BMW i3 2014–2016 — technical service bulletin
Bulletin B122715 · NHTSA communication 10147809 · issued Nov 1, 2015
Technical service bulletin
communication type
Electrical System
component
2014–2016
model years
6
vehicle entries
Official summary
"Service Engine Soon (MIL) - IHKA FC 801375. The Service Engine Soon light (MIL) is currently or intermittently illuminated in the instrument cluster and fault code 801375 ""Electric auxiliary heater (high voltage) is stored: Temporary fault detected after software reset ""is stored in the Automatic Climate Control (IHKA). CAUSE IHKA software or Electric Heater (EH)."
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.