BMW 320I 2012–2015 — technical service bulletin
Bulletin 640713 · NHTSA communication 10147950 · issued Jan 1, 2014
Technical service bulletin
communication type
Visibility
component
2012–2015
model years
20
vehicle entries
Official summary
Service Action: Replace Blower Motor Regulator. The blower motor regulator has an internal fault; after starting the engine, there may be a delay of up to a minute before the blower motor comes on CAUSE Faulty blower motor regulator (output stage)
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.