Subaru Forester 2017–2018 — technical service bulletin
Bulletin 15-237-19 · NHTSA communication 10154422 · issued Jan 28, 2019
Technical service bulletin
communication type
Equipment
component
2017–2018
model years
2
vehicle entries
Official summary
This bulletin provides a diagnostic procedure for a chattering-type sound originating from the a/c compressor assembly. In the case where a refrigerant leak is identified as coming from the a/c condenser, the level of refrigerant oil may also drop and cause the internal vanes of the compressor to make a chattering-type sound. A new-style A/C condenser has been established with enhanced corrosion resistance.
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.