BMW 3 Series 2010 — technical service bulletin
Bulletin SIB-17-04-10 · NHTSA communication 10037255 · issued Oct 1, 2010
Technical service bulletin
communication type
Engine and Engine Cooling
component
2010
model years
2
vehicle entries
Official summary
Bmw: the vent hole of the cooling hose coupling on the drivers side of the radiator may be blocked. There is a procedure for checking and fixing the problem. *rm
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.