The air conditioning cycles from cold to warm air while driving or while at a stand still
BMW technical service bulletin B640821 for 2019-2021 BMW X5, 2017-2021 BMW 530I and 2016-2019, 2021 BMW 750LI and others.
- Bulletin number
- B640821
- Component
- Electrical 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 (38F to 60F +) 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 259 complaints in the electrical category.
Vehicles covered
- BMW X5 2019-2021 201920202021
- BMW 530I 2017-2021 20172018201920202021
- BMW 750LI 2016-2019, 2021 20162017201820192021
- BMW X7 2019-2021 201920202021
- BMW 540I 2017-2021 20172018201920202021
- BMW X6 2021 2021
- BMW 750I 2018-2019 20182019
- BMW 740I 2017-2021 20172018201920202021
- BMW M5 2018-2021 2018201920202021
- BMW 530E 2018-2021 2018201920202021
- BMW 740LI 2016-2017 20162017
- BMW M550I 2017-2021 20172018201920202021
- BMW 640I 2018-2020 201820192020
- BMW 840I 2020-2021 20202021
- BMW M8 2020-2021 20202021
- BMW 540D 2018-2020 201820192020
- BMW 740E 2017-2019 201720182019
- BMW M850I 2019-2021 201920202021
- BMW X6 M 2020 2020
- BMW M760I 2017-2021 20172018201920202021
- BMW C 400 X 2018 2018
- BMW F800 R 2017 2017
- BMW B7 Alpina 2018-2021 2018201920202021
- BMW 745E 2020 2020
- BMW M8 Gran Coupe 2020 2020
- BMW F 850 GS Adventure 2021 2021
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