Due to a manufacturing defect, there might be an internal leakage of the brake fluid expansion tank
BMW technical service bulletin B340225 for 2025 BMW 330I, 2025 BMW 430I and 2025 BMW M240I.
- Bulletin number
- B340225
- Component
- Service brakes
- Summary
- Due to a manufacturing defect, there might be an internal leakage of the brake fluid expansion tank. In therare case that there is a leakage, the filling level sensor might malfunction over a relatively long period oftime .
Owners of these vehicles have filed 4 complaints in the brakes category.
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