The sunroof frame may not have been properly sealed, causing a water leak into the vehicle
BMW technical service bulletin B540120 for 2019-2020 BMW 330I, 2020 BMW M340I and 2021 BMW 330E.
- Bulletin number
- B540120
- Component
- Structure
- Summary
- SERVICE ACTION - CHECK SUNROOF SEALING: The sunroof frame may not have been properly sealed, causing a water leak into the vehicle. Improper sealing during production.
Owners of these vehicles have filed 2 complaints in the body category.
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