Volkswagen Jetta 2018–2025 — technical service bulletin
Bulletin VOS-25-34 · NHTSA communication 11017589 · issued Apr 22, 2025
Technical service bulletin
communication type
Engine
component
2018–2025
model years
11
vehicle entries
Official summary
This is a notice for software changes with the ODIS diagnostic program to correct the communication during vehicle programming function: This hotfix is for the fill and bleed cooling system test funtion issue.
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.