Subaru Ascent 2017–2021 — technical service bulletin
Bulletin 12-319-21 · NHTSA communication 10191666 · issued Apr 30, 2021
Technical service bulletin
communication type
Structure
component
2017–2021
model years
8
vehicle entries
Official summary
This bulletin announces design changes made to the front and rear door glass run channels.
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.