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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

Only bulletins with component: Equipment and accessories are shown. Show all

Bulletins, newest first
15-255-19R2020-12-05. Service bulletin. EQUIPMENT. Map update for Harman Gen 3.1 Navigation Equipped Head Units.
Subaru Tech Tips2020-12-05. Service bulletin. ELECTRICAL SYSTEM; EQUIPMENT; ENGINE AND ENGINE COOLING. Subaru Service and Technical Support Line Newsletter. (QMR of the Month)
12-300-20R2020-12-05. Service bulletin. EQUIPMENT; LATCHES/LOCKS/LINKAGES; STRUCTURE:BODY:HATCHBACK/LIFTGATE. 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.
15-240-19R2020-11-05. Service bulletin. EQUIPMENT; ELECTRICAL SYSTEM. This bulletin announces availability of new Harman audio unit amplifier units with revised internal logic designed to optimize efficiency.
10-19-202020-11-05. Service bulletin. EQUIPMENT. The purpose of this bulletin is to provide a description of current changes to Service Manuals available via the Subaru Technical Information System (STIS) web site.
07-183-202020-11-05. Service bulletin. EQUIPMENT; ELECTRICAL SYSTEM. This Service Information Bulletin provides corrected and updated procedures to follow when replacing the combination meter assembly.
12-302-202020-11-05. Service bulletin. EQUIPMENT ADAPTIVE/MOBILITY; SEATS; EQUIPMENT. This bulletin announces a design change made to the front seat backrest frame assemblies in response to a limited number of customer reports of a squeaking sound heard when leaning back in the front seats.
18-201-202020-11-05. Service bulletin. EQUIPMENT. The purpose of this bulletin is to provide a desription of current changes to service manuals available via the Subaru Technical Information System (STIS) web site.
18-200-202020-10-05. Service bulletin. EQUIPMENT. This bulletin provides a description of current changes to Service Manuals.
15-240-19R2020-10-05. Service bulletin. EQUIPMENT; ELECTRICAL SYSTEM. This bulletin announces availability of new Harman audio unit amplifier units with revised internal logic designed to optimized efficiency.
15-255-19R2020-09-04. Service bulletin. ELECTRICAL SYSTEM; EQUIPMENT. Map Data Update Procedure for Harman Gen 3.1 Navigation Equipped Head Unts (H/U).
14-22-16R2020-09-04. Service bulletin. EQUIPMENT. Special Service Tools Cross Reference List.
15-236-18R2020-08-03. Service bulletin. ELECTRICAL SYSTEM; EQUIPMENT. 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 listed.
15-266-202020-08-03. Service bulletin. EQUIPMENT; ELECTRICAL SYSTEM. This Service Information Bulletin provides helpful procedures and best practices to utilize when customers present with concerns relating to the operation of their Gen 2 Telematics system equipped Subaru.
15-249-19R2020-08-03. Service bulletin. EQUIPMENT:ELECTRICAL:NAVIGATIONAL SYSTEM(GLOBAL POSITIONING SYSTEM); ELECTRICAL SYSTEM. This bulletin contains inllustrations of exchange components and their manufacturer as well as a description of the proper exchange procedure.
01-183-202020-06-02. Service bulletin. EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL. Vehicle repair program for customers affected by the COVID-19 quarantine.
12-288-202020-06-02. Service bulletin. ELECTRICAL SYSTEM; EQUIPMENT:MECHANICAL; SEATS. This bulletin announces a design change made to the Slide Rail components of the left and right front power seat frame / track assemblies used on the models listed.
01-181-202020-05-04. Service bulletin. EQUIPMENT. All Models (Vehicle Cleaning- COVID-19Best Practices)
15-195-16R2020-05-04. Service bulletin. ELECTRICAL SYSTEM; EQUIPMENT. This service information bulletin provides important information regarding diagnosis and replacement (when applicable) of the STARLINK Telematics Data Communication Module (DCM). All models with STARLINK Telematics System.
12-286-202020-05-04. Service bulletin. LATCHES/LOCKS/LINKAGES; EQUIPMENT; STRUCTURE. This bulletin announces a design change made to the front door weatherstrips to prevent interference with the leading edge of the rear doors under certain circumstances.
15-262-202020-04-03. Service bulletin. ELECTRICAL SYSTEM; EQUIPMENT. This service bulletin announces the addition of diagnostics for DTC B224C: RADIO ANTENNA FAULTS to the service manuals of the models listed.
15-249-19R2020-04-02. Service bulletin. ELECTRICAL SYSTEM; EQUIPMENT. This bulletin contains illustrations of exchange components and their manufacturer as well as a description of the proper exchange procedure.
17-17-13R2020-04-02. Service bulletin. AIR BAGS; EQUIPMENT; ELECTRICAL SYSTEM. This bulletin provides information regarding Event Data Recorder (EDR) functionality which has been incorporated into the airbag system.
12-279-20R2020-04-02. Service bulletin. STRUCTURE:BODY:DOOR; EQUIPMENT ADAPTIVE/MOBILITY. This bulletin announces availability of new outer door handles to address isolated concerns of the chrome finish peeling.
18-198-202020-04-02. Service bulletin. EQUIPMENT; ELECTRICAL SYSTEM; ENGINE AND ENGINE COOLING. The purpose of this bulletin is to provide a description of current changes to Service Manuals available via the Subaru Technical Information System (STIS) web site.

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