Subaru Ascent 2019 — technical service bulletin
Bulletin 15-256-19 · NHTSA communication 10168622 · issued Nov 11, 2019
Technical service bulletin
communication type
Electrical System
component
2019
model years
8
vehicle entries
Official summary
This bulletin provides information on a new reprogramming procedure (FOTA) to optimize the Harman Gen 3.1 Audio and Navigation head units (H/U) utilized in the models as listed above.
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.