Excess noise when defrost blower is at max.
BMW technical service bulletin B640518 for 2018-2019 BMW X3.
- 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 when defroster blower is set at maximum speed. Software error in IHKA (Automatic Climate Control) module. Ventilation duct noise.
Owners of these vehicles have filed 7 complaints in the visibility category.
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