Subaru Ascent 2023–2025 — technical service bulletin
Bulletin 15-330-25 · NHTSA communication 11024866 · issued Oct 28, 2025
Technical service bulletin
communication type
Electrical System
component
2023–2025
model years
15
vehicle entries
Official summary
This Service Bulletin is to inform you of a procedure to restore CP1.5’s normal operation by initializing the head unit.
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.