Service bulletins for the 2021 Subaru Impreza
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.
323 on file from NHTSA, as of 2026-10-19.
By type
By component
By trouble code
| 15-236-18R | 2021-07-03. Service bulletin. ELECTRICAL SYSTEM. The 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. |
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| 09-74-21R | 2021-07-03. 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). |
| 01-167-08R | 2021-07-03. Service bulletin. ELECTRICAL SYSTEM; EQUIPMENT. This bulletin contains additional information for recommended materials listed in the Service Manuals for individual models |
| 09-51-08R | 2021-07-03. Service bulletin. ENGINE AND ENGINE COOLING; EQUIPMENT. This bulletin is to advise of SOA’s revised catalytic converter recycling program shipping procedure. |
| 02-187-21 | 2021-07-02. Service bulletin. ENGINE AND ENGINE COOLING. This bulletin outlines changes in the service procedure for engine oil pressure inspection. |
| 09-74-21R | 2021-06-02. 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. |
| 12-319-21 | 2021-05-05. Service bulletin. STRUCTURE. This bulletin announces design changes made to the front and rear door glass run channels. |
| 05-85-21R | 2021-05-05. Service bulletin. ELECTRICAL SYSTEM; WHEELS. This bulletin announces a design change made to the TPMS valve assemblies. |
| 15-282-21R | 2021-05-04. Service bulletin. ELECTRICAL SYSTEM. This bulletin provides additional procedures and a detailed flow chart to use when diagnosing customer concerns regarding operation of the STARLINK RES feature. |
| 15-240-19R | 2021-05-04. Service bulletin. EQUIPMENT. This bulletin announces availability of new audio unit amplifier units with revised internal logic designed to optimize efficiency. |
| 15-272-20R | 2021-05-04. Service bulletin. EQUIPMENT. This bulletin contains illustrations of exchange components and their manufacturer as well as a description of the proper exchange procedure. |
| Subarunet Announ | 2021-04-02. Service bulletin. ELECTRICAL SYSTEM. In January 2021, the replacement battery application for all Ascent and 2017- 2021 Impreza models were changed from part number SOA821B200 to part number SOA821B600. |
| 06-82-21 | 2021-04-02. Service bulletin. SUSPENSION. This bulletin provides a service procedure to address a squeaking-type sound from the rear suspension area customers may hear when going over bumps. |
| Subarunet Announ | 2021-03-04. Service bulletin. ELECTRICAL SYSTEM. SOA821B600 Battery Supersession |
| 12-312-21 | 2021-03-04. Service bulletin. EQUIPMENT; STRUCTURE. This bulletin announces availability of new center console armrest covers to address the a wrinkling condition. |
| 14-27-21 | 2021-03-04. Service bulletin. ENGINE; EQUIPMENT. This bulletin announces the upcoming issuance to all retailers of an essential tool update kit for the Engine Support Assembly Kit #J-50135-A. |
| 05-82-21 | 2021-03-04. Service bulletin. EQUIPMENT; SUSPENSION. This bulletin announces a design change made to the front strut dust cover to address a rubbing-type sound. |
| 15-221-18R | 2021-03-04. Service bulletin. EQUIPMENT; ELECTRICAL SYSTEM. This bulletin provides helpful information about operating conditions observed in the field for Technicians to use when diagnosing customer concerns which may arise while operating Harman Gen 3 Navigation and Display Audio systems. |
| 15-236-18R | 2021-03-04. Service bulletin. EQUIPMENT; ELECTRICAL SYSTEM. The 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. |
| 15-240-19R | 2021-03-04. Service bulletin. ELECTRICAL SYSTEM; EQUIPMENT. This bulletin announces availability of new Harman audio unit amplifier units with revised internal logic designed to optimize efficiency. |
| 16-132-20R | 2021-03-04. Service bulletin. POWER TRAIN; EQUIPMENT ADAPTIVE/MOBILITY; EQUIPMENT. This Service Information Bulletin provides updated diagnostic procedures to follow and a brief questionnaire to complete when diagnosing an alleged Chain Slip condition on the TR580 and TR690 model CVT transmissions. |
| Subarunet Announ | 2021-03-04. Service bulletin. POWER TRAIN; EQUIPMENT; EQUIPMENT ADAPTIVE/MOBILITY. Subaru of America, Inc. (Subaru) is recalling certain 2021 model year Outback and Impreza vehicles in which the CVT select lever cable nut may have been under-torqued during vehicle assembly. |
| WRA-21R | 2021-03-04. Service bulletin. POWER TRAIN; EQUIPMENT. Subaru of America, Inc. (Subaru) is recalling certain 2021 model year Outback and Impreza vehicles in which the CVT select lever cable nut may have been under-torqued during vehicle assembly. |
| 14-22-16R | 2021-02-18. 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. |
| WRA-21 | 2021-02-01. Service bulletin. POWER TRAIN. Subaru of America, Inc. is recalling certain 2021 model year Outback and Impreza vehicles in which the CVT select lever cable nut may have been under-torqued during vehicle assembly. |
The summaries are NHTSA's. Each bulletin's page links NHTSA's copy of the manufacturer's document.