Subaru Ascent 2017–2020 — technical service bulletin
Bulletin 15-231-18R · NHTSA communication 10168571 · issued Nov 18, 2019
Technical service bulletin
communication type
Equipment
component
2017–2020
model years
22
vehicle entries
Official summary
This bulletin provides troubleshooting steps to use when diagnosing specific and general audio/sound related concerns. Please start by completing the Harman Investigation Guide-Questionnaire as it gathers important details which will assist you with this diagnosis and is required should the condition not be resolved by this troubleshooting. Once the questionnaire is completed, follow the question flow based on the customer concern. Answer each related question noting the results to each in detail while performing the diagnostics. Review the entire bulletin before beginning to understand the fl
Vehicles covered
- 2019 Subaru Ascent
- 2020 Subaru Ascent
- 2018 Subaru BRZ
- 2019 Subaru BRZ
- 2020 Subaru BRZ
- 2018 Subaru Crosstrek
- 2019 Subaru Crosstrek
- 2020 Subaru Crosstrek
- 2019 Subaru Forester
- 2020 Subaru Forester
- 2017 Subaru Impreza
- 2018 Subaru Impreza
- 2019 Subaru Impreza
- 2020 Subaru Impreza
- 2018 Subaru Legacy
- 2019 Subaru Legacy
- 2018 Subaru Outback
- 2019 Subaru Outback
- 2019 Subaru WRX
- 2020 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.