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RecallGazette

Vehicle problems, recalls & safety intelligence

Subaru Ascent 2016–2026technical service bulletin

Bulletin 18-230-26 · NHTSA communication 11033051 · issued May 1, 2026

Technical service bulletin
communication type
Engine
component
2016–2026
model years
60
vehicle entries

Official summary

This bulletin announces the diagnostic procedures to be used when DTCs B1571(REFERENCE CODE INCOMPATIBILITY IMMOBILIZER CM TO ECM) and B1572(IMM CIRCUIT EXCEPT ANTENNA CIRCUIT) are detected by Keyless Access with Push Button Start(KACM).

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.