Subaru Ascent 2017–2021 — technical service bulletin
Bulletin 15-221-18R · NHTSA communication 10188173 · issued Feb 12, 2021
Technical service bulletin
communication type
Electrical System
component
2017–2021
model years
24
vehicle entries
Official summary
This bulletin provides helpful information about operating conditions observed in the field for Technicians to use when diagnosing customer concerns which may arise while operating Harman Gen 3 Navigation and Display Audio systems.
Vehicles covered
- 2019 Subaru Ascent
- 2020 Subaru Ascent
- 2021 Subaru Ascent
- 2018 Subaru BRZ
- 2019 Subaru BRZ
- 2020 Subaru BRZ
- 2018 Subaru Crosstrek
- 2019 Subaru Crosstrek
- 2020 Subaru Crosstrek
- 2021 Subaru Crosstrek
- 2017 Subaru Impreza
- 2018 Subaru Impreza
- 2019 Subaru Impreza
- 2020 Subaru Impreza
- 2021 Subaru Impreza
- 2018 Subaru Legacy
- 2019 Subaru Legacy
- 2018 Subaru Outback
- 2019 Subaru Outback
- 2019 Subaru WRX
- 2020 Subaru WRX
- 2021 Subaru WRX
- 2019 Subaru WRX Sti
- 2020 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.