Service bulletins for the 2021 Subaru Forester
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.
371 on file from NHTSA, as of 2026-10-19.
By type
By component
By trouble code
| 18-225-22 | 2022-07-06. Service bulletin. ELECTRICAL SYSTEM; EQUIPMENT. This Service Bulletin is to inform you of the diagnosis procedure of the Harman Infotainment System when DTC B2255 is detected. |
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| 09-89-22R | 2022-07-06. Service bulletin. ENGINE AND ENGINE COOLING; ELECTRICAL SYSTEM. This bulletin announces availability of new reprograming files for the Engine Control Module (ECM). |
| 12-239-21 | 2022-07-06. Service bulletin. LATCHES/LOCKS/LINKAGES; EQUIPMENT. This bulletin announces a design change made to the rear gate stay assemblies. |
| 15-236-18R | 2022-06-03. 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. |
| 09-89-22 | 2022-06-03. Service bulletin. ENGINE AND ENGINE COOLING; ELECTRICAL SYSTEM. This bulletin announces availability of new reprograming files for the Engine Control Module (ECM). |
| 18-218-22 | 2022-06-03. Service bulletin. EQUIPMENT; ELECTRICAL SYSTEM. This bulletin announces the Service Manual correction for the diagnostic trouble tree for DTC B281C. |
| 07-205-22R | 2022-05-03. Service bulletin. EQUIPMENT; ELECTRICAL SYSTEM; BACK OVER PREVENTION. This bulletin announces the availability of new reprogramming files for the Subaru Rear Vehicle Detection (SRVD) system. |
| 12-237-22 | 2022-05-03. Service bulletin. EQUIPMENT. This bulletin announces the design change made to the side cowl panels. |
| 18-221-22 | 2022-05-03. 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. |
| 07-205-22 | 2022-04-05. Service bulletin. EQUIPMENT; BACK OVER PREVENTION; ELECTRICAL SYSTEM. This bulletin announces the availability of new reprogramming files for the Subaru Rear Vehicle Detection (SRVD) system. |
| 15-192-22R | 2022-04-05. Service bulletin. ELECTRICAL SYSTEM. This bulletin has been developed to outline the steps for gathering basic essential information during diagnosis and repair of the Infotainment concerns. (Applicable to all models with Harman or Denso CP1 Infotainment). |
| 15-240-19R | 2022-04-05. Service bulletin. ELECTRICAL SYSTEM. This bulletin announces availability of new Harman audio unit amplifier units with revised internal logic designed to optimize efficiency while addressing customer concerns. |
| 12-233-22 | 2022-03-04. Service bulletin. VISIBILITY. This bulletin announces the design change to the front window channel running channel seals. |
| 01-175-16 | 2022-03-04. Service bulletin. EQUIPMENT; ELECTRICAL SYSTEM. This bulletin provides helpful tips to better utilize the Subaru Select Monitor 4. |
| 16-132-20R | 2022-03-04. Service bulletin. POWER TRAIN. This 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. |
| 09-80-21 | 2022-03-04. Service bulletin. ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:EMISSION CONTROL:GAS RECIRCULATION VALVE (EGR VALVE). This bulletin announces availability of a new thermo control valve assembly. |
| Subarunet Announ | 2022-03-04. Service bulletin. POWER TRAIN. WRK-21 CVT Chain Guide Breakage Recall - Customer communications and rental. |
| 03-87-21 | 2022-02-04. Service bulletin. POWER TRAIN. This bulletin provides a repair procedure for R152 type rear differentials. |
| 15-240-19R | 2022-02-04. 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 | 2022-02-04. Service bulletin. EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL; POWER TRAIN:AUTOMATIC TRANSMISSION. This 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. |
| 02-189-22 | 2022-02-04. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE:OIL/LUBRICATION:SUMP/TANK:DRAIN PLUG; EQUIPMENT. This Bulletin announces design changes to the engine oil and CVT fluid drain plugs. |
| 15-272-20R | 2022-02-04. Service bulletin. EQUIPMENT; ELECTRICAL SYSTEM. This bulletin contains illustrations of exchange components and their manufacturer as well as a description of the proper exchange procedure. |
| 15-251-19R | 2022-01-04. Service bulletin. ELECTRICAL SYSTEM. This bulletin provides additional diagnostics to follow when addressing a Telematics-related DTC B2A16. |
| 05-88-21 | 2022-01-04. Service bulletin. SUSPENSION. This bulletin announces a design change made to the front stabilizer bushings. |
| 15-240-19R | 2022-01-04. Service bulletin. ELECTRICAL SYSTEM; EQUIPMENT:ELECTRICAL:RADIO/TAPE DECK/CD ETC.. This bulletin announces availability of new Harman audio unit amplifier units with revised internal logic designed to optimize efficiency. |
The summaries are NHTSA's. Each bulletin's page links NHTSA's copy of the manufacturer's document.