Volkswagen Tiguan 2025–2026 — service campaign
Bulletin Circular 24BD · NHTSA communication 11036857 · issued Aug 6, 2026
Service campaign
communication type
Unknown / Other
component
2025–2026
model years
2
vehicle entries
Official summary
In some vehicles, a software condition may cause the engine control module (ECM) to remain active after a diagnostic check has been completed. If this occurs, the 12‑volt battery could gradually discharge while the vehicle is turned off. Under this service action, Volkswagen is providing an ECM software update to ensure the control module shuts down properly and to help prevent unnecessary battery drain.
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.