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Service bulletins for the 2025 Subaru Ascent

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.

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

By type

By component

By trouble code

Bulletins, newest first
12-252-23R2025-11-04. Service bulletin. ELECTRICAL SYSTEM; SEATS. This bulletin announces the availability of new seat ventilation blower units which have been redesigned to address some cases of a vibration-type sound emitting from the blower unit during seat ventilation operation.
15-305-22R2025-11-04. Service bulletin. ELECTRICAL SYSTEM. This bulletin announces reprogramming file availability and provides a software update installation procedure to optimize the new Gen 4.5 Denso CP1.5 Audio and Navigation head units utilized in the models listed.
15-311-23R2025-11-04. Service bulletin. ELECTRICAL SYSTEM. This bulletin provides instruction for use of a new reprogramming procedure to optimize the Denso Gen 4.5 Audio and Navigation system utilized in the models listed.
15-219-18R2025-10-02. Service bulletin. ELECTRICAL SYSTEM. This bulletin addresses cases when attempting to complete the STARLINK Telematics subscription process, an Error Code 202 and / or 204 may occur preventing the process from completing successfully.
OTA Software Update (10032025-10-02. Other. ELECTRICAL SYSTEM. This OTA is an software update to provide audio improvements for the models listed.
15-305-22R2025-10-02. Service bulletin. ELECTRICAL SYSTEM. The following information announces reprogramming file availability and provides a software update installation procedure to optimize the new Gen 4.5 Denso CP1.5 Audio and Navigation head units utilized in the models listed.
10-105-25R2025-10-02. 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.
07-233-252025-10-02. Service bulletin. ELECTRICAL SYSTEM. This Bulletin provides details on a new formal testing, charging, and tracking procedure for all 12-volt batteries in new vehicle inventory wjhich must be tested and reported every 30 days.
16-154-252025-10-02. Service bulletin. POWER TRAIN. This Bulletin announces the release of a new diagnostic assistance application for TR690 CVT-equipped vehicles.
15-266-20R2025-09-02. Service bulletin. ELECTRICAL SYSTEM. This Bulletin provides helpful procedures and best practices to utilize when customers present with concerns relating to the operation of their Gen 2/Gen 3 Telematics system equipped Subaru.
15-320-24R2025-09-02. Service bulletin. ELECTRICAL SYSTEM. This bulletin contains illustrations of exchange components and their manufacturer as well as a description of the proper exchange procedure.
SubaruNet Announcement2025-09-02. Other. ELECTRICAL SYSTEM. Subaru of America, Inc. will release an OTA to perform a software update to the DCM. This is a preventive OTA.
Subaru Service Technical2025-09-02. Other. ENGINE; ELECTRICAL SYSTEM; POWER TRAIN. Subaru Service Technical Support Newsletter special edition.
13-108-252025-09-02. Service bulletin. STRUCTURE:BODY. This bulletin provides information on paint codes for vehicles in the 2026 line up.
06-96-252025-09-02. Service bulletin. ELECTRICAL SYSTEM; SERVICE BRAKES. This bulletin announces the availability of reprogramming files for the HYDRAULIC UNIT ASSEMBLY(VDC). This logic was developed to address the following Diagnostic Trouble Code (DTC): C1411 ELECTRICAL CONTROL MODULE. If DTC C1411 is detected with a 30A2 failure detail code by the VDC perform the reprogramming procedure outlined.
15-327-252025-09-02. Service bulletin. ELECTRICAL SYSTEM. This bulletin announces the availability of reprogramming files designed to improve the functionality of the Keyless Access Control Unit.
17-21-252025-09-02. Service bulletin. SEAT BELTS. This Bulletin announces the availability of a new part Extender Belt. This is for customers who find it necessary to increase the length of their seat belt.
09-136-25R2025-09-02. Service bulletin. ENGINE; ELECTRICAL SYSTEM. This bulletin announces the availability of reprogramming files for the Engine Control Module (ECM) to address the following Diagnostic Trouble Code (DTC): P062F - Internal Control Module EEPROM Error.
SubaruNet Announcement2025-08-04. Other. ELECTRICAL SYSTEM. This OTA is released to address Telematic functions that may stop working after a certain amount of time from the vehicle's production.
09-136-25R2025-08-04. Service bulletin. ENGINE; ELECTRICAL SYSTEM. This bulletin announces the availability of reprogramming files for the Engine Control Module (ECM). This logic was developed to address the following Diagnostic Trouble Code (DTC): P062F - Internal Control Module EEPROM Error.
10-105-25R2025-08-04. 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. To improve Fixed Right First-Time (FRFT) and customer satisfaction, SOA is introducing a new procedure and fail code for first-time suspected A/C refrigerant leaks for cases when a Technician is unable to find the source of the leak or believes there was a potential factory under charge of the A/C system refrigerant."
06-95-25R2025-08-04. Service bulletin. SERVICE BRAKES; ELECTRICAL SYSTEM. This bulletin announces the availability of new reprogramming files developed to address cases of DTC C1C40 being detected by the Electronic Brake Booster (EBB) in addition to Failure Detail Code 30A2 stored within the Freeze Frame Data (FFD).
12-268-252025-08-04. Service bulletin. VISIBILITY/WIPER. This bulletin announces a repair procedure developed to address cases of the driver side mirror glass vibrating at highway speeds.
SubaruNet Annoucement2025-07-01. Other. UNKNOWN OR OTHER. This announcment provides information on the release of the latest software updates to the Subaru Midtronics DSS-5000 Battery Diagnostic tool.
SubaruNet Announcement (S2025-07-01. Other. UNKNOWN OR OTHER. This announcement is to bring attention to the OTA for In-vehicle service appointment scheduler and In-vehicle message center.

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