Volkswagen Tiguan 2019–2021 — technical service bulletin
Bulletin TT 01 21 01 · NHTSA communication 10189310 · issued Mar 19, 2021
Technical service bulletin
communication type
Fuel System, Gasoline
component
2019–2021
model years
3
vehicle entries
Official summary
Evap diagnosis for fuel cap tether issues.
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.