BMW 750LI 2014–2017 — technical service bulletin
Bulletin B650516 · NHTSA communication 10151195 · issued Mar 1, 2016
Technical service bulletin
communication type
Electrical System
component
2014–2017
model years
20
vehicle entries
Official summary
"False Alarms of the Anti-Theft Alarm System. The alarm (DWA) siren continues to activate after locking vehicle An ""unapproved"" device is connected to the On-Board Diagnostics (OBD) port of the vehicle. This keeps the Ethernet communication line active which triggers the alarm when the vehicle tries to enter sleep mode."
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.