BMW 530I 2016–2017 — technical service bulletin
Bulletin B123017 · NHTSA communication 10136716 · issued Dec 1, 2017
Technical service bulletin
communication type
Electrical System
component
2016–2017
model years
8
vehicle entries
Official summary
SERVICE ACTION: PROGRAM CONTROL UNITS (EME): Due to the EME software error, OBD diagnostics may not detect emission relevant fault codes stored in the IHKA (heating & A/C) control module
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.