BMW 228I 2014–2016 — technical service bulletin
Bulletin B651315 · NHTSA communication 10147266 · issued Sep 1, 2015
Technical service bulletin
communication type
Equipment
component
2014–2016
model years
12
vehicle entries
Official summary
DWA - False Alarm. The alarm system sporadically activates by itself or the vehicle horn will be activated after the siren comes on. CAUSE Application error in DWA (Alarm System).
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.