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February 1, 2016 Service bulletin

This Service Information bulletin supersedes SI B64 09 15 dated January 2016

BMW technical service bulletin B640915 for 2012-2016 BMW 328I, 2017 BMW 330I and 2012-2016 BMW 335I and others.

Bulletin number
B640915
Component
Equipment: appliance: air conditioner
Summary
This Service Information bulletin supersedes SI B64 09 15 dated January 2016. designates changes to this revision SUBJECT Whistling Noise Coming from the Center Vent - A/C is Off. A very high pitched whistling or beeping noise is heard coming from the center vents. The flow of refrigerant through the expansion valve at certain temperature differentials.

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