Volkswagen Atlas 2018–2021 — technical service bulletin
Bulletin TT 01 21 02 · NHTSA communication 10194520 · issued May 28, 2021
Technical service bulletin
communication type
Engine and Engine Cooling
component
2018–2021
model years
6
vehicle entries
Official summary
Radiator Shutter -V544- diagnostic assistance
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.