Diagnosing noise from the rear exhaust flap (B58)
BMW technical service bulletin B180118 for 2016-2017 BMW 340I, 2017-2018 BMW 440I and 2017-2018 BMW M240I.
- Bulletin number
- B180118
- Component
- Engine and engine cooling: exhaust system
- Summary
- DIAGNOSING NOISE FROM THE REAR EXHAUST FLAP (B58): There is a rattling noise from the rear exhaust flap during initial start-up.
Owners of these vehicles have filed 4 complaints in the engine category.
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