A whistling noise is present from the fresh air inlet area (engine compartment bulkhead area), in the...
BMW technical service bulletin B640121 for 2018-2022 BMW X3 and 2019-2022 BMW X4.
- Bulletin number
- B640121
- Component
- Structure
- Summary
- A whistling noise is present from the fresh air inlet area (engine compartment bulkhead area), in the right front area of the vehicle, at speeds above 40 mph. The noise is loudest when the sunroof is in the vent position.
Owners of these vehicles have filed 73 complaints in the body category.
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