Subaru Ascent 2017–2022 — technical service bulletin
Bulletin 16-132-20R · NHTSA communication 10199954 · issued Jul 22, 2021
Technical service bulletin
communication type
Power Train
component
2017–2022
model years
25
vehicle entries
Official summary
Diagnostic Information for Alleged Chain Slip Condition on TR580 / TR690 Transmissions.
Vehicles covered
- 2019 Subaru Ascent
- 2020 Subaru Ascent
- 2021 Subaru Ascent
- 2018 Subaru Crosstrek
- 2019 Subaru Crosstrek
- 2020 Subaru Crosstrek
- 2021 Subaru Crosstrek
- 2019 Subaru Forester
- 2020 Subaru Forester
- 2021 Subaru Forester
- 2017 Subaru Impreza
- 2018 Subaru Impreza
- 2019 Subaru Impreza
- 2020 Subaru Impreza
- 2021 Subaru Impreza
- 2018 Subaru Legacy
- 2019 Subaru Legacy
- 2020 Subaru Legacy
- 2021 Subaru Legacy
- 2022 Subaru Legacy
- 2018 Subaru Outback
- 2019 Subaru Outback
- 2020 Subaru Outback
- 2021 Subaru Outback
- 2022 Subaru Outback
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.