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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: Electrical system are shown. Show all

Bulletins, newest first
SubaruNet Announ2023-02-06. Service bulletin. ELECTRICAL SYSTEM; EQUIPMENT. UPDATE Safety Recall: WRL-22 PTC Heater Ground Bolt (Owner notification)
SubaruNet Announ2023-01-05. Service bulletin. EQUIPMENT; ELECTRICAL SYSTEM. Service, Parts, and Claim Instructions For detailed service, parts, and claim instructions, please refer to the WRL-22 Product Campaign Bulletin which is now available on STIS.
WRL-222023-01-05. Service bulletin. EQUIPMENT; ELECTRICAL SYSTEM. "Subaru of America, Inc. (Subaru) is initiating a new safety recall for certain 2019-2022 model year Ascent vehicles. (PTC Heater)"
SubaruNet Announ2023-01-05. Service bulletin. ELECTRICAL SYSTEM; EQUIPMENT. Subaru of America, Inc. (Subaru) is initiating a new safety recall for certain 2019-2022 model year Ascent vehicles. (WRL-22)
07-184-20R2022-12-02. Service bulletin. ELECTRICAL SYSTEM. This bulletin announces a design change made to the power window main switches used in the models listed.
15-236-18R2022-12-02. 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 as listed.
15-240-19R2022-12-02. Service bulletin. EQUIPMENT; ELECTRICAL SYSTEM. This bulletin announces availability of new Harman audio unit amplifier units with revised internal logic designed to optimize efficiency while addressin customer concerns.
15-282-21R2022-12-01. Service bulletin. EQUIPMENT; 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.
07-207-22R2022-12-01. Service bulletin. EQUIPMENT; ELECTRICAL SYSTEM. In the interest of customer satisfaction, Subaru of America, Inc. is extending the New Car Basic Warranty coverage for the 12 Volt batteries used in the above listed models and model years beyond the original three (3) years or thirty six thousand miles (36,000), whichever comes first.
07-199-21R2022-12-01. Service bulletin. ELECTRICAL SYSTEM; EQUIPMENT. This Bulletin provides additional information for the diagnostic procedures concerning measurement of Dark Current (a.k.a. Standby Current).
15-251-19R2022-11-03. Service bulletin. EQUIPMENT; ELECTRICAL SYSTEM. This Bulletin provides additional diagnostics to follow when addressing a Telematics-related DTC B2A16.
07-207-22R2022-11-03. Service bulletin. ELECTRICAL SYSTEM. Subaru Battery Drain Product Liability Litigation.
07-178-21R2022-11-03. Service bulletin. EQUIPMENT; ELECTRICAL SYSTEM. This bulletin is being released as guidance for proper testing and charging of vehicle batteries.
07-199-21R2022-11-03. Service bulletin. EQUIPMENT; ELECTRICAL SYSTEM. This Bulletin provides additional information for the diagnostic procedures concerning measurement of Dark Current (a.k.a. Standby Current).
SubaruNet Announ2022-10-04. Service bulletin. ELECTRICAL SYSTEM; ELECTRICAL SYSTEM:12V/24V/48V BATTERY. Battery Class Action Settlement Resources. (2)
SubaruNet Announ2022-10-04. Service bulletin. EQUIPMENT; ELECTRICAL SYSTEM. Battery Drain Class Action Settlement- Warranty Extension Training.
07-207-22R2022-10-04. Service bulletin. ELECTRICAL SYSTEM; EQUIPMENT. This bulletin announces a warranty extension information regarding 12 Volt vehicle batteries.
18-225-22R2022-10-04. Service bulletin. EQUIPMENT; ELECTRICAL SYSTEM. This Service Bulletin is to inform you of the diagnosis procedure of the Harman Infotainment System when DTC B2255 is detected.
SubaruNet Announ2022-09-08. Service bulletin. ELECTRICAL SYSTEM. Announcement to Subaru Retailers regarding the preliminary settlement in a class action lawsuit regarding battery drain in certain Subaru vehicles.
07-199-21R2022-09-08. Service bulletin. LATCHES/LOCKS/LINKAGES; ELECTRICAL SYSTEM. This Service Information Bulletin provides additional information for the diagnostic procedures concerning measurement of Dark Current (a.k.a. Standby Current).
15-302-222022-09-08. Service bulletin. EQUIPMENT; ELECTRICAL SYSTEM. This bulletin contains illustrations of exchange components and their manufacturer as well as a description of the proper exchange procedure.
07-207-22R2022-09-08. Service bulletin. ELECTRICAL SYSTEM. This bulletin announces a warranty extension information regarding 12 Volt vehicle batteries.
15-236-18R2022-09-08. 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 as listed.
15-282-21R2022-09-08. Service bulletin. ELECTRICAL SYSTEM; EQUIPMENT. This Bulletin provides additional procedures and a detailed flow chart to use when diagnosing customer concerns regarding operation of the STARLINK RES feature.
12-240-222022-09-08. Service bulletin. 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.

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