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June 1, 2022 Service bulletin

The air conditioning cycles from cold to warm air while driving or while at a stand still

BMW technical service bulletin SIB640821 for 2019-2023 BMW X7, 2000-2022 BMW X6 and 2017-2021 BMW M550I and others.

Bulletin number
SIB640821
Component
Visibility: defroster/defogger/HVAC system
Summary
The air conditioning cycles from cold to warm air while driving or while at a stand still. The vent outlet temperatures vary by 25 degrees Fahrenheit or more (38 F to 60 F +) without changing any climate control settings. In some cases the air conditioning may have stopped blowing cold air altogether.

Owners of these vehicles have filed 12 complaints in the visibility category.

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