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Service bulletins for the 2018 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.

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

By type

By component

By trouble code

Bulletins, newest first
09-78-212021-08-05. Service bulletin. ELECTRICAL SYSTEM; ENGINE AND ENGINE COOLING. This bulletin announces the availability of Engine Control Module (ECM) reprograming files to correct DTC P015A and/or P015B.
15-208-17R2021-08-05. Service bulletin. ELECTRICAL SYSTEM; EQUIPMENT. This bulletin announces availability of an enhancement to the Gracenote database included in the vehicles listed equipped with F10 7” Navigation and 7” Display Audio head units.
18-212-212021-08-05. Service bulletin. EQUIPMENT. The purpose of this bulletin is to provide a description of current changes to Service Manuals available via the Subaru Technical Information System (STIS) web site.
15-280-21R2021-07-03. Service bulletin. ELECTRICAL SYSTEM. Gen1 Telematics Reprogramming for 3G Sunset.
09-74-21R2021-07-03. Service bulletin. ENGINE AND ENGINE COOLING. 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).
16-131-20R2021-07-03. Service bulletin. POWER TRAIN. This bulletin provides corrected diagnostics containing a revised flow for certain CVT solenoid related DTCs.
01-167-08R2021-07-03. Service bulletin. ELECTRICAL SYSTEM; EQUIPMENT. This bulletin contains additional information for recommended materials listed in the Service Manuals for individual models
09-51-08R2021-07-03. Service bulletin. ENGINE AND ENGINE COOLING; EQUIPMENT. This bulletin is to advise of SOA’s revised catalytic converter recycling program shipping procedure.
15-208-17R2021-07-02. Service bulletin. ELECTRICAL SYSTEM. This bulletin announces availability of an enhancement to the Gracenote database included in the vehicles listed above equipped with F10 7” Navigation and 7” Display Audio head units.
02-187-212021-07-02. Service bulletin. ENGINE AND ENGINE COOLING. This bulletin outlines changes in the service procedure for engine oil pressure inspection.
15-279-21R2021-06-03. Service bulletin. ELECTRICAL SYSTEM. Subaru of America, Inc. (SOA) will be offering all active Gen1 STARLINK subscribers a complimentary Data Communication Module (DCM) update at any Subaru retailer for a predetermined period ending in February 2022. (Manual Transmission Vehicles with Push Button Start ONLY).
15-208-17R2021-06-03. Service bulletin. EQUIPMENT; ELECTRICAL SYSTEM. This bulletin announces availability of an enhancement to the Gracenote database included in the vehicles listed equipped with F10 7” Navigation and 7” Display Audio head units.
18-210-212021-06-03. Service bulletin. EQUIPMENT. Description of current changes to Service Manuals available via the Subaru Technical Information System (STIS) web site.
09-74-21R2021-06-02. Service bulletin. ENGINE AND ENGINE COOLING. This bulletin provides updated parts information and a service procedure to follow for removing accumulated carbon deposits from fuel injectors and internal engine components.
10-98-20R2021-05-04. Service bulletin. VISIBILITY:DEFROSTER/DEFOGGER/HVAC SYSTEM:COMPRESSOR. This bulletin announces availability of new A/C compressor assemblies designed to address customer concerns of reduced system performance accompanied by a rattling and / or scraping type sound.
15-280-21R2021-05-04. Service bulletin. POWER TRAIN; ELECTRICAL SYSTEM. Vehicles equipped with manual transmission and push-button start will follow DCM replacement procedure as outlined in TSB 15-279-21: Gen1 Telematics DCM Replacement for 3G Sunset which is applicable to manual transmission vehicles with push-button start ONLY.
15-280-21R2021-04-02. Service bulletin. ELECTRICAL SYSTEM. Gen1 Telematics Reprogramming for 3G Sunset.
05-84-212021-03-04. Service bulletin. EQUIPMENT. This bulletin announces availability of new front wheel hub assemblies incorporating bearing surfaces having increased resistance to imperfections resulting from shock loads.
11-199-20R2021-03-04. Service bulletin. ENGINE AND ENGINE COOLING; ELECTRICAL SYSTEM. This bulletin announces availability of reprogramming files to optimize the Engine Control Module (ECM).
11-201-212021-03-04. Service bulletin. ELECTRICAL SYSTEM; ENGINE AND ENGINE COOLING. This bulletin announces availability of reprogramming files to optimize the Engine Control Module (ECM). The new files will address DTC P0116 and hard starting in cold temperature concerns when an accessory engine block heater is utilized.
14-22-16R2021-02-18. Service bulletin. EQUIPMENT. To help reduce confusion and increase technician efficiency, Subaru of America, Inc. (SOA) has developed the following cross reference list to help locate the appropriate Special Service Tool.
15-267-20R2021-02-01. Service bulletin. EQUIPMENT; ELECTRICAL SYSTEM. This bulletin provides information related to the telematics system's Automatic Collision Notification (ACN) and Advanced Automatic Collision Notification (AACN) feature operation, diagnostic tips, and best practices.
03-78-17R2021-02-01. Service bulletin. EQUIPMENT; EQUIPMENT ADAPTIVE/MOBILITY; ENGINE AND ENGINE COOLING; POWER TRAIN:CLUTCH ASSEMBLY. This bulletin announces a design change to the clutch release bearing.
12-203-16R2021-02-01. Service bulletin. SEAT BELTS; SEATS. This bulletin provides a procedure to address customer concerns of a squeaking sound originating from where the front seat belt buckle assembly attaches to the seat frame.
01-168-09R2021-02-01. Service bulletin. ELECTRICAL SYSTEM; EQUIPMENT. The purpose of this bulletin is to provide replacement key and immobilizer information.

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