Subaru Ascent 2017–2021 — technical service bulletin
Bulletin 15-240-19R · NHTSA communication 10180730 · issued Sep 22, 2020
Technical service bulletin
communication type
Electrical System
component
2017–2021
model years
14
vehicle entries
Official summary
This bulletin announces availability of new Harman audio unit amplifier units with revised internal logic designed to optimized efficiency.
Vehicles covered
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.