Excess noise when defrost blower is at max
BMW technical service bulletin B640518 for 2018 BMW X3 and 2018 BMW X4.
- Bulletin number
- B640518
- Component
- Visibility: defroster/defogger/HVAC system: fan/motor
- Summary
- EXCESS NOISE WHEN DEFROST BLOWER IS AT MAX: Loud, rushing, wind noise is heard from ventilation outlets, as shown in video, https://tinyurl.com/V640418 when defroster blower is set at maximum speed.
Owners of these vehicles have filed 2 complaints in the visibility category.
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