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
| SubaruNet Announcement | 2024-10-02. Other. ELECTRICAL SYSTEM. The CP1.5 RCs OTA is available for all mid and high grade CP1.5 head units. |
|---|---|
| 12-254-24 | 2024-10-02. Service bulletin. STRUCTURE:BODY; VISIBILITY/WIPER. This bulletin announces the design change made to the rear gate glass, it is intended to address cases of rust build up along the edge of the rear gate opening of the rear quarter panel. |
| 07-211-23 | 2024-10-02. Service bulletin. ELECTRICAL SYSTEM; FORWARD COLLISION AVOIDANCE: WARNINGS; LANE DEPARTURE: ASSIST; LANE DEPARTURE: WARNING. This Bulletin provides the printable target chart needed to perform the wide angle mono camera adjustment procedure for the EyeSight system. |
| 02-191-22R | 2024-10-02. Service bulletin. ENGINE. This bulletin announces availability of the NEW genuine Subaru engine oil filter. |
| 16-150-24 | 2024-10-02. Service bulletin. ELECTRICAL SYSTEM; POWER TRAIN; ENGINE. This bulletin announces availability of new reprogramming files developed to address of a a jerk or judder sensation felt from the powertrain during braking with air conditioning on, or a shudder felt from the powertrain along with a screeching type of sound. |
| 03-94-24 | 2024-10-02. Service bulletin. SUSPENSION. This bulletin outlines the judgment criteria to be used when inspecting front transverse link bushings to reduce unnecessary bushing replacement. |
| 15-320-24 | 2024-09-04. Service bulletin. ELECTRICAL SYSTEM. This bulletin contains illustrations of exchange components and their manufacturer as well as a description of the proper exchange procedure for 2025MY vehicles. |
| 01-168-09R | 2024-09-04. Service bulletin. ELECTRICAL SYSTEM; ENGINE. The purpose of this bulletin is to provide replacement key and immobilizer information along with an overview of the Subaru Lock Information web-site. |
| 15-308-23R | 2024-09-04. Service bulletin. ELECTRICAL SYSTEM. This Service Information Bulletin announces important diagnostic information to utilize when the Data Communication Module (DCM) is being tested as a dark current/standby current source. |
| 15-251-19R | 2024-09-04. Service bulletin. ELECTRICAL SYSTEM. This Bulletin provides additional diagnostics to follow when addressing a Telematics-related DTC B2A16. |
| Subarunet Announcement | 2024-08-05. Other. SERVICE BRAKES. This announcement provides information on a warranty extension for Ascent front brake judder/squeak on certain 2019 to 2024 model year vehicles manufactured prior to January 11th 2024. |
| 06-92-24 | 2024-08-05. Service bulletin. SERVICE BRAKES. This bulletin is 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). |
| Subarunet Announcement | 2024-08-05. Other. POWER TRAIN. This annoucement provides parts personnel information about remanufactured transmissions that will no longer be available. |
| 15-305-22R | 2024-08-05. 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. |
| 09-74-21R | 2024-08-05. Service bulletin. ENGINE; FUEL/PROPULSION SYSTEM. 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). |
| Subarunet Announcement | 2024-08-05. Other. ELECTRICAL SYSTEM. This announcement provides information for retailers to install the latest infotainment system software for Denso CP 1.5. |
| 15-308-23R | 2024-08-05. Service bulletin. ELECTRICAL SYSTEM. This bulletin announces important diagnostic information to utilize when testing the Data Communication Module (DCM) as a dark current/standby current source. All models equipped with Telematics except Solterra. |
| Subarunet Announcement | 2024-08-05. Other. AIR BAGS; ELECTRICAL SYSTEM. This announcement provides information on Takata Recall Escalated Towing Program. |
| Thermo Control Valve Vide | 2024-08-05. Other. ENGINE. This thermo control valve video contains information on the replacement of thermo control valve. |
| 13-107-24 | 2024-08-05. Service bulletin. UNKNOWN OR OTHER. This Bulletin provides SOA paint codes to help eliminate possible confusion for 2025 MY vehicles. |
| 07-213-22R | 2024-08-05. Service bulletin. ELECTRICAL SYSTEM. "This bulletin announces a new Genuine Subaru Replacement battery for use in applications where the current SOA821B700 battery is specified." |
| 01-167-08R | 2024-08-05. Service bulletin. UNKNOWN OR OTHER. This bulletin contains additional information for recommended materials listed in the Service Manuals for individual models. |
| 05-91-24 | 2024-08-05. Service bulletin. SUSPENSION. This Bulletin provides guidance for diagnosing a leaking front or rear suspension strut. |
| 14-28-21R | 2024-08-05. Service bulletin. ENGINE; ELECTRICAL SYSTEM. This Service Information Bulletin announces the new control module software reprogramming procedures. |
| SubaruNet Announcement | 2024-07-01. 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. |
The summaries are NHTSA's. Each bulletin's page links NHTSA's copy of the manufacturer's document.