Subaru WRX 2015–2020 — technical service bulletin
Bulletin 18-210-21 · NHTSA communication 10194841 · issued May 13, 2021
Technical service bulletin
communication type
Equipment
component
2015–2020
model years
12
vehicle entries
Official summary
Description of current changes to Service Manuals available via the Subaru Technical Information System (STIS) web site.
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.