Volkswagen Passat 2012–2014 — technical service bulletin
Bulletin 24CX · NHTSA communication 10157180 · issued Jun 26, 2017
Technical service bulletin
communication type
Engine and Engine Cooling
component
2012–2014
model years
3
vehicle entries
Official summary
The snow flap in the inlet air box housing may remain partially to fully open. Should this occur, excess warm air could enter the air intake through the snow flap inlet.
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.