Subaru Ascent 2019–2022 — technical service bulletin
Bulletin 12-240-22R · NHTSA communication 11018901 · issued May 5, 2025
Technical service bulletin
communication type
Air Bags
component
2019–2022
model years
4
vehicle entries
Official summary
This bulletin announces the repair procedures for the left and right-side horns to address DTC B1610 (Front Sub Sensor RH Failure) detected when the horns are operated shortly after engine start up.
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.