neletaylor1
Mini One defective alarm system
Summary of the thread
A 2014 Mini One was experiencing a defective alarm system, with an error stored in the memory and the alarm not functioning. The suspected cause was a discharged auxiliary battery due to ageing. After confirming low voltage through a battery check, replacing the auxiliary battery resolved the issue, restoring the alarm system's functionality and clearing the error.
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4 comment(s)
neletaylor1 (community.author)
Interesting. When you say 'discharged', was it a gradual decline, or did it fail suddenly? Was the error message the same? I'm trying to gauge whether it's worth the expense of a new auxiliary battery or if there could be another underlying issue draining the battery.
sinaweber1
It was a gradual decline, as far as I could tell. The error message was related to low voltage in the alarm system circuit. I would advise that you have the battery properly checked at a workshop to confirm if it is the issue. If it is indeed the battery, replacement should resolve the problem.
neletaylor1 (community.author)
I performed a battery check and it confirmed the low voltage. I have replaced the auxiliary battery, and the alarm system is now functioning correctly. The error in the memory is gone. Total cost 330€. Thank you for your input.
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MINI
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ONE
sinaweber1
I had a similar issue with my Mini One. The alarm system malfunctioned, and the error memory stored a related code. Have you performed a battery check on the auxiliary battery? It's often the culprit when the alarm system behaves erratically. In my case, the battery was simply discharged. Do you have access to a diagnostic tool to read the battery voltage?