Check a VIN

June 1, 2023 Service bulletin

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

BMW technical service bulletin B640821 for 2019-2023 BMW X5, 2017-2023 BMW 530I and 2016-2022 BMW 750LI and others.

Bulletin number
B640821
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.

Owners of these vehicles have filed 26 complaints in the visibility category.

Vehicles covered

VIN decoder

See the problems and recalls for an exact car

Buying a used BMW X5?

Check the exact car before you pay: accidents, salvage or flood titles, odometer readings and previous owners.

Check its history