BMW X3 2013–2016 — technical service bulletin
Bulletin B640314 · NHTSA communication 10147687 · issued Mar 1, 2015
Technical service bulletin
communication type
Equipment
component
2013–2016
model years
7
vehicle entries
Official summary
Heating and Air Conditioning March 2015 Technical Service This Service Information bulletin supersedes SI B64 03 14 dated March 2015. designates changes to this revision SUBJECT A/C Operation: Reduced or No Airflow After Long Drive. The customer complains of reduced air-conditioning air flow when driving for a long period, usually greater than 30 minutes. This time varies based on outside temperature and humidity. The A/C low-pressure lines and evaporator are starting to freeze up.
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.