Subaru WRX 2022–2023 — technical service bulletin
Bulletin 15-301-22R · NHTSA communication 11033067 · issued May 15, 2026
Technical service bulletin
communication type
Electrical System
component
2022–2023
model years
2
vehicle entries
Official summary
This bulletin announces reprogramming file availability and provides a software update installation procedure to optimize the new Gen 4 Denso CP1 Audio and Navigation head units utilized in the models listed.
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.