Subaru Legacy 2019–2021 — technical service bulletin
Bulletin 15-318-24 · NHTSA communication 10251102 · issued Feb 23, 2024
Technical service bulletin
communication type
Equipment
component
2019–2021
model years
5
vehicle entries
Official summary
This bulletin announces the availability of a Data Communication Module (DCM) bypass box. This has been designed as an alternative replacement part for vehicles without active STARLINK subscriptions. The bypass box will support audio functions for the infotainment system.
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.