Volkswagen Jetta 2011–2015 — technical service bulletin
Bulletin TT 28 18 01 · NHTSA communication 10150808 · issued Jul 6, 2018
Technical service bulletin
communication type
Engine
component
2011–2015
model years
5
vehicle entries
Official summary
Waste spark description and diagnosis.
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.