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Service bulletins for the 2021 Subaru WRX

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.

230 on file from NHTSA, as of 2026-10-19.

By type

By component

By trouble code

Bulletins, newest first
SubaruNet Announcement (M2026-10-05. Other. ELECTRICAL SYSTEM; UNKNOWN OR OTHER. This announcement provides information on a new software update for the Midtronics Dss and DCA machines.
13-109-262026-10-05. Service bulletin. UNKNOWN OR OTHER. This bulletin provides paint code information for 2027 model year vehicles.
18-244-262026-10-05. Service bulletin. ELECTRICAL SYSTEM. "This Bulletin announces additional troubleshooting steps for the following DTCs: DTC C1956: RH Actuator Circuit DTC C1957: LH Actuator Circuit"
SubaruNet Announcement (C2026-10-05. Other. UNKNOWN OR OTHER. This announcement provides an update to all 2027 model year Subaru warranty coverages for wear items and adjustments.
15-333-25R2026-10-05. Service bulletin. UNKNOWN OR OTHER; ELECTRICAL SYSTEM. This bulletin contains illustrations of exchange components and their manufacturer as well as a description of the proper exchange procedure. This is an revised version of the original bulletin.
15-322-25R2026-10-05. Service bulletin. ELECTRICAL SYSTEM; UNKNOWN OR OTHER. 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. This is an revised version of the original bulletin.
15-304-22R2026-10-05. Service bulletin. ELECTRICAL SYSTEM. This bulletin has been developed to outline the steps for gathering basic but essential information during diagnosis of Infotainment concerns. This is an revised version of the original bulletin.
15-308-23R2026-09-03. Service bulletin. ELECTRICAL 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.This is an revised version of the original bulletin.
15-304-22R2026-09-03. Service bulletin. ELECTRICAL SYSTEM. This Bulletin has been developed to outline the steps for gathering basic but essential information during diagnosis of Infotainment concerns. (This is an revised version of the original bulletin.)
Article Locator2026-09-03. Other. ELECTRICAL SYSTEM. Techtips newsletter locator index.
15-333-25R2026-09-03. Service bulletin. ELECTRICAL SYSTEM. This bulletin contains illustrations of exchange components and their manufacturer as well as a description of the proper exchange procedure. This is an revised version of the original bulletin
02-193-24R2026-07-02. Service bulletin. 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). (This is an revised version of the original bulletin.)
09-74-21R2026-07-02. Service bulletin. ENGINE; FUEL/PROPULSION SYSTEM. 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). (This is an revised version of the original bulletin.)
SubaruNet Annoucement (E2026-07-02. Other. UNKNOWN OR OTHER. This announcement is requesting retailer staff to retain the EyeSight protective hood covers from Generation 4 EyeSight cameras.
01-167-08R2026-06-01. Service bulletin. UNKNOWN OR OTHER. This bulletin contains additional information for recommended materials listed in the Service Manuals for individual models.
02-193-24R2026-06-01. Service bulletin. 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).
SubaruNet Announcement (R2026-06-01. Other. POWER TRAIN. This announcement provides information on the remanufactured CVT transmission program.
18-230-262026-06-01. Service bulletin. ENGINE. This bulletin announces the diagnostic procedures to be used when DTCs B1571(REFERENCE CODE INCOMPATIBILITY IMMOBILIZER CM TO ECM) and B1572(IMM CIRCUIT EXCEPT ANTENNA CIRCUIT) are detected by Keyless Access with Push Button Start(KACM).
03-97-262026-05-04. Service bulletin. POWER TRAIN. This bulletin announces the service manual correction regarding clutch master cylinder reservoir service procedures.
01-167-08R2026-05-04. Service bulletin. UNKNOWN OR OTHER. This bulletin contains additional information for recommended materials listed in the Service Manuals for individual models.
05-97-262026-05-04. Service bulletin. STEERING; WHEELS. This Bulletin provides the diagnostic procedures to be followed when addressing customer concerns of steering wheel/vehicle body vibration when driving at highway speeds when tire/wheel balance is suspected.
07-240-26R2026-05-04. Service bulletin. UNKNOWN OR OTHER. This Service Information Bulletin was developed to provide interim guidance for vehicles exhibiting DTC B2A20.
15-219-18R2026-04-02. Service bulletin. ELECTRICAL SYSTEM. This bulletin contains information to help when attempting to complete the STARLINK Telematics subscription process, an Error Code 202 and / or 204 may occur preventing the process from completing successfully
SubaruNet Announcement (A2026-04-02. Other. ELECTRICAL SYSTEM. This announcement provides information on the use of aftermarket services or tools for programming immobilizer keys/fobs.
10-105-25R2026-04-02. Service bulletin. ELECTRICAL 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.

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