Subaru Ascent 2019–2021 — technical service bulletin
Bulletin 15-236-18R · NHTSA communication 10186355 · issued Jan 7, 2021
Technical service bulletin
communication type
Electrical System
component
2019–2021
model years
19
vehicle entries
Official summary
Reprogramming File Availability for Optimization of Harman Gen 3.1 and Gen 3.1α Audio and Navigation Head Units.
Vehicles covered
- 2019 Subaru Ascent
- 2020 Subaru Ascent
- 2021 Subaru Ascent
- 2019 Subaru BRZ
- 2020 Subaru BRZ
- 2019 Subaru Crosstrek
- 2020 Subaru Crosstrek
- 2021 Subaru Crosstrek
- 2019 Subaru Forester
- 2020 Subaru Forester
- 2021 Subaru Forester
- 2019 Subaru Impreza
- 2020 Subaru Impreza
- 2021 Subaru Impreza
- 2019 Subaru Legacy
- 2019 Subaru Outback
- 2019 Subaru WRX
- 2020 Subaru WRX
- 2021 Subaru WRX
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.