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Service bulletins for the 2024 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.

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

By type

By component

By trouble code

Bulletins, newest first
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.
12-258-25R2025-09-02. Service bulletin. STRUCTURE:BODY. This bulletin provides additional examples, diagnostics tips and installation tips as helpful aids to be used when working with sunroof seals and sunroof frame assemblies on Ascent models.
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.
15-246-19R2025-08-04. Service bulletin. ENGINE; ELECTRICAL SYSTEM. This Bulletin outlines a new required procedure to follow when performing immobilizer-related repairs.
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.
15-246-19R2025-07-01. Service bulletin. ELECTRICAL SYSTEM; ENGINE. This Service Information Bulletin outlines a new required procedure to follow when performing immobilizer-related repairs on the models listed.
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.
10-105-25R2025-07-01. Service bulletin. ELECTRICAL SYSTEM. This Service Information 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.
15-251-19R2025-07-01. Service bulletin. ELECTRICAL SYSTEM. This Bulletin provides additional diagnostics to follow when addressing a Telematics-related DTC B2A16.
09-136-25R2025-06-03. 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. If DTC P062F is detected by the ECM, perform the reprogramming procedure outlined in this bulletin.
02-193-24R2025-06-03. Service bulletin. FUEL/PROPULSION SYSTEM; ENGINE. 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).
06-95-252025-06-03. Service bulletin. ELECTRICAL SYSTEM; SERVICE BRAKES. 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).
01-168-09R2025-06-03. Service bulletin. UNKNOWN OR OTHER. The purpose of this bulletin is to provide replacement key and immobilizer information along with an overview of the Subaru Lock Information web-site.
06-92-24R2025-06-03. Service bulletin. SERVICE BRAKES. In the interest of customer satisfaction, Subaru of America, Inc. (SOA) is extending the New Car Limited Warranty coverage for the front brake on 2019-24 model year Ascent models to 8 years (96 months) or 150,000 miles (whichever comes first) to address cases of front brake pulsation or squealing.
10-104-252025-06-03. Service bulletin. UNKNOWN OR OTHER. This bulletin announces a design change to the knob of the center air vent grilles.
10-105-25R2025-06-03. 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.
15-251-19R2025-05-02. Service bulletin. ELECTRICAL SYSTEM. This Service Bulletin provides additional diagnostics to follow when addressing a Telematics-related DTC B2A16.
07-189-21R2025-05-02. Service bulletin. ELECTRICAL SYSTEM; STRUCTURE:BODY. This bulletin announces availability of new door window regulator assemblies and door glass run channel seals in response to limited concerns of erratic operation of the anti-entrapment feature and / or the door glass either not closing or closing very slowly.
12-267-252025-05-01. Service bulletin. STRUCTURE:BODY. This bulletin announces a design change to the hood lock switch portion of the hood lock assembly.

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