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BMW 3-Series and 4-Series Forum (F30 / F32) | F30POST > 2012-2019 BMW 3 and 4-Series Forums > Regional Forums > UK > Error code 801A4C - Alarm siren
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      01-19-2022, 09:37 AM   #1
2JPW
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Error code 801A4C - Alarm siren

I have the above error code which I believe is related to the alarm siren on my 4 Series.
Apparently these have batteries which need to be replaced.
Does anyone know the location of the siren on an F32?
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      10-22-2022, 03:01 PM   #2
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I have this same error code on my f30 right now. Any update?
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      10-22-2022, 03:02 PM   #3
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Yes, it was the alarm siren battery and I had it replaced under extended warranty.
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