BMW 320I 2012–2014 — technical service bulletin
Bulletin 170113 · NHTSA communication 10150102 · issued Mar 1, 2013
Technical service bulletin
communication type
Engine and Engine Cooling
component
2012–2014
model years
11
vehicle entries
Official summary
Service Action: Replace Coolant Expansion Tank. The low coolant level warning may come on in the information display. CAUSE Insufficient contact 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.