Volkswagen Tiguan 2018–2020 — technical service bulletin
Bulletin Dealer 24GB · NHTSA communication 10180090 · issued Sep 15, 2020
Technical service bulletin
communication type
Electrical System
component
2018–2020
model years
3
vehicle entries
Official summary
Volkswagen is providing an Engine and Transmission Control Module (ECM/TCM) software update to address elevated tailpipe emissions that were found during vehicle testing. This software will also improve drivability and provide other diagnostic improvements.
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.