There may be an internal leakage in the brake fluid expansion tank (aka brake fluid reservoir)
BMW technical service bulletin B340925 for 2024 BMW 330I, 2024 BMW M3 and 2024 BMW 430I and others.
- Bulletin number
- B340925 (0034200300)
- Component
- Service brakes
- Summary
- There may be an internal leakage in the brake fluid expansion tank (aka brake fluid reservoir). In the rare case of a leak, the filling level sensor might malfunction over a relatively long period of time.
Owners of these vehicles have filed 1 complaints in the brakes category.
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