Only warm air comes out of the vents despite the air conditioning being switched on. The status indicator...
BMW technical service bulletin B640721 for 2018-2021 BMW X3, 2017-2021 BMW 530I and 2016-2019, 2021 BMW 750LI and others.
- Bulletin number
- B640721
- Component
- Electrical system
- Summary
- Only warm air comes out of the vents despite the air conditioning being switched on. The status indicator LED on the air conditioning control panel (IHKA) lights up green.
Owners of these vehicles have filed 197 complaints in the electrical category.
Vehicles covered
- BMW X3 2018-2021 2018201920202021
- BMW 530I 2017-2021 20172018201920202021
- BMW 750LI 2016-2019, 2021 20162017201820192021
- BMW 540I 2017-2021 20172018201920202021
- BMW 750I 2018-2019 20182019
- BMW 740I 2017-2021 20172018201920202021
- BMW 530E 2018-2021 2018201920202021
- BMW 740LI 2016-2017 20162017
- BMW M550I 2017-2021 20172018201920202021
- BMW 540D 2018-2020 201820192020
- BMW 740E 2017-2019 201720182019
- 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 F 850 GS Adventure 2021 2021
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