Subaru Ascent 2017–2021 — technical service bulletin
Bulletin Subarunet Announ · NHTSA communication 10189674 · issued Mar 26, 2021
Technical service bulletin
communication type
Electrical System
component
2017–2021
model years
8
vehicle entries
Official summary
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.
Vehicles covered
What a TSB means. Technical service bulletins are repair guidance manufacturers send to dealers — they are not recalls, and repairs are not automatically free (warranty extensions are an exception worth checking). The full document is available via NHTSA’s vehicle lookup.