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Service bulletins for the 2023 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.

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

By type

By component

By trouble code

Bulletins, newest first
12-265-252025-04-01. Service bulletin. ELECTRICAL SYSTEM; STRUCTURE:BODY. This bulletin announces design changes made to the Power Rear Gate Drive (PRG) Unit to address concerns of the power rear gate being inoperative.
15-305-22R2025-04-01. 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.
09-51-08R2025-04-01. Service bulletin. ENGINE. The purpose of this bulletin is to advise of SOA’s revised Catalytic Converter Recycling Program shipping procedure.
12-258-252025-04-01. Service bulletin. STRUCTURE:BODY; VISIBILITY/WIPER. 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.
15-324-252025-04-01. Service bulletin. ELECTRICAL SYSTEM. This Service Information Bulletin details a new procedure for conducting a CommCheck on vehicles equipped with a GEN 3/GEN 3+ DCM.
15-304-22R2025-04-01. Service bulletin. ELECTRICAL SYSTEM. This Bulletin has been developed to outline the steps for gathering basic but essential information during diagnosis of Infotainment concerns.
01-167-08R2025-04-01. Service bulletin. UNKNOWN OR OTHER. This bulletin contains additional information for recommended materials listed in the Service Manuals for individual models.
06-92-24R2025-04-01. 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.
15-323-25R2025-04-01. Service bulletin. ELECTRICAL SYSTEM; FUEL/PROPULSION SYSTEM. This bulletin announces availability of new combination meter reprogramming files developed to address cases of inaccurate fuel economy displayed on the Center Information Display (CID).
07-189-21R2025-04-01. Service bulletin. VISIBILITY/WIPER. 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.
12-262-252025-04-01. Service bulletin. STRUCTURE:BODY. This Bulletin announces diagnostic procedures to be followed when working with a Power Rear Gate (PRG).
15-219-18R2025-04-01. Service bulletin. ELECTRICAL SYSTEM. When attempting to complete the STARLINK Telematics subscription process, an Error Code 202 and / or 204 may occur preventing the process from completing successfully.
12-260-252025-04-01. Service bulletin. UNKNOWN OR OTHER. This bulletin announces the design change made to the left and right A-Pillar trim panels which will address cases of loose fitment.
07-189-21R2025-03-04. Service bulletin. ELECTRICAL SYSTEM; VISIBILITY/WIPER. 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.
02-193-24R2025-03-04. Service bulletin. 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).
09-130-25R2025-03-04. Service bulletin. ENGINE. This bulletin announces the design change made to the exhaust manifold flange nuts. The material has been changed from a medium carbon steel to stainless steel.
09-130-25R2025-03-04. Service bulletin. ENGINE. This bulletin announces the design change made to the exhaust manifold flange nuts. The material has been changed from a medium carbon steel to stainless steel.
15-251-19R2025-03-04. Service bulletin. ELECTRICAL SYSTEM. "This Service Bulletin provides additional diagnostics to follow when addressing a Telematics-related DTC B2A16."
16-151-24R2025-02-04. Service bulletin. POWER TRAIN. This bulletin provides guidance when diagnosing chain slip, judder, shudder, and hesitation concerns on the TR690 model CVT transmissions used in the models listed.
Subarunet Announcement2025-02-04. Other. UNKNOWN OR OTHER. This announcement is in regard to special service tool shipment will be shipped directly to the Subar retailers during February.
RC5 Head Unit OTA2025-02-04. Other. ELECTRICAL SYSTEM. A head unit OTA will be available via cellular network for Mid and High Grade CP1.5 head units.
15-305-22R2025-02-04. 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.
07-189-21R2025-02-04. Service bulletin. VISIBILITY/WIPER. 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.
11-205-252025-02-04. Service bulletin. FUEL/PROPULSION SYSTEM; ELECTRICAL SYSTEM. This bulletin announces the repair procedures to be followed when DTC P1449 (EVAP System Clog Detected) is detected by the Engine Control Module (ECM).
02-193-242025-01-03. 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).

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