Subaru Ascent 2019–2025 — technical service bulletin
Bulletin 12-252-23R · NHTSA communication 11023508 · issued Sep 30, 2025
Technical service bulletin
communication type
Electrical System
component
2019–2025
model years
16
vehicle entries
Official summary
This bulletin announces the availability of new seat ventilation blower units. This update is set to address some cases of a vibration-type sound emitting from the blower unit during seat ventilation operation.
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.