In some vehicles, a software condition may
Volkswagen technical service bulletin Circular 24BD_20260814 for 2025-2026 Volkswagen Tiguan.
- Bulletin number
- Circular 24BD_20260814 (24BD)
- Component
- Unknown or other
- 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. Updated ECM software version table to include additional versions
Vehicles covered
- Volkswagen Tiguan 2025-2026 20252026
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