Subaru Legacy 2019–2021 — technical service bulletin

Bulletin 15-318-24R · NHTSA communication 10252465 · issued Mar 19, 2024

Technical service bulletin

communication type

Equipment

component

2019–2021

model years

vehicle entries

Official summary

This bulletin announces the availability of the DCM Bypass Box designed to be used as an alternative replacement part for Data Communication Module (DCM) in vehicles with no active STARLINK subscription.

Vehicles covered

2019 Subaru Legacy
2019 Subaru Outback
2019 Subaru WRX
2020 Subaru WRX
2021 Subaru WRX

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.