Sunroof reverses when closing
BMW technical service bulletin B540121 for 2016-2019, 2021 BMW 750LI, 2018-2019 BMW 750I and 2017-2021 BMW 740I and others.
- Bulletin number
- B540121
- Component
- Visibility: sun/moon roof assembly
- Summary
- SUNROOF REVERSES WHEN CLOSING: After the vehicle is left in the hot sun and/or high temperatures with the sunroof in the vented position, the sunroof may reverse (anti-trap activates) when closing.
Owners of these vehicles have filed 2 complaints in the visibility category.
Vehicles covered
- BMW 750LI 2016-2019, 2021 20162017201820192021
- BMW 750I 2018-2019 20182019
- BMW 740I 2017-2021 20172018201920202021
- BMW 740LI 2016-2017 20162017
- BMW 740E 2017-2019 201720182019
- BMW M760I 2017-2021 20172018201920202021
- BMW B7 Alpina 2018-2021 2018201920202021
- BMW 745E 2020 2020
- BMW F 850 GS Adventure 2021 2021
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