Audi A4 2012–2014 — technical service bulletin
Bulletin 2013282035073 2 · NHTSA communication 10204483 · issued Nov 14, 2013
Technical service bulletin
communication type
Engine and Engine Cooling
component
2012–2014
model years
14
vehicle entries
Official summary
After the engine is switched off, the fuel system creates a natural vacuum as the fuel in the fuel ank cools off. If the natural vacuum leak detection (NVLD)
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.