Mini Roadster Anti Theft Alarm Issue

A false alarm could be triggered by a number of things. Have you recently experienced a power failure or any issues with the car's battery? Also, has the alarm sensor ever been replaced?

I have not experienced any power failures recently. As far as I know, the alarm sensor has never been replaced. What would be the next step in troubleshooting this issue?

Given the information, it does seem the alarm system coding is the likely culprit. I would recommend taking it to a workshop to have the coding checked and corrected. They should be able to resolve it quickly. It is something I have seen before.

The workshop confirmed the error was due to the alarm system being incorrectly coded to activate the optical locking. They recoded it, and the system is functioning normally again. The total cost was 45€. Thank you for your assistance.