Honda Accord 2014–2017 — technical service bulletin
Bulletin A17-022 · NHTSA communication 10108362 · issued Apr 11, 2017
Technical service bulletin
communication type
Equipment
component
2014–2017
model years
4
vehicle entries
Official summary
Service bulletin - there is a flapping or fluttering coming from the left rear of the vehicle when the vent position is set to floor/defrost, recirculation is on, and the blower speed is set to at least three bars. The noise is coming from the rear air outlet that is behind the rear bumper on the left side of the vehicle.
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.