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Service bulletins for the 2023 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.

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

By type

By component

By trouble code

Only bulletins with component: Electrical system are shown. Show all

Bulletins, newest first
15-236-18R2024-08-05. Service bulletin. ELECTRICAL SYSTEM. This 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.
09-125-242024-08-05. Service bulletin. ELECTRICAL SYSTEM; ENGINE. This bulletin announces the availability of new reprogramming files for the Engine Control Module (ECM), to address concerns of the starter motor not operating.
09-120-242024-08-05. Service bulletin. ENGINE; ELECTRICAL SYSTEM. "This bulletin announces availability of new reprograming files for the Engine Control Module (ECM) developed to remedy the following DTCs: P0016, P0017, P0018, P0019, P0087."
SubaruNet Announcement2024-07-01. Other. ELECTRICAL SYSTEM. This 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.
15-246-19R2024-07-01. Service bulletin. ENGINE; ELECTRICAL SYSTEM. This Bulletin outlines a new required procedure to follow when performing immobilizer-related repairs.
07-221-23R2024-07-01. Service bulletin. ELECTRICAL SYSTEM. This bulletin announces the repair procedures when corrosion is encountered within the instrument panel wiring harness and the rear wiring harness connectors.
07-218-23R2024-07-01. Service bulletin. ELECTRICAL SYSTEM; ENGINE. This bulletin announces availability of a new Genuine Subaru Alternative Replacement Battery introduced to satisfy current supply demands. The alternative replacement battery has a higher capacity and is slightly larger in size.
15-319-242024-06-04. Service bulletin. ELECTRICAL SYSTEM; ENGINE. This bulletin announces the diagnostic procedures to be followed when encountering cases of the Remote Engine Start (RES) system being the only non-functioning feature with telematics.
09-115-242024-06-04. Service bulletin. ELECTRICAL SYSTEM; ENGINE. This bulletin announces the availability of new oxygen sensors developed to address the following Diagnostic Trouble Codes (DTCs); P0137 (O2 Sensor Circuit Low Voltage Bank 1 Sensor 2, P0138 (O2 Sensor Circuit High Voltage Bank 1 Sensor 2) P0140 (O2 Sensor Circuit No Activity Detected Bank 1 Sensor 2), and P0141 (O2 Sensor Heater Circuit Bank 1 Sensor 2).
09-122-242024-06-04. Service bulletin. ELECTRICAL SYSTEM; FUEL/PROPULSION SYSTEM; ENGINE. This bulletin the announces diagnostic procedures and availability of new Engine Control Module (ECM) reprogramming files to address DTC P2404 (Evap System Leak Detection Pump Sense Circuit Range/Performance) detection.
12-253-23R2024-05-02. Service bulletin. ELECTRICAL SYSTEM; EQUIPMENT; FORWARD COLLISION AVOIDANCE; LANE DEPARTURE. This bulletin announces the availability of new reprogramming files developed to address cases were a halt code E5 and or DTC b28C7 is detected by the EyeSight Stereo Camera assembly.
07-218-23R2024-04-03. Service bulletin. ELECTRICAL SYSTEM; EQUIPMENT. To satisfy current supply demands, a new Subaru alternative replacement battery is now available.
15-256-19R2024-04-03. Service bulletin. ELECTRICAL SYSTEM; EQUIPMENT. This bulletin provides information on a new reprogramming procedure (FOTA) to optimize the Harman Gen 3.1 Audio and Navigation head units (H/U) utilized in the models as listed.
15-236-18R2024-04-03. Service bulletin. EQUIPMENT; ELECTRICAL SYSTEM. This 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.
15-257-19R2024-04-03. Service bulletin. EQUIPMENT; ELECTRICAL SYSTEM. "This Bulletin provides insight in response to both customer and retailer feedback resulting from the use of OBD-II port connected devices. These devices are often employed by insurance companies to monitor driver activity for premium calculations, and can cause DTC B2A15, a red telematics MIL to illuminate, or recurring STARLINK notification to retailers and emails to customers. "
15-303-22R2024-04-03. Service bulletin. EQUIPMENT; ELECTRICAL SYSTEM. This bulletin provides information for all Gen 3 Telematics and Cp 1.5 infotainment equipped vehicles, starting with 2023MY, allowing access to valet mode through the head unit.
12-253-23R2024-04-03. Service bulletin. ELECTRICAL SYSTEM; FORWARD COLLISION AVOIDANCE; EQUIPMENT. This bulletin addresses two symptoms related to EyeSight. The first to address 2022 and 2023 model year Foresters with DTC B28C7, for the camera being exposed to high humidity/temperature conditions without operation. The cooling fans may become inoperable. The second will address 2022-2024 modle year Foresters with a temporary halt mode with an E5 halt code.
15-219-18R2024-04-03. Service bulletin. EQUIPMENT; ELECTRICAL SYSTEM. This bulletin addresses an error code 202 and or 204 when attempting to complete the STARLINK telematics subsription process.
18-225-22R2024-04-02. Service bulletin. ELECTRICAL SYSTEM; EQUIPMENT; EQUIPMENT:ELECTRICAL:INFOTAINMENT. This bulletin provides the diagnostic procedure for Harman Infotainment Systems when DTC B2255 is detected. This update should prevent unnecessary replacement of the head unit or USB cable.
15-251-19R2024-02-02. Service bulletin. EQUIPMENT; ELECTRICAL SYSTEM. This Service Bulletin provides additional diagnostics to follow when addressing a Telematics-related DTC B2A16.
15-256-19R2024-02-02. Service bulletin. ELECTRICAL SYSTEM; EQUIPMENT; EQUIPMENT:ELECTRICAL:NAVIGATIONAL SYSTEM(GLOBAL POSITIONING SYSTEM); EQUIPMENT:ELECTRICAL:RADIO/TAPE DECK/CD ETC.. This bulletin provides information on a new reprogramming procedure (FOTA) to optimize the Harman Gen 3.1 Audio and Navigation head units (H/U) utilized in the models as listed.
15-246-19R2024-02-02. Service bulletin. ELECTRICAL SYSTEM; EQUIPMENT; ELECTRICAL SYSTEM:IGNITION:ANTI-THEFT:IMMOBILIZER/PROXIMITY:SENSOR. This Service Information Bulletin outlines a new required procedure to follow when performing immobilizer-related repairs.
12-253-232024-01-03. Service bulletin. ELECTRICAL SYSTEM; EQUIPMENT; FORWARD COLLISION AVOIDANCE. This bulletin announces the availability of new reprogramming files developed to address two symptoms: Cooling fans inoperable with EyeSight camera exposed to high humidity/temperature conditions; Temporary halt mode detected by the EyeSight system.
07-218-23R2024-01-03. Service bulletin. EQUIPMENT; ELECTRICAL SYSTEM:12V/24V/48V BATTERY; ELECTRICAL SYSTEM. This bulletin announces availability of a new Genuine Subaru Alternative Replacement Battery introduced to satisfy current supply demands.
09-104-23R2024-01-03. Service bulletin. ELECTRICAL SYSTEM; ENGINE AND ENGINE COOLING; EQUIPMENT. This bulletin announces availability of reprogramming files for the Engine Control Module (ECM) to address rare cases of DTCs P0011 (“A” Camshaft Position – Timing Over-Advanced or System Performance Bank 1) and P0021 (“A” Camshaft Position – Timing Over-Advanced or System Performance Bank 2) detected by the ECM.

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