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Service bulletins for the 2019 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.

638 on file from NHTSA, as of 2026-10-19.

By type

By component

By trouble code

By topic

Bulletins, newest first
15-236-18R2021-08-05. 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.
07-199-212021-08-05. Service bulletin. ELECTRICAL SYSTEM. This bulletin provides additional information for the diagnostic procedures concerning measurement of Dark Current (a.k.a. Standby Current).
18-212-212021-08-05. 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.
16-132-20R2021-08-04. Service bulletin. POWER TRAIN. Diagnostic Information for Alleged Chain Slip Condition on TR580 / TR690 Transmissions.
15-236-18R2021-07-03. 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.
09-74-21R2021-07-03. Service bulletin. ENGINE AND ENGINE COOLING. 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).
16-131-20R2021-07-03. Service bulletin. POWER TRAIN. This bulletin provides corrected diagnostics containing a revised flow for certain CVT solenoid related DTCs.
01-167-08R2021-07-03. Service bulletin. ELECTRICAL SYSTEM; EQUIPMENT. This bulletin contains additional information for recommended materials listed in the Service Manuals for individual models
TechTips2021-07-03. Service bulletin. EQUIPMENT; ELECTRONIC STABILITY CONTROL:AUTOMATIC (ASC); ELECTRICAL SYSTEM; ENGINE AND ENGINE COOLING. Subaru Service and technical support line newletter QMR of the Month.
09-51-08R2021-07-03. Service bulletin. ENGINE AND ENGINE COOLING; EQUIPMENT. This bulletin is to advise of SOA’s revised catalytic converter recycling program shipping procedure.
07-195-212021-07-03. Service bulletin. LATCHES/LOCKS/LINKAGES; ELECTRICAL SYSTEM. This bulletin outlines changes in the service procedure for replacement of the Power Rear Gate control module.
02-187-212021-07-02. Service bulletin. ENGINE AND ENGINE COOLING. This bulletin outlines changes in the service procedure for engine oil pressure inspection.
02-186-212021-06-03. Service bulletin. ENGINE AND ENGINE COOLING. This bulletin outlines changes in the service procedure for scavenge pump assembly installation.
09-74-21R2021-06-02. Service bulletin. ENGINE AND ENGINE COOLING. This bulletin provides updated parts information and a service procedure to follow for removing accumulated carbon deposits from fuel injectors and internal engine components.
18-208-212021-06-02. Service bulletin. EQUIPMENT. Description of current changes to Service Manuals available via the Subaru Technical Information System (STIS) web site.
12-319-212021-05-05. Service bulletin. STRUCTURE. This bulletin announces design changes made to the front and rear door glass run channels.
05-85-21R2021-05-05. Service bulletin. ELECTRICAL SYSTEM; WHEELS. This bulletin announces a design change made to the TPMS valve assemblies.
15-282-21R2021-05-04. Service bulletin. ELECTRICAL SYSTEM. This bulletin provides additional procedures and a detailed flow chart to use when diagnosing customer concerns regarding operation of the STARLINK RES feature.
15-240-19R2021-05-04. Service bulletin. EQUIPMENT. This bulletin announces availability of new audio unit amplifier units with revised internal logic designed to optimize efficiency.
12-300-20R2021-05-04. Service bulletin. STRUCTURE. This bulletin announces design changes made to the trim cover for the PRG control switches located on the bottom of the rear gate inner trim panel.
12-316-212021-05-04. Service bulletin. STRUCTURE. This bulletin announces changes made to the rear door weatherstrip to optimize sealing performance.
Subarunet Announ2021-04-02. Service bulletin. ELECTRICAL SYSTEM. In January 2021, the replacement battery application for all Ascent and 2017- 2021 Impreza models were changed from part number SOA821B200 to part number SOA821B600.
05-84-212021-03-04. Service bulletin. EQUIPMENT. This bulletin announces availability of new front wheel hub assemblies incorporating bearing surfaces having increased resistance to imperfections resulting from shock loads.
Subarunet Announ2021-03-04. Service bulletin. ELECTRICAL SYSTEM. SOA821B600 Battery Supersession
14-27-212021-03-04. Service bulletin. ENGINE; EQUIPMENT. This bulletin announces the upcoming issuance to all retailers of an essential tool update kit for the Engine Support Assembly Kit #J-50135-A.

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