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
| 07-155-19R | 2021-03-04. Service bulletin. LATCHES/LOCKS/LINKAGES; ELECTRICAL SYSTEM; STRUCTURE. This bulletin replaces TSB 07-143-18R and announces additional changes made to the PRG control module. These changes are in response to a limited number of customer concerns regarding the rear gate not opening when operating the gate mounted switch, dashboard switch or the rear gate button on the key fob. |
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| 14-22-16R | 2021-02-18. Service bulletin. EQUIPMENT. To help reduce confusion and increase technician efficiency, Subaru of America, Inc. (SOA) has developed the following cross reference list to help locate the appropriate Special Service Tool. |
| 07-184-20R | 2021-02-01. Service bulletin. ELECTRICAL SYSTEM. This bulletin announces a design change made to the power window main switches. |
| 16-128-20R | 2021-02-01. 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 determines the sensor itself is OK but the transmission wiring harness is NG. |
| 16-132-20R | 2021-02-01. 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. |
| 15-219-18R | 2021-02-01. Service bulletin. ELECTRICAL SYSTEM. This bulletin provides information related to error code 202 and/or 204 generated during the Gen 2 Telematics subscription process. This bulletin is applicable to all 2019-2021MY vehicles equipped with a Gen. 2 Telematics System. |
| 12-300-20R | 2021-02-01. Service bulletin. EQUIPMENT; STRUCTURE:BODY:TAILGATE; EQUIPMENT ADAPTIVE/MOBILITY. 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. |
| 15-265-20R | 2021-02-01. Service bulletin. ELECTRICAL SYSTEM; EQUIPMENT. This bulletin provides an overview and basic instructions for use of the “Destination to Vehicle” feature of the Gen 2 Telematics system. |
| 15-266-20R | 2021-02-01. Service bulletin. ELECTRICAL SYSTEM. This 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. |
| 15-267-20R | 2021-02-01. Service bulletin. EQUIPMENT; ELECTRICAL SYSTEM. This bulletin provides information related to the telematics system's Automatic Collision Notification (ACN) and Advanced Automatic Collision Notification (AACN) feature operation, diagnostic tips, and best practices. |
| 15-242-19R | 2021-02-01. Service bulletin. ELECTRICAL SYSTEM. This bulletin has been developed for use as a quick reference tool to aid in diagnosing operational concerns of the Gen 2 Telematics system's remote access features. |
| 12-203-16R | 2021-02-01. Service bulletin. SEAT BELTS; SEATS. This bulletin provides a procedure to address customer concerns of a squeaking sound originating from where the front seat belt buckle assembly attaches to the seat frame. |
| 15-236-18R | 2021-02-01. Service bulletin. ELECTRICAL SYSTEM; EQUIPMENT. Reprogramming File Availability for Optimization of Harman Gen 3.1 and Gen 3.1α Audio and Navigation Head Units. |
| 01-168-09R | 2021-02-01. Service bulletin. ELECTRICAL SYSTEM; EQUIPMENT. The purpose of this bulletin is to provide replacement key and immobilizer information. |
| 16-132-20R | 2021-01-05. Service bulletin. POWER TRAIN; EQUIPMENT. This Service Information Bulletin provides updated diagnostic procedures to follow when diagnosing an alleged Chain Slip condition on the TR580 and TR690 model CVT transmissions. |
| 15-236-18R | 2021-01-05. Service bulletin. ELECTRICAL SYSTEM; EQUIPMENT:ELECTRICAL:NAVIGATIONAL SYSTEM(GLOBAL POSITIONING 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. |
| 12-203-16R | 2021-01-05. Service bulletin. SEAT BELTS; EQUIPMENT ADAPTIVE/MOBILITY; EQUIPMENT. This bulletin provides a procedure to address customer concerns of a squeaking sound originating from where the front seat belt buckle assembly attaches to the seat frame. |
| 12-203-16R | 2021-01-05. Service bulletin. SEAT BELTS; SEATS; EQUIPMENT ADAPTIVE/MOBILITY; EQUIPMENT. This bulletin provides a procedure to address customer concerns of a squeaking sound originating from where the front seat belt buckle assembly attaches to the seat frame. |
| 15-219-18R | 2021-01-05. Service bulletin. ELECTRICAL SYSTEM; EQUIPMENT. This bulletin provides information related to error code(s) 202 and/or 204 generated during the Gen 2 telematics subscription process. |
| 12-306-20R | 2021-01-05. Service bulletin. SEATS; EQUIPMENT; EQUIPMENT ADAPTIVE/MOBILITY. This bulletin provides a repair procedure to address a squeaking sound coming from the backrest hinge area of the front seats. The procedure applies to both manually and power operated seat assemblies. |
| 16-103-16R | 2021-01-05. Service bulletin. POWER TRAIN. This bulletin has been developed in response to a small number of customer concerns regarding fluid seepage found coming from the CVT assembly. |
| 16-131-20 | 2020-12-05. Service bulletin. POWER TRAIN. This Service Information Bulletin provides corrected diagnostics containing a revised flow for certain CVT solenoid related DTCs. |
| 15-255-19R | 2020-12-05. Service bulletin. EQUIPMENT. Map update for Harman Gen 3.1 Navigation Equipped Head Units. |
| Subaru Tech Tips | 2020-12-05. Service bulletin. ELECTRICAL SYSTEM; EQUIPMENT; ENGINE AND ENGINE COOLING. Subaru Service and Technical Support Line Newsletter. (QMR of the Month) |
| 12-300-20R | 2020-12-05. 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. |
The summaries are NHTSA's. Each bulletin's page links NHTSA's copy of the manufacturer's document.