Thread: 2018 X1 - intermittent SOS failure and BC Button
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      11-17-2023, 05:37 PM   #4
mrpingu
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Drives: 2018 F48 X1 xDrive 18D
Join Date: Nov 2022
Location: Norway

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2018 BMW X1 (F48)  [10.00]
Yes most likely fault code:
B7F343: Backup battery: Before end of life

Not 100% for sure, but pretty good chance. As this is a know failure on BMWs
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