WenmarOpen by Wenmar Pro

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
06-92-24R2026-04-02. 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.
15-219-18R2026-04-02. Service bulletin. ELECTRICAL SYSTEM. This bulletin contains information to help when attempting to complete the STARLINK Telematics subscription process, an Error Code 202 and / or 204 may occur preventing the process from completing successfully
SubaruNet Announcement (A2026-04-02. Other. ELECTRICAL SYSTEM. This announcement provides information on the use of aftermarket services or tools for programming immobilizer keys/fobs.
10-105-25R2026-04-02. 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.
01-167-08R2026-04-02. Service bulletin. UNKNOWN OR OTHER. This bulletin contains additional information for recommended materials listed in the Service Manuals for individual models.
07-240-26R2026-03-03. Service bulletin. ELECTRICAL SYSTEM. This Service Information Bulletin was developed to provide interim guidance for 2026 model year vehicles exhibiting DTC B2A20 with gen 4 Telematics.
06-95-25R2026-03-03. Service bulletin. 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).
10-105-25R2026-03-03. 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.
15-305-22R2026-02-02. 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.
Subaru Tech Tips Special2026-02-02. Service bulletin. ELECTRICAL SYSTEM. This Subaru service and technical support line newsletter provides information on the next phase of TechShare.
15-300-22R2026-02-02. Service bulletin. ELECTRICAL SYSTEM; ENGINE. This Bulletin provides the diagnostic procedure for the STARLINK® Remote Engine Start (RES).
Subarunet Announcement (E2026-02-02. Other. UNKNOWN OR OTHER. This announcement has been created to address difficulties with software updates on Subaru Select Monitors with DST-010 interface firmware has been updated.
15-246-19R2026-02-02. Service bulletin. ELECTRICAL SYSTEM. This Service Information Bulletin outlines a new required procedure to follow when performing immobilizer-related repairs on the vehicles listed.
15-246-19R2026-01-06. Service bulletin. ENGINE; ELECTRICAL SYSTEM. This Service Information Bulletin outlines a new required procedure to follow when performing immobilizer-related repairs on models listed.
09-74-21R2026-01-06. 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).
18-226-25R2026-01-06. Service bulletin. ELECTRICAL SYSTEM; ENGINE. This Service Information Bulletin provides the Service Manual Correction to the diagnostic procedure for DTC B2A16 (Immobilizer Key Collation Diagnosis).
05-95-252026-01-06. Service bulletin. SUSPENSION. This bulletin announces availability of new front wheel hub assemblies incorporating bearing surfaces having increased resistance to imperfections resulting from shock loads.
18-228-25R2026-01-06. Service bulletin. ENGINE; FUEL/PROPULSION SYSTEM; ELECTRICAL SYSTEM. This bulletin announces the diagnostic procedures to be used when DTCs P2096 (POST CATALYST FUEL TRIM SYSTEM TOO LEAN BANK 1) and P2097 (POST CATALYST FUEL TRIM SYSTEM TOO RICH BANK 1) are detected by the Engine Control Module (ECM).
15-333-252026-01-06. Service bulletin. ELECTRICAL SYSTEM. This bulletin contains illustrations of exchange components and their manufacturer as well as a description of the proper exchange procedure.
Subaru Tech Tips (Article2025-12-01. Other. UNKNOWN OR OTHER. Subaru service article locator.
18-228-252025-12-01. Service bulletin. ENGINE; ELECTRICAL SYSTEM. This bulletin announces the diagnostic procedures to be used when DTCs P2096 (POST CATALYST FUEL TRIM SYSTEM TOO LEAN BANK 1) and P2097 (POST CATALYST FUEL TRIM SYSTEM TOO RICH BANK 1) are detected by the Engine Control Module (ECM).
Subaru Tech Tips (Article2025-12-01. Other. UNKNOWN OR OTHER. Subaru service article locator.
15-305-22R2025-12-01. Service bulletin. ELECTRICAL SYSTEM. This bulletin announces reprogramming file that 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.
07-213-22R2025-12-01. Service bulletin. ELECTRICAL SYSTEM. This bulletin announces a new Genuine Subaru Replacement battery for use in applications where the current SOA821B700 battery is specified.
15-308-23R2025-11-04. Service bulletin. ELECTRICAL SYSTEM. This Service Information Bulletin outlines a systematic procedure for diagnosing parasitic draw (dark/standby current) in vehicles experiencing battery drain when the ignition is off, leading to no-start conditions or frequent jump-starts.

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