BMW 320I 2012–2013 — technical service bulletin
Bulletin 170212 · NHTSA communication 10162422 · issued Jul 10, 2019
Technical service bulletin
communication type
Electrical System
component
2012–2013
model years
4
vehicle entries
Official summary
Low Coolant Warning Is Displayed. The low coolant level warning may come on in the information display. CAUSE Moisture-induced corrosion at the electrical connector for the coolant level sensor causes an inaccurate reading of the coolant level.
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.