Subaru Ascent 2023 — technical service bulletin
Bulletin 15-311-23 · NHTSA communication 10238458 · issued Jun 23, 2023
Technical service bulletin
communication type
Equipment
component
2023
model years
3
vehicle entries
Official summary
This bulletin provides instruction for use of a new reprogramming procedure to optimize the Denso Gen 4.5 Audio and Navigation system utilized in the models listed.
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.