BMW 335I 2012–2015 — technical service bulletin
Bulletin 170115 · NHTSA communication 10147075 · issued Feb 1, 2015
Technical service bulletin
communication type
Engine and Engine Cooling
component
2012–2015
model years
7
vehicle entries
Official summary
SUBJECT Reduced Heat After Cooling System Repairs.
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.