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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

Only bulletins with component: Electrical system are shown. Show all

Bulletins, newest first
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.
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.
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.
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).
15-246-19R2025-08-04. Service bulletin. ENGINE; ELECTRICAL SYSTEM. This Bulletin outlines a new required procedure to follow when performing immobilizer-related repairs.
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.
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.
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).
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.
12-265-252025-04-01. 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.
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.

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