Subaru Ascent 2004–2025 — technical service bulletin
Bulletin 16-154-25 · NHTSA communication 11023498 · issued Sep 2, 2025
Technical service bulletin
communication type
Power Train
component
2004–2025
model years
23
vehicle entries
Official summary
This Bulletin announces the release of a new diagnostic assistance application for TR690 CVT-equipped vehicles.
Vehicles covered
- 2019 Subaru Ascent
- 2020 Subaru Ascent
- 2021 Subaru Ascent
- 2022 Subaru Ascent
- 2023 Subaru Ascent
- 2024 Subaru Ascent
- 2025 Subaru Ascent
- 2020 Subaru Legacy
- 2021 Subaru Legacy
- 2022 Subaru Legacy
- 2023 Subaru Legacy
- 2024 Subaru Legacy
- 2025 Subaru Legacy
- 2020 Subaru Outback
- 2021 Subaru Outback
- 2022 Subaru Outback
- 2023 Subaru Outback
- 2024 Subaru Outback
- 2025 Subaru Outback
- 2022 Subaru WRX
- 2023 Subaru WRX
- 2024 Subaru WRX
- 2004 Subaru WRX Sti
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.