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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

Bulletins, newest first
07-155-19R2020-06-02. Service bulletin. LATCHES/LOCKS/LINKAGES; STRUCTURE:BODY:TAILGATE; ELECTRICAL SYSTEM. This bulletin announces a design change made to the PRG control module.
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.
15-249-19R2020-05-04. Service bulletin. ELECTRICAL SYSTEM. This bulletin contains illustrations of exchange components and their manufacturer as well as a description of the proper exchange procedure.
Subaru Tech Tips2020-05-04. Service bulletin. ELECTRICAL SYSTEM. Subaru's QMR of the month winner.
15-219-18R2020-05-04. Service bulletin. ELECTRICAL SYSTEM. This bulletin is designed to address an error code 202 and/or 204 when attempting to complete the STARLINK Telematics subscription process.
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.
16-128-202020-05-04. Service bulletin. POWER TRAIN; ELECTRICAL SYSTEM. This bulletin announces availability of a new transmission harness for use when diagnosis of DTC P0842 - TRANSMISSION FLUID PRESSURE SENSOR/ SWITCH "A" CIRCUIT LOW.
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.
07-173-202020-04-02. Service bulletin. STRUCTURE:BODY:HATCHBACK/LIFTGATE; ELECTRICAL SYSTEM; LATCHES/LOCKS/LINKAGES. This Service Information Bulletin provides insight on how to address a customer concern of the rear hatch, Power Rear Gate (PRG) or trunk release operating (or finding the PRG/trunk open unexpectedly after parking) without a specific input (button press) from the operator.
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.
15-130-08R2020-03-03. Service bulletin. EQUIPMENT. This bulletin details an important regulation issued by the National Highway Traffic Safety Administration (NHTSA) which impacts the way some vehicles with accessories are sold. This regulation applies to any automobile retailer installing accessories on a vehicle prior to its first sale.
15-260-202020-03-03. Service bulletin. EQUIPMENT; ELECTRICAL SYSTEM. This bulletin describes two operational concerns and the repair method for addressing them on the Harman Gen 3.1 Display Audio (Mid) and Navigation -equipped (High) head units.
15-236-18R2020-03-03. 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.
12-281-202020-03-02. Service bulletin. STRUCTURE. This bulletin provides a repair procedure to address a small number of customer concerns of the hood panel surface vibrating while driving. This condition can result if the mastic (adhesive) used to bond the inner hood reinforcing panel to the outer panel (skin) begins to separate.
11-195-202020-02-05. Service bulletin. ENGINE AND ENGINE COOLING. This bulletin announces availability of a new vacuum hose assembly for the positive crankcase ventilation (PCV) system incorporating improved sealing to prevent potential oil seepage.
15-256-19R2020-02-05. Service bulletin. ELECTRICAL SYSTEM; EQUIPMENT. This bulletin provides information on a new reprogramming procedure (FOTA) to optimize the Harman Gen 3.1 Audio and Navigation head units (H/U).
15-255-19R2020-02-05. Service bulletin. ELECTRICAL SYSTEM; EQUIPMENT. The first TomTom map update for Gen 3.1 Harman navigation equipped vehicles was made available.
17-17-13R2020-02-05. Service bulletin. AIR BAGS; EQUIPMENT; ELECTRICAL SYSTEM; EQUIPMENT ADAPTIVE/MOBILITY. This Bulletin provides information regarding Event Data Recorder (EDR) functionality which has been incorporated into the airbag system.
07-165-20R2020-02-05. Service bulletin. EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL; ELECTRICAL SYSTEM; FORWARD COLLISION AVOIDANCE. This Service Information Bulletin describes how to proceed when doing EyeSight (Version 3) system diagnosis.

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