramming file availability and a software update installation procedure to provide optimization to the new Harman Gen 3.1 Audio and Navigation head units utilized in the models as listed
• 10241846This 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.
• 10241801The purpose of this bulletin is to provide replacement key and immobilizer information along with an overview of the Subaru Lock Information web-site.

Every Subaru WRX STI model year

Bars are owner complaints, dots mark years with recalls. Select a year to open its report.