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Service bulletins for the 2023 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.

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

By type

By component

By trouble code

Bulletins, newest first
16-132-20R2023-07-03. Service bulletin. POWER TRAIN; ELECTRICAL SYSTEM. This Service Information Bulletin provides updated diagnostic procedures to follow and a brief questionnaire to complete when diagnosing an alleged Chain Slip condition on the TR580 and TR690 model CVT transmissions used in the models listed.
14-28-21R2023-07-03. Service bulletin. ELECTRICAL SYSTEM:SOFTWARE; EQUIPMENT; ELECTRICAL SYSTEM. This Service Information Bulletin announces the new control module software reprogramming procedures.
07-211-232023-07-03. Service bulletin. LANE DEPARTURE; LANE DEPARTURE: SENSING SYSTEM: CAMERA; ELECTRICAL SYSTEM; ELECTRICAL SYSTEM:WIRING. This Bulletin provides the printable target chart needed to perform the wide angle mono camera adjustment procedure for the EyeSight system.
16-136-22R2023-07-03. Service bulletin. POWER TRAIN:AUTOMATIC TRANSMISSION:TORQUE CONVERTER; POWER TRAIN; ENGINE AND ENGINE COOLING; POWER TRAIN:AUTOMATIC TRANSMISSION:INTERNAL:CVT; POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE (TCM/PCM/TECM). This service bulletin provides a temporary repair procedure to address vibrations and/or judder concerns experienced on turns during acceleration.
15-300-22R2023-07-03. Service bulletin. ENGINE AND ENGINE COOLING; ELECTRICAL SYSTEM; EQUIPMENT; COMMUNICATION:MANUFACTURER TELEMATICS. This Service Information Bulletin provides the diagnostic procedure for the STARLINK® Remote Engine Start (RES). All Gen2 and Gen3 Telematics Equipped Models.
SubaruNet Announ2023-07-03. Service bulletin. SUSPENSION:FRONT:CONTROL ARM:LOWER ARM; SUSPENSION. WRJ-23 Front lower arm castle nut torque.
WRJ-23R2023-07-03. Service bulletin. SUSPENSION:MULTIPLE AXLE:TORQUE ARM; SUSPENSION. Subaru of America, Inc. (Subaru) has initiated a safety recall for certain 2023 model year Ascent vehicles that may be equipped with a front lower control arm with a loose castle nut.
SubaruNet Announ2023-06-05. Service bulletin. ELECTRICAL SYSTEM; EQUIPMENT. To improve our customer’s experience with software updates, bug fixes and performance enhancements, we are launching our first Head Unit FOTA to eligible customers who are subscribed to STARLINK Safety Plus.
14-28-21R2023-06-05. Service bulletin. ELECTRICAL SYSTEM. This Service Information Bulletin announces the new control module software reprogramming procedures for 2022MY and later BRZ models.
05-62-18R2023-06-05. Service bulletin. SUSPENSION. This bulletin provides a procedure to address customer concerns of surface rust accumulating in the top center retaining nut area of the front strut mounts.
07-213-22R2023-06-05. Service bulletin. ELECTRICAL SYSTEM; EQUIPMENT. This bulletin announces a new Genuine Subaru Replacement battery for use in applications where the current SOA821B700 battery is specified.
16-141-232023-06-05. Service bulletin. POWER TRAIN. This bulletin announces availability of reprogramming files to optimize the Transmission Control Module (TCM).
15-302-22R2023-06-05. 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.
15-305-22R2023-05-02. Service bulletin. EQUIPMENT:ELECTRICAL:INFOTAINMENT; EQUIPMENT; ELECTRICAL SYSTEM. Reprogramming File Availability for Optimization of Gen 4.5 Denso CP1.5 Infotainment Systems
SubaruNet Announ2023-05-02. Service bulletin. WHEELS. UPDATE Safety Recall/STOP SALE: WRH-23 Tire Bead Damage.
16-132-20R2023-05-02. Service bulletin. POWER TRAIN. This Bulletin provides updated diagnostic procedures to follow and a brief questionnaire to complete when diagnosing an alleged Chain Slip condition on the TR580 and TR690 model CVT transmissions used in the models listed.
15-302-22R2023-05-02. 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.
WRH-232023-05-02. Service bulletin. WHEELS. Subaru of America, Inc. (Subaru) is initiating a new safety recall and stop sale for certain 2023 model year Ascent vehicles equipped with 20-inch wheels.
15-266-20R2023-05-02. 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/Gen 3 Telematics system equipped Subaru.
12-281-20R2023-05-02. Service bulletin. EQUIPMENT; STRUCTURE. This bulletin provides a repair procedure to address a small number of customer concerns of the hood panel surface vibrating while driving.
SubaruNet Announ2023-05-02. Service bulletin. WHEELS. Subaru of America, Inc. (Subaru) is initiating a new safety recall and stop sale for certain 2023 model year Ascent vehicles equipped with 20-inch wheels.
15-285-21R2023-04-06. Service bulletin. EQUIPMENT; EQUIPMENT:ELECTRICAL:INFOTAINMENT; ELECTRICAL SYSTEM. This Bulletin provides reference tables and photos to use for determining the infotainment head unit supplier and generation.
15-268-20R2023-04-06. Service bulletin. EQUIPMENT:ELECTRICAL:NAVIGATIONAL SYSTEM(GLOBAL POSITIONING SYSTEM); ELECTRICAL SYSTEM. USB Map Data Update Procedure for Denso Gen 4 Navigation Equipped System.
15-305-22R2023-04-06. Service bulletin. EQUIPMENT:ELECTRICAL:NAVIGATIONAL SYSTEM(GLOBAL POSITIONING SYSTEM); ELECTRICAL SYSTEM. The following information announces reprogramming file availability and provides a software update installation procedure to optimize the new Gen 4.5 Denso CP1.5 Audio and Navigation head units utilized in the models listed.
07-213-22R2023-04-06. Service bulletin. ELECTRICAL SYSTEM. This bulletin announces a new Genuine Subaru Replacement battery for use in applications where the current SOA821B700 battery is specified.

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