Acura RLX 2014–2017 — technical service bulletin
Bulletin BTS161202 · NHTSA communication 10099078 · issued Dec 7, 2016
Technical service bulletin
communication type
Equipment
component
2014–2017
model years
4
vehicle entries
Official summary
Tech line summary article - we re getting reports of a high-pitched whine with the a/c running. It goes away when the a/c is turned off. Changing the fan speed has no effect on the noise, and it seems to be worse with the engine running between 1,600 to 2,100 rpm. From our investigation, we ve found that this noise is coming from a resonance in the a/c compressor, which is getting transmitted into the cabin through the refrigerant lines.
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.