Service bulletins for the 2020 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.
530 on file from NHTSA, as of 2026-10-19.
By type
By component
By trouble code
By topic
| SubaruNet Annoucement | 2025-07-01. 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. |
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| SubaruNet Announcement (S | 2025-07-01. Other. UNKNOWN OR OTHER. This announcement is to bring attention to the OTA for In-vehicle service appointment scheduler and In-vehicle message center. |
| 10-105-25R | 2025-07-01. 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. |
| 15-236-18R | 2025-07-01. Service bulletin. ELECTRICAL SYSTEM. The following information addresses reprogramming file availability and a software update installation procedure to provide optimization to the new Harman Gen 3.1 Audio and Navigation head units utilized in the models as listed |
| 15-251-19R | 2025-07-01. Service bulletin. ELECTRICAL SYSTEM. This Bulletin provides additional diagnostics to follow when addressing a Telematics-related DTC B2A16. |
| 02-193-24R | 2025-06-03. 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). |
| 15-322-25R | 2025-06-03. Service bulletin. ELECTRICAL SYSTEM. In the interest of customer satisfaction, Subaru of America, Inc. (SOA) is extending the New Car Limited Warranty coverage for the CP1 & Gen 3.1 Head Unit used in the listed models and model years to (8) eight years / 150,000 miles to cover certain qualifying repairs to the infotainment audio system. |
| 01-168-09R | 2025-06-03. 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. |
| 06-92-24R | 2025-06-03. 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. |
| 10-104-25 | 2025-06-03. Service bulletin. UNKNOWN OR OTHER. This bulletin announces a design change to the knob of the center air vent grilles. |
| 12-240-22R | 2025-06-03. Service bulletin. AIR BAGS; ELECTRICAL SYSTEM. This bulletin announces the repair procedures for the left and right-side horns to address DTC B1610 (Front Sub Sensor RH Failure) detected when the horns are operated shortly after engine start up. |
| 10-105-25R | 2025-06-03. 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. |
| 15-251-19R | 2025-05-02. Service bulletin. ELECTRICAL SYSTEM. This Service Bulletin provides additional diagnostics to follow when addressing a Telematics-related DTC B2A16. |
| 07-189-21R | 2025-05-02. 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. |
| 12-267-25 | 2025-05-01. Service bulletin. STRUCTURE:BODY. This bulletin announces a design change to the hood lock switch portion of the hood lock assembly. |
| 02-192-24R | 2025-05-01. Service bulletin. ENGINE. This Bulletin announces the diagnostic procedures to be followed when diagnosing engine oil leakage on FA and FB type engines. |
| 12-300-20R | 2025-05-01. Service bulletin. UNKNOWN OR OTHER. This bulletin announces design changes made to the trim cover for the rear gate PRG control switches located on the bottom of the rear gate inner trim panel. |
| 03-96-25 | 2025-05-01. Service bulletin. SUSPENSION; POWER TRAIN. This bulletin announces design changes made to the rear axle hubs. These changes have been implemented to reduce cases water intrusion further leading to harmonic, humming, and grinding type sounds heard from the axle hub while driving. |
| 02-193-24R | 2025-05-01. 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). |
| 14-31-25 | 2025-04-01. Service bulletin. UNKNOWN OR OTHER. This Bulletin announces availability of a User Guide and an informative video to supplement the recent releases to retailers of the SOA321152 and SOA321153 Terminal Test Kits. |
| 15-322-25R | 2025-04-01. Service bulletin. ELECTRICAL SYSTEM. In the interest of customer satisfaction, Subaru of America, Inc. (SOA) is extending the New Car Limited Warranty coverage for the CP1 & Gen 3.1 Head Unit used in the above listed models and model years to (8) eight years / 150,000 miles to cover certain qualifying repairs to the infotainment audio system. |
| 12-265-25 | 2025-04-01. 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. |
| SubaruNet Announcement | 2025-04-01. Service bulletin. VISIBILITY/WIPER. This announcement is in regard to the warranty extension initiated for windshields for the models listed. |
| 09-51-08R | 2025-04-01. Service bulletin. ENGINE. The purpose of this bulletin is to advise of SOA’s revised Catalytic Converter Recycling Program shipping procedure. |
| 12-257-25R | 2025-04-01. Service bulletin. VISIBILITY/WIPER. In the interest of customer satisfaction, Subaru of America, Inc. (SOA) is extending the New Car Limited Warranty coverage for the Front Windshield used in the above listed models and model years from three (3) years / 36,000 miles to eight (8) years / 100,000 miles (whichever comes first). If a customer experiences windshield damage, inspect the damage as per the guidelines supplied in this bulletin to confirm if the damage is covered under the Warranty Extension. |
The summaries are NHTSA's. Each bulletin's page links NHTSA's copy of the manufacturer's document.